Forked from marcelabomfim/removeDuplicatesByProp.js
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November 28, 2019 19:34
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| /* | |
| * Returns a new array without items whose property received is duplicated. | |
| * | |
| * @example | |
| * removeDuplicatesByProp([ | |
| * {id: 1, name: 'apple'}, | |
| * {id: 2, name: 'apple'}, | |
| * {id: 3, name: 'orange'} | |
| * ], 'name'); | |
| * //=> [{id: 1, name: 'apple'}, {id: 3, name: 'orange'}] | |
| * | |
| * @param {T[]} objects - An array of objects. | |
| * @param {keyof T} prop - A property used for comparison. | |
| * @returns {T[]} | |
| * @template T | |
| */ | |
| const removeDuplicatesByProp = (objects, property) => { | |
| const values = new Set(); | |
| return objects.filter(object => { | |
| const value = object[property]; | |
| if (values.has(value)) | |
| return false; | |
| values.add(value); | |
| return true; | |
| }); | |
| }; | |
| export default removeDuplicatesByProp; |
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