dotenv-parser-serializer/src/serialize.js

A dotenv file parser and serializer

// @flow

export default function serialize(obj) {

  const serializedDoc = [];

  for (const [key, entry] of Object.entries(obj)) {
    const description = typeof entry === 'object' ? entry.description : null;
    const value = typeof entry === 'object' ? entry.value : entry;

    let serializedEntry = '';

    if (description) {
      const descriptionLines = description.split('\n');
      for (const line of descriptionLines) {
        serializedEntry += `# ${line}\n`;
      }
    }

    serializedEntry += `${key}=${JSON.stringify(value)}`;

    serializedDoc.push(serializedEntry);
  }

  return serializedDoc.join('\n\n');
}