feat(std/node/url): add URL export

[balupton]

In Node.js, URL is not global, so TypeScript complains:

Solution is to import URL from the url builtin module:

Which can be seen to work with Node.js via:

node --input-type=module -e "import { URL } from 'url'; console.log(new URL('https://deno.land'))"

URL {
  href: 'https://deno.land/',
  origin: 'https://deno.land',
  protocol: 'https:',
  username: '',
  password: '',
  host: 'deno.land',
  hostname: 'deno.land',
  port: '',
  pathname: '/',
  search: '',
  searchParams: URLSearchParams {},
  hash: ''
}

This PR adds compatibility to Deno:

deno eval "import { URL } from 'https://raw.githubusercontent.com/denoland/deno/01e55499aeebf80a04dbbe2e5bd3f5efa94b0cff/std/node/url.ts'; console.log(new URL('https://deno.land'))"

Download https://raw.githubusercontent.com/denoland/deno/01e55499aeebf80a04dbbe2e5bd3f5efa94b0cff/std/node/url.ts
Download https://raw.githubusercontent.com/denoland/deno/01e55499aeebf80a04dbbe2e5bd3f5efa94b0cff/std/path/_constants.ts
Download https://raw.githubusercontent.com/denoland/deno/01e55499aeebf80a04dbbe2e5bd3f5efa94b0cff/std/node/path.ts
Download https://raw.githubusercontent.com/denoland/deno/01e55499aeebf80a04dbbe2e5bd3f5efa94b0cff/std/path/mod.ts
Download https://raw.githubusercontent.com/denoland/deno/01e55499aeebf80a04dbbe2e5bd3f5efa94b0cff/std/path/win32.ts
Download https://raw.githubusercontent.com/denoland/deno/01e55499aeebf80a04dbbe2e5bd3f5efa94b0cff/std/path/posix.ts
Download https://raw.githubusercontent.com/denoland/deno/01e55499aeebf80a04dbbe2e5bd3f5efa94b0cff/std/path/common.ts
Download https://raw.githubusercontent.com/denoland/deno/01e55499aeebf80a04dbbe2e5bd3f5efa94b0cff/std/path/separator.ts
Download https://raw.githubusercontent.com/denoland/deno/01e55499aeebf80a04dbbe2e5bd3f5efa94b0cff/std/path/_interface.ts
Download https://raw.githubusercontent.com/denoland/deno/01e55499aeebf80a04dbbe2e5bd3f5efa94b0cff/std/path/glob.ts
Download https://raw.githubusercontent.com/denoland/deno/01e55499aeebf80a04dbbe2e5bd3f5efa94b0cff/std/path/_util.ts
Download https://raw.githubusercontent.com/denoland/deno/01e55499aeebf80a04dbbe2e5bd3f5efa94b0cff/std/_util/assert.ts
Check file:///Users/balupton/Projects/active/filedirname/__$deno$eval.ts
URL { href: "https://deno.land/", origin: "https://deno.land", protocol: "https:", username: "", password: "", host: "deno.land", hostname: "deno.land", port: "", pathname: "/", hash: "", search: "" }

Which before this PR would fail with the following:

deno eval "import { URL } from 'https://cdn.deno.land/std/versions/0.65.0/raw/node/url.ts'; console.log(new URL('https://deno.land'))"

Download https://cdn.deno.land/std/versions/0.65.0/raw/node/url.ts
Download https://cdn.deno.land/std/versions/0.65.0/raw/path/_constants.ts
Download https://cdn.deno.land/std/versions/0.65.0/raw/node/path.ts
Download https://cdn.deno.land/std/versions/0.65.0/raw/path/mod.ts
Download https://cdn.deno.land/std/versions/0.65.0/raw/path/win32.ts
Download https://cdn.deno.land/std/versions/0.65.0/raw/path/posix.ts
Download https://cdn.deno.land/std/versions/0.65.0/raw/path/common.ts
Download https://cdn.deno.land/std/versions/0.65.0/raw/path/separator.ts
Download https://cdn.deno.land/std/versions/0.65.0/raw/path/_interface.ts
Download https://cdn.deno.land/std/versions/0.65.0/raw/path/glob.ts
Download https://cdn.deno.land/std/versions/0.65.0/raw/path/_util.ts
Download https://cdn.deno.land/std/versions/0.65.0/raw/_util/assert.ts
Check file:///Users/balupton/Projects/active/filedirname/__$deno$eval.ts
error: TS2305 [ERROR]: Module '"https://cdn.deno.land/std/versions/0.65.0/raw/node/url"' has no exported member 'URL'.
import { URL } from 'https://cdn.deno.land/std/versions/0.65.0/raw/node/url.ts'; console.log(new URL('https://deno.land'))
         ~~~
    at file:///Users/balupton/Projects/active/filedirname/__$deno$eval.ts:1:10

All good for review & squash merge.

[ry]

Could you add a tiny little test to std/node/url_test.ts ?

[balupton]

Could you add a tiny little test to std/node/url_test.ts ?

ok, give me a min

[balupton]

Done.

Question, do the tests load automatically, or do I need to import it somewhere? As I had to create the url_test.ts file.

[balupton]

Seems I can't format it as I can't get the formater to run:

> python tools/format.py
Traceback (most recent call last):
  File "tools/format.py", line 89, in <module>
    sys.exit(main())
  File "tools/format.py", line 51, in main
    dprint()
  File "tools/format.py", line 59, in dprint
    run(command, shell=False, quiet=True)
  File "/Users/balupton/Projects/active/deno/tools/util.py", line 63, in run
    rc = subprocess.call(args, cwd=cwd, env=env, shell=shell)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/subprocess.py", line 172, in call
    return Popen(*popenargs, **kwargs).wait()
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/subprocess.py", line 394, in __init__
    errread, errwrite)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/subprocess.py", line 1047, in _execute_child
    raise child_exception
OSError: [Errno 2] No such file or directory
[1]:02:00:30:/Users/balupton/Projects/active/deno:patch-1
> python --version
Python 2.7.16

Can someone else alter the PR with the necessary changes.

Update: Checked the CI logs instead, and submitted the fix.

[ry]

Thanks for the test @balupton - LGTM