(function (global, factory) {
  typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
  typeof define === 'function' && define.amd ? define(['exports'], factory) :
  (global = typeof globalThis !== 'undefined' ? globalThis : global || self, factory(global.IMask = {}));
})(this, (function (exports) { 'use strict';

  /** Checks if value is string */
  function isString(str) {
    return typeof str === 'string' || str instanceof String;
  }

  /** Checks if value is object */
  function isObject(obj) {
    var _obj$constructor;
    return typeof obj === 'object' && obj != null && (obj == null || (_obj$constructor = obj.constructor) == null ? void 0 : _obj$constructor.name) === 'Object';
  }
  function pick(obj, keys) {
    if (Array.isArray(keys)) return pick(obj, (_, k) => keys.includes(k));
    return Object.entries(obj).reduce((acc, _ref) => {
      let [k, v] = _ref;
      if (keys(v, k)) acc[k] = v;
      return acc;
    }, {});
  }

  /** Direction */
  const DIRECTION = {
    NONE: 'NONE',
    LEFT: 'LEFT',
    FORCE_LEFT: 'FORCE_LEFT',
    RIGHT: 'RIGHT',
    FORCE_RIGHT: 'FORCE_RIGHT'
  };

  /** Direction */

  function forceDirection(direction) {
    switch (direction) {
      case DIRECTION.LEFT:
        return DIRECTION.FORCE_LEFT;
      case DIRECTION.RIGHT:
        return DIRECTION.FORCE_RIGHT;
      default:
        return direction;
    }
  }

  /** Escapes regular expression control chars */
  function escapeRegExp(str) {
    return str.replace(/([.*+?^=!:${}()|[\]/\\])/g, '\\$1');
  }

  // cloned from https://github.com/epoberezkin/fast-deep-equal with small changes
  function objectIncludes(b, a) {
    if (a === b) return true;
    const arrA = Array.isArray(a),
      arrB = Array.isArray(b);
    let i;
    if (arrA && arrB) {
      if (a.length != b.length) return false;
      for (i = 0; i < a.length; i++) if (!objectIncludes(a[i], b[i])) return false;
      return true;
    }
    if (arrA != arrB) return false;
    if (a && b && typeof a === 'object' && typeof b === 'object') {
      const dateA = a instanceof Date,
        dateB = b instanceof Date;
      if (dateA && dateB) return a.getTime() == b.getTime();
      if (dateA != dateB) return false;
      const regexpA = a instanceof RegExp,
        regexpB = b instanceof RegExp;
      if (regexpA && regexpB) return a.toString() == b.toString();
      if (regexpA != regexpB) return false;
      const keys = Object.keys(a);
      // if (keys.length !== Object.keys(b).length) return false;

      for (i = 0; i < keys.length; i++) if (!Object.prototype.hasOwnProperty.call(b, keys[i])) return false;
      for (i = 0; i < keys.length; i++) if (!objectIncludes(b[keys[i]], a[keys[i]])) return false;
      return true;
    } else if (a && b && typeof a === 'function' && typeof b === 'function') {
      return a.toString() === b.toString();
    }
    return false;
  }

  /** Selection range */

  /** Provides details of changing input */
  class ActionDetails {
    /** Current input value */

    /** Current cursor position */

    /** Old input value */

    /** Old selection */

    constructor(opts) {
      Object.assign(this, opts);

      // double check if left part was changed (autofilling, other non-standard input triggers)
      while (this.value.slice(0, this.startChangePos) !== this.oldValue.slice(0, this.startChangePos)) {
        --this.oldSelection.start;
      }
    }

    /** Start changing position */
    get startChangePos() {
      return Math.min(this.cursorPos, this.oldSelection.start);
    }

    /** Inserted symbols count */
    get insertedCount() {
      return this.cursorPos - this.startChangePos;
    }

    /** Inserted symbols */
    get inserted() {
      return this.value.substr(this.startChangePos, this.insertedCount);
    }

    /** Removed symbols count */
    get removedCount() {
      // Math.max for opposite operation
      return Math.max(this.oldSelection.end - this.startChangePos ||
      // for Delete
      this.oldValue.length - this.value.length, 0);
    }

    /** Removed symbols */
    get removed() {
      return this.oldValue.substr(this.startChangePos, this.removedCount);
    }

    /** Unchanged head symbols */
    get head() {
      return this.value.substring(0, this.startChangePos);
    }

    /** Unchanged tail symbols */
    get tail() {
      return this.value.substring(this.startChangePos + this.insertedCount);
    }

    /** Remove direction */
    get removeDirection() {
      if (!this.removedCount || this.insertedCount) return DIRECTION.NONE;

      // align right if delete at right
      return (this.oldSelection.end === this.cursorPos || this.oldSelection.start === this.cursorPos) &&
      // if not range removed (event with backspace)
      this.oldSelection.end === this.oldSelection.start ? DIRECTION.RIGHT : DIRECTION.LEFT;
    }
  }

  /** Applies mask on element */
  function IMask(el, opts) {
    // currently available only for input-like elements
    return new IMask.InputMask(el, opts);
  }

  // TODO can't use overloads here because of https://github.com/microsoft/TypeScript/issues/50754
  // export function maskedClass(mask: string): typeof MaskedPattern;
  // export function maskedClass(mask: DateConstructor): typeof MaskedDate;
  // export function maskedClass(mask: NumberConstructor): typeof MaskedNumber;
  // export function maskedClass(mask: Array<any> | ArrayConstructor): typeof MaskedDynamic;
  // export function maskedClass(mask: MaskedDate): typeof MaskedDate;
  // export function maskedClass(mask: MaskedNumber): typeof MaskedNumber;
  // export function maskedClass(mask: MaskedEnum): typeof MaskedEnum;
  // export function maskedClass(mask: MaskedRange): typeof MaskedRange;
  // export function maskedClass(mask: MaskedRegExp): typeof MaskedRegExp;
  // export function maskedClass(mask: MaskedFunction): typeof MaskedFunction;
  // export function maskedClass(mask: MaskedPattern): typeof MaskedPattern;
  // export function maskedClass(mask: MaskedDynamic): typeof MaskedDynamic;
  // export function maskedClass(mask: Masked): typeof Masked;
  // export function maskedClass(mask: typeof Masked): typeof Masked;
  // export function maskedClass(mask: typeof MaskedDate): typeof MaskedDate;
  // export function maskedClass(mask: typeof MaskedNumber): typeof MaskedNumber;
  // export function maskedClass(mask: typeof MaskedEnum): typeof MaskedEnum;
  // export function maskedClass(mask: typeof MaskedRange): typeof MaskedRange;
  // export function maskedClass(mask: typeof MaskedRegExp): typeof MaskedRegExp;
  // export function maskedClass(mask: typeof MaskedFunction): typeof MaskedFunction;
  // export function maskedClass(mask: typeof MaskedPattern): typeof MaskedPattern;
  // export function maskedClass(mask: typeof MaskedDynamic): typeof MaskedDynamic;
  // export function maskedClass<Mask extends typeof Masked> (mask: Mask): Mask;
  // export function maskedClass(mask: RegExp): typeof MaskedRegExp;
  // export function maskedClass(mask: (value: string, ...args: any[]) => boolean): typeof MaskedFunction;
  /** Get Masked class by mask type */
  function maskedClass(mask) /* TODO */{
    if (mask == null) throw new Error('mask property should be defined');
    if (mask instanceof RegExp) return IMask.MaskedRegExp;
    if (isString(mask)) return IMask.MaskedPattern;
    if (mask === Date) return IMask.MaskedDate;
    if (mask === Number) return IMask.MaskedNumber;
    if (Array.isArray(mask) || mask === Array) return IMask.MaskedDynamic;
    if (IMask.Masked && mask.prototype instanceof IMask.Masked) return mask;
    if (IMask.Masked && mask instanceof IMask.Masked) return mask.constructor;
    if (mask instanceof Function) return IMask.MaskedFunction;
    console.warn('Mask not found for mask', mask); // eslint-disable-line no-console
    return IMask.Masked;
  }
  function normalizeOpts(opts) {
    if (!opts) throw new Error('Options in not defined');
    if (IMask.Masked) {
      if (opts.prototype instanceof IMask.Masked) return {
        mask: opts
      };

      /*
        handle cases like:
        1) opts = Masked
        2) opts = { mask: Masked, ...instanceOpts }
      */
      const {
        mask = undefined,
        ...instanceOpts
      } = opts instanceof IMask.Masked ? {
        mask: opts
      } : isObject(opts) && opts.mask instanceof IMask.Masked ? opts : {};
      if (mask) {
        const _mask = mask.mask;
        return {
          ...pick(mask, (_, k) => !k.startsWith('_')),
          mask: mask.constructor,
          _mask,
          ...instanceOpts
        };
      }
    }
    if (!isObject(opts)) return {
      mask: opts
    };
    return {
      ...opts
    };
  }

  // TODO can't use overloads here because of https://github.com/microsoft/TypeScript/issues/50754

  // From masked
  // export default function createMask<Opts extends Masked, ReturnMasked=Opts> (opts: Opts): ReturnMasked;
  // // From masked class
  // export default function createMask<Opts extends MaskedOptions<typeof Masked>, ReturnMasked extends Masked=InstanceType<Opts['mask']>> (opts: Opts): ReturnMasked;
  // export default function createMask<Opts extends MaskedOptions<typeof MaskedDate>, ReturnMasked extends MaskedDate=MaskedDate<Opts['parent']>> (opts: Opts): ReturnMasked;
  // export default function createMask<Opts extends MaskedOptions<typeof MaskedNumber>, ReturnMasked extends MaskedNumber=MaskedNumber<Opts['parent']>> (opts: Opts): ReturnMasked;
  // export default function createMask<Opts extends MaskedOptions<typeof MaskedEnum>, ReturnMasked extends MaskedEnum=MaskedEnum<Opts['parent']>> (opts: Opts): ReturnMasked;
  // export default function createMask<Opts extends MaskedOptions<typeof MaskedRange>, ReturnMasked extends MaskedRange=MaskedRange<Opts['parent']>> (opts: Opts): ReturnMasked;
  // export default function createMask<Opts extends MaskedOptions<typeof MaskedRegExp>, ReturnMasked extends MaskedRegExp=MaskedRegExp<Opts['parent']>> (opts: Opts): ReturnMasked;
  // export default function createMask<Opts extends MaskedOptions<typeof MaskedFunction>, ReturnMasked extends MaskedFunction=MaskedFunction<Opts['parent']>> (opts: Opts): ReturnMasked;
  // export default function createMask<Opts extends MaskedOptions<typeof MaskedPattern>, ReturnMasked extends MaskedPattern=MaskedPattern<Opts['parent']>> (opts: Opts): ReturnMasked;
  // export default function createMask<Opts extends MaskedOptions<typeof MaskedDynamic>, ReturnMasked extends MaskedDynamic=MaskedDynamic<Opts['parent']>> (opts: Opts): ReturnMasked;
  // // From mask opts
  // export default function createMask<Opts extends MaskedOptions<Masked>, ReturnMasked=Opts extends MaskedOptions<infer M> ? M : never> (opts: Opts): ReturnMasked;
  // export default function createMask<Opts extends MaskedNumberOptions, ReturnMasked extends MaskedNumber=MaskedNumber<Opts['parent']>> (opts: Opts): ReturnMasked;
  // export default function createMask<Opts extends MaskedDateFactoryOptions, ReturnMasked extends MaskedDate=MaskedDate<Opts['parent']>> (opts: Opts): ReturnMasked;
  // export default function createMask<Opts extends MaskedEnumOptions, ReturnMasked extends MaskedEnum=MaskedEnum<Opts['parent']>> (opts: Opts): ReturnMasked;
  // export default function createMask<Opts extends MaskedRangeOptions, ReturnMasked extends MaskedRange=MaskedRange<Opts['parent']>> (opts: Opts): ReturnMasked;
  // export default function createMask<Opts extends MaskedPatternOptions, ReturnMasked extends MaskedPattern=MaskedPattern<Opts['parent']>> (opts: Opts): ReturnMasked;
  // export default function createMask<Opts extends MaskedDynamicOptions, ReturnMasked extends MaskedDynamic=MaskedDynamic<Opts['parent']>> (opts: Opts): ReturnMasked;
  // export default function createMask<Opts extends MaskedOptions<RegExp>, ReturnMasked extends MaskedRegExp=MaskedRegExp<Opts['parent']>> (opts: Opts): ReturnMasked;
  // export default function createMask<Opts extends MaskedOptions<Function>, ReturnMasked extends MaskedFunction=MaskedFunction<Opts['parent']>> (opts: Opts): ReturnMasked;

  /** Creates new {@link Masked} depending on mask type */
  function createMask(opts) {
    if (IMask.Masked && opts instanceof IMask.Masked) return opts;
    const nOpts = normalizeOpts(opts);
    const MaskedClass = maskedClass(nOpts.mask);
    if (!MaskedClass) throw new Error('Masked class is not found for provided mask, appropriate module needs to be imported manually before creating mask.');
    if (nOpts.mask === MaskedClass) delete nOpts.mask;
    if (nOpts._mask) {
      nOpts.mask = nOpts._mask;
      delete nOpts._mask;
    }
    return new MaskedClass(nOpts);
  }
  IMask.createMask = createMask;

  /**  Generic element API to use with mask */
  class MaskElement {
    /** */

    /** */

    /** */

    /** Safely returns selection start */
    get selectionStart() {
      let start;
      try {
        start = this._unsafeSelectionStart;
      } catch {}
      return start != null ? start : this.value.length;
    }

    /** Safely returns selection end */
    get selectionEnd() {
      let end;
      try {
        end = this._unsafeSelectionEnd;
      } catch {}
      return end != null ? end : this.value.length;
    }

    /** Safely sets element selection */
    select(start, end) {
      if (start == null || end == null || start === this.selectionStart && end === this.selectionEnd) return;
      try {
        this._unsafeSelect(start, end);
      } catch {}
    }

    /** */
    get isActive() {
      return false;
    }
    /** */

    /** */

    /** */
  }

  IMask.MaskElement = MaskElement;

  /** Bridge between HTMLElement and {@link Masked} */
  class HTMLMaskElement extends MaskElement {
    /** HTMLElement to use mask on */

    constructor(input) {
      super();
      this.input = input;
      this._handlers = {};
    }
    get rootElement() {
      var _this$input$getRootNo, _this$input$getRootNo2, _this$input;
      return (_this$input$getRootNo = (_this$input$getRootNo2 = (_this$input = this.input).getRootNode) == null ? void 0 : _this$input$getRootNo2.call(_this$input)) != null ? _this$input$getRootNo : document;
    }

    /**
      Is element in focus
    */
    get isActive() {
      return this.input === this.rootElement.activeElement;
    }

    /**
      Binds HTMLElement events to mask internal events
    */
    bindEvents(handlers) {
      Object.keys(handlers).forEach(event => this._toggleEventHandler(HTMLMaskElement.EVENTS_MAP[event], handlers[event]));
    }

    /**
      Unbinds HTMLElement events to mask internal events
    */
    unbindEvents() {
      Object.keys(this._handlers).forEach(event => this._toggleEventHandler(event));
    }
    _toggleEventHandler(event, handler) {
      if (this._handlers[event]) {
        this.input.removeEventListener(event, this._handlers[event]);
        delete this._handlers[event];
      }
      if (handler) {
        this.input.addEventListener(event, handler);
        this._handlers[event] = handler;
      }
    }
  }
  /** Mapping between HTMLElement events and mask internal events */
  HTMLMaskElement.EVENTS_MAP = {
    selectionChange: 'keydown',
    input: 'input',
    drop: 'drop',
    click: 'click',
    focus: 'focus',
    commit: 'blur'
  };
  IMask.HTMLMaskElement = HTMLMaskElement;

  /** Bridge between InputElement and {@link Masked} */
  class HTMLInputMaskElement extends HTMLMaskElement {
    /** InputElement to use mask on */

    constructor(input) {
      super(input);
      this.input = input;
      this._handlers = {};
    }

    /** Returns InputElement selection start */
    get _unsafeSelectionStart() {
      return this.input.selectionStart != null ? this.input.selectionStart : this.value.length;
    }

    /** Returns InputElement selection end */
    get _unsafeSelectionEnd() {
      return this.input.selectionEnd;
    }

    /** Sets InputElement selection */
    _unsafeSelect(start, end) {
      this.input.setSelectionRange(start, end);
    }
    get value() {
      return this.input.value;
    }
    set value(value) {
      this.input.value = value;
    }
  }
  IMask.HTMLMaskElement = HTMLMaskElement;

  class HTMLContenteditableMaskElement extends HTMLMaskElement {
    /** Returns HTMLElement selection start */
    get _unsafeSelectionStart() {
      const root = this.rootElement;
      const selection = root.getSelection && root.getSelection();
      const anchorOffset = selection && selection.anchorOffset;
      const focusOffset = selection && selection.focusOffset;
      if (focusOffset == null || anchorOffset == null || anchorOffset < focusOffset) {
        return anchorOffset;
      }
      return focusOffset;
    }

    /** Returns HTMLElement selection end */
    get _unsafeSelectionEnd() {
      const root = this.rootElement;
      const selection = root.getSelection && root.getSelection();
      const anchorOffset = selection && selection.anchorOffset;
      const focusOffset = selection && selection.focusOffset;
      if (focusOffset == null || anchorOffset == null || anchorOffset > focusOffset) {
        return anchorOffset;
      }
      return focusOffset;
    }

    /** Sets HTMLElement selection */
    _unsafeSelect(start, end) {
      if (!this.rootElement.createRange) return;
      const range = this.rootElement.createRange();
      range.setStart(this.input.firstChild || this.input, start);
      range.setEnd(this.input.lastChild || this.input, end);
      const root = this.rootElement;
      const selection = root.getSelection && root.getSelection();
      if (selection) {
        selection.removeAllRanges();
        selection.addRange(range);
      }
    }

    /** HTMLElement value */
    get value() {
      return this.input.textContent || '';
    }
    set value(value) {
      this.input.textContent = value;
    }
  }
  IMask.HTMLContenteditableMaskElement = HTMLContenteditableMaskElement;

  /** Listens to element events and controls changes between element and {@link Masked} */
  class InputMask {
    /**
      View element
    */

    /** Internal {@link Masked} model */

    constructor(el, opts) {
      this.el = el instanceof MaskElement ? el : el.isContentEditable && el.tagName !== 'INPUT' && el.tagName !== 'TEXTAREA' ? new HTMLContenteditableMaskElement(el) : new HTMLInputMaskElement(el);
      this.masked = createMask(opts);
      this._listeners = {};
      this._value = '';
      this._unmaskedValue = '';
      this._saveSelection = this._saveSelection.bind(this);
      this._onInput = this._onInput.bind(this);
      this._onChange = this._onChange.bind(this);
      this._onDrop = this._onDrop.bind(this);
      this._onFocus = this._onFocus.bind(this);
      this._onClick = this._onClick.bind(this);
      this.alignCursor = this.alignCursor.bind(this);
      this.alignCursorFriendly = this.alignCursorFriendly.bind(this);
      this._bindEvents();

      // refresh
      this.updateValue();
      this._onChange();
    }
    maskEquals(mask) {
      var _this$masked;
      return mask == null || ((_this$masked = this.masked) == null ? void 0 : _this$masked.maskEquals(mask));
    }

    /** Masked */
    get mask() {
      return this.masked.mask;
    }
    set mask(mask) {
      if (this.maskEquals(mask)) return;
      if (!(mask instanceof IMask.Masked) && this.masked.constructor === maskedClass(mask)) {
        // TODO "any" no idea
        this.masked.updateOptions({
          mask
        });
        return;
      }
      const masked = mask instanceof IMask.Masked ? mask : createMask({
        mask
      });
      masked.unmaskedValue = this.masked.unmaskedValue;
      this.masked = masked;
    }

    /** Raw value */
    get value() {
      return this._value;
    }
    set value(str) {
      if (this.value === str) return;
      this.masked.value = str;
      this.updateControl();
      this.alignCursor();
    }

    /** Unmasked value */
    get unmaskedValue() {
      return this._unmaskedValue;
    }
    set unmaskedValue(str) {
      if (this.unmaskedValue === str) return;
      this.masked.unmaskedValue = str;
      this.updateControl();
      this.alignCursor();
    }

    /** Typed unmasked value */
    get typedValue() {
      return this.masked.typedValue;
    }
    set typedValue(val) {
      if (this.masked.typedValueEquals(val)) return;
      this.masked.typedValue = val;
      this.updateControl();
      this.alignCursor();
    }

    /** Display value */
    get displayValue() {
      return this.masked.displayValue;
    }

    /** Starts listening to element events */
    _bindEvents() {
      this.el.bindEvents({
        selectionChange: this._saveSelection,
        input: this._onInput,
        drop: this._onDrop,
        click: this._onClick,
        focus: this._onFocus,
        commit: this._onChange
      });
    }

    /** Stops listening to element events */
    _unbindEvents() {
      if (this.el) this.el.unbindEvents();
    }

    /** Fires custom event */
    _fireEvent(ev, e) {
      const listeners = this._listeners[ev];
      if (!listeners) return;
      listeners.forEach(l => l(e));
    }

    /** Current selection start */
    get selectionStart() {
      return this._cursorChanging ? this._changingCursorPos : this.el.selectionStart;
    }

    /** Current cursor position */
    get cursorPos() {
      return this._cursorChanging ? this._changingCursorPos : this.el.selectionEnd;
    }
    set cursorPos(pos) {
      if (!this.el || !this.el.isActive) return;
      this.el.select(pos, pos);
      this._saveSelection();
    }

    /** Stores current selection */
    _saveSelection( /* ev */
    ) {
      if (this.displayValue !== this.el.value) {
        console.warn('Element value was changed outside of mask. Syncronize mask using `mask.updateValue()` to work properly.'); // eslint-disable-line no-console
      }

      this._selection = {
        start: this.selectionStart,
        end: this.cursorPos
      };
    }

    /** Syncronizes model value from view */
    updateValue() {
      this.masked.value = this.el.value;
      this._value = this.masked.value;
    }

    /** Syncronizes view from model value, fires change events */
    updateControl() {
      const newUnmaskedValue = this.masked.unmaskedValue;
      const newValue = this.masked.value;
      const newDisplayValue = this.displayValue;
      const isChanged = this.unmaskedValue !== newUnmaskedValue || this.value !== newValue;
      this._unmaskedValue = newUnmaskedValue;
      this._value = newValue;
      if (this.el.value !== newDisplayValue) this.el.value = newDisplayValue;
      if (isChanged) this._fireChangeEvents();
    }

    /** Updates options with deep equal check, recreates {@link Masked} model if mask type changes */
    updateOptions(opts) {
      const {
        mask,
        ...restOpts
      } = opts;
      const updateMask = !this.maskEquals(mask);
      const updateOpts = !objectIncludes(this.masked, restOpts);
      if (updateMask) this.mask = mask;
      if (updateOpts) this.masked.updateOptions(restOpts); // TODO

      if (updateMask || updateOpts) this.updateControl();
    }

    /** Updates cursor */
    updateCursor(cursorPos) {
      if (cursorPos == null) return;
      this.cursorPos = cursorPos;

      // also queue change cursor for mobile browsers
      this._delayUpdateCursor(cursorPos);
    }

    /** Delays cursor update to support mobile browsers */
    _delayUpdateCursor(cursorPos) {
      this._abortUpdateCursor();
      this._changingCursorPos = cursorPos;
      this._cursorChanging = setTimeout(() => {
        if (!this.el) return; // if was destroyed
        this.cursorPos = this._changingCursorPos;
        this._abortUpdateCursor();
      }, 10);
    }

    /** Fires custom events */
    _fireChangeEvents() {
      this._fireEvent('accept', this._inputEvent);
      if (this.masked.isComplete) this._fireEvent('complete', this._inputEvent);
    }

    /** Aborts delayed cursor update */
    _abortUpdateCursor() {
      if (this._cursorChanging) {
        clearTimeout(this._cursorChanging);
        delete this._cursorChanging;
      }
    }

    /** Aligns cursor to nearest available position */
    alignCursor() {
      this.cursorPos = this.masked.nearestInputPos(this.masked.nearestInputPos(this.cursorPos, DIRECTION.LEFT));
    }

    /** Aligns cursor only if selection is empty */
    alignCursorFriendly() {
      if (this.selectionStart !== this.cursorPos) return; // skip if range is selected
      this.alignCursor();
    }

    /** Adds listener on custom event */
    on(ev, handler) {
      if (!this._listeners[ev]) this._listeners[ev] = [];
      this._listeners[ev].push(handler);
      return this;
    }

    /** Removes custom event listener */
    off(ev, handler) {
      if (!this._listeners[ev]) return this;
      if (!handler) {
        delete this._listeners[ev];
        return this;
      }
      const hIndex = this._listeners[ev].indexOf(handler);
      if (hIndex >= 0) this._listeners[ev].splice(hIndex, 1);
      return this;
    }

    /** Handles view input event */
    _onInput(e) {
      this._inputEvent = e;
      this._abortUpdateCursor();

      // fix strange IE behavior
      if (!this._selection) return this.updateValue();
      const details = new ActionDetails({
        // new state
        value: this.el.value,
        cursorPos: this.cursorPos,
        // old state
        oldValue: this.displayValue,
        oldSelection: this._selection
      });
      const oldRawValue = this.masked.rawInputValue;
      const offset = this.masked.splice(details.startChangePos, details.removed.length, details.inserted, details.removeDirection, {
        input: true,
        raw: true
      }).offset;

      // force align in remove direction only if no input chars were removed
      // otherwise we still need to align with NONE (to get out from fixed symbols for instance)
      const removeDirection = oldRawValue === this.masked.rawInputValue ? details.removeDirection : DIRECTION.NONE;
      let cursorPos = this.masked.nearestInputPos(details.startChangePos + offset, removeDirection);
      if (removeDirection !== DIRECTION.NONE) cursorPos = this.masked.nearestInputPos(cursorPos, DIRECTION.NONE);
      this.updateControl();
      this.updateCursor(cursorPos);
      delete this._inputEvent;
    }

    /** Handles view change event and commits model value */
    _onChange() {
      if (this.displayValue !== this.el.value) {
        this.updateValue();
      }
      this.masked.doCommit();
      this.updateControl();
      this._saveSelection();
    }

    /** Handles view drop event, prevents by default */
    _onDrop(ev) {
      ev.preventDefault();
      ev.stopPropagation();
    }

    /** Restore last selection on focus */
    _onFocus(ev) {
      this.alignCursorFriendly();
    }

    /** Restore last selection on focus */
    _onClick(ev) {
      this.alignCursorFriendly();
    }

    /** Unbind view events and removes element reference */
    destroy() {
      this._unbindEvents();
      this._listeners.length = 0;
      delete this.el;
    }
  }
  IMask.InputMask = InputMask;

  /** Provides details of changing model value */
  class ChangeDetails {
    /** Inserted symbols */

    /** Can skip chars */

    /** Additional offset if any changes occurred before tail */

    /** Raw inserted is used by dynamic mask */

    static normalize(prep) {
      return Array.isArray(prep) ? prep : [prep, new ChangeDetails()];
    }
    constructor(details) {
      Object.assign(this, {
        inserted: '',
        rawInserted: '',
        skip: false,
        tailShift: 0
      }, details);
    }

    /** Aggregate changes */
    aggregate(details) {
      this.rawInserted += details.rawInserted;
      this.skip = this.skip || details.skip;
      this.inserted += details.inserted;
      this.tailShift += details.tailShift;
      return this;
    }

    /** Total offset considering all changes */
    get offset() {
      return this.tailShift + this.inserted.length;
    }
  }
  IMask.ChangeDetails = ChangeDetails;

  /** Provides details of continuous extracted tail */
  class ContinuousTailDetails {
    /** Tail value as string */

    /** Tail start position */

    /** Start position */

    constructor(value, from, stop) {
      if (value === void 0) {
        value = '';
      }
      if (from === void 0) {
        from = 0;
      }
      this.value = value;
      this.from = from;
      this.stop = stop;
    }
    toString() {
      return this.value;
    }
    extend(tail) {
      this.value += String(tail);
    }
    appendTo(masked) {
      return masked.append(this.toString(), {
        tail: true
      }).aggregate(masked._appendPlaceholder());
    }
    get state() {
      return {
        value: this.value,
        from: this.from,
        stop: this.stop
      };
    }
    set state(state) {
      Object.assign(this, state);
    }
    unshift(beforePos) {
      if (!this.value.length || beforePos != null && this.from >= beforePos) return '';
      const shiftChar = this.value[0];
      this.value = this.value.slice(1);
      return shiftChar;
    }
    shift() {
      if (!this.value.length) return '';
      const shiftChar = this.value[this.value.length - 1];
      this.value = this.value.slice(0, -1);
      return shiftChar;
    }
  }

  /** Append flags */

  /** Extract flags */

  // see https://github.com/microsoft/TypeScript/issues/6223

  /** Provides common masking stuff */
  class Masked {
    /** */

    /** */

    /** Transforms value before mask processing */

    /** Transforms each char before mask processing */

    /** Validates if value is acceptable */

    /** Does additional processing at the end of editing */

    /** Format typed value to string */

    /** Parse string to get typed value */

    /** Enable characters overwriting */

    /** */

    /** */

    /** */

    constructor(opts) {
      this._value = '';
      this._update({
        ...Masked.DEFAULTS,
        ...opts
      });
      this._initialized = true;
    }

    /** Sets and applies new options */
    updateOptions(opts) {
      if (!Object.keys(opts).length) return;
      this.withValueRefresh(this._update.bind(this, opts));
    }

    /** Sets new options */
    _update(opts) {
      Object.assign(this, opts);
    }

    /** Mask state */
    get state() {
      return {
        _value: this.value,
        _rawInputValue: this.rawInputValue
      };
    }
    set state(state) {
      this._value = state._value;
    }

    /** Resets value */
    reset() {
      this._value = '';
    }
    get value() {
      return this._value;
    }
    set value(value) {
      this.resolve(value, {
        input: true
      });
    }

    /** Resolve new value */
    resolve(value, flags) {
      if (flags === void 0) {
        flags = {
          input: true
        };
      }
      this.reset();
      this.append(value, flags, '');
      this.doCommit();
    }
    get unmaskedValue() {
      return this.value;
    }
    set unmaskedValue(value) {
      this.resolve(value, {});
    }
    get typedValue() {
      return this.parse ? this.parse(this.value, this) : this.unmaskedValue;
    }
    set typedValue(value) {
      if (this.format) {
        this.value = this.format(value, this);
      } else {
        this.unmaskedValue = String(value);
      }
    }

    /** Value that includes raw user input */
    get rawInputValue() {
      return this.extractInput(0, this.displayValue.length, {
        raw: true
      });
    }
    set rawInputValue(value) {
      this.resolve(value, {
        raw: true
      });
    }
    get displayValue() {
      return this.value;
    }
    get isComplete() {
      return true;
    }
    get isFilled() {
      return this.isComplete;
    }

    /** Finds nearest input position in direction */
    nearestInputPos(cursorPos, direction) {
      return cursorPos;
    }
    totalInputPositions(fromPos, toPos) {
      if (fromPos === void 0) {
        fromPos = 0;
      }
      if (toPos === void 0) {
        toPos = this.displayValue.length;
      }
      return Math.min(this.displayValue.length, toPos - fromPos);
    }

    /** Extracts value in range considering flags */
    extractInput(fromPos, toPos, flags) {
      if (fromPos === void 0) {
        fromPos = 0;
      }
      if (toPos === void 0) {
        toPos = this.displayValue.length;
      }
      return this.displayValue.slice(fromPos, toPos);
    }

    /** Extracts tail in range */
    extractTail(fromPos, toPos) {
      if (fromPos === void 0) {
        fromPos = 0;
      }
      if (toPos === void 0) {
        toPos = this.displayValue.length;
      }
      return new ContinuousTailDetails(this.extractInput(fromPos, toPos), fromPos);
    }

    /** Appends tail */
    appendTail(tail) {
      if (isString(tail)) tail = new ContinuousTailDetails(String(tail));
      return tail.appendTo(this);
    }

    /** Appends char */
    _appendCharRaw(ch, flags) {
      if (!ch) return new ChangeDetails();
      this._value += ch;
      return new ChangeDetails({
        inserted: ch,
        rawInserted: ch
      });
    }

    /** Appends char */
    _appendChar(ch, flags, checkTail) {
      if (flags === void 0) {
        flags = {};
      }
      const consistentState = this.state;
      let details;
      [ch, details] = this.doPrepareChar(ch, flags);
      details = details.aggregate(this._appendCharRaw(ch, flags));
      if (details.inserted) {
        let consistentTail;
        let appended = this.doValidate(flags) !== false;
        if (appended && checkTail != null) {
          // validation ok, check tail
          const beforeTailState = this.state;
          if (this.overwrite === true) {
            consistentTail = checkTail.state;
            checkTail.unshift(this.displayValue.length - details.tailShift);
          }
          let tailDetails = this.appendTail(checkTail);
          appended = tailDetails.rawInserted === checkTail.toString();

          // not ok, try shift
          if (!(appended && tailDetails.inserted) && this.overwrite === 'shift') {
            this.state = beforeTailState;
            consistentTail = checkTail.state;
            checkTail.shift();
            tailDetails = this.appendTail(checkTail);
            appended = tailDetails.rawInserted === checkTail.toString();
          }

          // if ok, rollback state after tail
          if (appended && tailDetails.inserted) this.state = beforeTailState;
        }

        // revert all if something went wrong
        if (!appended) {
          details = new ChangeDetails();
          this.state = consistentState;
          if (checkTail && consistentTail) checkTail.state = consistentTail;
        }
      }
      return details;
    }

    /** Appends optional placeholder at the end */
    _appendPlaceholder() {
      return new ChangeDetails();
    }

    /** Appends optional eager placeholder at the end */
    _appendEager() {
      return new ChangeDetails();
    }

    /** Appends symbols considering flags */
    append(str, flags, tail) {
      if (!isString(str)) throw new Error('value should be string');
      const checkTail = isString(tail) ? new ContinuousTailDetails(String(tail)) : tail;
      if (flags != null && flags.tail) flags._beforeTailState = this.state;
      let details;
      [str, details] = this.doPrepare(str, flags);
      for (let ci = 0; ci < str.length; ++ci) {
        const d = this._appendChar(str[ci], flags, checkTail);
        if (!d.rawInserted && !this.doSkipInvalid(str[ci], flags, checkTail)) break;
        details.aggregate(d);
      }
      if ((this.eager === true || this.eager === 'append') && flags != null && flags.input && str) {
        details.aggregate(this._appendEager());
      }

      // append tail but aggregate only tailShift
      if (checkTail != null) {
        details.tailShift += this.appendTail(checkTail).tailShift;
        // TODO it's a good idea to clear state after appending ends
        // but it causes bugs when one append calls another (when dynamic dispatch set rawInputValue)
        // this._resetBeforeTailState();
      }

      return details;
    }
    remove(fromPos, toPos) {
      if (fromPos === void 0) {
        fromPos = 0;
      }
      if (toPos === void 0) {
        toPos = this.displayValue.length;
      }
      this._value = this.displayValue.slice(0, fromPos) + this.displayValue.slice(toPos);
      return new ChangeDetails();
    }

    /** Calls function and reapplies current value */
    withValueRefresh(fn) {
      if (this._refreshing || !this._initialized) return fn();
      this._refreshing = true;
      const rawInput = this.rawInputValue;
      const value = this.value;
      const ret = fn();
      this.rawInputValue = rawInput;
      // append lost trailing chars at the end
      if (this.value && this.value !== value && value.indexOf(this.value) === 0) {
        this.append(value.slice(this.displayValue.length), {}, '');
      }
      delete this._refreshing;
      return ret;
    }
    runIsolated(fn) {
      if (this._isolated || !this._initialized) return fn(this);
      this._isolated = true;
      const state = this.state;
      const ret = fn(this);
      this.state = state;
      delete this._isolated;
      return ret;
    }
    doSkipInvalid(ch, flags, checkTail) {
      return Boolean(this.skipInvalid);
    }

    /** Prepares string before mask processing */
    doPrepare(str, flags) {
      if (flags === void 0) {
        flags = {};
      }
      return ChangeDetails.normalize(this.prepare ? this.prepare(str, this, flags) : str);
    }

    /** Prepares each char before mask processing */
    doPrepareChar(str, flags) {
      if (flags === void 0) {
        flags = {};
      }
      return ChangeDetails.normalize(this.prepareChar ? this.prepareChar(str, this, flags) : str);
    }

    /** Validates if value is acceptable */
    doValidate(flags) {
      return (!this.validate || this.validate(this.value, this, flags)) && (!this.parent || this.parent.doValidate(flags));
    }

    /** Does additional processing at the end of editing */
    doCommit() {
      if (this.commit) this.commit(this.value, this);
    }
    splice(start, deleteCount, inserted, removeDirection, flags) {
      if (removeDirection === void 0) {
        removeDirection = DIRECTION.NONE;
      }
      if (flags === void 0) {
        flags = {
          input: true
        };
      }
      const tailPos = start + deleteCount;
      const tail = this.extractTail(tailPos);
      const eagerRemove = this.eager === true || this.eager === 'remove';
      let oldRawValue;
      if (eagerRemove) {
        removeDirection = forceDirection(removeDirection);
        oldRawValue = this.extractInput(0, tailPos, {
          raw: true
        });
      }
      let startChangePos = start;
      const details = new ChangeDetails();

      // if it is just deletion without insertion
      if (removeDirection !== DIRECTION.NONE) {
        startChangePos = this.nearestInputPos(start, deleteCount > 1 && start !== 0 && !eagerRemove ? DIRECTION.NONE : removeDirection);

        // adjust tailShift if start was aligned
        details.tailShift = startChangePos - start;
      }
      details.aggregate(this.remove(startChangePos));
      if (eagerRemove && removeDirection !== DIRECTION.NONE && oldRawValue === this.rawInputValue) {
        if (removeDirection === DIRECTION.FORCE_LEFT) {
          let valLength;
          while (oldRawValue === this.rawInputValue && (valLength = this.displayValue.length)) {
            details.aggregate(new ChangeDetails({
              tailShift: -1
            })).aggregate(this.remove(valLength - 1));
          }
        } else if (removeDirection === DIRECTION.FORCE_RIGHT) {
          tail.unshift();
        }
      }
      return details.aggregate(this.append(inserted, flags, tail));
    }
    maskEquals(mask) {
      return this.mask === mask;
    }
    typedValueEquals(value) {
      const tval = this.typedValue;
      return value === tval || Masked.EMPTY_VALUES.includes(value) && Masked.EMPTY_VALUES.includes(tval) || (this.format ? this.format(value, this) === this.format(this.typedValue, this) : false);
    }
  }
  Masked.DEFAULTS = {
    skipInvalid: true
  };
  Masked.EMPTY_VALUES = [undefined, null, ''];
  IMask.Masked = Masked;

  class ChunksTailDetails {
    /** */

    constructor(chunks, from) {
      if (chunks === void 0) {
        chunks = [];
      }
      if (from === void 0) {
        from = 0;
      }
      this.chunks = chunks;
      this.from = from;
    }
    toString() {
      return this.chunks.map(String).join('');
    }
    extend(tailChunk) {
      if (!String(tailChunk)) return;
      tailChunk = isString(tailChunk) ? new ContinuousTailDetails(String(tailChunk)) : tailChunk;
      const lastChunk = this.chunks[this.chunks.length - 1];
      const extendLast = lastChunk && (
      // if stops are same or tail has no stop
      lastChunk.stop === tailChunk.stop || tailChunk.stop == null) &&
      // if tail chunk goes just after last chunk
      tailChunk.from === lastChunk.from + lastChunk.toString().length;
      if (tailChunk instanceof ContinuousTailDetails) {
        // check the ability to extend previous chunk
        if (extendLast) {
          // extend previous chunk
          lastChunk.extend(tailChunk.toString());
        } else {
          // append new chunk
          this.chunks.push(tailChunk);
        }
      } else if (tailChunk instanceof ChunksTailDetails) {
        if (tailChunk.stop == null) {
          // unwrap floating chunks to parent, keeping `from` pos
          let firstTailChunk;
          while (tailChunk.chunks.length && tailChunk.chunks[0].stop == null) {
            firstTailChunk = tailChunk.chunks.shift(); // not possible to be `undefined` because length was checked above
            firstTailChunk.from += tailChunk.from;
            this.extend(firstTailChunk);
          }
        }

        // if tail chunk still has value
        if (tailChunk.toString()) {
          // if chunks contains stops, then popup stop to container
          tailChunk.stop = tailChunk.blockIndex;
          this.chunks.push(tailChunk);
        }
      }
    }
    appendTo(masked) {
      if (!(masked instanceof IMask.MaskedPattern)) {
        const tail = new ContinuousTailDetails(this.toString());
        return tail.appendTo(masked);
      }
      const details = new ChangeDetails();
      for (let ci = 0; ci < this.chunks.length && !details.skip; ++ci) {
        const chunk = this.chunks[ci];
        const lastBlockIter = masked._mapPosToBlock(masked.displayValue.length);
        const stop = chunk.stop;
        let chunkBlock;
        if (stop != null && (
        // if block not found or stop is behind lastBlock
        !lastBlockIter || lastBlockIter.index <= stop)) {
          if (chunk instanceof ChunksTailDetails ||
          // for continuous block also check if stop is exist
          masked._stops.indexOf(stop) >= 0) {
            const phDetails = masked._appendPlaceholder(stop);
            details.aggregate(phDetails);
          }
          chunkBlock = chunk instanceof ChunksTailDetails && masked._blocks[stop];
        }
        if (chunkBlock) {
          const tailDetails = chunkBlock.appendTail(chunk);
          tailDetails.skip = false; // always ignore skip, it will be set on last
          details.aggregate(tailDetails);
          masked._value += tailDetails.inserted;

          // get not inserted chars
          const remainChars = chunk.toString().slice(tailDetails.rawInserted.length);
          if (remainChars) details.aggregate(masked.append(remainChars, {
            tail: true
          }));
        } else {
          details.aggregate(masked.append(chunk.toString(), {
            tail: true
          }));
        }
      }
      return details;
    }
    get state() {
      return {
        chunks: this.chunks.map(c => c.state),
        from: this.from,
        stop: this.stop,
        blockIndex: this.blockIndex
      };
    }
    set state(state) {
      const {
        chunks,
        ...props
      } = state;
      Object.assign(this, props);
      this.chunks = chunks.map(cstate => {
        const chunk = "chunks" in cstate ? new ChunksTailDetails() : new ContinuousTailDetails();
        chunk.state = cstate;
        return chunk;
      });
    }
    unshift(beforePos) {
      if (!this.chunks.length || beforePos != null && this.from >= beforePos) return '';
      const chunkShiftPos = beforePos != null ? beforePos - this.from : beforePos;
      let ci = 0;
      while (ci < this.chunks.length) {
        const chunk = this.chunks[ci];
        const shiftChar = chunk.unshift(chunkShiftPos);
        if (chunk.toString()) {
          // chunk still contains value
          // but not shifted - means no more available chars to shift
          if (!shiftChar) break;
          ++ci;
        } else {
          // clean if chunk has no value
          this.chunks.splice(ci, 1);
        }
        if (shiftChar) return shiftChar;
      }
      return '';
    }
    shift() {
      if (!this.chunks.length) return '';
      let ci = this.chunks.length - 1;
      while (0 <= ci) {
        const chunk = this.chunks[ci];
        const shiftChar = chunk.shift();
        if (chunk.toString()) {
          // chunk still contains value
          // but not shifted - means no more available chars to shift
          if (!shiftChar) break;
          --ci;
        } else {
          // clean if chunk has no value
          this.chunks.splice(ci, 1);
        }
        if (shiftChar) return shiftChar;
      }
      return '';
    }
  }

  class PatternCursor {
    constructor(masked, pos) {
      this.masked = masked;
      this._log = [];
      const {
        offset,
        index
      } = masked._mapPosToBlock(pos) || (pos < 0 ?
      // first
      {
        index: 0,
        offset: 0
      } :
      // last
      {
        index: this.masked._blocks.length,
        offset: 0
      });
      this.offset = offset;
      this.index = index;
      this.ok = false;
    }
    get block() {
      return this.masked._blocks[this.index];
    }
    get pos() {
      return this.masked._blockStartPos(this.index) + this.offset;
    }
    get state() {
      return {
        index: this.index,
        offset: this.offset,
        ok: this.ok
      };
    }
    set state(s) {
      Object.assign(this, s);
    }
    pushState() {
      this._log.push(this.state);
    }
    popState() {
      const s = this._log.pop();
      if (s) this.state = s;
      return s;
    }
    bindBlock() {
      if (this.block) return;
      if (this.index < 0) {
        this.index = 0;
        this.offset = 0;
      }
      if (this.index >= this.masked._blocks.length) {
        this.index = this.masked._blocks.length - 1;
        this.offset = this.block.displayValue.length; // TODO this is stupid type error, `block` depends on index that was changed above
      }
    }

    _pushLeft(fn) {
      this.pushState();
      for (this.bindBlock(); 0 <= this.index; --this.index, this.offset = ((_this$block = this.block) == null ? void 0 : _this$block.displayValue.length) || 0) {
        var _this$block;
        if (fn()) return this.ok = true;
      }
      return this.ok = false;
    }
    _pushRight(fn) {
      this.pushState();
      for (this.bindBlock(); this.index < this.masked._blocks.length; ++this.index, this.offset = 0) {
        if (fn()) return this.ok = true;
      }
      return this.ok = false;
    }
    pushLeftBeforeFilled() {
      return this._pushLeft(() => {
        if (this.block.isFixed || !this.block.value) return;
        this.offset = this.block.nearestInputPos(this.offset, DIRECTION.FORCE_LEFT);
        if (this.offset !== 0) return true;
      });
    }
    pushLeftBeforeInput() {
      // cases:
      // filled input: 00|
      // optional empty input: 00[]|
      // nested block: XX<[]>|
      return this._pushLeft(() => {
        if (this.block.isFixed) return;
        this.offset = this.block.nearestInputPos(this.offset, DIRECTION.LEFT);
        return true;
      });
    }
    pushLeftBeforeRequired() {
      return this._pushLeft(() => {
        if (this.block.isFixed || this.block.isOptional && !this.block.value) return;
        this.offset = this.block.nearestInputPos(this.offset, DIRECTION.LEFT);
        return true;
      });
    }
    pushRightBeforeFilled() {
      return this._pushRight(() => {
        if (this.block.isFixed || !this.block.value) return;
        this.offset = this.block.nearestInputPos(this.offset, DIRECTION.FORCE_RIGHT);
        if (this.offset !== this.block.value.length) return true;
      });
    }
    pushRightBeforeInput() {
      return this._pushRight(() => {
        if (this.block.isFixed) return;

        // const o = this.offset;
        this.offset = this.block.nearestInputPos(this.offset, DIRECTION.NONE);
        // HACK cases like (STILL DOES NOT WORK FOR NESTED)
        // aa|X
        // aa<X|[]>X_    - this will not work
        // if (o && o === this.offset && this.block instanceof PatternInputDefinition) continue;
        return true;
      });
    }
    pushRightBeforeRequired() {
      return this._pushRight(() => {
        if (this.block.isFixed || this.block.isOptional && !this.block.value) return;

        // TODO check |[*]XX_
        this.offset = this.block.nearestInputPos(this.offset, DIRECTION.NONE);
        return true;
      });
    }
  }

  class PatternFixedDefinition {
    /** */

    /** */

    /** */

    /** */

    /** */

    /** */

    constructor(opts) {
      Object.assign(this, opts);
      this._value = '';
      this.isFixed = true;
    }
    get value() {
      return this._value;
    }
    get unmaskedValue() {
      return this.isUnmasking ? this.value : '';
    }
    get rawInputValue() {
      return this._isRawInput ? this.value : '';
    }
    get displayValue() {
      return this.value;
    }
    reset() {
      this._isRawInput = false;
      this._value = '';
    }
    remove(fromPos, toPos) {
      if (fromPos === void 0) {
        fromPos = 0;
      }
      if (toPos === void 0) {
        toPos = this._value.length;
      }
      this._value = this._value.slice(0, fromPos) + this._value.slice(toPos);
      if (!this._value) this._isRawInput = false;
      return new ChangeDetails();
    }
    nearestInputPos(cursorPos, direction) {
      if (direction === void 0) {
        direction = DIRECTION.NONE;
      }
      const minPos = 0;
      const maxPos = this._value.length;
      switch (direction) {
        case DIRECTION.LEFT:
        case DIRECTION.FORCE_LEFT:
          return minPos;
        case DIRECTION.NONE:
        case DIRECTION.RIGHT:
        case DIRECTION.FORCE_RIGHT:
        default:
          return maxPos;
      }
    }
    totalInputPositions(fromPos, toPos) {
      if (fromPos === void 0) {
        fromPos = 0;
      }
      if (toPos === void 0) {
        toPos = this._value.length;
      }
      return this._isRawInput ? toPos - fromPos : 0;
    }
    extractInput(fromPos, toPos, flags) {
      if (fromPos === void 0) {
        fromPos = 0;
      }
      if (toPos === void 0) {
        toPos = this._value.length;
      }
      if (flags === void 0) {
        flags = {};
      }
      return flags.raw && this._isRawInput && this._value.slice(fromPos, toPos) || '';
    }
    get isComplete() {
      return true;
    }
    get isFilled() {
      return Boolean(this._value);
    }
    _appendChar(ch, flags) {
      if (flags === void 0) {
        flags = {};
      }
      const details = new ChangeDetails();
      if (this.isFilled) return details;
      const appendEager = this.eager === true || this.eager === 'append';
      const appended = this.char === ch;
      const isResolved = appended && (this.isUnmasking || flags.input || flags.raw) && (!flags.raw || !appendEager) && !flags.tail;
      if (isResolved) details.rawInserted = this.char;
      this._value = details.inserted = this.char;
      this._isRawInput = isResolved && (flags.raw || flags.input);
      return details;
    }
    _appendEager() {
      return this._appendChar(this.char, {
        tail: true
      });
    }
    _appendPlaceholder() {
      const details = new ChangeDetails();
      if (this.isFilled) return details;
      this._value = details.inserted = this.char;
      return details;
    }
    extractTail() {
      return new ContinuousTailDetails('');
    }
    appendTail(tail) {
      if (isString(tail)) tail = new ContinuousTailDetails(String(tail));
      return tail.appendTo(this);
    }
    append(str, flags, tail) {
      const details = this._appendChar(str[0], flags);
      if (tail != null) {
        details.tailShift += this.appendTail(tail).tailShift;
      }
      return details;
    }
    doCommit() {}
    get state() {
      return {
        _value: this._value,
        _rawInputValue: this.rawInputValue
      };
    }
    set state(state) {
      this._value = state._value;
      this._isRawInput = Boolean(state._rawInputValue);
    }
  }

  class PatternInputDefinition {
    /** */

    /** */

    /** */

    /** */

    /** */

    /** */

    /** */

    /** */

    constructor(opts) {
      const {
        parent,
        isOptional,
        placeholderChar,
        displayChar,
        lazy,
        eager,
        ...maskOpts
      } = opts;
      this.masked = createMask(maskOpts);
      Object.assign(this, {
        parent,
        isOptional,
        placeholderChar,
        displayChar,
        lazy,
        eager
      });
    }
    reset() {
      this.isFilled = false;
      this.masked.reset();
    }
    remove(fromPos, toPos) {
      if (fromPos === void 0) {
        fromPos = 0;
      }
      if (toPos === void 0) {
        toPos = this.value.length;
      }
      if (fromPos === 0 && toPos >= 1) {
        this.isFilled = false;
        return this.masked.remove(fromPos, toPos);
      }
      return new ChangeDetails();
    }
    get value() {
      return this.masked.value || (this.isFilled && !this.isOptional ? this.placeholderChar : '');
    }
    get unmaskedValue() {
      return this.masked.unmaskedValue;
    }
    get rawInputValue() {
      return this.masked.rawInputValue;
    }
    get displayValue() {
      return this.masked.value && this.displayChar || this.value;
    }
    get isComplete() {
      return Boolean(this.masked.value) || this.isOptional;
    }
    _appendChar(ch, flags) {
      if (flags === void 0) {
        flags = {};
      }
      if (this.isFilled) return new ChangeDetails();
      const state = this.masked.state;
      // simulate input
      const details = this.masked._appendChar(ch, this.currentMaskFlags(flags));
      if (details.inserted && this.doValidate(flags) === false) {
        details.inserted = details.rawInserted = '';
        this.masked.state = state;
      }
      if (!details.inserted && !this.isOptional && !this.lazy && !flags.input) {
        details.inserted = this.placeholderChar;
      }
      details.skip = !details.inserted && !this.isOptional;
      this.isFilled = Boolean(details.inserted);
      return details;
    }
    append(str, flags, tail) {
      // TODO probably should be done via _appendChar
      return this.masked.append(str, this.currentMaskFlags(flags), tail);
    }
    _appendPlaceholder() {
      const details = new ChangeDetails();
      if (this.isFilled || this.isOptional) return details;
      this.isFilled = true;
      details.inserted = this.placeholderChar;
      return details;
    }
    _appendEager() {
      return new ChangeDetails();
    }
    extractTail(fromPos, toPos) {
      return this.masked.extractTail(fromPos, toPos);
    }
    appendTail(tail) {
      return this.masked.appendTail(tail);
    }
    extractInput(fromPos, toPos, flags) {
      if (fromPos === void 0) {
        fromPos = 0;
      }
      if (toPos === void 0) {
        toPos = this.value.length;
      }
      return this.masked.extractInput(fromPos, toPos, flags);
    }
    nearestInputPos(cursorPos, direction) {
      if (direction === void 0) {
        direction = DIRECTION.NONE;
      }
      const minPos = 0;
      const maxPos = this.value.length;
      const boundPos = Math.min(Math.max(cursorPos, minPos), maxPos);
      switch (direction) {
        case DIRECTION.LEFT:
        case DIRECTION.FORCE_LEFT:
          return this.isComplete ? boundPos : minPos;
        case DIRECTION.RIGHT:
        case DIRECTION.FORCE_RIGHT:
          return this.isComplete ? boundPos : maxPos;
        case DIRECTION.NONE:
        default:
          return boundPos;
      }
    }
    totalInputPositions(fromPos, toPos) {
      if (fromPos === void 0) {
        fromPos = 0;
      }
      if (toPos === void 0) {
        toPos = this.value.length;
      }
      return this.value.slice(fromPos, toPos).length;
    }
    doValidate(flags) {
      return this.masked.doValidate(this.currentMaskFlags(flags)) && (!this.parent || this.parent.doValidate(this.currentMaskFlags(flags)));
    }
    doCommit() {
      this.masked.doCommit();
    }
    get state() {
      return {
        _value: this.value,
        _rawInputValue: this.rawInputValue,
        masked: this.masked.state,
        isFilled: this.isFilled
      };
    }
    set state(state) {
      this.masked.state = state.masked;
      this.isFilled = state.isFilled;
    }
    currentMaskFlags(flags) {
      var _flags$_beforeTailSta;
      return {
        ...flags,
        _beforeTailState: (flags == null || (_flags$_beforeTailSta = flags._beforeTailState) == null ? void 0 : _flags$_beforeTailSta.masked) || (flags == null ? void 0 : flags._beforeTailState)
      };
    }
  }
  PatternInputDefinition.DEFAULT_DEFINITIONS = {
    '0': /\d/,
    'a': /[\u0041-\u005A\u0061-\u007A\u00AA\u00B5\u00BA\u00C0-\u00D6\u00D8-\u00F6\u00F8-\u02C1\u02C6-\u02D1\u02E0-\u02E4\u02EC\u02EE\u0370-\u0374\u0376\u0377\u037A-\u037D\u0386\u0388-\u038A\u038C\u038E-\u03A1\u03A3-\u03F5\u03F7-\u0481\u048A-\u0527\u0531-\u0556\u0559\u0561-\u0587\u05D0-\u05EA\u05F0-\u05F2\u0620-\u064A\u066E\u066F\u0671-\u06D3\u06D5\u06E5\u06E6\u06EE\u06EF\u06FA-\u06FC\u06FF\u0710\u0712-\u072F\u074D-\u07A5\u07B1\u07CA-\u07EA\u07F4\u07F5\u07FA\u0800-\u0815\u081A\u0824\u0828\u0840-\u0858\u08A0\u08A2-\u08AC\u0904-\u0939\u093D\u0950\u0958-\u0961\u0971-\u0977\u0979-\u097F\u0985-\u098C\u098F\u0990\u0993-\u09A8\u09AA-\u09B0\u09B2\u09B6-\u09B9\u09BD\u09CE\u09DC\u09DD\u09DF-\u09E1\u09F0\u09F1\u0A05-\u0A0A\u0A0F\u0A10\u0A13-\u0A28\u0A2A-\u0A30\u0A32\u0A33\u0A35\u0A36\u0A38\u0A39\u0A59-\u0A5C\u0A5E\u0A72-\u0A74\u0A85-\u0A8D\u0A8F-\u0A91\u0A93-\u0AA8\u0AAA-\u0AB0\u0AB2\u0AB3\u0AB5-\u0AB9\u0ABD\u0AD0\u0AE0\u0AE1\u0B05-\u0B0C\u0B0F\u0B10\u0B13-\u0B28\u0B2A-\u0B30\u0B32\u0B33\u0B35-\u0B39\u0B3D\u0B5C\u0B5D\u0B5F-\u0B61\u0B71\u0B83\u0B85-\u0B8A\u0B8E-\u0B90\u0B92-\u0B95\u0B99\u0B9A\u0B9C\u0B9E\u0B9F\u0BA3\u0BA4\u0BA8-\u0BAA\u0BAE-\u0BB9\u0BD0\u0C05-\u0C0C\u0C0E-\u0C10\u0C12-\u0C28\u0C2A-\u0C33\u0C35-\u0C39\u0C3D\u0C58\u0C59\u0C60\u0C61\u0C85-\u0C8C\u0C8E-\u0C90\u0C92-\u0CA8\u0CAA-\u0CB3\u0CB5-\u0CB9\u0CBD\u0CDE\u0CE0\u0CE1\u0CF1\u0CF2\u0D05-\u0D0C\u0D0E-\u0D10\u0D12-\u0D3A\u0D3D\u0D4E\u0D60\u0D61\u0D7A-\u0D7F\u0D85-\u0D96\u0D9A-\u0DB1\u0DB3-\u0DBB\u0DBD\u0DC0-\u0DC6\u0E01-\u0E30\u0E32\u0E33\u0E40-\u0E46\u0E81\u0E82\u0E84\u0E87\u0E88\u0E8A\u0E8D\u0E94-\u0E97\u0E99-\u0E9F\u0EA1-\u0EA3\u0EA5\u0EA7\u0EAA\u0EAB\u0EAD-\u0EB0\u0EB2\u0EB3\u0EBD\u0EC0-\u0EC4\u0EC6\u0EDC-\u0EDF\u0F00\u0F40-\u0F47\u0F49-\u0F6C\u0F88-\u0F8C\u1000-\u102A\u103F\u1050-\u1055\u105A-\u105D\u1061\u1065\u1066\u106E-\u1070\u1075-\u1081\u108E\u10A0-\u10C5\u10C7\u10CD\u10D0-\u10FA\u10FC-\u1248\u124A-\u124D\u1250-\u1256\u1258\u125A-\u125D\u1260-\u1288\u128A-\u128D\u1290-\u12B0\u12B2-\u12B5\u12B8-\u12BE\u12C0\u12C2-\u12C5\u12C8-\u12D6\u12D8-\u1310\u1312-\u1315\u1318-\u135A\u1380-\u138F\u13A0-\u13F4\u1401-\u166C\u166F-\u167F\u1681-\u169A\u16A0-\u16EA\u1700-\u170C\u170E-\u1711\u1720-\u1731\u1740-\u1751\u1760-\u176C\u176E-\u1770\u1780-\u17B3\u17D7\u17DC\u1820-\u1877\u1880-\u18A8\u18AA\u18B0-\u18F5\u1900-\u191C\u1950-\u196D\u1970-\u1974\u1980-\u19AB\u19C1-\u19C7\u1A00-\u1A16\u1A20-\u1A54\u1AA7\u1B05-\u1B33\u1B45-\u1B4B\u1B83-\u1BA0\u1BAE\u1BAF\u1BBA-\u1BE5\u1C00-\u1C23\u1C4D-\u1C4F\u1C5A-\u1C7D\u1CE9-\u1CEC\u1CEE-\u1CF1\u1CF5\u1CF6\u1D00-\u1DBF\u1E00-\u1F15\u1F18-\u1F1D\u1F20-\u1F45\u1F48-\u1F4D\u1F50-\u1F57\u1F59\u1F5B\u1F5D\u1F5F-\u1F7D\u1F80-\u1FB4\u1FB6-\u1FBC\u1FBE\u1FC2-\u1FC4\u1FC6-\u1FCC\u1FD0-\u1FD3\u1FD6-\u1FDB\u1FE0-\u1FEC\u1FF2-\u1FF4\u1FF6-\u1FFC\u2071\u207F\u2090-\u209C\u2102\u2107\u210A-\u2113\u2115\u2119-\u211D\u2124\u2126\u2128\u212A-\u212D\u212F-\u2139\u213C-\u213F\u2145-\u2149\u214E\u2183\u2184\u2C00-\u2C2E\u2C30-\u2C5E\u2C60-\u2CE4\u2CEB-\u2CEE\u2CF2\u2CF3\u2D00-\u2D25\u2D27\u2D2D\u2D30-\u2D67\u2D6F\u2D80-\u2D96\u2DA0-\u2DA6\u2DA8-\u2DAE\u2DB0-\u2DB6\u2DB8-\u2DBE\u2DC0-\u2DC6\u2DC8-\u2DCE\u2DD0-\u2DD6\u2DD8-\u2DDE\u2E2F\u3005\u3006\u3031-\u3035\u303B\u303C\u3041-\u3096\u309D-\u309F\u30A1-\u30FA\u30FC-\u30FF\u3105-\u312D\u3131-\u318E\u31A0-\u31BA\u31F0-\u31FF\u3400-\u4DB5\u4E00-\u9FCC\uA000-\uA48C\uA4D0-\uA4FD\uA500-\uA60C\uA610-\uA61F\uA62A\uA62B\uA640-\uA66E\uA67F-\uA697\uA6A0-\uA6E5\uA717-\uA71F\uA722-\uA788\uA78B-\uA78E\uA790-\uA793\uA7A0-\uA7AA\uA7F8-\uA801\uA803-\uA805\uA807-\uA80A\uA80C-\uA822\uA840-\uA873\uA882-\uA8B3\uA8F2-\uA8F7\uA8FB\uA90A-\uA925\uA930-\uA946\uA960-\uA97C\uA984-\uA9B2\uA9CF\uAA00-\uAA28\uAA40-\uAA42\uAA44-\uAA4B\uAA60-\uAA76\uAA7A\uAA80-\uAAAF\uAAB1\uAAB5\uAAB6\uAAB9-\uAABD\uAAC0\uAAC2\uAADB-\uAADD\uAAE0-\uAAEA\uAAF2-\uAAF4\uAB01-\uAB06\uAB09-\uAB0E\uAB11-\uAB16\uAB20-\uAB26\uAB28-\uAB2E\uABC0-\uABE2\uAC00-\uD7A3\uD7B0-\uD7C6\uD7CB-\uD7FB\uF900-\uFA6D\uFA70-\uFAD9\uFB00-\uFB06\uFB13-\uFB17\uFB1D\uFB1F-\uFB28\uFB2A-\uFB36\uFB38-\uFB3C\uFB3E\uFB40\uFB41\uFB43\uFB44\uFB46-\uFBB1\uFBD3-\uFD3D\uFD50-\uFD8F\uFD92-\uFDC7\uFDF0-\uFDFB\uFE70-\uFE74\uFE76-\uFEFC\uFF21-\uFF3A\uFF41-\uFF5A\uFF66-\uFFBE\uFFC2-\uFFC7\uFFCA-\uFFCF\uFFD2-\uFFD7\uFFDA-\uFFDC]/,
    // http://stackoverflow.com/a/22075070
    '*': /./
  };

  /** Masking by RegExp */
  class MaskedRegExp extends Masked {
    /** */

    /** Enable characters overwriting */

    /** */

    /** */

    updateOptions(opts) {
      super.updateOptions(opts);
    }
    _update(opts) {
      const mask = opts.mask;
      if (mask) opts.validate = value => value.search(mask) >= 0;
      super._update(opts);
    }
  }
  IMask.MaskedRegExp = MaskedRegExp;

  /** Pattern mask */
  class MaskedPattern extends Masked {
    /** */

    /** */

    /** Single char for empty input */

    /** Single char for filled input */

    /** Show placeholder only when needed */

    /** Enable characters overwriting */

    /** */

    /** */

    constructor(opts) {
      super({
        ...MaskedPattern.DEFAULTS,
        ...opts,
        definitions: Object.assign({}, PatternInputDefinition.DEFAULT_DEFINITIONS, opts == null ? void 0 : opts.definitions)
      });
    }
    updateOptions(opts) {
      super.updateOptions(opts);
    }
    _update(opts) {
      opts.definitions = Object.assign({}, this.definitions, opts.definitions);
      super._update(opts);
      this._rebuildMask();
    }
    _rebuildMask() {
      const defs = this.definitions;
      this._blocks = [];
      this.exposeBlock = undefined;
      this._stops = [];
      this._maskedBlocks = {};
      const pattern = this.mask;
      if (!pattern || !defs) return;
      let unmaskingBlock = false;
      let optionalBlock = false;
      for (let i = 0; i < pattern.length; ++i) {
        if (this.blocks) {
          const p = pattern.slice(i);
          const bNames = Object.keys(this.blocks).filter(bName => p.indexOf(bName) === 0);
          // order by key length
          bNames.sort((a, b) => b.length - a.length);
          // use block name with max length
          const bName = bNames[0];
          if (bName) {
            const {
              expose,
              ...blockOpts
            } = normalizeOpts(this.blocks[bName]);
            const maskedBlock = createMask({
              lazy: this.lazy,
              eager: this.eager,
              placeholderChar: this.placeholderChar,
              displayChar: this.displayChar,
              overwrite: this.overwrite,
              ...blockOpts,
              parent: this
            });
            if (maskedBlock) {
              this._blocks.push(maskedBlock);
              if (expose) this.exposeBlock = maskedBlock;

              // store block index
              if (!this._maskedBlocks[bName]) this._maskedBlocks[bName] = [];
              this._maskedBlocks[bName].push(this._blocks.length - 1);
            }
            i += bName.length - 1;
            continue;
          }
        }
        let char = pattern[i];
        let isInput = (char in defs);
        if (char === MaskedPattern.STOP_CHAR) {
          this._stops.push(this._blocks.length);
          continue;
        }
        if (char === '{' || char === '}') {
          unmaskingBlock = !unmaskingBlock;
          continue;
        }
        if (char === '[' || char === ']') {
          optionalBlock = !optionalBlock;
          continue;
        }
        if (char === MaskedPattern.ESCAPE_CHAR) {
          ++i;
          char = pattern[i];
          if (!char) break;
          isInput = false;
        }
        const def = isInput ? new PatternInputDefinition({
          isOptional: optionalBlock,
          lazy: this.lazy,
          eager: this.eager,
          placeholderChar: this.placeholderChar,
          displayChar: this.displayChar,
          ...normalizeOpts(defs[char]),
          parent: this
        }) : new PatternFixedDefinition({
          char,
          eager: this.eager,
          isUnmasking: unmaskingBlock
        });
        this._blocks.push(def);
      }
    }
    get state() {
      return {
        ...super.state,
        _blocks: this._blocks.map(b => b.state)
      };
    }
    set state(state) {
      const {
        _blocks,
        ...maskedState
      } = state;
      this._blocks.forEach((b, bi) => b.state = _blocks[bi]);
      super.state = maskedState;
    }
    reset() {
      super.reset();
      this._blocks.forEach(b => b.reset());
    }
    get isComplete() {
      return this.exposeBlock ? this.exposeBlock.isComplete : this._blocks.every(b => b.isComplete);
    }
    get isFilled() {
      return this._blocks.every(b => b.isFilled);
    }
    get isFixed() {
      return this._blocks.every(b => b.isFixed);
    }
    get isOptional() {
      return this._blocks.every(b => b.isOptional);
    }
    doCommit() {
      this._blocks.forEach(b => b.doCommit());
      super.doCommit();
    }
    get unmaskedValue() {
      return this.exposeBlock ? this.exposeBlock.unmaskedValue : this._blocks.reduce((str, b) => str += b.unmaskedValue, '');
    }
    set unmaskedValue(unmaskedValue) {
      if (this.exposeBlock) {
        const tail = this.extractTail(this._blockStartPos(this._blocks.indexOf(this.exposeBlock)) + this.exposeBlock.displayValue.length);
        this.exposeBlock.unmaskedValue = unmaskedValue;
        this.appendTail(tail);
        this.doCommit();
      } else super.unmaskedValue = unmaskedValue;
    }
    get value() {
      return this.exposeBlock ? this.exposeBlock.value :
      // TODO return _value when not in change?
      this._blocks.reduce((str, b) => str += b.value, '');
    }
    set value(value) {
      if (this.exposeBlock) {
        const tail = this.extractTail(this._blockStartPos(this._blocks.indexOf(this.exposeBlock)) + this.exposeBlock.displayValue.length);
        this.exposeBlock.value = value;
        this.appendTail(tail);
        this.doCommit();
      } else super.value = value;
    }
    get typedValue() {
      return this.exposeBlock ? this.exposeBlock.typedValue : super.typedValue;
    }
    set typedValue(value) {
      if (this.exposeBlock) {
        const tail = this.extractTail(this._blockStartPos(this._blocks.indexOf(this.exposeBlock)) + this.exposeBlock.displayValue.length);
        this.exposeBlock.typedValue = value;
        this.appendTail(tail);
        this.doCommit();
      } else super.typedValue = value;
    }
    get displayValue() {
      return this._blocks.reduce((str, b) => str += b.displayValue, '');
    }
    appendTail(tail) {
      return super.appendTail(tail).aggregate(this._appendPlaceholder());
    }
    _appendEager() {
      var _this$_mapPosToBlock;
      const details = new ChangeDetails();
      let startBlockIndex = (_this$_mapPosToBlock = this._mapPosToBlock(this.displayValue.length)) == null ? void 0 : _this$_mapPosToBlock.index;
      if (startBlockIndex == null) return details;

      // TODO test if it works for nested pattern masks
      if (this._blocks[startBlockIndex].isFilled) ++startBlockIndex;
      for (let bi = startBlockIndex; bi < this._blocks.length; ++bi) {
        const d = this._blocks[bi]._appendEager();
        if (!d.inserted) break;
        details.aggregate(d);
      }
      return details;
    }
    _appendCharRaw(ch, flags) {
      if (flags === void 0) {
        flags = {};
      }
      const blockIter = this._mapPosToBlock(this.displayValue.length);
      const details = new ChangeDetails();
      if (!blockIter) return details;
      for (let bi = blockIter.index;; ++bi) {
        var _flags$_beforeTailSta;
        const block = this._blocks[bi];
        if (!block) break;
        const blockDetails = block._appendChar(ch, {
          ...flags,
          _beforeTailState: (_flags$_beforeTailSta = flags._beforeTailState) == null || (_flags$_beforeTailSta = _flags$_beforeTailSta._blocks) == null ? void 0 : _flags$_beforeTailSta[bi]
        });
        const skip = blockDetails.skip;
        details.aggregate(blockDetails);
        if (skip || blockDetails.rawInserted) break; // go next char
      }

      return details;
    }
    extractTail(fromPos, toPos) {
      if (fromPos === void 0) {
        fromPos = 0;
      }
      if (toPos === void 0) {
        toPos = this.displayValue.length;
      }
      const chunkTail = new ChunksTailDetails();
      if (fromPos === toPos) return chunkTail;
      this._forEachBlocksInRange(fromPos, toPos, (b, bi, bFromPos, bToPos) => {
        const blockChunk = b.extractTail(bFromPos, bToPos);
        blockChunk.stop = this._findStopBefore(bi);
        blockChunk.from = this._blockStartPos(bi);
        if (blockChunk instanceof ChunksTailDetails) blockChunk.blockIndex = bi;
        chunkTail.extend(blockChunk);
      });
      return chunkTail;
    }
    extractInput(fromPos, toPos, flags) {
      if (fromPos === void 0) {
        fromPos = 0;
      }
      if (toPos === void 0) {
        toPos = this.displayValue.length;
      }
      if (flags === void 0) {
        flags = {};
      }
      if (fromPos === toPos) return '';
      let input = '';
      this._forEachBlocksInRange(fromPos, toPos, (b, _, fromPos, toPos) => {
        input += b.extractInput(fromPos, toPos, flags);
      });
      return input;
    }
    _findStopBefore(blockIndex) {
      let stopBefore;
      for (let si = 0; si < this._stops.length; ++si) {
        const stop = this._stops[si];
        if (stop <= blockIndex) stopBefore = stop;else break;
      }
      return stopBefore;
    }

    /** Appends placeholder depending on laziness */
    _appendPlaceholder(toBlockIndex) {
      const details = new ChangeDetails();
      if (this.lazy && toBlockIndex == null) return details;
      const startBlockIter = this._mapPosToBlock(this.displayValue.length);
      if (!startBlockIter) return details;
      const startBlockIndex = startBlockIter.index;
      const endBlockIndex = toBlockIndex != null ? toBlockIndex : this._blocks.length;
      this._blocks.slice(startBlockIndex, endBlockIndex).forEach(b => {
        if (!b.lazy || toBlockIndex != null) {
          var _blocks2;
          const bDetails = b._appendPlaceholder((_blocks2 = b._blocks) == null ? void 0 : _blocks2.length);
          this._value += bDetails.inserted;
          details.aggregate(bDetails);
        }
      });
      return details;
    }

    /** Finds block in pos */
    _mapPosToBlock(pos) {
      let accVal = '';
      for (let bi = 0; bi < this._blocks.length; ++bi) {
        const block = this._blocks[bi];
        const blockStartPos = accVal.length;
        accVal += block.displayValue;
        if (pos <= accVal.length) {
          return {
            index: bi,
            offset: pos - blockStartPos
          };
        }
      }
    }
    _blockStartPos(blockIndex) {
      return this._blocks.slice(0, blockIndex).reduce((pos, b) => pos += b.displayValue.length, 0);
    }
    _forEachBlocksInRange(fromPos, toPos, fn) {
      if (toPos === void 0) {
        toPos = this.displayValue.length;
      }
      const fromBlockIter = this._mapPosToBlock(fromPos);
      if (fromBlockIter) {
        const toBlockIter = this._mapPosToBlock(toPos);
        // process first block
        const isSameBlock = toBlockIter && fromBlockIter.index === toBlockIter.index;
        const fromBlockStartPos = fromBlockIter.offset;
        const fromBlockEndPos = toBlockIter && isSameBlock ? toBlockIter.offset : this._blocks[fromBlockIter.index].displayValue.length;
        fn(this._blocks[fromBlockIter.index], fromBlockIter.index, fromBlockStartPos, fromBlockEndPos);
        if (toBlockIter && !isSameBlock) {
          // process intermediate blocks
          for (let bi = fromBlockIter.index + 1; bi < toBlockIter.index; ++bi) {
            fn(this._blocks[bi], bi, 0, this._blocks[bi].displayValue.length);
          }

          // process last block
          fn(this._blocks[toBlockIter.index], toBlockIter.index, 0, toBlockIter.offset);
        }
      }
    }
    remove(fromPos, toPos) {
      if (fromPos === void 0) {
        fromPos = 0;
      }
      if (toPos === void 0) {
        toPos = this.displayValue.length;
      }
      const removeDetails = super.remove(fromPos, toPos);
      this._forEachBlocksInRange(fromPos, toPos, (b, _, bFromPos, bToPos) => {
        removeDetails.aggregate(b.remove(bFromPos, bToPos));
      });
      return removeDetails;
    }
    nearestInputPos(cursorPos, direction) {
      if (direction === void 0) {
        direction = DIRECTION.NONE;
      }
      if (!this._blocks.length) return 0;
      const cursor = new PatternCursor(this, cursorPos);
      if (direction === DIRECTION.NONE) {
        // -------------------------------------------------
        // NONE should only go out from fixed to the right!
        // -------------------------------------------------
        if (cursor.pushRightBeforeInput()) return cursor.pos;
        cursor.popState();
        if (cursor.pushLeftBeforeInput()) return cursor.pos;
        return this.displayValue.length;
      }

      // FORCE is only about a|* otherwise is 0
      if (direction === DIRECTION.LEFT || direction === DIRECTION.FORCE_LEFT) {
        // try to break fast when *|a
        if (direction === DIRECTION.LEFT) {
          cursor.pushRightBeforeFilled();
          if (cursor.ok && cursor.pos === cursorPos) return cursorPos;
          cursor.popState();
        }

        // forward flow
        cursor.pushLeftBeforeInput();
        cursor.pushLeftBeforeRequired();
        cursor.pushLeftBeforeFilled();

        // backward flow
        if (direction === DIRECTION.LEFT) {
          cursor.pushRightBeforeInput();
          cursor.pushRightBeforeRequired();
          if (cursor.ok && cursor.pos <= cursorPos) return cursor.pos;
          cursor.popState();
          if (cursor.ok && cursor.pos <= cursorPos) return cursor.pos;
          cursor.popState();
        }
        if (cursor.ok) return cursor.pos;
        if (direction === DIRECTION.FORCE_LEFT) return 0;
        cursor.popState();
        if (cursor.ok) return cursor.pos;
        cursor.popState();
        if (cursor.ok) return cursor.pos;
        return 0;
      }
      if (direction === DIRECTION.RIGHT || direction === DIRECTION.FORCE_RIGHT) {
        // forward flow
        cursor.pushRightBeforeInput();
        cursor.pushRightBeforeRequired();
        if (cursor.pushRightBeforeFilled()) return cursor.pos;
        if (direction === DIRECTION.FORCE_RIGHT) return this.displayValue.length;

        // backward flow
        cursor.popState();
        if (cursor.ok) return cursor.pos;
        cursor.popState();
        if (cursor.ok) return cursor.pos;
        return this.nearestInputPos(cursorPos, DIRECTION.LEFT);
      }
      return cursorPos;
    }
    totalInputPositions(fromPos, toPos) {
      if (fromPos === void 0) {
        fromPos = 0;
      }
      if (toPos === void 0) {
        toPos = this.displayValue.length;
      }
      let total = 0;
      this._forEachBlocksInRange(fromPos, toPos, (b, _, bFromPos, bToPos) => {
        total += b.totalInputPositions(bFromPos, bToPos);
      });
      return total;
    }

    /** Get block by name */
    maskedBlock(name) {
      return this.maskedBlocks(name)[0];
    }

    /** Get all blocks by name */
    maskedBlocks(name) {
      const indices = this._maskedBlocks[name];
      if (!indices) return [];
      return indices.map(gi => this._blocks[gi]);
    }
  }
  MaskedPattern.DEFAULTS = {
    lazy: true,
    placeholderChar: '_'
  };
  MaskedPattern.STOP_CHAR = '`';
  MaskedPattern.ESCAPE_CHAR = '\\';
  MaskedPattern.InputDefinition = PatternInputDefinition;
  MaskedPattern.FixedDefinition = PatternFixedDefinition;
  IMask.MaskedPattern = MaskedPattern;

  /** Pattern which accepts ranges */
  class MaskedRange extends MaskedPattern {
    /**
      Optionally sets max length of pattern.
      Used when pattern length is longer then `to` param length. Pads zeros at start in this case.
    */

    /** Min bound */

    /** Max bound */

    /** */

    get _matchFrom() {
      return this.maxLength - String(this.from).length;
    }
    constructor(opts) {
      super(opts); // mask will be created in _update
    }

    updateOptions(opts) {
      super.updateOptions(opts);
    }
    _update(opts) {
      const {
        to = this.to || 0,
        from = this.from || 0,
        maxLength = this.maxLength || 0,
        autofix = this.autofix,
        ...patternOpts
      } = opts;
      this.to = to;
      this.from = from;
      this.maxLength = Math.max(String(to).length, maxLength);
      this.autofix = autofix;
      const fromStr = String(this.from).padStart(this.maxLength, '0');
      const toStr = String(this.to).padStart(this.maxLength, '0');
      let sameCharsCount = 0;
      while (sameCharsCount < toStr.length && toStr[sameCharsCount] === fromStr[sameCharsCount]) ++sameCharsCount;
      patternOpts.mask = toStr.slice(0, sameCharsCount).replace(/0/g, '\\0') + '0'.repeat(this.maxLength - sameCharsCount);
      super._update(patternOpts);
    }
    get isComplete() {
      return super.isComplete && Boolean(this.value);
    }
    boundaries(str) {
      let minstr = '';
      let maxstr = '';
      const [, placeholder, num] = str.match(/^(\D*)(\d*)(\D*)/) || [];
      if (num) {
        minstr = '0'.repeat(placeholder.length) + num;
        maxstr = '9'.repeat(placeholder.length) + num;
      }
      minstr = minstr.padEnd(this.maxLength, '0');
      maxstr = maxstr.padEnd(this.maxLength, '9');
      return [minstr, maxstr];
    }
    doPrepareChar(ch, flags) {
      if (flags === void 0) {
        flags = {};
      }
      let details;
      [ch, details] = super.doPrepareChar(ch.replace(/\D/g, ''), flags);
      if (!this.autofix || !ch) return [ch, details];
      const fromStr = String(this.from).padStart(this.maxLength, '0');
      const toStr = String(this.to).padStart(this.maxLength, '0');
      const nextVal = this.value + ch;
      if (nextVal.length > this.maxLength) return ['', details];
      const [minstr, maxstr] = this.boundaries(nextVal);
      if (Number(maxstr) < this.from) return [fromStr[nextVal.length - 1], details];
      if (Number(minstr) > this.to) {
        if (this.autofix === 'pad' && nextVal.length < this.maxLength) {
          return ['', details.aggregate(this.append(fromStr[nextVal.length - 1] + ch, flags))];
        }
        return [toStr[nextVal.length - 1], details];
      }
      return [ch, details];
    }
    doValidate(flags) {
      const str = this.value;
      const firstNonZero = str.search(/[^0]/);
      if (firstNonZero === -1 && str.length <= this._matchFrom) return true;
      const [minstr, maxstr] = this.boundaries(str);
      return this.from <= Number(maxstr) && Number(minstr) <= this.to && super.doValidate(flags);
    }
  }
  IMask.MaskedRange = MaskedRange;

  /** Date mask */
  class MaskedDate extends MaskedPattern {
    /** Pattern mask for date according to {@link MaskedDate#format} */

    /** Start date */

    /** End date */

    /** */

    /** Format typed value to string */

    /** Parse string to get typed value */

    constructor(opts) {
      const {
        mask,
        pattern,
        ...patternOpts
      } = {
        ...MaskedDate.DEFAULTS,
        ...opts
      };
      super({
        ...patternOpts,
        mask: isString(mask) ? mask : pattern
      });
    }
    updateOptions(opts) {
      super.updateOptions(opts);
    }
    _update(opts) {
      const {
        mask,
        pattern,
        blocks,
        ...patternOpts
      } = {
        ...MaskedDate.DEFAULTS,
        ...opts
      };
      const patternBlocks = Object.assign({}, MaskedDate.GET_DEFAULT_BLOCKS());
      // adjust year block
      if (opts.min) patternBlocks.Y.from = opts.min.getFullYear();
      if (opts.max) patternBlocks.Y.to = opts.max.getFullYear();
      if (opts.min && opts.max && patternBlocks.Y.from === patternBlocks.Y.to) {
        patternBlocks.m.from = opts.min.getMonth() + 1;
        patternBlocks.m.to = opts.max.getMonth() + 1;
        if (patternBlocks.m.from === patternBlocks.m.to) {
          patternBlocks.d.from = opts.min.getDate();
          patternBlocks.d.to = opts.max.getDate();
        }
      }
      Object.assign(patternBlocks, this.blocks, blocks);

      // add autofix
      Object.keys(patternBlocks).forEach(bk => {
        const b = patternBlocks[bk];
        if (!('autofix' in b) && 'autofix' in opts) b.autofix = opts.autofix;
      });
      super._update({
        ...patternOpts,
        mask: isString(mask) ? mask : pattern,
        blocks: patternBlocks
      });
    }
    doValidate(flags) {
      const date = this.date;
      return super.doValidate(flags) && (!this.isComplete || this.isDateExist(this.value) && date != null && (this.min == null || this.min <= date) && (this.max == null || date <= this.max));
    }

    /** Checks if date is exists */
    isDateExist(str) {
      return this.format(this.parse(str, this), this).indexOf(str) >= 0;
    }

    /** Parsed Date */
    get date() {
      return this.typedValue;
    }
    set date(date) {
      this.typedValue = date;
    }
    get typedValue() {
      return this.isComplete ? super.typedValue : null;
    }
    set typedValue(value) {
      super.typedValue = value;
    }
    maskEquals(mask) {
      return mask === Date || super.maskEquals(mask);
    }
  }
  MaskedDate.GET_DEFAULT_BLOCKS = () => ({
    d: {
      mask: MaskedRange,
      from: 1,
      to: 31,
      maxLength: 2
    },
    m: {
      mask: MaskedRange,
      from: 1,
      to: 12,
      maxLength: 2
    },
    Y: {
      mask: MaskedRange,
      from: 1900,
      to: 9999
    }
  });
  MaskedDate.DEFAULTS = {
    mask: Date,
    pattern: 'd{.}`m{.}`Y',
    format: (date, masked) => {
      if (!date) return '';
      const day = String(date.getDate()).padStart(2, '0');
      const month = String(date.getMonth() + 1).padStart(2, '0');
      const year = date.getFullYear();
      return [day, month, year].join('.');
    },
    parse: (str, masked) => {
      const [day, month, year] = str.split('.').map(Number);
      return new Date(year, month - 1, day);
    }
  };
  IMask.MaskedDate = MaskedDate;

  /** Dynamic mask for choosing appropriate mask in run-time */
  class MaskedDynamic extends Masked {
    /** Currently chosen mask */

    /** Currently chosen mask */

    /** Compliled {@link Masked} options */

    /** Chooses {@link Masked} depending on input value */

    constructor(opts) {
      super({
        ...MaskedDynamic.DEFAULTS,
        ...opts
      });
      this.currentMask = undefined;
    }
    updateOptions(opts) {
      super.updateOptions(opts);
    }
    _update(opts) {
      super._update(opts);
      if ('mask' in opts) {
        this.exposeMask = undefined;
        // mask could be totally dynamic with only `dispatch` option
        this.compiledMasks = Array.isArray(opts.mask) ? opts.mask.map(m => {
          const {
            expose,
            ...maskOpts
          } = normalizeOpts(m);
          const masked = createMask({
            overwrite: this._overwrite,
            eager: this._eager,
            skipInvalid: this._skipInvalid,
            ...maskOpts
          });
          if (expose) this.exposeMask = masked;
          return masked;
        }) : [];

        // this.currentMask = this.doDispatch(''); // probably not needed but lets see
      }
    }

    _appendCharRaw(ch, flags) {
      if (flags === void 0) {
        flags = {};
      }
      const details = this._applyDispatch(ch, flags);
      if (this.currentMask) {
        details.aggregate(this.currentMask._appendChar(ch, this.currentMaskFlags(flags)));
      }
      return details;
    }
    _applyDispatch(appended, flags, tail) {
      if (appended === void 0) {
        appended = '';
      }
      if (flags === void 0) {
        flags = {};
      }
      if (tail === void 0) {
        tail = '';
      }
      const prevValueBeforeTail = flags.tail && flags._beforeTailState != null ? flags._beforeTailState._value : this.value;
      const inputValue = this.rawInputValue;
      const insertValue = flags.tail && flags._beforeTailState != null ? flags._beforeTailState._rawInputValue : inputValue;
      const tailValue = inputValue.slice(insertValue.length);
      const prevMask = this.currentMask;
      const details = new ChangeDetails();
      const prevMaskState = prevMask == null ? void 0 : prevMask.state;

      // clone flags to prevent overwriting `_beforeTailState`
      this.currentMask = this.doDispatch(appended, {
        ...flags
      }, tail);

      // restore state after dispatch
      if (this.currentMask) {
        if (this.currentMask !== prevMask) {
          // if mask changed reapply input
          this.currentMask.reset();
          if (insertValue) {
            const d = this.currentMask.append(insertValue, {
              raw: true
            });
            details.tailShift = d.inserted.length - prevValueBeforeTail.length;
          }
          if (tailValue) {
            details.tailShift += this.currentMask.append(tailValue, {
              raw: true,
              tail: true
            }).tailShift;
          }
        } else if (prevMaskState) {
          // Dispatch can do something bad with state, so
          // restore prev mask state
          this.currentMask.state = prevMaskState;
        }
      }
      return details;
    }
    _appendPlaceholder() {
      const details = this._applyDispatch();
      if (this.currentMask) {
        details.aggregate(this.currentMask._appendPlaceholder());
      }
      return details;
    }
    _appendEager() {
      const details = this._applyDispatch();
      if (this.currentMask) {
        details.aggregate(this.currentMask._appendEager());
      }
      return details;
    }
    appendTail(tail) {
      const details = new ChangeDetails();
      if (tail) details.aggregate(this._applyDispatch('', {}, tail));
      return details.aggregate(this.currentMask ? this.currentMask.appendTail(tail) : super.appendTail(tail));
    }
    currentMaskFlags(flags) {
      var _flags$_beforeTailSta, _flags$_beforeTailSta2;
      return {
        ...flags,
        _beforeTailState: ((_flags$_beforeTailSta = flags._beforeTailState) == null ? void 0 : _flags$_beforeTailSta.currentMaskRef) === this.currentMask && ((_flags$_beforeTailSta2 = flags._beforeTailState) == null ? void 0 : _flags$_beforeTailSta2.currentMask) || flags._beforeTailState
      };
    }
    doDispatch(appended, flags, tail) {
      if (flags === void 0) {
        flags = {};
      }
      if (tail === void 0) {
        tail = '';
      }
      return this.dispatch(appended, this, flags, tail);
    }
    doValidate(flags) {
      return super.doValidate(flags) && (!this.currentMask || this.currentMask.doValidate(this.currentMaskFlags(flags)));
    }
    doPrepare(str, flags) {
      if (flags === void 0) {
        flags = {};
      }
      let [s, details] = super.doPrepare(str, flags);
      if (this.currentMask) {
        let currentDetails;
        [s, currentDetails] = super.doPrepare(s, this.currentMaskFlags(flags));
        details = details.aggregate(currentDetails);
      }
      return [s, details];
    }
    doPrepareChar(str, flags) {
      if (flags === void 0) {
        flags = {};
      }
      let [s, details] = super.doPrepareChar(str, flags);
      if (this.currentMask) {
        let currentDetails;
        [s, currentDetails] = super.doPrepareChar(s, this.currentMaskFlags(flags));
        details = details.aggregate(currentDetails);
      }
      return [s, details];
    }
    reset() {
      var _this$currentMask;
      (_this$currentMask = this.currentMask) == null ? void 0 : _this$currentMask.reset();
      this.compiledMasks.forEach(m => m.reset());
    }
    get value() {
      return this.exposeMask ? this.exposeMask.value : this.currentMask ? this.currentMask.value : '';
    }
    set value(value) {
      if (this.exposeMask) {
        this.exposeMask.value = value;
        this.currentMask = this.exposeMask;
        this._applyDispatch();
      } else super.value = value;
    }
    get unmaskedValue() {
      return this.exposeMask ? this.exposeMask.unmaskedValue : this.currentMask ? this.currentMask.unmaskedValue : '';
    }
    set unmaskedValue(unmaskedValue) {
      if (this.exposeMask) {
        this.exposeMask.unmaskedValue = unmaskedValue;
        this.currentMask = this.exposeMask;
        this._applyDispatch();
      } else super.unmaskedValue = unmaskedValue;
    }
    get typedValue() {
      return this.exposeMask ? this.exposeMask.typedValue : this.currentMask ? this.currentMask.typedValue : '';
    }
    set typedValue(typedValue) {
      if (this.exposeMask) {
        this.exposeMask.typedValue = typedValue;
        this.currentMask = this.exposeMask;
        this._applyDispatch();
        return;
      }
      let unmaskedValue = String(typedValue);

      // double check it
      if (this.currentMask) {
        this.currentMask.typedValue = typedValue;
        unmaskedValue = this.currentMask.unmaskedValue;
      }
      this.unmaskedValue = unmaskedValue;
    }
    get displayValue() {
      return this.currentMask ? this.currentMask.displayValue : '';
    }
    get isComplete() {
      var _this$currentMask2;
      return Boolean((_this$currentMask2 = this.currentMask) == null ? void 0 : _this$currentMask2.isComplete);
    }
    get isFilled() {
      var _this$currentMask3;
      return Boolean((_this$currentMask3 = this.currentMask) == null ? void 0 : _this$currentMask3.isFilled);
    }
    remove(fromPos, toPos) {
      const details = new ChangeDetails();
      if (this.currentMask) {
        details.aggregate(this.currentMask.remove(fromPos, toPos))
        // update with dispatch
        .aggregate(this._applyDispatch());
      }
      return details;
    }
    get state() {
      var _this$currentMask4;
      return {
        ...super.state,
        _rawInputValue: this.rawInputValue,
        compiledMasks: this.compiledMasks.map(m => m.state),
        currentMaskRef: this.currentMask,
        currentMask: (_this$currentMask4 = this.currentMask) == null ? void 0 : _this$currentMask4.state
      };
    }
    set state(state) {
      const {
        compiledMasks,
        currentMaskRef,
        currentMask,
        ...maskedState
      } = state;
      if (compiledMasks) this.compiledMasks.forEach((m, mi) => m.state = compiledMasks[mi]);
      if (currentMaskRef != null) {
        this.currentMask = currentMaskRef;
        this.currentMask.state = currentMask;
      }
      super.state = maskedState;
    }
    extractInput(fromPos, toPos, flags) {
      return this.currentMask ? this.currentMask.extractInput(fromPos, toPos, flags) : '';
    }
    extractTail(fromPos, toPos) {
      return this.currentMask ? this.currentMask.extractTail(fromPos, toPos) : super.extractTail(fromPos, toPos);
    }
    doCommit() {
      if (this.currentMask) this.currentMask.doCommit();
      super.doCommit();
    }
    nearestInputPos(cursorPos, direction) {
      return this.currentMask ? this.currentMask.nearestInputPos(cursorPos, direction) : super.nearestInputPos(cursorPos, direction);
    }
    get overwrite() {
      return this.currentMask ? this.currentMask.overwrite : this._overwrite;
    }
    set overwrite(overwrite) {
      this._overwrite = overwrite;
    }
    get eager() {
      return this.currentMask ? this.currentMask.eager : this._eager;
    }
    set eager(eager) {
      this._eager = eager;
    }
    get skipInvalid() {
      return this.currentMask ? this.currentMask.skipInvalid : this._skipInvalid;
    }
    set skipInvalid(skipInvalid) {
      this._skipInvalid = skipInvalid;
    }
    maskEquals(mask) {
      return Array.isArray(mask) ? this.compiledMasks.every((m, mi) => {
        if (!mask[mi]) return;
        const {
          mask: oldMask,
          ...restOpts
        } = mask[mi];
        return objectIncludes(m, restOpts) && m.maskEquals(oldMask);
      }) : super.maskEquals(mask);
    }
    typedValueEquals(value) {
      var _this$currentMask5;
      return Boolean((_this$currentMask5 = this.currentMask) == null ? void 0 : _this$currentMask5.typedValueEquals(value));
    }
  }
  MaskedDynamic.DEFAULTS = void 0;
  MaskedDynamic.DEFAULTS = {
    dispatch: (appended, masked, flags, tail) => {
      if (!masked.compiledMasks.length) return;
      const inputValue = masked.rawInputValue;

      // simulate input
      const inputs = masked.compiledMasks.map((m, index) => {
        const isCurrent = masked.currentMask === m;
        const startInputPos = isCurrent ? m.displayValue.length : m.nearestInputPos(m.displayValue.length, DIRECTION.FORCE_LEFT);
        if (m.rawInputValue !== inputValue) {
          m.reset();
          m.append(inputValue, {
            raw: true
          });
        } else if (!isCurrent) {
          m.remove(startInputPos);
        }
        m.append(appended, masked.currentMaskFlags(flags));
        m.appendTail(tail);
        return {
          index,
          weight: m.rawInputValue.length,
          totalInputPositions: m.totalInputPositions(0, Math.max(startInputPos, m.nearestInputPos(m.displayValue.length, DIRECTION.FORCE_LEFT)))
        };
      });

      // pop masks with longer values first
      inputs.sort((i1, i2) => i2.weight - i1.weight || i2.totalInputPositions - i1.totalInputPositions);
      return masked.compiledMasks[inputs[0].index];
    }
  };
  IMask.MaskedDynamic = MaskedDynamic;

  /** Pattern which validates enum values */
  class MaskedEnum extends MaskedPattern {
    constructor(opts) {
      super(opts); // mask will be created in _update
    }

    updateOptions(opts) {
      super.updateOptions(opts);
    }
    _update(opts) {
      const {
        enum: _enum,
        ...eopts
      } = opts;
      if (_enum) {
        const lengths = _enum.map(e => e.length);
        const requiredLength = Math.min(...lengths);
        const optionalLength = Math.max(...lengths) - requiredLength;
        eopts.mask = '*'.repeat(requiredLength);
        if (optionalLength) eopts.mask += '[' + '*'.repeat(optionalLength) + ']';
        this.enum = _enum;
      }
      super._update(eopts);
    }
    doValidate(flags) {
      return this.enum.some(e => e.indexOf(this.unmaskedValue) === 0) && super.doValidate(flags);
    }
  }
  IMask.MaskedEnum = MaskedEnum;

  /** Masking by custom Function */
  class MaskedFunction extends Masked {
    /** */

    /** Enable characters overwriting */

    /** */

    /** */

    updateOptions(opts) {
      super.updateOptions(opts);
    }
    _update(opts) {
      super._update({
        ...opts,
        validate: opts.mask
      });
    }
  }
  IMask.MaskedFunction = MaskedFunction;

  /** Number mask */
  class MaskedNumber extends Masked {
    /** Single char */

    /** Single char */

    /** Array of single chars */

    /** */

    /** */

    /** Digits after point */

    /** Flag to remove leading and trailing zeros in the end of editing */

    /** Flag to pad trailing zeros after point in the end of editing */

    /** Enable characters overwriting */

    /** */

    /** */

    /** Format typed value to string */

    /** Parse string to get typed value */

    constructor(opts) {
      super({
        ...MaskedNumber.DEFAULTS,
        ...opts
      });
    }
    updateOptions(opts) {
      super.updateOptions(opts);
    }
    _update(opts) {
      super._update(opts);
      this._updateRegExps();
    }
    _updateRegExps() {
      const start = '^' + (this.allowNegative ? '[+|\\-]?' : '');
      const mid = '\\d*';
      const end = (this.scale ? "(" + escapeRegExp(this.radix) + "\\d{0," + this.scale + "})?" : '') + '$';
      this._numberRegExp = new RegExp(start + mid + end);
      this._mapToRadixRegExp = new RegExp("[" + this.mapToRadix.map(escapeRegExp).join('') + "]", 'g');
      this._thousandsSeparatorRegExp = new RegExp(escapeRegExp(this.thousandsSeparator), 'g');
    }
    _removeThousandsSeparators(value) {
      return value.replace(this._thousandsSeparatorRegExp, '');
    }
    _insertThousandsSeparators(value) {
      // https://stackoverflow.com/questions/2901102/how-to-print-a-number-with-commas-as-thousands-separators-in-javascript
      const parts = value.split(this.radix);
      parts[0] = parts[0].replace(/\B(?=(\d{3})+(?!\d))/g, this.thousandsSeparator);
      return parts.join(this.radix);
    }
    doPrepareChar(ch, flags) {
      if (flags === void 0) {
        flags = {};
      }
      const [prepCh, details] = super.doPrepareChar(this._removeThousandsSeparators(this.scale && this.mapToRadix.length && (
      /*
        radix should be mapped when
        1) input is done from keyboard = flags.input && flags.raw
        2) unmasked value is set = !flags.input && !flags.raw
        and should not be mapped when
        1) value is set = flags.input && !flags.raw
        2) raw value is set = !flags.input && flags.raw
      */
      flags.input && flags.raw || !flags.input && !flags.raw) ? ch.replace(this._mapToRadixRegExp, this.radix) : ch), flags);
      if (ch && !prepCh) details.skip = true;
      if (prepCh && !this.allowPositive && !this.value && prepCh !== '-') details.aggregate(this._appendChar('-'));
      return [prepCh, details];
    }
    _separatorsCount(to, extendOnSeparators) {
      if (extendOnSeparators === void 0) {
        extendOnSeparators = false;
      }
      let count = 0;
      for (let pos = 0; pos < to; ++pos) {
        if (this._value.indexOf(this.thousandsSeparator, pos) === pos) {
          ++count;
          if (extendOnSeparators) to += this.thousandsSeparator.length;
        }
      }
      return count;
    }
    _separatorsCountFromSlice(slice) {
      if (slice === void 0) {
        slice = this._value;
      }
      return this._separatorsCount(this._removeThousandsSeparators(slice).length, true);
    }
    extractInput(fromPos, toPos, flags) {
      if (fromPos === void 0) {
        fromPos = 0;
      }
      if (toPos === void 0) {
        toPos = this.displayValue.length;
      }
      [fromPos, toPos] = this._adjustRangeWithSeparators(fromPos, toPos);
      return this._removeThousandsSeparators(super.extractInput(fromPos, toPos, flags));
    }
    _appendCharRaw(ch, flags) {
      if (flags === void 0) {
        flags = {};
      }
      if (!this.thousandsSeparator) return super._appendCharRaw(ch, flags);
      const prevBeforeTailValue = flags.tail && flags._beforeTailState ? flags._beforeTailState._value : this._value;
      const prevBeforeTailSeparatorsCount = this._separatorsCountFromSlice(prevBeforeTailValue);
      this._value = this._removeThousandsSeparators(this.value);
      const appendDetails = super._appendCharRaw(ch, flags);
      this._value = this._insertThousandsSeparators(this._value);
      const beforeTailValue = flags.tail && flags._beforeTailState ? flags._beforeTailState._value : this._value;
      const beforeTailSeparatorsCount = this._separatorsCountFromSlice(beforeTailValue);
      appendDetails.tailShift += (beforeTailSeparatorsCount - prevBeforeTailSeparatorsCount) * this.thousandsSeparator.length;
      appendDetails.skip = !appendDetails.rawInserted && ch === this.thousandsSeparator;
      return appendDetails;
    }
    _findSeparatorAround(pos) {
      if (this.thousandsSeparator) {
        const searchFrom = pos - this.thousandsSeparator.length + 1;
        const separatorPos = this.value.indexOf(this.thousandsSeparator, searchFrom);
        if (separatorPos <= pos) return separatorPos;
      }
      return -1;
    }
    _adjustRangeWithSeparators(from, to) {
      const separatorAroundFromPos = this._findSeparatorAround(from);
      if (separatorAroundFromPos >= 0) from = separatorAroundFromPos;
      const separatorAroundToPos = this._findSeparatorAround(to);
      if (separatorAroundToPos >= 0) to = separatorAroundToPos + this.thousandsSeparator.length;
      return [from, to];
    }
    remove(fromPos, toPos) {
      if (fromPos === void 0) {
        fromPos = 0;
      }
      if (toPos === void 0) {
        toPos = this.displayValue.length;
      }
      [fromPos, toPos] = this._adjustRangeWithSeparators(fromPos, toPos);
      const valueBeforePos = this.value.slice(0, fromPos);
      const valueAfterPos = this.value.slice(toPos);
      const prevBeforeTailSeparatorsCount = this._separatorsCount(valueBeforePos.length);
      this._value = this._insertThousandsSeparators(this._removeThousandsSeparators(valueBeforePos + valueAfterPos));
      const beforeTailSeparatorsCount = this._separatorsCountFromSlice(valueBeforePos);
      return new ChangeDetails({
        tailShift: (beforeTailSeparatorsCount - prevBeforeTailSeparatorsCount) * this.thousandsSeparator.length
      });
    }
    nearestInputPos(cursorPos, direction) {
      if (!this.thousandsSeparator) return cursorPos;
      switch (direction) {
        case DIRECTION.NONE:
        case DIRECTION.LEFT:
        case DIRECTION.FORCE_LEFT:
          {
            const separatorAtLeftPos = this._findSeparatorAround(cursorPos - 1);
            if (separatorAtLeftPos >= 0) {
              const separatorAtLeftEndPos = separatorAtLeftPos + this.thousandsSeparator.length;
              if (cursorPos < separatorAtLeftEndPos || this.value.length <= separatorAtLeftEndPos || direction === DIRECTION.FORCE_LEFT) {
                return separatorAtLeftPos;
              }
            }
            break;
          }
        case DIRECTION.RIGHT:
        case DIRECTION.FORCE_RIGHT:
          {
            const separatorAtRightPos = this._findSeparatorAround(cursorPos);
            if (separatorAtRightPos >= 0) {
              return separatorAtRightPos + this.thousandsSeparator.length;
            }
          }
      }
      return cursorPos;
    }
    doValidate(flags) {
      // validate as string
      let valid = Boolean(this._removeThousandsSeparators(this.value).match(this._numberRegExp));
      if (valid) {
        // validate as number
        const number = this.number;
        valid = valid && !isNaN(number) && (
        // check min bound for negative values
        this.min == null || this.min >= 0 || this.min <= this.number) && (
        // check max bound for positive values
        this.max == null || this.max <= 0 || this.number <= this.max);
      }
      return valid && super.doValidate(flags);
    }
    doCommit() {
      if (this.value) {
        const number = this.number;
        let validnum = number;

        // check bounds
        if (this.min != null) validnum = Math.max(validnum, this.min);
        if (this.max != null) validnum = Math.min(validnum, this.max);
        if (validnum !== number) this.unmaskedValue = this.format(validnum, this);
        let formatted = this.value;
        if (this.normalizeZeros) formatted = this._normalizeZeros(formatted);
        if (this.padFractionalZeros && this.scale > 0) formatted = this._padFractionalZeros(formatted);
        this._value = formatted;
      }
      super.doCommit();
    }
    _normalizeZeros(value) {
      const parts = this._removeThousandsSeparators(value).split(this.radix);

      // remove leading zeros
      parts[0] = parts[0].replace(/^(\D*)(0*)(\d*)/, (match, sign, zeros, num) => sign + num);
      // add leading zero
      if (value.length && !/\d$/.test(parts[0])) parts[0] = parts[0] + '0';
      if (parts.length > 1) {
        parts[1] = parts[1].replace(/0*$/, ''); // remove trailing zeros
        if (!parts[1].length) parts.length = 1; // remove fractional
      }

      return this._insertThousandsSeparators(parts.join(this.radix));
    }
    _padFractionalZeros(value) {
      if (!value) return value;
      const parts = value.split(this.radix);
      if (parts.length < 2) parts.push('');
      parts[1] = parts[1].padEnd(this.scale, '0');
      return parts.join(this.radix);
    }
    doSkipInvalid(ch, flags, checkTail) {
      if (flags === void 0) {
        flags = {};
      }
      const dropFractional = this.scale === 0 && ch !== this.thousandsSeparator && (ch === this.radix || ch === MaskedNumber.UNMASKED_RADIX || this.mapToRadix.includes(ch));
      return super.doSkipInvalid(ch, flags, checkTail) && !dropFractional;
    }
    get unmaskedValue() {
      return this._removeThousandsSeparators(this._normalizeZeros(this.value)).replace(this.radix, MaskedNumber.UNMASKED_RADIX);
    }
    set unmaskedValue(unmaskedValue) {
      super.unmaskedValue = unmaskedValue;
    }
    get typedValue() {
      return this.parse(this.unmaskedValue, this);
    }
    set typedValue(n) {
      this.rawInputValue = this.format(n, this).replace(MaskedNumber.UNMASKED_RADIX, this.radix);
    }

    /** Parsed Number */
    get number() {
      return this.typedValue;
    }
    set number(number) {
      this.typedValue = number;
    }

    /**
      Is negative allowed
    */
    get allowNegative() {
      return this.min != null && this.min < 0 || this.max != null && this.max < 0;
    }

    /**
      Is positive allowed
    */
    get allowPositive() {
      return this.min != null && this.min > 0 || this.max != null && this.max > 0;
    }
    typedValueEquals(value) {
      // handle  0 -> '' case (typed = 0 even if value = '')
      // for details see https://github.com/uNmAnNeR/imaskjs/issues/134
      return (super.typedValueEquals(value) || MaskedNumber.EMPTY_VALUES.includes(value) && MaskedNumber.EMPTY_VALUES.includes(this.typedValue)) && !(value === 0 && this.value === '');
    }
  }
  MaskedNumber.UNMASKED_RADIX = '.';
  MaskedNumber.EMPTY_VALUES = [...Masked.EMPTY_VALUES, 0];
  MaskedNumber.DEFAULTS = {
    mask: Number,
    radix: ',',
    thousandsSeparator: '',
    mapToRadix: [MaskedNumber.UNMASKED_RADIX],
    min: Number.MIN_SAFE_INTEGER,
    max: Number.MAX_SAFE_INTEGER,
    scale: 2,
    normalizeZeros: true,
    padFractionalZeros: false,
    parse: Number,
    format: n => n.toLocaleString('en-US', {
      useGrouping: false,
      maximumFractionDigits: 20
    })
  };
  IMask.MaskedNumber = MaskedNumber;

  /** Mask pipe source and destination types */
  const PIPE_TYPE = {
    MASKED: 'value',
    UNMASKED: 'unmaskedValue',
    TYPED: 'typedValue'
  };
  /** Creates new pipe function depending on mask type, source and destination options */
  function createPipe(arg, from, to) {
    if (from === void 0) {
      from = PIPE_TYPE.MASKED;
    }
    if (to === void 0) {
      to = PIPE_TYPE.MASKED;
    }
    const masked = createMask(arg);
    return value => masked.runIsolated(m => {
      m[from] = value;
      return m[to];
    });
  }

  /** Pipes value through mask depending on mask type, source and destination options */
  function pipe(value, mask, from, to) {
    return createPipe(mask, from, to)(value);
  }
  IMask.PIPE_TYPE = PIPE_TYPE;
  IMask.createPipe = createPipe;
  IMask.pipe = pipe;

  try {
    globalThis.IMask = IMask;
  } catch {}

  exports.ChangeDetails = ChangeDetails;
  exports.ChunksTailDetails = ChunksTailDetails;
  exports.DIRECTION = DIRECTION;
  exports.HTMLContenteditableMaskElement = HTMLContenteditableMaskElement;
  exports.HTMLInputMaskElement = HTMLInputMaskElement;
  exports.HTMLMaskElement = HTMLMaskElement;
  exports.InputMask = InputMask;
  exports.MaskElement = MaskElement;
  exports.Masked = Masked;
  exports.MaskedDate = MaskedDate;
  exports.MaskedDynamic = MaskedDynamic;
  exports.MaskedEnum = MaskedEnum;
  exports.MaskedFunction = MaskedFunction;
  exports.MaskedNumber = MaskedNumber;
  exports.MaskedPattern = MaskedPattern;
  exports.MaskedRange = MaskedRange;
  exports.MaskedRegExp = MaskedRegExp;
  exports.PIPE_TYPE = PIPE_TYPE;
  exports.PatternFixedDefinition = PatternFixedDefinition;
  exports.PatternInputDefinition = PatternInputDefinition;
  exports.createMask = createMask;
  exports.createPipe = createPipe;
  exports.default = IMask;
  exports.forceDirection = forceDirection;
  exports.normalizeOpts = normalizeOpts;
  exports.pipe = pipe;

  Object.defineProperty(exports, '__esModule', { value: true });

}));
//# sourceMappingURL=imask.js.map