@material-git/all/core/annotations/field-value.js

Angular 2 Material

/**
 * Annotation Factory that allows HTML style boolean attributes. For example,
 * a field declared like this:

 * @Directive({ selector: 'component' }) class MyComponent {
 *   @Input() @BooleanFieldValueFactory() myField: boolean;
 * }
 *
 * You could set it up this way:
 *   <component myField>
 * or:
 *   <component myField="">
 * @deprecated
 */
function booleanFieldValueFactory() {
    return function booleanFieldValueMetadata(target, key) {
        var defaultValue = target[key];
        var localKey = "__md_private_symbol_" + key;
        target[localKey] = defaultValue;
        Object.defineProperty(target, key, {
            get: function () { return this[localKey]; },
            set: function (value) {
                this[localKey] = value != null && "" + value !== 'false';
            }
        });
    };
}
export { booleanFieldValueFactory as BooleanFieldValue };

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