Function createEvalAwarePartialHost

src/repl.ts:467–495

(
  state: EvalState,
  composeWith?: EvalAwarePartialHost
)

>;

export function createEvalAwarePartialHost(
  state: EvalState,
  composeWith?: EvalAwarePartialHost
): EvalAwarePartialHost {
  function readFile(path: string) {
    if (path === state.path) return state.input;

    if (composeWith?.readFile) return composeWith.readFile(path);

    try {
      return readFileSync(path, 'utf8');
    } catch (err) {
      /* Ignore. */
    }
  }
  function fileExists(path: string) {
    if (path === state.path) return true;

    if (composeWith?.fileExists) return composeWith.fileExists(path);

    try {
      const stats = statSync(path);
      return stats.isFile() || stats.isFIFO();
    } catch (err) {
      return false;
    }
  }
  return { readFile, fileExists };
}

const sourcemapCommentRe = /\/\/# ?sourceMappingURL=\S+[\s\r\n]*$/;