Function handleError

src/repl.ts:268–309

(error: unknown)

    // well-known errors, and invoke `callback()`
    // TODO should evalCode API get the same error-handling benefits?
    function handleError(error: unknown) {
      // Don't show TLA hint if the user explicitly disabled repl top level await
      const canLogTopLevelAwaitHint =
        service!.options.experimentalReplAwait !== false &&
        !service!.shouldReplAwait;
      if (error instanceof TSError) {
        // Support recoverable compilations using >= node 6.
        if (Recoverable && isRecoverable(error)) {
          callback(new Recoverable(error));
          return;
        } else {
          _console.error(error);

          if (
            canLogTopLevelAwaitHint &&
            error.diagnosticCodes.some((dC) =>
              topLevelAwaitDiagnosticCodes.includes(dC)
            )
          ) {
            _console.error(getTopLevelAwaitHint());
          }
          callback(null);
        }
      } else {
        let _error = error as Error | undefined;
        if (
          canLogTopLevelAwaitHint &&
          _error instanceof SyntaxError &&
          _error.message?.includes('await is only valid')
        ) {
          try {
            // Only way I know to make our hint appear after the error
            _error.message += `\n\n${getTopLevelAwaitHint()}`;
            _error.stack = _error.stack?.replace(
              /(SyntaxError:.*)/,
              (_, $1) => `${$1}\n\n${getTopLevelAwaitHint()}`
            );
          } catch {}
        }
        callback(_error as Error);
      }
    }
    function getTopLevelAwaitHint() {
      return `Hint: REPL top-level await requires TypeScript version 3.8 or higher and target ES2018 or higher. You are using TypeScript ${
        service!.ts.version