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| Direktori : /www/loslex/demo/node_modules/@popperjs/core/lib/utils/ |
| Current File : //www/loslex/demo/node_modules/@popperjs/core/lib/utils/uniqueBy.js.flow |
// @flow
export default function uniqueBy<T>(arr: Array<T>, fn: T => any): Array<T> {
const identifiers = new Set();
return arr.filter(item => {
const identifier = fn(item);
if (!identifiers.has(identifier)) {
identifiers.add(identifier);
return true;
}
});
}