34 lines
1.3 KiB
JavaScript
34 lines
1.3 KiB
JavaScript
import { identity } from "../../function/identity.mjs";
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import { range } from "../../math/range.mjs";
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import { isArrayLike } from "../predicate/isArrayLike.mjs";
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//#region src/compat/array/forEachRight.ts
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/**
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* Iterates over elements of 'array' from right to left and invokes 'callback' for each element.
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*
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* @template T - The type of object.
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* @param object - The object to iterate over.
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* @param [callback] - The function invoked for each property.
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* The callback function receives three arguments:
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* - 'value': The current property being processed in the object.
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* - 'key': The key of the current property being processed in the object.
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* - 'object': The object 'forEachRight' was called upon.
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* @returns Returns the original object.
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*
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* @example
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* forEachRight({'a': 1, 'b': 2 }, (value, key, object) => console.log(value, key));
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* // Output:
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* // 2 'b'
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* // 1 'a'
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*/
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function forEachRight(collection, callback = identity) {
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if (!collection) return collection;
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const keys = isArrayLike(collection) ? range(0, collection.length) : Object.keys(collection);
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for (let i = keys.length - 1; i >= 0; i--) {
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const key = keys[i];
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const value = collection[key];
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if (callback(value, key, collection) === false) break;
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}
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return collection;
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}
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//#endregion
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export { forEachRight };
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