Function isAsciiString

deps/undici/src/lib/web/fetch/formdata-parser.js:17–24

* @param {string} chars

(chars)

 * @param {string} chars
 */
function isAsciiString (chars) {
  for (let i = 0; i < chars.length; ++i) {
    if ((chars.charCodeAt(i) & ~0x7F) !== 0) {
      return false
    }
  }
  return true
}

/**
 * @see https://andreubotella.github.io/multipart-form-data/#multipart-form-data-boundary