jstdin

0.11.2 • Public • Published

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a better node -p that accepts stdin and can format and highlight output

FYI

jstdin works really well in conjunction with lbl (a line-by-line stdin parser, sort of like AWK, but 100% JS)

Installation

$ npm install jstdin --global

Usage

$ jstdin --help
 
  Usage:
 
    $ jstdin [code] [options]
 
  Description:
 
    executes javascript on the command line like `node -p`
    but also accepts data via stdin so long as [code] is wrapped
    with an anonymous function; it also formats output.
 
  Options:
 
    -r, --raw   prevent formatting output
    -h, --help  show this usage information
 
  Examples:
 
    # eval and print js (like node -p) 
    $ jstdin '2*2'
    4
 
    # use stdin, process and pretty print 
    $ echo '[1,2,3]' | jstdin 'x => x.map(x => x*2)'
    [
      2,
      4,
      6
    ]
 
    # use stdin, process and do not pretty print 
    $ echo '[1,2,3]' | jstdin 'x => x.map(x => x*2)' --raw
    [2,4,6]
 
    # use stdin and just pretty print 
    $ echo '[{"n":1,"a":{"b":"c"}},{"n":2,"a":{"d":{"e":"f"}}}]' | jstdin'
    [
      {
        "n": 1,
        "a": {
          "b": "c"
        }
      },
      {
        "n": 2,
        "a": {
          "d": "e"
        }
      }
    ]

Inspiration:

License

ISC © Buster Collings

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Install

npm i jstdin

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Version

0.11.2

License

ISC

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10.8 kB

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  • buster