refactor: Move URL to op_crates/web (#7544)

1 files changed, 897 insertions, 0 deletions

diff --git a/op_crates/web/11_url.js b/op_crates/web/11_url.js
new file mode 100644
index 000000000..fb5bece25
--- /dev/null
+++ b/op_crates/web/11_url.js
@@ -0,0 +1,897 @@
+// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
+
+((window) => {
+  const core = window.Deno.core;
+
+  function requiredArguments(
+    name,
+    length,
+    required,
+  ) {
+    if (length < required) {
+      const errMsg = `${name} requires at least ${required} argument${
+        required === 1 ? "" : "s"
+      }, but only ${length} present`;
+      throw new TypeError(errMsg);
+    }
+  }
+
+  function isIterable(
+    o,
+  ) {
+    // checks for null and undefined
+    if (o == null) {
+      return false;
+    }
+    return (
+      typeof (o)[Symbol.iterator] === "function"
+    );
+  }
+
+  /** https://url.spec.whatwg.org/#idna */
+  function domainToAscii(
+    domain,
+    { beStrict = false } = {},
+  ) {
+    return core.jsonOpSync("op_domain_to_ascii", { domain, beStrict });
+  }
+
+  function decodeSearchParam(p) {
+    return decodeURIComponent(p.replace(/\+/g, " "));
+  }
+
+  const urls = new WeakMap();
+
+  class URLSearchParams {
+    #params = [];
+
+    constructor(init = "") {
+      if (typeof init === "string") {
+        this.#handleStringInitialization(init);
+        return;
+      }
+
+      if (Array.isArray(init) || isIterable(init)) {
+        this.#handleArrayInitialization(init);
+        return;
+      }
+
+      if (Object(init) !== init) {
+        return;
+      }
+
+      if (init instanceof URLSearchParams) {
+        this.#params = [...init.#params];
+        return;
+      }
+
+      // Overload: record<USVString, USVString>
+      for (const key of Object.keys(init)) {
+        this.#append(key, init[key]);
+      }
+
+      urls.set(this, null);
+    }
+
+    #handleStringInitialization = (init) => {
+      // Overload: USVString
+      // If init is a string and starts with U+003F (?),
+      // remove the first code point from init.
+      if (init.charCodeAt(0) === 0x003f) {
+        init = init.slice(1);
+      }
+
+      for (const pair of init.split("&")) {
+        // Empty params are ignored
+        if (pair.length === 0) {
+          continue;
+        }
+        const position = pair.indexOf("=");
+        const name = pair.slice(0, position === -1 ? pair.length : position);
+        const value = pair.slice(name.length + 1);
+        this.#append(decodeSearchParam(name), decodeSearchParam(value));
+      }
+    };
+
+    #handleArrayInitialization = (
+      init,
+    ) => {
+      // Overload: sequence<sequence<USVString>>
+      for (const tuple of init) {
+        // If pair does not contain exactly two items, then throw a TypeError.
+        if (tuple.length !== 2) {
+          throw new TypeError(
+            "URLSearchParams.constructor tuple array argument must only contain pair elements",
+          );
+        }
+        this.#append(tuple[0], tuple[1]);
+      }
+    };
+
+    #updateSteps = () => {
+      const url = urls.get(this);
+      if (url == null) {
+        return;
+      }
+      parts.get(url).query = this.toString();
+    };
+
+    #append = (name, value) => {
+      this.#params.push([String(name), String(value)]);
+    };
+
+    append(name, value) {
+      requiredArguments("URLSearchParams.append", arguments.length, 2);
+      this.#append(name, value);
+      this.#updateSteps();
+    }
+
+    delete(name) {
+      requiredArguments("URLSearchParams.delete", arguments.length, 1);
+      name = String(name);
+      let i = 0;
+      while (i < this.#params.length) {
+        if (this.#params[i][0] === name) {
+          this.#params.splice(i, 1);
+        } else {
+          i++;
+        }
+      }
+      this.#updateSteps();
+    }
+
+    getAll(name) {
+      requiredArguments("URLSearchParams.getAll", arguments.length, 1);
+      name = String(name);
+      const values = [];
+      for (const entry of this.#params) {
+        if (entry[0] === name) {
+          values.push(entry[1]);
+        }
+      }
+
+      return values;
+    }
+
+    get(name) {
+      requiredArguments("URLSearchParams.get", arguments.length, 1);
+      name = String(name);
+      for (const entry of this.#params) {
+        if (entry[0] === name) {
+          return entry[1];
+        }
+      }
+
+      return null;
+    }
+
+    has(name) {
+      requiredArguments("URLSearchParams.has", arguments.length, 1);
+      name = String(name);
+      return this.#params.some((entry) => entry[0] === name);
+    }
+
+    set(name, value) {
+      requiredArguments("URLSearchParams.set", arguments.length, 2);
+
+      // If there are any name-value pairs whose name is name, in list,
+      // set the value of the first such name-value pair to value
+      // and remove the others.
+      name = String(name);
+      value = String(value);
+      let found = false;
+      let i = 0;
+      while (i < this.#params.length) {
+        if (this.#params[i][0] === name) {
+          if (!found) {
+            this.#params[i][1] = value;
+            found = true;
+            i++;
+          } else {
+            this.#params.splice(i, 1);
+          }
+        } else {
+          i++;
+        }
+      }
+
+      // Otherwise, append a new name-value pair whose name is name
+      // and value is value, to list.
+      if (!found) {
+        this.#append(name, value);
+      }
+
+      this.#updateSteps();
+    }
+
+    sort() {
+      this.#params.sort((a, b) => (a[0] === b[0] ? 0 : a[0] > b[0] ? 1 : -1));
+      this.#updateSteps();
+    }
+
+    forEach(
+      callbackfn,
+      thisArg,
+    ) {
+      requiredArguments("URLSearchParams.forEach", arguments.length, 1);
+
+      if (typeof thisArg !== "undefined") {
+        callbackfn = callbackfn.bind(thisArg);
+      }
+
+      for (const [key, value] of this.#params) {
+        callbackfn(value, key, this);
+      }
+    }
+
+    *keys() {
+      for (const [key] of this.#params) {
+        yield key;
+      }
+    }
+
+    *values() {
+      for (const [, value] of this.#params) {
+        yield value;
+      }
+    }
+
+    *entries() {
+      yield* this.#params;
+    }
+
+    *[Symbol.iterator]() {
+      yield* this.#params;
+    }
+
+    toString() {
+      return this.#params
+        .map(
+          (tuple) =>
+            `${encodeSearchParam(tuple[0])}=${encodeSearchParam(tuple[1])}`,
+        )
+        .join("&");
+    }
+  }
+
+  const searchParamsMethods = [
+    "append",
+    "delete",
+    "set",
+  ];
+
+  const specialSchemes = ["ftp", "file", "http", "https", "ws", "wss"];
+
+  // https://url.spec.whatwg.org/#special-scheme
+  const schemePorts = {
+    ftp: "21",
+    file: "",
+    http: "80",
+    https: "443",
+    ws: "80",
+    wss: "443",
+  };
+  const MAX_PORT = 2 ** 16 - 1;
+
+  // Remove the part of the string that matches the pattern and return the
+  // remainder (RHS) as well as the first captured group of the matched substring
+  // (LHS). e.g.
+  //      takePattern("https://deno.land:80", /^([a-z]+):[/]{2}/)
+  //        = ["http", "deno.land:80"]
+  //      takePattern("deno.land:80", /^(\[[0-9a-fA-F.:]{2,}\]|[^:]+)/)
+  //        = ["deno.land", "80"]
+  function takePattern(string, pattern) {
+    let capture = "";
+    const rest = string.replace(pattern, (_, capture_) => {
+      capture = capture_;
+      return "";
+    });
+    return [capture, rest];
+  }
+
+  function parse(url, baseParts = null) {
+    const parts = {};
+    let restUrl;
+    let usedNonBase = false;
+    [parts.protocol, restUrl] = takePattern(
+      url.trim(),
+      /^([A-Za-z][+-.0-9A-Za-z]*):/,
+    );
+    parts.protocol = parts.protocol.toLowerCase();
+    if (parts.protocol == "") {
+      if (baseParts == null) {
+        return null;
+      }
+      parts.protocol = baseParts.protocol;
+    } else if (
+      parts.protocol != baseParts?.protocol ||
+      !specialSchemes.includes(parts.protocol)
+    ) {
+      usedNonBase = true;
+    }
+    const isSpecial = specialSchemes.includes(parts.protocol);
+    if (parts.protocol == "file") {
+      parts.slashes = "//";
+      parts.username = "";
+      parts.password = "";
+      if (usedNonBase || restUrl.match(/^[/\\]{2}/)) {
+        [parts.hostname, restUrl] = takePattern(
+          restUrl,
+          /^[/\\]{2}([^/\\?#]*)/,
+        );
+        usedNonBase = true;
+      } else {
+        parts.hostname = baseParts.hostname;
+      }
+      parts.port = "";
+    } else {
+      if (usedNonBase || restUrl.match(/^[/\\]{2}/)) {
+        let restAuthority;
+        if (isSpecial) {
+          parts.slashes = "//";
+          [restAuthority, restUrl] = takePattern(
+            restUrl,
+            /^[/\\]*([^/\\?#]*)/,
+          );
+        } else {
+          parts.slashes = restUrl.match(/^[/\\]{2}/) ? "//" : "";
+          [restAuthority, restUrl] = takePattern(
+            restUrl,
+            /^[/\\]{2}([^/\\?#]*)/,
+          );
+        }
+        let restAuthentication;
+        [restAuthentication, restAuthority] = takePattern(
+          restAuthority,
+          /^(.*)@/,
+        );
+        [parts.username, restAuthentication] = takePattern(
+          restAuthentication,
+          /^([^:]*)/,
+        );
+        parts.username = encodeUserinfo(parts.username);
+        [parts.password] = takePattern(restAuthentication, /^:(.*)/);
+        parts.password = encodeUserinfo(parts.password);
+        [parts.hostname, restAuthority] = takePattern(
+          restAuthority,
+          /^(\[[0-9a-fA-F.:]{2,}\]|[^:]+)/,
+        );
+        [parts.port] = takePattern(restAuthority, /^:(.*)/);
+        if (!isValidPort(parts.port)) {
+          return null;
+        }
+        if (parts.hostname == "" && isSpecial) {
+          return null;
+        }
+        usedNonBase = true;
+      } else {
+        parts.slashes = baseParts.slashes;
+        parts.username = baseParts.username;
+        parts.password = baseParts.password;
+        parts.hostname = baseParts.hostname;
+        parts.port = baseParts.port;
+      }
+    }
+    try {
+      parts.hostname = encodeHostname(parts.hostname, isSpecial);
+    } catch {
+      return null;
+    }
+    [parts.path, restUrl] = takePattern(restUrl, /^([^?#]*)/);
+    parts.path = encodePathname(parts.path.replace(/\\/g, "/"));
+    if (usedNonBase) {
+      parts.path = normalizePath(parts.path, parts.protocol == "file");
+    } else {
+      if (parts.path != "") {
+        usedNonBase = true;
+      }
+      parts.path = resolvePathFromBase(
+        parts.path,
+        baseParts.path || "/",
+        baseParts.protocol == "file",
+      );
+    }
+    // Drop the hostname if a drive letter is parsed.
+    if (parts.protocol == "file" && parts.path.match(/^\/+[A-Za-z]:(\/|$)/)) {
+      parts.hostname = "";
+    }
+    if (usedNonBase || restUrl.startsWith("?")) {
+      [parts.query, restUrl] = takePattern(restUrl, /^(\?[^#]*)/);
+      parts.query = encodeSearch(parts.query, isSpecial);
+      usedNonBase = true;
+    } else {
+      parts.query = baseParts.query;
+    }
+    [parts.hash] = takePattern(restUrl, /^(#.*)/);
+    parts.hash = encodeHash(parts.hash);
+    return parts;
+  }
+
+  // Resolves `.`s and `..`s where possible.
+  // Preserves repeating and trailing `/`s by design.
+  // Assumes drive letter file paths will have a leading slash.
+  function normalizePath(path, isFilePath) {
+    const isAbsolute = path.startsWith("/");
+    path = path.replace(/^\//, "");
+    const pathSegments = path.split("/");
+
+    let driveLetter = null;
+    if (isFilePath && pathSegments[0].match(/^[A-Za-z]:$/)) {
+      driveLetter = pathSegments.shift();
+    }
+
+    if (isFilePath && isAbsolute) {
+      while (pathSegments.length > 1 && pathSegments[0] == "") {
+        pathSegments.shift();
+      }
+    }
+
+    let ensureTrailingSlash = false;
+    const newPathSegments = [];
+    for (let i = 0; i < pathSegments.length; i++) {
+      const previous = newPathSegments[newPathSegments.length - 1];
+      if (
+        pathSegments[i] == ".." &&
+        previous != ".." &&
+        (previous != undefined || isAbsolute)
+      ) {
+        newPathSegments.pop();
+        ensureTrailingSlash = true;
+      } else if (pathSegments[i] == ".") {
+        ensureTrailingSlash = true;
+      } else {
+        newPathSegments.push(pathSegments[i]);
+        ensureTrailingSlash = false;
+      }
+    }
+    if (driveLetter != null) {
+      newPathSegments.unshift(driveLetter);
+    }
+    if (newPathSegments.length == 0 && !isAbsolute) {
+      newPathSegments.push(".");
+      ensureTrailingSlash = false;
+    }
+
+    let newPath = newPathSegments.join("/");
+    if (isAbsolute) {
+      newPath = `/${newPath}`;
+    }
+    if (ensureTrailingSlash) {
+      newPath = newPath.replace(/\/*$/, "/");
+    }
+    return newPath;
+  }
+
+  // Standard URL basing logic, applied to paths.
+  function resolvePathFromBase(path, basePath, isFilePath) {
+    let basePrefix;
+    let suffix;
+    const baseDriveLetter = basePath.match(/^\/+[A-Za-z]:(?=\/|$)/)?.[0];
+    if (isFilePath && path.match(/^\/+[A-Za-z]:(\/|$)/)) {
+      basePrefix = "";
+      suffix = path;
+    } else if (path.startsWith("/")) {
+      if (isFilePath && baseDriveLetter) {
+        basePrefix = baseDriveLetter;
+        suffix = path;
+      } else {
+        basePrefix = "";
+        suffix = path;
+      }
+    } else if (path != "") {
+      basePath = normalizePath(basePath, isFilePath);
+      path = normalizePath(path, isFilePath);
+      // Remove everything after the last `/` in `basePath`.
+      if (baseDriveLetter && isFilePath) {
+        basePrefix = `${baseDriveLetter}${
+          basePath.slice(baseDriveLetter.length).replace(/[^\/]*$/, "")
+        }`;
+      } else {
+        basePrefix = basePath.replace(/[^\/]*$/, "");
+      }
+      basePrefix = basePrefix.replace(/\/*$/, "/");
+      // If `normalizedPath` ends with `.` or `..`, add a trailing slash.
+      suffix = path.replace(/(?<=(^|\/)(\.|\.\.))$/, "/");
+    } else {
+      basePrefix = basePath;
+      suffix = "";
+    }
+    return normalizePath(basePrefix + suffix, isFilePath);
+  }
+
+  function isValidPort(value) {
+    // https://url.spec.whatwg.org/#port-state
+    if (value === "") return true;
+
+    const port = Number(value);
+    return Number.isInteger(port) && port >= 0 && port <= MAX_PORT;
+  }
+
+  const parts = new WeakMap();
+
+  class URL {
+    #searchParams = null;
+
+    [Symbol.for("Deno.customInspect")]() {
+      const keys = [
+        "href",
+        "origin",
+        "protocol",
+        "username",
+        "password",
+        "host",
+        "hostname",
+        "port",
+        "pathname",
+        "hash",
+        "search",
+      ];
+      const objectString = keys
+        .map((key) => `${key}: "${this[key] || ""}"`)
+        .join(", ");
+      return `URL { ${objectString} }`;
+    }
+
+    #updateSearchParams = () => {
+      const searchParams = new URLSearchParams(this.search);
+
+      for (const methodName of searchParamsMethods) {
+        const method = searchParams[methodName];
+        searchParams[methodName] = (...args) => {
+          method.apply(searchParams, args);
+          this.search = searchParams.toString();
+        };
+      }
+      this.#searchParams = searchParams;
+
+      urls.set(searchParams, this);
+    };
+
+    get hash() {
+      return parts.get(this).hash;
+    }
+
+    set hash(value) {
+      value = unescape(String(value));
+      if (!value) {
+        parts.get(this).hash = "";
+      } else {
+        if (value.charAt(0) !== "#") {
+          value = `#${value}`;
+        }
+        // hashes can contain % and # unescaped
+        parts.get(this).hash = encodeHash(value);
+      }
+    }
+
+    get host() {
+      return `${this.hostname}${this.port ? `:${this.port}` : ""}`;
+    }
+
+    set host(value) {
+      value = String(value);
+      const url = new URL(`http://${value}`);
+      parts.get(this).hostname = url.hostname;
+      parts.get(this).port = url.port;
+    }
+
+    get hostname() {
+      return parts.get(this).hostname;
+    }
+
+    set hostname(value) {
+      value = String(value);
+      try {
+        const isSpecial = specialSchemes.includes(parts.get(this).protocol);
+        parts.get(this).hostname = encodeHostname(value, isSpecial);
+      } catch {}
+    }
+
+    get href() {
+      const authentication = this.username || this.password
+        ? `${this.username}${this.password ? ":" + this.password : ""}@`
+        : "";
+      const host = this.host;
+      const slashes = host ? "//" : parts.get(this).slashes;
+      let pathname = this.pathname;
+      if (pathname.charAt(0) != "/" && pathname != "" && host != "") {
+        pathname = `/${pathname}`;
+      }
+      return `${this.protocol}${slashes}${authentication}${host}${pathname}${this.search}${this.hash}`;
+    }
+
+    set href(value) {
+      value = String(value);
+      if (value !== this.href) {
+        const url = new URL(value);
+        parts.set(this, { ...parts.get(url) });
+        this.#updateSearchParams();
+      }
+    }
+
+    get origin() {
+      if (this.host) {
+        return `${this.protocol}//${this.host}`;
+      }
+      return "null";
+    }
+
+    get password() {
+      return parts.get(this).password;
+    }
+
+    set password(value) {
+      value = String(value);
+      parts.get(this).password = encodeUserinfo(value);
+    }
+
+    get pathname() {
+      let path = parts.get(this).path;
+      if (specialSchemes.includes(parts.get(this).protocol)) {
+        if (path.charAt(0) != "/") {
+          path = `/${path}`;
+        }
+      }
+      return path;
+    }
+
+    set pathname(value) {
+      parts.get(this).path = encodePathname(String(value));
+    }
+
+    get port() {
+      const port = parts.get(this).port;
+      if (schemePorts[parts.get(this).protocol] === port) {
+        return "";
+      }
+
+      return port;
+    }
+
+    set port(value) {
+      if (!isValidPort(value)) {
+        return;
+      }
+      parts.get(this).port = value.toString();
+    }
+
+    get protocol() {
+      return `${parts.get(this).protocol}:`;
+    }
+
+    set protocol(value) {
+      value = String(value);
+      if (value) {
+        if (value.charAt(value.length - 1) === ":") {
+          value = value.slice(0, -1);
+        }
+        parts.get(this).protocol = encodeURIComponent(value);
+      }
+    }
+
+    get search() {
+      return parts.get(this).query;
+    }
+
+    set search(value) {
+      value = String(value);
+      const query = value == "" || value.charAt(0) == "?" ? value : `?${value}`;
+      const isSpecial = specialSchemes.includes(parts.get(this).protocol);
+      parts.get(this).query = encodeSearch(query, isSpecial);
+      this.#updateSearchParams();
+    }
+
+    get username() {
+      return parts.get(this).username;
+    }
+
+    set username(value) {
+      value = String(value);
+      parts.get(this).username = encodeUserinfo(value);
+    }
+
+    get searchParams() {
+      return this.#searchParams;
+    }
+
+    constructor(url, base) {
+      let baseParts = null;
+      new.target;
+      if (base) {
+        baseParts = base instanceof URL ? parts.get(base) : parse(base);
+        if (baseParts == null) {
+          throw new TypeError("Invalid base URL.");
+        }
+      }
+
+      const urlParts = url instanceof URL
+        ? parts.get(url)
+        : parse(url, baseParts);
+      if (urlParts == null) {
+        throw new TypeError("Invalid URL.");
+      }
+      parts.set(this, urlParts);
+
+      this.#updateSearchParams();
+    }
+
+    toString() {
+      return this.href;
+    }
+
+    toJSON() {
+      return this.href;
+    }
+
+    static createObjectURL() {
+      throw new Error("Not implemented");
+    }
+
+    static revokeObjectURL() {
+      throw new Error("Not implemented");
+    }
+  }
+
+  function parseIpv4Number(s) {
+    if (s.match(/^(0[Xx])[0-9A-Za-z]+$/)) {
+      return Number(s);
+    }
+    if (s.match(/^[0-9]+$/)) {
+      return Number(s.startsWith("0") ? `0o${s}` : s);
+    }
+    return NaN;
+  }
+
+  function parseIpv4(s) {
+    const parts = s.split(".");
+    if (parts[parts.length - 1] == "" && parts.length > 1) {
+      parts.pop();
+    }
+    if (parts.includes("") || parts.length > 4) {
+      return s;
+    }
+    const numbers = parts.map(parseIpv4Number);
+    if (numbers.includes(NaN)) {
+      return s;
+    }
+    const last = numbers.pop();
+    if (last >= 256 ** (4 - numbers.length) || numbers.find((n) => n >= 256)) {
+      throw new TypeError("Invalid hostname.");
+    }
+    const ipv4 = numbers.reduce((sum, n, i) => sum + n * 256 ** (3 - i), last);
+    const ipv4Hex = ipv4.toString(16).padStart(8, "0");
+    const ipv4HexParts = ipv4Hex.match(/(..)(..)(..)(..)$/).slice(1);
+    return ipv4HexParts.map((s) => String(Number(`0x${s}`))).join(".");
+  }
+
+  function charInC0ControlSet(c) {
+    return (c >= "\u0000" && c <= "\u001F") || c > "\u007E";
+  }
+
+  function charInSearchSet(c, isSpecial) {
+    // deno-fmt-ignore
+    return charInC0ControlSet(c) || ["\u0020", "\u0022", "\u0023", "\u003C", "\u003E"].includes(c) || isSpecial && c == "\u0027" || c > "\u007E";
+  }
+
+  function charInFragmentSet(c) {
+    // deno-fmt-ignore
+    return charInC0ControlSet(c) || ["\u0020", "\u0022", "\u003C", "\u003E", "\u0060"].includes(c);
+  }
+
+  function charInPathSet(c) {
+    // deno-fmt-ignore
+    return charInFragmentSet(c) || ["\u0023", "\u003F", "\u007B", "\u007D"].includes(c);
+  }
+
+  function charInUserinfoSet(c) {
+    // "\u0027" ("'") seemingly isn't in the spec, but matches Chrome and Firefox.
+    // deno-fmt-ignore
+    return charInPathSet(c) || ["\u0027", "\u002F", "\u003A", "\u003B", "\u003D", "\u0040", "\u005B", "\u005C", "\u005D", "\u005E", "\u007C"].includes(c);
+  }
+
+  function charIsForbiddenInHost(c) {
+    // deno-fmt-ignore
+    return ["\u0000", "\u0009", "\u000A", "\u000D", "\u0020", "\u0023", "\u0025", "\u002F", "\u003A", "\u003C", "\u003E", "\u003F", "\u0040", "\u005B", "\u005C", "\u005D", "\u005E"].includes(c);
+  }
+
+  function charInFormUrlencodedSet(c) {
+    // deno-fmt-ignore
+    return charInUserinfoSet(c) || ["\u0021", "\u0024", "\u0025", "\u0026", "\u0027", "\u0028", "\u0029", "\u002B", "\u002C", "\u007E"].includes(c);
+  }
+
+  const encoder = new TextEncoder();
+
+  function encodeChar(c) {
+    return [...encoder.encode(c)]
+      .map((n) => `%${n.toString(16)}`)
+      .join("")
+      .toUpperCase();
+  }
+
+  function encodeUserinfo(s) {
+    return [...s].map((c) => (charInUserinfoSet(c) ? encodeChar(c) : c)).join(
+      "",
+    );
+  }
+
+  function encodeHostname(s, isSpecial = true) {
+    // IPv6 parsing.
+    if (s.startsWith("[") && s.endsWith("]")) {
+      if (!s.match(/^\[[0-9A-Fa-f.:]{2,}\]$/)) {
+        throw new TypeError("Invalid hostname.");
+      }
+      // IPv6 address compress
+      return s.toLowerCase().replace(/\b:?(?:0+:?){2,}/, "::");
+    }
+
+    let result = s;
+
+    if (!isSpecial) {
+      // Check against forbidden host code points except for "%".
+      for (const c of result) {
+        if (charIsForbiddenInHost(c) && c != "\u0025") {
+          throw new TypeError("Invalid hostname.");
+        }
+      }
+
+      // Percent-encode C0 control set.
+      result = [...result]
+        .map((c) => (charInC0ControlSet(c) ? encodeChar(c) : c))
+        .join("");
+
+      return result;
+    }
+
+    // Percent-decode.
+    if (result.match(/%(?![0-9A-Fa-f]{2})/) != null) {
+      throw new TypeError("Invalid hostname.");
+    }
+    result = result.replace(
+      /%(.{2})/g,
+      (_, hex) => String.fromCodePoint(Number(`0x${hex}`)),
+    );
+
+    // IDNA domain to ASCII.
+    result = domainToAscii(result);
+
+    // Check against forbidden host code points.
+    for (const c of result) {
+      if (charIsForbiddenInHost(c)) {
+        throw new TypeError("Invalid hostname.");
+      }
+    }
+
+    // IPv4 parsing.
+    if (isSpecial) {
+      result = parseIpv4(result);
+    }
+
+    return result;
+  }
+
+  function encodePathname(s) {
+    return [...s].map((c) => (charInPathSet(c) ? encodeChar(c) : c)).join("");
+  }
+
+  function encodeSearch(s, isSpecial) {
+    return [...s].map((
+      c,
+    ) => (charInSearchSet(c, isSpecial) ? encodeChar(c) : c)).join("");
+  }
+
+  function encodeHash(s) {
+    return [...s].map((c) => (charInFragmentSet(c) ? encodeChar(c) : c)).join(
+      "",
+    );
+  }
+
+  function encodeSearchParam(s) {
+    return [...s].map((c) => (charInFormUrlencodedSet(c) ? encodeChar(c) : c))
+      .join("").replace(/%20/g, "+");
+  }
+
+  window.__bootstrap.url = {
+    URL,
+    URLSearchParams,
+  };
+})(this);