One thing that should make things simpler is that we should create an
unmapped/strict arguments object in the presences of rest parameters.
Therefore
the alias trouble that you are running into for sloppy functions will go
away.
http://people.mozilla.org/~jorendorff/es6-draft.html#sec-createunmappedargumentsobject
http://people.mozilla.org/~jorendorff/es6-draft.html#sec-function-definitions-static-semantics-issimpleparameterlist
https://codereview.chromium.org/816913003/diff/200001/src/ast.h
File src/ast.h (right):
https://codereview.chromium.org/816913003/diff/200001/src/ast.h#newcode403
src/ast.h:403: void set_ellipsis(int location) {
I don't think this approach is going to work. Once we have default
params and destructuring we really need an AST node here.
https://codereview.chromium.org/816913003/
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