Function updateOptions

update-readme.js:159–211

* @param {string} content * @returns {Promise }

(content)

 * @returns {Promise<string>}
 */
async function updateOptions(content) {
  console.log('Listing options...');
  execSync('node cli.js --help > help.txt');
  const output = fs.readFileSync('help.txt');
  fs.unlinkSync('help.txt');
  const lines = output.toString().split('\n');
  const firstLine = lines.findIndex(line => line.includes('--version'));
  lines.splice(0, firstLine + 1);
  const lastLine = lines.findIndex(line => line.includes('--help'));
  lines.splice(lastLine);

  /**
   * @type {{ name: string, value: string }[]}
   */
  const options = [];
  for (let line of lines) {
    if (line.startsWith('  --')) {
      const l = line.substring('  --'.length);
      const gapIndex = l.indexOf('  ');
      const name = l.substring(0, gapIndex).trim();
      const value = l.substring(gapIndex).trim();
      options.push({ name, value });
    } else {
      const value = line.trim();
      options[options.length - 1].value += ' ' + value;
    }
  }

  const table = [];
  table.push(`| Option | Description |`);
  table.push(`|--------|-------------|`);
  for (const option of options) {
    const prefix = option.name.split(' ')[0];
    const envName = optionEnvName(prefix);
    table.push(`| --${option.name} | ${option.value}<br>*env* \`${envName}\` |`);
  }

  if (process.env.PRINT_ENV) {
    const envTable = [];
    envTable.push(`| Environment |`);
    envTable.push(`|-------------|`);
    for (const option of options) {
      const prefix = option.name.split(' ')[0];
      const envName = optionEnvName(prefix);
      envTable.push(`| \`${envName}\` ${option.value} |`);
    }
    console.log(envTable.join('\n'));
  }

  const startMarker = `<!--- Options generated by ${path.basename(__filename)} -->`;
  const endMarker = `<!--- End of options generated section -->`;
  return updateSection(content, startMarker, endMarker, table);
}

/**
 * @param {string} content