Repository URL to install this package:
Version:
1.2.11 ▾
|
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
// import { matchNative } from 'exoticdeps'
const deps_1 = require("../../deps");
const NATIVE_NAMES_LIST_1 = require("./CONSTANTS/NATIVE_NAMES_LIST");
const PROTOTYPE_METHODS_1 = require("./CONSTANTS/PROTOTYPE_METHODS");
/**
* @desc based on isNative from react-fibers, based on isNative() from Lodash
* @since 4.0.6
* @memberOf is
* @func isNative
*
* @param {*} x value to check
* @return {boolean}
*
* {@link https://esdiscuss.org/topic/spec-feedback-on-rev-6#content-2 esdiscuss-functiontostring}
* {@link https://github.com/lodash/lodash/issues/2185 lodash-functiontostring-issue}
* {@link http://tc39.github.io/Function-prototype-toString-revision/ functiontostring-emca}
* {@link https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/toString Function.toString}
*
* @see {@link Function.toString}
* @see {@link functiontostring-emca}
* @see {@link lodash-functiontostring-issue}
* @see {@link esdiscuss-functiontostring}
*
* @example
*
* isNative(Array.prototype.push)
* //=> true
*
* isNative(function normalFunction() {})
* //=> false
*
*/
function isNativeFunction(x) {
try {
const source = PROTOTYPE_METHODS_1.functionToString.call(x);
return deps_1.matchNative.test(source);
}
catch (err) {
return false;
}
}
exports.isNativeFunction = isNativeFunction;
// Native - much faster than try catch function toString regexp matching
// though it would not include ALL **METHODS** (Object Properties)
// eslint-disable-next-line
const isBuiltIn = (x) => NATIVE_NAMES_LIST_1.default.indexOf(x) !== -1 || isNativeFunction(x);
exports.isBuiltIn = isBuiltIn;
const isNative = isBuiltIn;
exports.isNative = isNative;
//# sourceMappingURL=isNative.js.map