json-colorizer

A library for colorizing JSON strings

This package is a simple console syntax highlighter for JSON.

Installation

npm install --save json-colorizer

Usage

const colorize = require('json-colorizer');
console.log(colorize({ foo: 'bar' }));

If you pass a string to the colorize function, it will treat it as pre-serialized JSON. This can be used in order to colorize pretty-printed JSON:

const colorize = require('json-colorizer');
const json = JSON.stringify({ foo: 'bar' }, null, 2);
console.log(colorize(json));

Pretty-printing output

To pretty-print the resulting JSON, pass the pretty: true option to the options object:

const colorize = require('json-colorizer');
const json = '{"foo": "bar"}';
console.log(colorize(json, { pretty: true }));

Specifying colors

You can specify a color to use for coloring individual tokens by providing a colors object in the options object. This should map token types to the names of color functions (see the colorette styles reference).

A color can also be specified as a hex value starting with the # symbol.

const colorize = require('json-colorizer');
console.log(
  colorize(
    { foo: 'bar' },
    {
      colors: {
        STRING_KEY: 'green',
        STRING_LITERAL: 'magentaBright',
        NUMBER_LITERAL: 'blue'
      }
    }
  )
);

The tokens available are:

• BRACE
• BRACKET
• COLON
• COMMA
• STRING_KEY
• STRING_LITERAL
• NUMBER_LITERAL
• BOOLEAN_LITERAL
• NULL_LITERAL