var fails = require('../internals/fails');
|
var isCallable = require('../internals/is-callable');
|
var hasOwn = require('../internals/has-own-property');
|
var DESCRIPTORS = require('../internals/descriptors');
|
var CONFIGURABLE_FUNCTION_NAME = require('../internals/function-name').CONFIGURABLE;
|
var inspectSource = require('../internals/inspect-source');
|
var InternalStateModule = require('../internals/internal-state');
|
|
var enforceInternalState = InternalStateModule.enforce;
|
var getInternalState = InternalStateModule.get;
|
// eslint-disable-next-line es/no-object-defineproperty -- safe
|
var defineProperty = Object.defineProperty;
|
|
var CONFIGURABLE_LENGTH = DESCRIPTORS && !fails(function () {
|
return defineProperty(function () { /* empty */ }, 'length', { value: 8 }).length !== 8;
|
});
|
|
var TEMPLATE = String(String).split('String');
|
|
var makeBuiltIn = module.exports = function (value, name, options) {
|
if (String(name).slice(0, 7) === 'Symbol(') {
|
name = '[' + String(name).replace(/^Symbol\(([^)]*)\)/, '$1') + ']';
|
}
|
if (options && options.getter) name = 'get ' + name;
|
if (options && options.setter) name = 'set ' + name;
|
if (!hasOwn(value, 'name') || (CONFIGURABLE_FUNCTION_NAME && value.name !== name)) {
|
if (DESCRIPTORS) defineProperty(value, 'name', { value: name, configurable: true });
|
else value.name = name;
|
}
|
if (CONFIGURABLE_LENGTH && options && hasOwn(options, 'arity') && value.length !== options.arity) {
|
defineProperty(value, 'length', { value: options.arity });
|
}
|
try {
|
if (options && hasOwn(options, 'constructor') && options.constructor) {
|
if (DESCRIPTORS) defineProperty(value, 'prototype', { writable: false });
|
// in V8 ~ Chrome 53, prototypes of some methods, like `Array.prototype.values`, are non-writable
|
} else if (value.prototype) value.prototype = undefined;
|
} catch (error) { /* empty */ }
|
var state = enforceInternalState(value);
|
if (!hasOwn(state, 'source')) {
|
state.source = TEMPLATE.join(typeof name == 'string' ? name : '');
|
} return value;
|
};
|
|
// add fake Function#toString for correct work wrapped methods / constructors with methods like LoDash isNative
|
// eslint-disable-next-line no-extend-native -- required
|
Function.prototype.toString = makeBuiltIn(function toString() {
|
return isCallable(this) && getInternalState(this).source || inspectSource(this);
|
}, 'toString');
|
