Function createRepl

src/repl.ts:150–438

(options: CreateReplOptions = {})

 * @category REPL
 */
export function createRepl(options: CreateReplOptions = {}) {
  const { ignoreDiagnosticsThatAreAnnoyingInInteractiveRepl = true } = options;
  let service = options.service;
  let nodeReplServer: REPLServer;
  // If `useGlobal` is not true, then REPL creates a context when started.
  // This stores a reference to it or to `global`, whichever is used, after REPL has started.
  let context: Context | undefined;
  const state =
    options.state ?? new EvalState(join(process.cwd(), REPL_FILENAME));
  const evalAwarePartialHost = createEvalAwarePartialHost(
    state,
    options.composeWithEvalAwarePartialHost
  );
  const stdin = options.stdin ?? process.stdin;
  const stdout = options.stdout ?? process.stdout;
  const stderr = options.stderr ?? process.stderr;
  const _console =
    stdout === process.stdout && stderr === process.stderr
      ? console
      : new Console(stdout, stderr);

  const replService: ReplService = {
    state: options.state ?? new EvalState(join(process.cwd(), EVAL_FILENAME)),
    setService,
    evalCode,
    evalCodeInternal,
    nodeEval,
    evalAwarePartialHost,
    start,
    startInternal,
    stdin,
    stdout,
    stderr,
    console: _console,
  };

  return replService;

  function setService(_service: Service) {
    service = _service;
    if (ignoreDiagnosticsThatAreAnnoyingInInteractiveRepl) {
      service.addDiagnosticFilter({
        appliesToAllFiles: false,
        filenamesAbsolute: [state.path],
        diagnosticsIgnored: [
          2393, // Duplicate function implementation: https://github.com/TypeStrong/ts-node/issues/729
          6133, // <identifier> is declared but its value is never read. https://github.com/TypeStrong/ts-node/issues/850
          7027, // Unreachable code detected. https://github.com/TypeStrong/ts-node/issues/469
          ...(service.shouldReplAwait ? topLevelAwaitDiagnosticCodes : []),
        ],
      });
    }
  }

  function evalCode(code: string) {
    const result = appendCompileAndEvalInput({
      service: service!,
      state,