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Diffstat (limited to 'node_modules/es-abstract/2019/OrdinaryHasInstance.js')
-rw-r--r-- | node_modules/es-abstract/2019/OrdinaryHasInstance.js | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/node_modules/es-abstract/2019/OrdinaryHasInstance.js b/node_modules/es-abstract/2019/OrdinaryHasInstance.js new file mode 100644 index 000000000..51abe26d5 --- /dev/null +++ b/node_modules/es-abstract/2019/OrdinaryHasInstance.js @@ -0,0 +1,25 @@ +'use strict'; + +var GetIntrinsic = require('../GetIntrinsic'); + +var $TypeError = GetIntrinsic('%TypeError%'); + +var Get = require('./Get'); +var IsCallable = require('./IsCallable'); +var Type = require('./Type'); + +// https://www.ecma-international.org/ecma-262/6.0/#sec-ordinaryhasinstance + +module.exports = function OrdinaryHasInstance(C, O) { + if (IsCallable(C) === false) { + return false; + } + if (Type(O) !== 'Object') { + return false; + } + var P = Get(C, 'prototype'); + if (Type(P) !== 'Object') { + throw new $TypeError('OrdinaryHasInstance called on an object with an invalid prototype property.'); + } + return O instanceof C; +}; |