30 lines
900 B
JavaScript
30 lines
900 B
JavaScript
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// @ts-nocheck
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import isSymbol from "./isSymbol.js";
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/** Used to match property names within property paths. */
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const reIsDeepProp = /\.|\[(?:[^[\]]*|(["'])(?:(?!\1)[^\\]|\\.)*?\1)\]/;
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const reIsPlainProp = /^\w*$/;
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/**
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* Checks if `value` is a property name and not a property path.
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*
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* @private
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* @param {*} value The value to check.
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* @param {Object} [object] The object to query keys on.
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* @returns {boolean} Returns `true` if `value` is a property name, else `false`.
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*/
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function isKey(value, object) {
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if (Array.isArray(value)) {
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return false;
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}
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const type = typeof value;
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if (type === "number" ||
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type === "boolean" ||
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value == null ||
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isSymbol(value)) {
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return true;
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}
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return (reIsPlainProp.test(value) ||
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!reIsDeepProp.test(value) ||
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(object != null && value in Object(object)));
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}
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export default isKey;
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