feat: add URLPattern API (#11941)

This adds support for the URLPattern  API.

The API is added in --unstable only, as it has not yet shipped in any
browser. It is targeted for shipping in Chrome 95.

Spec: https://wicg.github.io/urlpattern/

Co-authored-by: crowlKats < crowlkats@toaxl.com >

1 files changed, 45 insertions, 0 deletions

diff --git a/cli/tests/unit/urlpattern_test.ts b/cli/tests/unit/urlpattern_test.ts
new file mode 100644
index 000000000..37a662ac1
--- /dev/null
+++ b/cli/tests/unit/urlpattern_test.ts
@@ -0,0 +1,45 @@
+// Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.
+import { assert, assertEquals, unitTest } from "./test_util.ts";
+
+unitTest(function urlPatternFromString() {
+  const pattern = new URLPattern("https://deno.land/foo/:bar");
+  assertEquals(pattern.protocol, "https");
+  assertEquals(pattern.hostname, "deno.land");
+  assertEquals(pattern.pathname, "/foo/:bar");
+
+  assert(pattern.test("https://deno.land/foo/x"));
+  assert(!pattern.test("https://deno.com/foo/x"));
+  const match = pattern.exec("https://deno.land/foo/x");
+  assert(match);
+  assertEquals(match.pathname.input, "/foo/x");
+  assertEquals(match.pathname.groups, { bar: "x" });
+});
+
+unitTest(function urlPatternFromStringWithBase() {
+  const pattern = new URLPattern("/foo/:bar", "https://deno.land");
+  assertEquals(pattern.protocol, "https");
+  assertEquals(pattern.hostname, "deno.land");
+  assertEquals(pattern.pathname, "/foo/:bar");
+
+  assert(pattern.test("https://deno.land/foo/x"));
+  assert(!pattern.test("https://deno.com/foo/x"));
+  const match = pattern.exec("https://deno.land/foo/x");
+  assert(match);
+  assertEquals(match.pathname.input, "/foo/x");
+  assertEquals(match.pathname.groups, { bar: "x" });
+});
+
+unitTest(function urlPatternFromInit() {
+  const pattern = new URLPattern({
+    pathname: "/foo/:bar",
+  });
+  assertEquals(pattern.protocol, "*");
+  assertEquals(pattern.hostname, "*");
+  assertEquals(pattern.pathname, "/foo/:bar");
+
+  assert(pattern.test("https://deno.land/foo/x"));
+  assert(pattern.test("https://deno.com/foo/x"));
+  assert(!pattern.test("https://deno.com/bar/x"));
+
+  assert(pattern.test({ pathname: "/foo/x" }));
+});