compressor from discarding function names. Useful for code relying on
`Function.prototype.name`. See also: the `keep_fnames` [mangle option](#mangle).
-- `passes` -- default `1`. Number of times to run compress. Use an
- integer argument larger than 1 to further reduce code size in some cases.
- Note: raising the number of passes will increase uglify compress time.
+- `passes` -- default `1`. Number of times to run compress with a maximum of 3.
+ In some cases more than one pass leads to further compressed code. Keep in
+ mind more passes will take more time.
- `keep_infinity` -- default `false`. Pass `true` to prevent `Infinity` from
being compressed into `1/0`, which may cause performance issues on Chrome.