NAME

       uglifyjs - JavaScript parser, mangler/compressor and beautifier toolkit

DESCRIPTION

       uglifyjs  input1.js  [input2.js  ...]  [options]  Use a single dash to read input from the
       standard input.

       NOTE: by default there is no mangling/compression.  Without [options] it will simply parse
       input  files  and  dump  the  AST  with  whitespace  and  comments  discarded.  To achieve
       compression and mangling you need to use `-c` and `-m`.

OPTIONS

       --help Show help                              [boolean]

       --source-map
              Specify    an     output     file     where     to     generate     source     map.
              [string]

       --source-map-root
              The   path   to   the   original   source   to  be  included  in  the  source  map.
              [string]

       --source-map-url
              The path to the source map to be added in //#  sourceMappingURL.  Defaults  to  the
              value passed with --source-map.                      [string]

       --source-map-inline
              Write  base64-encoded  source  map  to  the  end  of js output. Disabled by default
              [boolean]

       --source-map-include-sources
              Pass this flag if you want to include the content of source files in the source map
              as sourcesContent property.               [boolean]

       --in-source-map
              Input  source  map,  useful  if  you're compressing JS that was generated from some
              other original code.

       --screw-ie8
              Do  not  support  Internet  Explorer  6/7/8.  This  flag  is  enabled  by  default.
              [boolean]

       --support-ie8
              Support       non-standard       Internet      Explorer      6/7/8      javascript.
              [boolean]

       --expr Parse  a  single  expression,  rather   than   a   program   (for   parsing   JSON)
              [boolean]

       -p, --prefix
              Skip  prefix  for  original  filenames that appear in source maps. For example -p 3
              will drop 3 directories from file names and ensure they are relative paths. You can
              also  specify  -p relative, which will make UglifyJS figure out itself the relative
              paths between original sources, the source map and the output file.

              [string]

       -o, --output
              Output file (default STDOUT).

       -b, --beautify
              Beautify output/specify output options. [string]

       -m, --mangle
              Mangle names/pass mangler options.      [string]

       -r, --reserved
              Reserved names to exclude from mangling.

       -c, --compress
              Enable   compressor/pass    compressor    options.    Pass    options    like    -c
              hoist_vars=false,if_return=false.  Use  -c  with  no  argument  to  use the default
              compression options.

              [string]

       -d, --define
              Global definitions                      [string]

       -e, --enclose
              Embed everything in a big function, with a  configurable  parameter/argument  list.
              [string]

       --comments
              Preserve  copyright  comments  in  the  output.  By  default this works like Google
              Closure, keeping JSDoc-style comments that contain "@license" or  "@preserve".  You
              can  optionally  pass  one of the following arguments to this flag: - "all" to keep
              all comments - a valid JS RegExp  like  `/foo/`or  `/^!/`  to  keep  only  matching
              comments.   Note  that currently not *all* comments can be kept when compression is
              on,  because  of  dead  code  removal  or  cascading  statements  into   sequences.
              [string]

       --preamble
              Preamble  to  prepend  to  the  output.  You  can use this to insert a comment, for
              example for licensing information. This will not be parsed, but the source map will
              adjust for its presence.

       --stats
              Display operations run time on STDERR. [boolean]

       --acorn
              Use Acorn for parsing.                 [boolean]

       --spidermonkey
              Assume     input     files    are    SpiderMonkey    AST    format    (as    JSON).
              [boolean]

       --self Build itself  (UglifyJS2)  as  a  library  (implies  --wrap=UglifyJS  --export-all)
              [boolean]

       --wrap Embed  everything  in  a  big  function,  making the ???exports??? and ???global???
              variables available. You need to pass an argument to this  option  to  specify  the
              name   that   your   module   will   take   when   included  in,  say,  a  browser.
              [string]

       --export-all
              Only used when --wrap, this tells UglifyJS to add code to automatically export  all
              globals.

              [boolean]

       --lint Display some scope warnings            [boolean]

       -v, --verbose
              Verbose                                [boolean]

       -V, --version
              Show version number                    [boolean]

       --noerr
              Don't    throw    an    error    for   unknown   options   in   -c,   -b   or   -m.
              [boolean]

       --bare-returns
              Allow  return  outside  of  functions.  Useful  when  minifying  CommonJS  modules.
              [boolean]

       --keep-fnames
              Do    not    mangle/drop    function    names.   Useful   for   code   relying   on
              Function.prototype.name.

              [boolean]

       --reserved-file
              File containing reserved names           [array]

       --reserve-domprops
              Make     (most?)     DOM      properties      reserved      for      --mangle-props
              [boolean]

       --mangle-props
              Mangle property names (0 - disabled, 1 - mangle all properties, 2 - mangle unquoted
              properies)

       --mangle-regex
              Only mangle property names matching the regex

       --name-cache
              File to hold mangled names mappings     [string]

       --pure-funcs
              List of functions that can be safely removed if their  return  value  is  not  used
              [array]

       --dump-spidermonkey-ast
              Dump SpiderMonkey AST to stdout.       [boolean]

       --wrap-iife
              Wrap  IIFEs  in parenthesis. Note: this disables the negate_iife compression option
              [boolean]

       -q, --quotes
              Quote style (0 - auto, 1 - single, 2 - double, 3 - original)