type error after compile

[palindrom615]

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• Summary

this is _getEventHandlers method in MaskedInput.tsx:

// MaskedInput.tsx
// ...
  _keyPressPropName() {
    if (typeof navigator !== 'undefined') {
      return navigator.userAgent.match(/Android/i)
        ? 'onBeforeInput'
        : 'onKeyPress';
    }
    return 'onKeyPress';
  }

  _getEventHandlers() {
    return {
      onChange: this._onChange,
      onKeyDown: this._onKeyDown,
      onPaste: this._onPaste,
      [this._keyPressPropName()]: this._onKeyPress
    };
  }
// ...

...And the source is compiled as:

// compiled type signature file
// ...
    _keyPressPropName(): "onBeforeInput" | "onKeyPress";
    _getEventHandlers(): {
        [x: string]: (e: React.ChangeEvent<HTMLInputElement>) => void;
        onChange: (e: React.ChangeEvent<HTMLInputElement>) => void;
        onKeyDown: (e: any) => void;
        onPaste: (e: React.ClipboardEvent<any>) => void;
    };

Though _keyPressPropName is Union type, because of typescript issue that union type cannot be a key of object, _getEventHandlers is compiled with x key which is a string type.

This makes compile error Property 'onPaste' of type '(e: ClipboardEvent<any>) => void' is not assignable to string index type '(e: ChangeEvent<HTMLInputElement>) . this should be fixed by more explicit type declaration on method:

  _getEventHandlers(): {
    onChange: (TChangeEvent) => void;
    onKeyDown: (TChangeEvent) => void;
    onPaste: (TClipboardEvent) => void;
    onBeforeInput?: (TChangeEvent) => void;
    onKeyPress?: (TChangeEvent) => void;
  } {
    return {
      onChange: this._onChange,
      onKeyDown: this._onKeyDown,
      onPaste: this._onPaste,
      [this._keyPressPropName()]: this._onKeyPress
    };
  }

which is compiled liked this:

    _getEventHandlers(): {
        onChange: (TChangeEvent: any) => void;
        onKeyDown: (TChangeEvent: any) => void;
        onPaste: (TClipboardEvent: any) => void;
        onBeforeInput?: (TChangeEvent: any) => void;
        onKeyPress?: (TChangeEvent: any) => void;
    };

• Other information (e.g. detailed explanation, stacktraces, related issues, suggestions how to fix, links for us to have context, eg. StackOverflow, personal fork, etc.)