79 lines
1.8 KiB
JavaScript
79 lines
1.8 KiB
JavaScript
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/**
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* @license Apache-2.0
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*
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* Copyright (c) 2018 The Stdlib Authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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'use strict';
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/**
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* Invert an object, such that keys become values and values become keys, according to a transform function.
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*
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* @module @stdlib/utils/object-inverse-by
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*
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* @example
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* var invertBy = require( '@stdlib/utils/object-inverse-by' );
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*
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* function transform( key, value ) {
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* return key + value;
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* }
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* var obj = {
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* 'a': 'beep',
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* 'b': 'boop'
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* };
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* var out = invertBy( obj, transform );
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* // returns { 'abeep': 'a', 'bboop': 'b' }
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*
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* @example
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* var invertBy = require( '@stdlib/utils/object-inverse-by' );
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*
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* function transform( key, value ) {
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* return value;
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* }
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* var obj = {
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* 'a': 'beep',
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* 'b': 'beep'
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* };
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* var out = invertBy( obj, transform );
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* // returns { 'beep': [ 'a', 'b' ] }
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*
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* @example
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* var invertBy = require( '@stdlib/utils/object-inverse-by' );
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*
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* function transform( key, value ) {
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* return value;
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* }
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*
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* var obj = {};
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* obj.a = 'beep';
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* obj.b = 'boop';
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* obj.c = 'beep'; // inserted after `a`
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*
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* var opts = {
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* 'duplicates': false
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* };
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* var out = invertBy( obj, opts, transform );
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* // returns { 'beep': 'c', 'boop': 'b' }
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*/
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// MODULES //
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var invertBy = require( './object_inverse_by.js' );
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// EXPORTS //
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module.exports = invertBy;
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