nstdlib-nightly/lib/internal/main/eval_stdin.mjs

Node.js standard library converted to runtime-agnostic ES modules.

// Source: https://github.com/nodejs/node/blob/65eff1eb/lib/internal/main/eval_stdin.js

import {
  prepareMainThreadExecution,
  markBootstrapComplete,
} from "nstdlib/lib/internal/process/pre_execution";
import { getOptionValue } from "nstdlib/lib/internal/options";
import {
  evalModuleEntryPoint,
  evalScript,
  readStdin,
} from "nstdlib/lib/internal/process/execution";

// Stdin is not a TTY, we will read it and execute it.

prepareMainThreadExecution();
markBootstrapComplete();

readStdin((code) => {
  // This is necessary for fork() and CJS module compilation.
  // TODO(joyeecheung): pass this with something really internal.
  process._eval = code;

  const print = getOptionValue("--print");
  const shouldLoadESM = getOptionValue("--import").length > 0;
  if (
    getOptionValue("--input-type") === "module" ||
    (getOptionValue("--experimental-default-type") === "module" &&
      getOptionValue("--input-type") !== "commonjs")
  ) {
    ((...args) => globalThis.evalModuleEntryPoint(...args))(code, print);
  } else {
    ((...args) => globalThis.evalScript(...args))(
      "[stdin]",
      code,
      getOptionValue("--inspect-brk"),
      print,
      shouldLoadESM,
    );
  }
});