diff options
Diffstat (limited to 'src/node_modules/es-abstract/2015/GetOwnPropertyKeys.js')
-rw-r--r-- | src/node_modules/es-abstract/2015/GetOwnPropertyKeys.js | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/src/node_modules/es-abstract/2015/GetOwnPropertyKeys.js b/src/node_modules/es-abstract/2015/GetOwnPropertyKeys.js new file mode 100644 index 0000000..8d7e5ee --- /dev/null +++ b/src/node_modules/es-abstract/2015/GetOwnPropertyKeys.js @@ -0,0 +1,31 @@ +'use strict'; + +var GetIntrinsic = require('../GetIntrinsic'); + +var hasSymbols = require('has-symbols')(); + +var $TypeError = GetIntrinsic('%TypeError%'); + +var $gOPN = GetIntrinsic('%Object.getOwnPropertyNames%'); +var $gOPS = hasSymbols && GetIntrinsic('%Object.getOwnPropertySymbols%'); +var keys = require('object-keys'); + +var esType = require('./Type'); + +// https://www.ecma-international.org/ecma-262/6.0/#sec-getownpropertykeys + +module.exports = function GetOwnPropertyKeys(O, Type) { + if (esType(O) !== 'Object') { + throw new $TypeError('Assertion failed: Type(O) is not Object'); + } + if (Type === 'Symbol') { + return $gOPS ? $gOPS(O) : []; + } + if (Type === 'String') { + if (!$gOPN) { + return keys(O); + } + return $gOPN(O); + } + throw new $TypeError('Assertion failed: `Type` must be `"String"` or `"Symbol"`'); +}; |