blueconfig/lib/performer/parser.js

Merge and validate your config depending of your schema, forked from node-convict.

const cvtError = require('./../error.js')
const CUSTOMISE_FAILED = cvtError.CUSTOMISE_FAILED

/**
 * Load and parse file with parser
 *
 * @private
 * @class
 */
function Parser() {
  this.engines = {
    '*': JSON.parse
  }
}


module.exports = Parser


/**
 * Parses data with stored engine
 */
Parser.prototype.parse = function(extension, data) {
  const parser = this.engines[extension] || this.engines['*']

  return parser(data)
}


/**
 * Adds new custom file parsers
 */
Parser.prototype.add = function(extension, parse) {
  if (typeof parse !== 'function') throw new CUSTOMISE_FAILED('Invalid parser.parse function')

  const extensions = !Array.isArray(extension) ? [extension] : extension
  extensions.forEach((extension) => {
    if (typeof extension !== 'string') throw new CUSTOMISE_FAILED('Invalid parser.extension')
    this.engines[extension] = parse
  })
}