ihub-framework-js/libs/environment.js

Legacy version of iHub Framework written in Javascript

const fs = require('fs');
const path = require('path');

const enviromentFilePath = path.join(process.cwd(), '.env');

const parse = (src) => {
  const obj = {};

  // convert Buffers before splitting into lines and processing
  src.toString().split('\n').forEach((line) => {
    // matching "KEY' and 'VAL' in 'KEY=VAL'
    const keyValueArr = line.match(/^\s*([\w.-]+)\s*=\s*(.*)?\s*$/);
    // matched?
    if (keyValueArr != null) {
      const key = keyValueArr[1];

      // default undefined or missing values to empty string
      let value = keyValueArr[2] || '';

      // expand newlines in quoted values
      const len = value ? value.length : 0;
      if (len > 0 && value.charAt(0) === '"' && value.charAt(len - 1) === '"') {
        value = value.replace(/\\n/gm, '\n');
      }

      // remove any surrounding quotes and extra spaces
      value = value.replace(/(^['"]|['"]$)/g, '').trim();

      // check if it's number
      if (/^\d+$/.test(value)) {
        value = parseInt(value, 10);
      }

      obj[key] = value;
    }
  });

  return obj;
};

(() => {
  // Checks if .env file exists
  if (!fs.existsSync(enviromentFilePath)) return;

  try {
    const parsed = parse(fs.readFileSync(enviromentFilePath, 'utf8'));

    Object.keys(parsed).forEach((key) => {
      if (!Object.prototype.hasOwnProperty.call(process.env, key)) {
        process.env[key] = parsed[key];
      }
    });
  } catch (e) {
    throw new Error(e);
  }
})();