diff options
Diffstat (limited to 'node_modules/core-js/modules/es.function.has-instance.js')
| -rw-r--r-- | node_modules/core-js/modules/es.function.has-instance.js | 20 |
1 files changed, 0 insertions, 20 deletions
diff --git a/node_modules/core-js/modules/es.function.has-instance.js b/node_modules/core-js/modules/es.function.has-instance.js deleted file mode 100644 index 01383bd..0000000 --- a/node_modules/core-js/modules/es.function.has-instance.js +++ /dev/null @@ -1,20 +0,0 @@ -'use strict'; -var isObject = require('../internals/is-object'); -var definePropertyModule = require('../internals/object-define-property'); -var getPrototypeOf = require('../internals/object-get-prototype-of'); -var wellKnownSymbol = require('../internals/well-known-symbol'); - -var HAS_INSTANCE = wellKnownSymbol('hasInstance'); -var FunctionPrototype = Function.prototype; - -// `Function.prototype[@@hasInstance]` method -// https://tc39.github.io/ecma262/#sec-function.prototype-@@hasinstance -if (!(HAS_INSTANCE in FunctionPrototype)) { - definePropertyModule.f(FunctionPrototype, HAS_INSTANCE, { value: function (O) { - if (typeof this != 'function' || !isObject(O)) return false; - if (!isObject(this.prototype)) return O instanceof this; - // for environment w/o native `@@hasInstance` logic enough `instanceof`, but add this: - while (O = getPrototypeOf(O)) if (this.prototype === O) return true; - return false; - } }); -} |
