@web-atoms/core/dist/view-model/Disposable.js

Web Atoms Core

System.register([], function (_export, _context) {
  "use strict";

  var Disposable;
  return {
    setters: [],
    execute: function () {
      Disposable = (target, key) => {
        const iVal = target[key];
        const keyName = "_" + key;
        const disposableKey = "_$_disposable" + key;
        target[keyName] = iVal;
        if (iVal) {
          target[disposableKey] = target.registerDisposable(iVal);
        }
        const getter = function () {
          return this[keyName];
        };
        const setter = function (newVal) {
          const oldValue = this[keyName];
          if (oldValue == newVal) {
            return;
          }
          const oldDisposable = this[disposableKey];
          if (oldDisposable && oldDisposable.dispose) {
            oldDisposable.dispose();
          }
          this[keyName] = newVal;
        };
        if (delete target[key]) {
          Object.defineProperty(target, key, {
            get: getter,
            set: setter,
            enumerable: true,
            configurable: true
          });
        }
      };
      _export("default", Disposable);
    }
  };
});
//# sourceMappingURL=Disposable.js.map