https://frankl.in/code/json-cli-parser-with-syntax-coloring

parsejson.js

#!/usr/bin/env node

/*
USAGE: cat file.json | parsejson [OPTION] [PROPERTY]

Name:         parsejson
Description:  Parse JSON text to human-readable tree with syntax coloring.
Source:       https://frankl.in/code/json-cli-parser-with-syntax-coloring
Author:       Franklin (https://github.com/fvdm)
License:      Unlicense / Public Domain
*/

var arg = process.argv.slice (2);
var color = true;

if (arg [0] === '-boring') {
  arg = arg.slice (1);
  color = false;
} else if (arg [0] === '-help') {
    console.log ('USAGE:  cat file.json | parsejson [OPTION] [PROPERTY]\n');
    console.log ('        -help     This information');
    console.log ('        -boring   Do not colorize the JSON output');
    console.log ('        property  Only return this path from the tree.\n');
    console.log ('Example:\n');
    console.log ('        echo \'{"dog":{"name":"Shadow"}}\' | parsejson dog name');
    console.log ('        -> \'Shadow\'\n');
    process.exit ();
}

process.stdin.resume ();
process.stdin.setEncoding ('utf8');

process.stdin.on ('data', function (ch) {
  var json = {};
  var i;

  try {
    json = JSON.parse (ch);

    if (arg.length) {
      for (i = 0; i < arg.length; i++) {
        json = json [arg [i]];
      }
    }

    console.dir (json, { depth: null, colors: true });
  } catch (e) {
    console.log (e);
  }
});