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

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

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

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

// User passed `-e` or `--eval` arguments to Node without `-i` or
// `--interactive`.

prepareMainThreadExecution();
addBuiltinLibsToObject(globalThis, "<eval>");
markBootstrapComplete();

const code = getOptionValue("--eval");
const source = getOptionValue("--experimental-strip-types")
  ? stripTypeScriptTypes(code)
  : code;

const print = getOptionValue("--print");
const shouldLoadESM =
  getOptionValue("--import").length > 0 ||
  getOptionValue("--experimental-loader").length > 0;
if (
  getOptionValue("--input-type") === "module" ||
  (getOptionValue("--experimental-default-type") === "module" &&
    getOptionValue("--input-type") !== "commonjs")
) {
  ((...args) => globalThis.evalModuleEntryPoint(...args))(source, print);
} else {
  // For backward compatibility, we want the identifier crypto to be the
  // `node:crypto` module rather than WebCrypto.
  const isUsingCryptoIdentifier =
    getOptionValue("--experimental-global-webcrypto") &&
    RegExp.prototype.exec.call(/\bcrypto\b/, source) !== null;
  const shouldDefineCrypto =
    isUsingCryptoIdentifier && require("binding/config").hasOpenSSL;

  if (isUsingCryptoIdentifier && !shouldDefineCrypto) {
    // This is taken from `addBuiltinLibsToObject`.
    const object = globalThis;
    const name = "crypto";
    const setReal = (val) => {
      // Deleting the property before re-assigning it disables the
      // getter/setter mechanism.
      delete object[name];
      object[name] = val;
    };
    Object.defineProperty(object, name, { __proto__: null, set: setReal });
  }
  ((...args) => globalThis.evalScript(...args))(
    "[eval]",
    shouldDefineCrypto
      ? print
        ? `let crypto=require("node:crypto");{${source}}`
        : `(crypto=>{{${source}}})(require('node:crypto'))`
      : source,
    getOptionValue("--inspect-brk"),
    print,
    shouldLoadESM,
  );
}