ng-dap/utils/decorators.js

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/*tslint:disable:no-invalid-this */
export function OnChange(defaultValue) {
    var sufix = 'Change';
    return function OnChangeHandler(target, propertyKey) {
        var _key = " __" + propertyKey + "Value";
        Object.defineProperty(target, propertyKey, {
            get: function () {
                return this[_key];
            },
            set: function (value) {
                var prevValue = this[_key];
                this[_key] = value;
                if (prevValue !== value && this[propertyKey + sufix]) {
                    this[propertyKey + sufix].emit(value);
                }
            }
        });
    };
}
/* tslint:enable */
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