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12 lines
382 B
JavaScript
12 lines
382 B
JavaScript
//#region src/compat/_internal/isIndex.ts
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const IS_UNSIGNED_INTEGER = /^(?:0|[1-9]\d*)$/;
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function isIndex(value, length = Number.MAX_SAFE_INTEGER) {
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switch (typeof value) {
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case "number": return Number.isInteger(value) && value >= 0 && value < length;
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case "symbol": return false;
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case "string": return IS_UNSIGNED_INTEGER.test(value);
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}
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}
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//#endregion
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export { isIndex };
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