deno/js/main.ts

// Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.

// eslint-disable-next-line @typescript-eslint/no-triple-slash-reference
/// <reference path="./plugins.d.ts" />

import "./globals";

import { assert, log } from "./util";
import * as os from "./os";
import { args } from "./deno";
import { setPrepareStackTrace } from "./error_stack";
import { replLoop } from "./repl";
import { xevalMain, XevalFunc } from "./xeval";
import { setVersions } from "./version";
import { window } from "./window";
import { setLocation } from "./location";

// builtin modules
import * as deno from "./deno";

export default function denoMain(
  preserveDenoNamespace: boolean = true,
  name?: string
): void {
  const startResMsg = os.start(preserveDenoNamespace, name);

  setVersions(startResMsg.denoVersion()!, startResMsg.v8Version()!);

  // handle `--version`
  if (startResMsg.versionFlag()) {
    console.log("deno:", deno.version.deno);
    console.log("v8:", deno.version.v8);
    console.log("typescript:", deno.version.typescript);
    os.exit(0);
  }

  setPrepareStackTrace(Error);

  const mainModule = startResMsg.mainModule();
  if (mainModule) {
    assert(mainModule.length > 0);
    setLocation(mainModule);
  }

  const cwd = startResMsg.cwd();
  log("cwd", cwd);

  for (let i = 1; i < startResMsg.argvLength(); i++) {
    args.push(startResMsg.argv(i));
  }
  log("args", args);
  Object.freeze(args);

  if (window["_xevalWrapper"] !== undefined) {
    xevalMain(window["_xevalWrapper"] as XevalFunc, startResMsg.xevalDelim());
  } else if (!mainModule) {
    replLoop();
  }
}