cjson


CJSON (Commented JavaScript Object Notation) is a comments enabled json config loader.

JSON has a good spec, is implemented in every language, has easy to read syntax and is much more powerful than ini files.

JSON is perfect for writing config files, except of one problem - there is no comments, but sometimes config files get large and need to be commented.

Well, you could just evaluate json file as a JavaScript using one-liner, right?

The purpose of this module is to avoid dirty JavaScript configs and to enable clean, consistent, secure, portable and JSON valid notation.

CJSON supports JavaScript style comments: singleline "//" and multiline "/**/". It takes care about comments inside of strings.

Example of such shiny config file:

``javascript
/*
* This is my app configuration file.
*
*/
{
"host": "localhost",
// app is listening on this port
"port": 8888
}
`

API

$3

- path {String|Array} absolute path to the file, array of paths or directory
- options {Boolean|Object} optional options. If you pass true as second param, its the same like {merge: true} and will merge all configs together.


options defaults:
`javascript
{
// merge all passed/found config files, see cjson.extend
merge: false,
// allows you to do some string replacements, see cjson.replace.
replace: null,
// freeze config recursively, see cjson.freeze
freeze: false,
// you can use any other extension for your config files, f.e. .cjson
ext: '.json',
// you can use any parser you want. the default uses JSON.parse for maximum
// speed, if it throws it uses uses an alternative parser to give more
// helpful errors
parse: jph.parse
}
`

Examples:

`javascript
// just one config
var conf = cjson.load('/path/to/your/config.json');

// array of configs
var conf = cjson.load(['/path/to/your/config1.json', '/path/to/your/config2.json']);

//output
{
config1: {key1: 'value1'}
config2: {key2: 'value2'}
}


// use optional merge parameter
// array of configs
var conf = cjson.load(['/path/to/your/config1.json', '/path/to/your/config2.json'], true);

// output
{
key1: 'value1',
key2: 'value2'
}


// load all config files from a directory
var conf = cjson.load('/path/to/your/configs');

// overwriting dev config with production
var paths = ['/path/to/conf.json'];
if (process.env.NODE_ENV ==='production') {
paths.push('/path/to/conf-prod.json');
}
var conf = cjson.load(paths, true);
`

$3

Merge the contents of two or more objects together into the first object.

- deep If true, the merge becomes recursive.
- target The object to extend. It will receive the new properties.
- object1 An object containing additional properties to merge in.
- objectN Additional objects containing properties to merge in.

Example:

`javascript
var object = cjson.extend({}, object1, object2);
`

$3

Remove JavaScript style comments, singleline - '//' and multiline - '/**/'. It takes care
about comments inside of strings and escaping.

$3

Like JSON.parse, but it takes care about comments. Optional reviver argument
is for JSON.parse method and will be called for every key and value at every level
of the final result

$3

Replace all strings {{key}} contained in {key: 'value'}, where key can be any
property of passed obj.

Example:
`javascript
var str = '{"path": "{{root}}/src"}'; // json file contents
cjson.replace(str, {root: '/usr'}); // '{"path": "/usr/src"}'
``

$3

Recursively freeze an object.

Installation

npm install cjson