diff options
Diffstat (limited to 'src/node_modules/es-abstract/2020/LengthOfArrayLike.js')
-rw-r--r-- | src/node_modules/es-abstract/2020/LengthOfArrayLike.js | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/src/node_modules/es-abstract/2020/LengthOfArrayLike.js b/src/node_modules/es-abstract/2020/LengthOfArrayLike.js new file mode 100644 index 0000000..870932f --- /dev/null +++ b/src/node_modules/es-abstract/2020/LengthOfArrayLike.js @@ -0,0 +1,20 @@ +'use strict'; + +var GetIntrinsic = require('../GetIntrinsic'); + +var $TypeError = GetIntrinsic('%TypeError%'); + +var Get = require('./Get'); +var ToLength = require('./ToLength'); +var Type = require('./Type'); + +// https://tc39.es/ecma262/2020/#sec-lengthofarraylike + +module.exports = function LengthOfArrayLike(obj) { + if (Type(obj) !== 'Object') { + throw new $TypeError('Assertion failed: `obj` must be an Object'); + } + return ToLength(Get(obj, 'length')); +}; + +// TODO: use this all over |