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dewedev/node_modules/core-js/modules/es.function.has-instance.js
dwindown 7f2dd5260f Initial commit: Developer Tools MVP with visual editor
- Complete React app with 7 developer tools
- JSON Tool with visual structured editor
- Serialize Tool with visual structured editor
- URL, Base64, CSV/JSON, Beautifier, Diff tools
- Responsive navigation with dropdown menu
- Dark/light mode toggle
- Mobile-responsive design with sticky header
- All tools working with copy/paste functionality
2025-08-02 09:31:26 +07:00

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JavaScript

'use strict';
var isCallable = require('../internals/is-callable');
var isObject = require('../internals/is-object');
var definePropertyModule = require('../internals/object-define-property');
var isPrototypeOf = require('../internals/object-is-prototype-of');
var wellKnownSymbol = require('../internals/well-known-symbol');
var makeBuiltIn = require('../internals/make-built-in');
var HAS_INSTANCE = wellKnownSymbol('hasInstance');
var FunctionPrototype = Function.prototype;
// `Function.prototype[@@hasInstance]` method
// https://tc39.es/ecma262/#sec-function.prototype-@@hasinstance
if (!(HAS_INSTANCE in FunctionPrototype)) {
definePropertyModule.f(FunctionPrototype, HAS_INSTANCE, { value: makeBuiltIn(function (O) {
if (!isCallable(this) || !isObject(O)) return false;
var P = this.prototype;
return isObject(P) ? isPrototypeOf(P, O) : O instanceof this;
}, HAS_INSTANCE) });
}