Alex Lam S.L 5d9f1da3ab support safe reassignments in reduce_vars (#1823) ...

`var a=1;a=2;x(a)` => `x(2)`

fix pre-existing issues
- reference counting on assignment
- walking of anonymous functions
- chained assignment

2017-04-18 13:38:42 +08:00

175 KiB

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