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@feugene/mu

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Helpful TS utilities without dependencies

20 lines 734 B
/** Used as references for various `Number` constants. */ import { reIsUint } from '../core/vars.mjs'; /** * Checks if `value` is a valid array-like index. * * @private * @param {*} value The value to check. * @param {number} [length=MAX_SAFE_INTEGER] The upper bounds of a valid index. * @returns {boolean} Returns `true` if `value` is a valid index, else `false`. */ export default function isIndex(value, length) { const type = typeof value; length = length == null ? Number.MAX_SAFE_INTEGER : length; return (!!length && (type === 'number' || (type !== 'symbol' && reIsUint.test(value))) && value > -1 && value % 1 === 0 && value < length); } //# sourceMappingURL=isIndex.mjs.map