Method constructor

lib/repl.js:280–969

(prompt,
              stream,
              eval_,
              useGlobal,
              ignoreUndefined,
              replMode)

class REPLServer extends Interface {
  constructor(prompt,
              stream,
              eval_,
              useGlobal,
              ignoreUndefined,
              replMode) {
    let options;
    if (prompt !== null && typeof prompt === 'object') {
      // An options object was given.
      options = { ...prompt };
      stream = options.stream || options.socket;
      eval_ = options.eval;
      useGlobal = options.useGlobal;
      ignoreUndefined = options.ignoreUndefined;
      prompt = options.prompt;
      replMode = options.replMode;
    } else {
      options = {};
    }

    if (!options.input && !options.output) {
      // Legacy API, passing a 'stream'/'socket' option.
      // Use stdin and stdout as the default streams if none were given.
      stream ||= process;

      // We're given a duplex readable/writable Stream, like a `net.Socket`
      // or a custom object with 2 streams, or the `process` object.
      options.input = stream.stdin || stream;
      options.output = stream.stdout || stream;
    }

    if (options.terminal === undefined) {
      options.terminal = options.output.isTTY;
    }
    options.terminal = !!options.terminal;

    if (options.terminal && options.useColors === undefined) {
      // If possible, check if stdout supports colors or not.
      options.useColors = shouldColorize(options.output);
    }

    const preview = options.terminal &&
      (options.preview !== undefined ? !!options.preview : !eval_);

    super({
      input: options.input,
      output: options.output,
      completer: options.completer || completer,
      terminal: options.terminal,
      historySize: options.historySize,
      prompt,
    });

    ObjectDefineProperty(this, 'inputStream', {
      __proto__: null,
      get: pendingDeprecation ?
        deprecate(() => this.input,
                  'repl.inputStream and repl.outputStream are deprecated. ' +