urlToScheme.test.js

import { assert } from "@jsenv/assert"
import { urlToScheme } from "@jsenv/util"

{
  const actual = urlToScheme("http://example.com/dir/file.js")
  const expected = "http"
  assert({ actual, expected })
}

{
  const actual = urlToScheme("https://example.com/dir/file.js")
  const expected = "https"
  assert({ actual, expected })
}

{
  const actual = urlToScheme("file:///example.com/dir/file.js")
  const expected = "file"
  assert({ actual, expected })
}

{
  const actual = urlToScheme("about:blank")
  const expected = "about"
  assert({ actual, expected })
}