Function exists

cli.js:177–190

* @typedef {Object} DataFile * @property {Buffer} buffer * @property {string} text * @property {Record } json * @property {string} name * @property {string} path * * @typedef {Object} SchemaFile * @property {Buffer} buffer * @property {string} text * @property {JsonSch

(/** @type {string} */ filepath)

 */

async function exists(/** @type {string} */ filepath) {
  return fs
    .stat(filepath)
    .then(() => {
      return true
    })
    .catch((/** @type {NodeJS.ErrnoException} */ err) => {
      if (err instanceof Error && err.code === 'ENOENT') {
        return false
      } else {
        throw err
      }
    })
}

async function readJsonFile(/** @type {string} */ filename) {
  return JSON.parse(await fs.readFile(filename, 'utf-8'))