62 lines
1.3 KiB
JavaScript
62 lines
1.3 KiB
JavaScript
|
/**
|
||
|
|
* @license Apache-2.0
|
||
|
|
*
|
||
|
|
* Copyright (c) 2018 The Stdlib Authors.
|
||
|
|
*
|
||
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
||
|
|
* you may not use this file except in compliance with the License.
|
||
|
|
* You may obtain a copy of the License at
|
||
|
|
*
|
||
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
||
|
|
*
|
||
|
|
* Unless required by applicable law or agreed to in writing, software
|
||
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
||
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||
|
|
* See the License for the specific language governing permissions and
|
||
|
|
* limitations under the License.
|
||
|
|
*/
|
||
|
|
|
||
|
|
'use strict';
|
||
|
|
|
||
|
|
// MODULES //
|
||
|
|
|
||
|
|
var defineProperty = require( './../../define-property' );
|
||
|
|
|
||
|
|
|
||
|
|
// MAIN //
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Defines a read-only accessor.
|
||
|
|
*
|
||
|
|
* @param {Object} obj - object on which to define the property
|
||
|
|
* @param {(string|symbol)} prop - property name
|
||
|
|
* @param {Function} getter - accessor
|
||
|
|
*
|
||
|
|
* @example
|
||
|
|
* function getter() {
|
||
|
|
* return 'bar';
|
||
|
|
* }
|
||
|
|
*
|
||
|
|
* var obj = {};
|
||
|
|
*
|
||
|
|
* setReadOnlyAccessor( obj, 'foo', getter );
|
||
|
|
*
|
||
|
|
* try {
|
||
|
|
* obj.foo = 'boop';
|
||
|
|
* } catch ( err ) {
|
||
|
|
* console.error( err.message );
|
||
|
|
* }
|
||
|
|
*/
|
||
|
|
function setReadOnlyAccessor( obj, prop, getter ) {
|
||
|
|
defineProperty( obj, prop, {
|
||
|
|
'configurable': false,
|
||
|
|
'enumerable': true,
|
||
|
|
'get': getter
|
||
|
|
});
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
// EXPORTS //
|
||
|
|
|
||
|
|
module.exports = setReadOnlyAccessor;
|