Current File : //lib/node_modules/pm2/node_modules/yamljs/README.md
yaml.js
=======
Standalone JavaScript YAML 1.2 Parser & Encoder. Works under node.js and all major browsers. Also brings command line YAML/JSON conversion tools.
Mainly inspired from [Symfony Yaml Component](https://github.com/symfony/Yaml).
How to use
----------
Import yaml.js in your html page:
``` html
<script type="text/javascript" src="yaml.js"></script>
```
Parse yaml string:
``` js
nativeObject = YAML.parse(yamlString);
```
Dump native object into yaml string:
``` js
yamlString = YAML.stringify(nativeObject[, inline /* @integer depth to start using inline notation at */[, spaces /* @integer number of spaces to use for indentation */] ]);
```
Load yaml file:
``` js
nativeObject = YAML.load('file.yml');
```
Load yaml file:
``` js
YAML.load('file.yml', function(result)
{
nativeObject = result;
});
```
Use with node.js
----------------
Install module:
``` bash
npm install yamljs
```
Use it:
``` js
YAML = require('yamljs');
// parse YAML string
nativeObject = YAML.parse(yamlString);
// Generate YAML
yamlString = YAML.stringify(nativeObject, 4);
// Load yaml file using YAML.load
nativeObject = YAML.load('myfile.yml');
```
Command line tools
------------------
You can enable the command line tools by installing yamljs as a global module:
``` bash
npm install -g yamljs
```
Then, two cli commands should become available: **yaml2json** and **json2yaml**. They let you convert YAML to JSON and JSON to YAML very easily.
**yaml2json**
```
usage: yaml2json [-h] [-v] [-p] [-i INDENTATION] [-s] [-r] [-w] input
Positional arguments:
input YAML file or directory containing YAML files.
Optional arguments:
-h, --help Show this help message and exit.
-v, --version Show program's version number and exit.
-p, --pretty Output pretty (indented) JSON.
-i INDENTATION, --indentation INDENTATION
Number of space characters used to indent code (use
with --pretty, default: 2).
-s, --save Save output inside JSON file(s) with the same name.
-r, --recursive If the input is a directory, also find YAML files in
sub-directories recursively.
-w, --watch Watch for changes.
```
**json2yaml**
```
usage: json2yaml [-h] [-v] [-d DEPTH] [-i INDENTATION] [-s] [-r] [-w] input
Positional arguments:
input JSON file or directory containing JSON files.
Optional arguments:
-h, --help Show this help message and exit.
-v, --version Show program's version number and exit.
-d DEPTH, --depth DEPTH
Set minimum level of depth before generating inline
YAML (default: 2).
-i INDENTATION, --indentation INDENTATION
Number of space characters used to indent code
(default: 2).
-s, --save Save output inside YML file(s) with the same name.
-r, --recursive If the input is a directory, also find JSON files in
sub-directories recursively.
-w, --watch Watch for changes.
```
**examples**
``` bash
# Convert YAML to JSON and output resulting JSON on the console
yaml2json myfile.yml
# Store output inside a JSON file
yaml2json myfile.yml > output.json
# Output "pretty" (indented) JSON
yaml2json myfile.yml --pretty
# Save the output inside a file called myfile.json
yaml2json myfile.yml --pretty --save
# Watch a full directory and convert any YAML file into its JSON equivalent
yaml2json mydirectory --pretty --save --recursive
# Convert JSON to YAML and store output inside a JSON file
json2yaml myfile.json > output.yml
# Output YAML that will be inlined only after 8 levels of indentation
json2yaml myfile.json --depth 8
# Save the output inside a file called myfile.json with 4 spaces for each indentation
json2yaml myfile.json --indentation 4
# Watch a full directory and convert any JSON file into its YAML equivalent
json2yaml mydirectory --pretty --save --recursive
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