@shopify/react-native-skia/lib/module/values/web/RNSkReadonlyValue.js

High-performance React Native Graphics using Skia

function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }

export class RNSkReadonlyValue {
  constructor(value) {
    _defineProperty(this, "_current", void 0);

    _defineProperty(this, "_listeners", []);

    _defineProperty(this, "__typename__", "RNSkValue");

    this._current = value;
  }

  notifyListeners() {
    this._listeners.forEach(cb => cb(this._current));
  }

  update(nextValue) {
    if (this._current !== nextValue) {
      this._current = nextValue;
      this.notifyListeners();
    }
  }

  get current() {
    return this._current;
  }

  addListener(cb) {
    this._listeners.push(cb);

    return () => {
      this._listeners.splice(this._listeners.indexOf(cb), 1);
    };
  }

  dispose() {
    this._listeners = [];
  }

}
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