mountenv/build/expand.js

mount/load .env files with support for .env.prod/.env.dev files

// Generated by CoffeeScript 2.7.0
(function() {
  var ESCAPE_CHAR, REGEX, interpolate;

  ESCAPE_CHAR = '\\';

  REGEX = {
    hasVars: /\$/,
    variable: /(?:\\)?(?:\$([a-zA-Z0-9_]+)|\${([a-zA-Z0-9_]+)})/g
  };

  interpolate = function(env, value) {
    return value.replace(REGEX.variable, function(match, key1, key2, index) {
      var key, replacement;
      key = key1 || key2;
      if (match[0] === ESCAPE_CHAR) {
        return match.slice(1);
      } else {
        replacement = process.env[key] || env[key] || '';
        if (replacement) {
          replacement = interpolate(env, replacement);
        }
        return replacement;
      }
    });
  };

  module.exports = function(env) {
    var i, key, len, ref, value;
    ref = Object.keys(env);
    for (i = 0, len = ref.length; i < len; i++) {
      key = ref[i];
      value = env[key];
      if (REGEX.hasVars.test(value)) {
        env[key] = interpolate(env, value);
      }
    }
    return env;
  };

}).call(this);