26 lines
1.2 KiB
JavaScript
26 lines
1.2 KiB
JavaScript
//#region src/compat/predicate/isNative.ts
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const functionToString = Function.prototype.toString;
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/** Used to detect if a method is native. */
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const IS_NATIVE_FUNCTION_REGEXP = RegExp(`^${functionToString.call(Object.prototype.hasOwnProperty).replace(/[\\^$.*+?()[\]{}|]/g, "\\$&").replace(/hasOwnProperty|(function).*?(?=\\\()| for .+?(?=\\\])/g, "$1.*?")}$`);
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/**
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* Checks if a given value is a native function.
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*
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* This function tests whether the provided value is a native function implemented by the JavaScript engine.
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* It returns `true` if the value is a native function, and `false` otherwise.
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*
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* @param value - The value to test for native function.
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* @returns `true` if the value is a native function, `false` otherwise.
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*
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* @example
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* const value1 = Array.prototype.push;
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* const value2 = () => {};
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* const result1 = isNative(value1); // true
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* const result2 = isNative(value2); // false
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*/
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function isNative(value) {
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if (typeof value !== "function") return false;
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if (globalThis?.["__core-js_shared__"] != null) throw new Error("Unsupported core-js use. Try https://npms.io/search?q=ponyfill.");
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return IS_NATIVE_FUNCTION_REGEXP.test(functionToString.call(value));
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}
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//#endregion
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exports.isNative = isNative;
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