Alex Lam S.L d1f085bce7 add new arrows compress option (#2154) ...

Convert ES5 style anonymous function expressions
to arrow functions if permissible by language semantics.

Note: `arrows` requires that the `ecma` compress option
is set to `6` or greater.

fixes #2150

2017-06-24 14:45:24 +08:00

6.0 KiB

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