Function updateFile

cli/src/tasks/migrate.ts:532–580

(
  config: Config,
  filename: string,
  textStart: string,
  textEnd: string,
  replacement?: string,
  skipIfNotFound?: boolean,
)

}

async function updateFile(
  config: Config,
  filename: string,
  textStart: string,
  textEnd: string,
  replacement?: string,
  skipIfNotFound?: boolean,
): Promise<boolean> {
  if (config === null) {
    return false;
  }
  const path = filename;
  let txt = readFile(path);
  if (!txt) {
    return false;
  }
  if (txt.includes(textStart)) {
    if (replacement) {
      txt = setAllStringIn(txt, textStart, textEnd, replacement);
      writeFileSync(path, txt, { encoding: 'utf-8' });
    } else {
      // Replacing in code so we need to count the number of brackets to find the end of the function in swift
      const lines = txt.split('\n');
      let replaced = '';
      let keep = true;
      let brackets = 0;
      for (const line of lines) {
        if (line.includes(textStart)) {
          keep = false;
        }
        if (!keep) {
          brackets += (line.match(/{/g) || []).length;
          brackets -= (line.match(/}/g) || []).length;
          if (brackets == 0) {
            keep = true;
          }
        } else {
          replaced += line + '\n';
        }
      }
      writeFileSync(path, replaced, { encoding: 'utf-8' });
    }
    return true;
  } else if (!skipIfNotFound) {
    logger.error(`Unable to find "${textStart}" in ${filename}. Try updating it manually`);
  }

  return false;
}

export function setAllStringIn(data: string, start: string, end: string, replacement: string): string {
  let position = 0;