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diff --git a/cli/dts/lib.dom.extras.d.ts b/cli/dts/lib.dom.extras.d.ts
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+++ b/cli/dts/lib.dom.extras.d.ts
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+// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.
+
+/*
+ * This library contains DOM standards that are not currently included in the
+ * distributed `lib.dom.d.ts` file with TypeScript.
+ */
+
+/// <reference no-default-lib="true"/>
+
+interface AbortSignal extends EventTarget {
+  readonly reason?: unknown;
+}
+
+declare interface URLPatternInit {
+  protocol?: string;
+  username?: string;
+  password?: string;
+  hostname?: string;
+  port?: string;
+  pathname?: string;
+  search?: string;
+  hash?: string;
+  baseURL?: string;
+}
+
+declare type URLPatternInput = string | URLPatternInit;
+
+declare interface URLPatternComponentResult {
+  input: string;
+  groups: Record<string, string>;
+}
+
+/** `URLPatternResult` is the object returned from `URLPattern.exec`. */
+declare interface URLPatternResult {
+  /** The inputs provided when matching. */
+  inputs: [URLPatternInit] | [URLPatternInit, string];
+
+  /** The matched result for the `protocol` matcher. */
+  protocol: URLPatternComponentResult;
+  /** The matched result for the `username` matcher. */
+  username: URLPatternComponentResult;
+  /** The matched result for the `password` matcher. */
+  password: URLPatternComponentResult;
+  /** The matched result for the `hostname` matcher. */
+  hostname: URLPatternComponentResult;
+  /** The matched result for the `port` matcher. */
+  port: URLPatternComponentResult;
+  /** The matched result for the `pathname` matcher. */
+  pathname: URLPatternComponentResult;
+  /** The matched result for the `search` matcher. */
+  search: URLPatternComponentResult;
+  /** The matched result for the `hash` matcher. */
+  hash: URLPatternComponentResult;
+}
+
+/**
+ * The URLPattern API provides a web platform primitive for matching URLs based
+ * on a convenient pattern syntax.
+ *
+ * The syntax is based on path-to-regexp. Wildcards, named capture groups,
+ * regular groups, and group modifiers are all supported.
+ *
+ * ```ts
+ * // Specify the pattern as structured data.
+ * const pattern = new URLPattern({ pathname: "/users/:user" });
+ * const match = pattern.exec("/users/joe");
+ * console.log(match.pathname.groups.user); // joe
+ * ```
+ *
+ * ```ts
+ * // Specify a fully qualified string pattern.
+ * const pattern = new URLPattern("https://example.com/books/:id");
+ * console.log(pattern.test("https://example.com/books/123")); // true
+ * console.log(pattern.test("https://deno.land/books/123")); // false
+ * ```
+ *
+ * ```ts
+ * // Specify a relative string pattern with a base URL.
+ * const pattern = new URLPattern("/:article", "https://blog.example.com");
+ * console.log(pattern.test("https://blog.example.com/article")); // true
+ * console.log(pattern.test("https://blog.example.com/article/123")); // false
+ * ```
+ */
+declare class URLPattern {
+  constructor(input: URLPatternInput, baseURL?: string);
+
+  /**
+   * Test if the given input matches the stored pattern.
+   *
+   * The input can either be provided as a url string (with an optional base),
+   * or as individual components in the form of an object.
+   *
+   * ```ts
+   * const pattern = new URLPattern("https://example.com/books/:id");
+   *
+   * // Test a url string.
+   * console.log(pattern.test("https://example.com/books/123")); // true
+   *
+   * // Test a relative url with a base.
+   * console.log(pattern.test("/books/123", "https://example.com")); // true
+   *
+   * // Test an object of url components.
+   * console.log(pattern.test({ pathname: "/books/123" })); // true
+   * ```
+   */
+  test(input: URLPatternInput, baseURL?: string): boolean;
+
+  /**
+   * Match the given input against the stored pattern.
+   *
+   * The input can either be provided as a url string (with an optional base),
+   * or as individual components in the form of an object.
+   *
+   * ```ts
+   * const pattern = new URLPattern("https://example.com/books/:id");
+   *
+   * // Match a url string.
+   * let match = pattern.exec("https://example.com/books/123");
+   * console.log(match.pathname.groups.id); // 123
+   *
+   * // Match a relative url with a base.
+   * match = pattern.exec("/books/123", "https://example.com");
+   * console.log(match.pathname.groups.id); // 123
+   *
+   * // Match an object of url components.
+   * match = pattern.exec({ pathname: "/books/123" });
+   * console.log(match.pathname.groups.id); // 123
+   * ```
+   */
+  exec(input: URLPatternInput, baseURL?: string): URLPatternResult | null;
+
+  /** The pattern string for the `protocol`. */
+  readonly protocol: string;
+  /** The pattern string for the `username`. */
+  readonly username: string;
+  /** The pattern string for the `password`. */
+  readonly password: string;
+  /** The pattern string for the `hostname`. */
+  readonly hostname: string;
+  /** The pattern string for the `port`. */
+  readonly port: string;
+  /** The pattern string for the `pathname`. */
+  readonly pathname: string;
+  /** The pattern string for the `search`. */
+  readonly search: string;
+  /** The pattern string for the `hash`. */
+  readonly hash: string;
+}