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npm install <패키지> -g

-g 옵션은 전역적으로 사용할 수 있게 설치한다. 생략시 현 패키지 로컬에 설치된다.

root@leelab:/opt/server_side_javascript# npm install uglify-js -g
/usr/local/bin/uglifyjs -> /usr/local/lib/node_modules/uglify-js/bin/uglifyjs
/usr/local/lib
└─┬ uglify-js@3.5.3
  ├── commander@2.19.0
  └── source-map@0.6.1

root@leelab:/opt/server_side_javascript#
root@leelab:/opt/server_side_javascript# uglifyjs --help
Usage: uglifyjs [options] [files...]

Options:
  -V, --version                            output the version number
  -p, --parse <options>                    Specify parser options.
  -c, --compress [options]                 Enable compressor/specify compressor options.
  -m, --mangle [options]                   Mangle names/specify mangler options.
  --mangle-props [options]                 Mangle properties/specify mangler options.
  -b, --beautify [options]                 Beautify output/specify output options.
  -o, --output <file>                      Output file (default STDOUT).
  --comments [filter]                      Preserve copyright comments in the output.
  --config-file <file>                     Read minify() options from JSON file.
  -d, --define <expr>[=value]              Global definitions.
  -e, --enclose [arg[,...][:value[,...]]]  Embed everything in a big function, with configurable argument(s) & value(s).
  --ie8                                    Support non-standard Internet Explorer 8.
  --keep-fnames                            Do not mangle/drop function names. Useful for code relying on Function.prototype.name.
  --name-cache <file>                      File to hold mangled name mappings.
  --rename                                 Force symbol expansion.
  --no-rename                              Disable symbol expansion.
  --self                                   Build UglifyJS as a library (implies --wrap UglifyJS)
  --source-map [options]                   Enable source map/specify source map options.
  --timings                                Display operations run time on STDERR.
  --toplevel                               Compress and/or mangle variables in toplevel scope.
  --verbose                                Print diagnostic messages.
  --warn                                   Print warning messages.
  --wrap <name>                            Embed everything as a function with “exports” corresponding to “name” globally.
  -h, --help                               output usage information
root@leelab:/opt/server_side_javascript#

root@leelab:/opt/server_side_javascript# vi pretty.js 

function hello(name){
console.log('Hi,'+name);
}
hello('jklee');

root@leelab:/opt/server_side_javascript# uglifyjs pretty.js
function hello(name){console.log("Hi,"+name)}hello("jklee");
root@leelab:/opt/server_side_javascript#

root@leelab:/opt/server_side_javascript# uglifyjs pretty.js -m
function hello(l){console.log("Hi,"+l)}hello("jklee");
root@leelab:/opt/server_side_javascript#
​
root@leelab:/opt/server_side_javascript# uglifyjs pretty.js -m -o uglified.js
root@leelab:/opt/server_side_javascript# cat uglified.js
function hello(l){console.log("Hi,"+l)}hello("jklee");

root@leelab:/opt/server_side_javascript#

root@leelab:/opt/server_side_javascript# uglifyjs pretty.js -m -o pretty.min.js
root@leelab:/opt/server_side_javascript#