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es-toolkit

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A state-of-the-art, high-performance JavaScript utility library with a small bundle size and strong type annotations.

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import { dropWhile as dropWhile$1 } from "../../array/dropWhile.mjs"; import { identity } from "../../function/identity.mjs"; import { toArray } from "../_internal/toArray.mjs"; import { isArrayLike } from "../predicate/isArrayLike.mjs"; import { property } from "../object/property.mjs"; import { matches } from "../predicate/matches.mjs"; import { matchesProperty } from "../predicate/matchesProperty.mjs"; //#region src/compat/array/dropWhile.ts /** * Creates a slice of array excluding elements dropped from the beginning. * Elements are dropped until predicate returns falsey. * The predicate is invoked with three arguments: (value, index, array). * * @template T - The type of elements in the array * @param array - The array to query * @param [predicate=identity] - The function invoked per iteration * @returns Returns the slice of array * * @example * dropWhile([1, 2, 3], n => n < 3) * // => [3] * * dropWhile([{ a: 1, b: 2 }, { a: 1, b: 3 }], { a: 1 }) * // => [] * * dropWhile([{ a: 1, b: 2 }, { a: 1, b: 3 }], ['a', 1]) * // => [] * * dropWhile([{ a: 1, b: 2 }, { a: 1, b: 3 }], 'a') * // => [] */ function dropWhile(array, predicate = identity) { if (!isArrayLike(array)) return []; return dropWhileImpl(toArray(array), predicate); } function dropWhileImpl(arr, predicate) { switch (typeof predicate) { case "function": return dropWhile$1(arr, (item, index, arr) => Boolean(predicate(item, index, arr))); case "object": if (Array.isArray(predicate) && predicate.length === 2) { const key = predicate[0]; const value = predicate[1]; return dropWhile$1(arr, matchesProperty(key, value)); } else return dropWhile$1(arr, matches(predicate)); case "number": case "symbol": case "string": return dropWhile$1(arr, property(predicate)); } } //#endregion export { dropWhile };