Object.assign erroneous TypeError - Githubissues

paulmillr / es6-shim

ECMAScript 6 compatibility shims for legacy JS engines

http://paulmillr.com

MIT License

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Object.assign erroneous TypeError #348

Closed rwaldron closed 9 years ago

rwaldron commented 9 years ago

This was exposed by @yanlxu's tests here: https://github.com/tc39/test262/pull/293/files

Ref: https://github.com/paulmillr/es6-shim/blob/cba1442ccf1f11e4cf23b65ef21d29a46e85baa4/es6-shim.js#L1128

Object.assign must:

Coerce the target to an object, per ToObject
Throw a TypeError exception for cases that cannot be coerced, per ToObject
Apply the same semantics when there is only a target (this is pretty specific to es6-shim, but the patch will make it clear)