js-yaml 4.1.0

JS-YAML is a powerful JavaScript module that implements YAML - a human-friendly data serialization language. It began as a port of PyYAML but quickly evolved into its own entity, becoming robust, fast, and in compliance with the YAML 1.2 specification. JS-YAML is known for its efficiency in parsing JavaScript objects into YAML strings and vice versa, making it an ideal companion for developers that frequently work with both JavaScript and YAML files.

If you want to utilize JS-YAML in your project, you need to first install it using Node Package Manager (npm) by running npm install js-yaml. If you wish to know about YAML files from the command line interface (CLI), you can install it globally by running npm install -g js-yaml.

To load and read a YAML document, you can use the load() function. Here's a rough example of how you might use JS-YAML:

const yaml = require('js-yaml');
const fs   = require('fs');

// Get document, or throw exception on error
try {
  const doc = yaml.load(fs.readFileSync('/home/ixti/example.yml', 'utf8'));
  console.log(doc);
} catch (e) {
  console.log(e);
}

In the code sample above, we first import the js-yaml and fs modules. After that, we attempt to load and read a YAML document (example.yml in this case). If the document is successfully parsed, its contents are then logged to the console; otherwise, an error is displayed.

For converting JavaScript objects into YAML formatted documents, the dump() function comes in handy. This function will serialize a JavaScript object as a YAML document. Here's how this function can be used:

const yaml = require('js-yaml');
let obj = { foo: 'Foo', bar: 'Bar', baz: 'Baz' };
let ymlText = yaml.dump(obj);
console.log(ymlText);

This script will output:

foo: 'Foo'
bar: 'Bar'
baz: 'Baz'

JS-YAML's documentation can be found here. The documentation explores various functionalities of the module, from basic usage to the more advanced processes, including how to create custom tags, different methods for serialization and parsing, and how to use different schemas. This comprehensive documentation will prove incredibly useful for anyone looking to optimize their usage of JS-YAML for their specific use cases.