dotenv.js

// Origin : dotenv source
const NEWLINE = '\n'
const RE_INI_KEY_VAL = /^\s*([\w.-]+)\s*=\s*(.*)?\s*$/
const RE_NEWLINES = /\\n/g
const NEWLINES_MATCH = /\n|\r|\r\n/

// Parses src into an Object
function parse (src /*: string | Buffer */, options /*: ?DotenvParseOptions */) /*: DotenvParseOutput */ {
    const debug = Boolean(options && options.debug)
    const obj = {}

    // convert Buffers before splitting into lines and processing
    src.toString().split(NEWLINES_MATCH).forEach(function (line, idx) {
      // matching "KEY' and 'VAL' in 'KEY=VAL'
      const keyValueArr = line.match(RE_INI_KEY_VAL)
      // matched?
      if (keyValueArr != null) {
        const key = keyValueArr[1]
        // default undefined or missing values to empty string
        let val = (keyValueArr[2] || '')
        const end = val.length - 1
        const isDoubleQuoted = val[0] === '"' && val[end] === '"'
        const isSingleQuoted = val[0] === "'" && val[end] === "'"

        // if single or double quoted, remove quotes
        if (isSingleQuoted || isDoubleQuoted) {
          val = val.substring(1, end)

          // if double quoted, expand newlines
          if (isDoubleQuoted) {
            val = val.replace(RE_NEWLINES, NEWLINE)
          }
        } else {
          // remove surrounding whitespace
          val = val.trim()
        }

        obj[key] = val
      } else if (debug) {
        log(`did not match key and value when parsing line ${idx + 1}: ${line}`)
      }
    })

    return obj
  }

module.exports = {
  parse: parse
}