diff --git a/README.md b/README.md
index 18c43e98..6a35796c 100644
--- a/README.md
+++ b/README.md
@@ -264,10 +264,12 @@ Performs the Web IDL conversion algorithm for this interface, converting _value_
 
 In practice, this means doing a type-check equivalent to `is(value)`, and if it passes, returns the corresponding impl. If the type-check fails, it throws an informative exception. _context_ can be used to describe the provided value in any resulting error message.
 
-#### `install(globalObject)`
+#### `install(globalObject, globalNames)`
 
 This method creates a brand new wrapper constructor and prototype and attach it to the passed `globalObject`. It also registers the created constructor with the `globalObject`'s global constructor registry, which makes `create()`, `createImpl()`, and `setup()` work. (Thus, it is important to invoke `install()` before invoking those methods, as otherwise they will throw.)
 
+The second argument `globalNames` is an array containing the [global names](https://heycam.github.io/webidl/#dfn-global-name) of the interface that `globalObject` implements. This is used for the purposes of deciding which interfaces are [exposed](https://heycam.github.io/webidl/#dfn-exposed). For example, this array should be `["Window"]` for a [`Window`](https://html.spec.whatwg.org/multipage/window-object.html#window) global object. But for a [`DedicatedWorkerGlobalScope`](https://html.spec.whatwg.org/multipage/workers.html#dedicatedworkerglobalscope) global object, this array should be `["Worker", "DedicatedWorker"]`. Note that we do not yet implement [`[SecureContext]`](https://heycam.github.io/webidl/#SecureContext), so the "exposed" check is not fully implemented.
+
 #### `create(globalObject, constructorArgs, privateData)`
 
 Creates a new instance of the wrapper class and corresponding implementation class, passing in the `globalObject`, the `constructorArgs` array and `privateData` object to the implementation class constructor. Then returns the wrapper class.
@@ -454,6 +456,7 @@ webidl2js is implementing an ever-growing subset of the Web IDL specification. S
 - Variadic arguments
 - `[Clamp]`
 - `[EnforceRange]`
+- `[Exposed]`
 - `[LegacyArrayClass]`
 - `[LegacyUnenumerableNamedProperties]`
 - `[LegacyWindowAlias]`
@@ -478,7 +481,6 @@ Notable missing features include:
 - `[AllowShared]`
 - `[Default]` (for `toJSON()` operations)
 - `[Global]`'s various consequences, including the named properties object and `[[SetPrototypeOf]]`
-- `[Exposed]`
 - `[LenientSetter]`
 - `[LenientThis]`
 - `[NamedConstructor]`
diff --git a/lib/constructs/callback-interface.js b/lib/constructs/callback-interface.js
index 6c20c5b6..0c5e6cd5 100644
--- a/lib/constructs/callback-interface.js
+++ b/lib/constructs/callback-interface.js
@@ -20,6 +20,25 @@ class CallbackInterface {
 
     this._analyzed = false;
     this._outputStaticProperties = new Map();
+
+    const exposed = utils.getExtAttr(this.idl.extAttrs, "Exposed");
+    if (this.idl.members.some(member => member.type === "const") && !exposed) {
+      throw new Error(`Callback interface ${this.name} with defined constants lacks the [Exposed] extended attribute`);
+    }
+
+    if (exposed) {
+      if (!exposed.rhs || (exposed.rhs.type !== "identifier" && exposed.rhs.type !== "identifier-list")) {
+        throw new Error(`[Exposed] must take an identifier or an identifier list in callback interface ${this.name}`);
+      }
+
+      if (exposed.rhs.type === "identifier") {
+        this.exposed = new Set([exposed.rhs.value]);
+      } else {
+        this.exposed = new Set(exposed.rhs.value.map(token => token.value));
+      }
+    } else {
+      this.exposed = new Set();
+    }
   }
 
   _analyzeMembers() {
@@ -178,14 +197,24 @@ class CallbackInterface {
   }
 
   generateInstall() {
+    if (this.constants.size > 0) {
+      this.str += `
+        const exposed = new Set(${JSON.stringify([...this.exposed])});
+      `;
+    }
+
     this.str += `
-      exports.install = function install(globalObject) {
+      exports.install = (globalObject, globalNames) => {
     `;
 
     if (this.constants.size > 0) {
       const { name } = this;
 
       this.str += `
+        if (!globalNames.some(globalName => exposed.has(globalName))) {
+          return;
+        }
+
         const ${name} = () => {
           throw new TypeError("Illegal invocation");
         };
@@ -234,4 +263,6 @@ class CallbackInterface {
   }
 }
 
+CallbackInterface.prototype.type = "callback interface";
+
 module.exports = CallbackInterface;
diff --git a/lib/constructs/interface.js b/lib/constructs/interface.js
index 34c073c0..e28aa171 100644
--- a/lib/constructs/interface.js
+++ b/lib/constructs/interface.js
@@ -1463,7 +1463,12 @@ class Interface {
     const { idl, name } = this;
 
     this.str += `
-      exports.install = (globalObject, globalName) => {
+      const exposed = new Set(${JSON.stringify([...this.exposed])});
+
+      exports.install = (globalObject, globalNames) => {
+        if (!globalNames.some(globalName => exposed.has(globalName))) {
+          return;
+        }
     `;
 
     if (idl.inheritance) {
@@ -1500,7 +1505,7 @@ class Interface {
 
       if (this.legacyWindowAliases) {
         this.str += `
-          if (globalName === "Window") {
+          if (globalNames.includes("Window")) {
         `;
 
         for (const legacyWindowAlias of this.legacyWindowAliases) {
diff --git a/test/__snapshots__/test.js.snap b/test/__snapshots__/test.js.snap
index 2d915d7d..87638119 100644
--- a/test/__snapshots__/test.js.snap
+++ b/test/__snapshots__/test.js.snap
@@ -48,7 +48,7 @@ exports.convert = function convert(value, { context = \\"The provided value\\" }
   return callTheUserObjectsOperation;
 };
 
-exports.install = function install(globalObject) {};
+exports.install = (globalObject, globalNames) => {};
 "
 `;
 
@@ -111,7 +111,12 @@ exports.setup = function setup(obj, globalObject, constructorArgs = [], privateD
   return obj;
 };
 
-exports.install = (globalObject, globalName) => {
+const exposed = new Set([\\"Window\\"]);
+
+exports.install = (globalObject, globalNames) => {
+  if (!globalNames.some(globalName => exposed.has(globalName))) {
+    return;
+  }
   class BufferSourceTypes {
     constructor() {
       throw new TypeError(\\"Illegal constructor\\");
@@ -368,7 +373,12 @@ exports.setup = function setup(obj, globalObject, constructorArgs = [], privateD
   return obj;
 };
 
-exports.install = (globalObject, globalName) => {
+const exposed = new Set([\\"Window\\"]);
+
+exports.install = (globalObject, globalNames) => {
+  if (!globalNames.some(globalName => exposed.has(globalName))) {
+    return;
+  }
   class CEReactions {
     constructor() {
       throw new TypeError(\\"Illegal constructor\\");
@@ -702,7 +712,12 @@ exports.setup = function setup(obj, globalObject, constructorArgs = [], privateD
   return obj;
 };
 
-exports.install = (globalObject, globalName) => {
+const exposed = new Set([\\"Window\\"]);
+
+exports.install = (globalObject, globalNames) => {
+  if (!globalNames.some(globalName => exposed.has(globalName))) {
+    return;
+  }
   class DOMImplementation {
     constructor() {
       throw new TypeError(\\"Illegal constructor\\");
@@ -904,7 +919,12 @@ exports.setup = function setup(obj, globalObject, constructorArgs = [], privateD
   return obj;
 };
 
-exports.install = (globalObject, globalName) => {
+const exposed = new Set([\\"Window\\", \\"Worker\\"]);
+
+exports.install = (globalObject, globalNames) => {
+  if (!globalNames.some(globalName => exposed.has(globalName))) {
+    return;
+  }
   class DOMRect {
     constructor() {
       const args = [];
@@ -1082,7 +1102,7 @@ exports.install = (globalObject, globalName) => {
     value: DOMRect
   });
 
-  if (globalName === \\"Window\\") {
+  if (globalNames.includes(\\"Window\\")) {
     Object.defineProperty(globalObject, \\"SVGRect\\", {
       configurable: true,
       writable: true,
@@ -1233,7 +1253,12 @@ exports.setup = function setup(obj, globalObject, constructorArgs = [], privateD
   return obj;
 };
 
-exports.install = (globalObject, globalName) => {
+const exposed = new Set([\\"Window\\"]);
+
+exports.install = (globalObject, globalNames) => {
+  if (!globalNames.some(globalName => exposed.has(globalName))) {
+    return;
+  }
   class DictionaryConvert {
     constructor() {
       throw new TypeError(\\"Illegal constructor\\");
@@ -1342,7 +1367,12 @@ exports.setup = function setup(obj, globalObject, constructorArgs = [], privateD
   return obj;
 };
 
-exports.install = (globalObject, globalName) => {
+const exposed = new Set([\\"Window\\"]);
+
+exports.install = (globalObject, globalNames) => {
+  if (!globalNames.some(globalName => exposed.has(globalName))) {
+    return;
+  }
   class Enum {
     constructor() {
       throw new TypeError(\\"Illegal constructor\\");
@@ -1449,7 +1479,7 @@ exports.convert = function convert(value, { context = \\"The provided value\\" }
   return callTheUserObjectsOperation;
 };
 
-exports.install = function install(globalObject) {};
+exports.install = (globalObject, globalNames) => {};
 "
 `;
 
@@ -1513,7 +1543,12 @@ exports.setup = function setup(obj, globalObject, constructorArgs = [], privateD
   return obj;
 };
 
-exports.install = (globalObject, globalName) => {
+const exposed = new Set([\\"Window\\", \\"Worker\\", \\"AudioWorklet\\"]);
+
+exports.install = (globalObject, globalNames) => {
+  if (!globalNames.some(globalName => exposed.has(globalName))) {
+    return;
+  }
   class EventTarget {
     constructor() {
       return exports.setup(Object.create(new.target.prototype), globalObject, undefined);
@@ -1732,7 +1767,12 @@ exports.setup = function setup(obj, globalObject, constructorArgs = [], privateD
   return obj;
 };
 
-exports.install = (globalObject, globalName) => {
+const exposed = new Set([\\"Global\\"]);
+
+exports.install = (globalObject, globalNames) => {
+  if (!globalNames.some(globalName => exposed.has(globalName))) {
+    return;
+  }
   class Global {
     constructor() {
       throw new TypeError(\\"Illegal constructor\\");
@@ -1832,7 +1872,12 @@ exports.setup = function setup(obj, globalObject, constructorArgs = [], privateD
   return obj;
 };
 
-exports.install = (globalObject, globalName) => {
+const exposed = new Set([\\"Window\\"]);
+
+exports.install = (globalObject, globalNames) => {
+  if (!globalNames.some(globalName => exposed.has(globalName))) {
+    return;
+  }
   class HTMLConstructor {
     constructor() {
       return HTMLConstructor_HTMLConstructor(globalObject, interfaceName);
@@ -1916,7 +1961,12 @@ exports.setup = function setup(obj, globalObject, constructorArgs = [], privateD
   return obj;
 };
 
-exports.install = (globalObject, globalName) => {
+const exposed = new Set([\\"Window\\"]);
+
+exports.install = (globalObject, globalNames) => {
+  if (!globalNames.some(globalName => exposed.has(globalName))) {
+    return;
+  }
   class LegacyArrayClass {
     constructor() {
       throw new TypeError(\\"Illegal constructor\\");
@@ -2012,7 +2062,12 @@ exports.setup = function setup(obj, globalObject, constructorArgs = [], privateD
   return obj;
 };
 
-exports.install = (globalObject, globalName) => {
+const exposed = new Set([\\"Window\\"]);
+
+exports.install = (globalObject, globalNames) => {
+  if (!globalNames.some(globalName => exposed.has(globalName))) {
+    return;
+  }
   class MixedIn {
     constructor() {
       throw new TypeError(\\"Illegal constructor\\");
@@ -2152,7 +2207,13 @@ exports.convert = function convert(value, { context = \\"The provided value\\" }
   return callTheUserObjectsOperation;
 };
 
-exports.install = function install(globalObject) {
+const exposed = new Set([\\"Window\\"]);
+
+exports.install = (globalObject, globalNames) => {
+  if (!globalNames.some(globalName => exposed.has(globalName))) {
+    return;
+  }
+
   const NodeFilter = () => {
     throw new TypeError(\\"Illegal invocation\\");
   };
@@ -2245,7 +2306,12 @@ exports.setup = function setup(obj, globalObject, constructorArgs = [], privateD
   return obj;
 };
 
-exports.install = (globalObject, globalName) => {
+const exposed = new Set([\\"Window\\"]);
+
+exports.install = (globalObject, globalNames) => {
+  if (!globalNames.some(globalName => exposed.has(globalName))) {
+    return;
+  }
   class Overloads {
     constructor() {
       const args = [];
@@ -2639,7 +2705,12 @@ exports.setup = function setup(obj, globalObject, constructorArgs = [], privateD
   return obj;
 };
 
-exports.install = (globalObject, globalName) => {
+const exposed = new Set([\\"Window\\"]);
+
+exports.install = (globalObject, globalNames) => {
+  if (!globalNames.some(globalName => exposed.has(globalName))) {
+    return;
+  }
   class PromiseTypes {
     constructor() {
       throw new TypeError(\\"Illegal constructor\\");
@@ -2782,7 +2853,12 @@ exports.setup = function setup(obj, globalObject, constructorArgs = [], privateD
   return obj;
 };
 
-exports.install = (globalObject, globalName) => {
+const exposed = new Set([\\"Window\\"]);
+
+exports.install = (globalObject, globalNames) => {
+  if (!globalNames.some(globalName => exposed.has(globalName))) {
+    return;
+  }
   class Reflect {
     constructor() {
       throw new TypeError(\\"Illegal constructor\\");
@@ -3089,7 +3165,12 @@ exports.setup = function setup(obj, globalObject, constructorArgs = [], privateD
   return obj;
 };
 
-exports.install = (globalObject, globalName) => {
+const exposed = new Set([\\"Window\\"]);
+
+exports.install = (globalObject, globalNames) => {
+  if (!globalNames.some(globalName => exposed.has(globalName))) {
+    return;
+  }
   class SeqAndRec {
     constructor() {
       return exports.setup(Object.create(new.target.prototype), globalObject, undefined);
@@ -3378,7 +3459,12 @@ exports.setup = function setup(obj, globalObject, constructorArgs = [], privateD
   return obj;
 };
 
-exports.install = (globalObject, globalName) => {
+const exposed = new Set([\\"Window\\"]);
+
+exports.install = (globalObject, globalNames) => {
+  if (!globalNames.some(globalName => exposed.has(globalName))) {
+    return;
+  }
   class Static {
     constructor() {
       throw new TypeError(\\"Illegal constructor\\");
@@ -3514,7 +3600,12 @@ exports.setup = function setup(obj, globalObject, constructorArgs = [], privateD
   return obj;
 };
 
-exports.install = (globalObject, globalName) => {
+const exposed = new Set([\\"Window\\"]);
+
+exports.install = (globalObject, globalNames) => {
+  if (!globalNames.some(globalName => exposed.has(globalName))) {
+    return;
+  }
   class Storage {
     constructor() {
       throw new TypeError(\\"Illegal constructor\\");
@@ -3874,7 +3965,12 @@ exports.setup = function setup(obj, globalObject, constructorArgs = [], privateD
   return obj;
 };
 
-exports.install = (globalObject, globalName) => {
+const exposed = new Set([\\"Window\\"]);
+
+exports.install = (globalObject, globalNames) => {
+  if (!globalNames.some(globalName => exposed.has(globalName))) {
+    return;
+  }
   class StringifierAttribute {
     constructor() {
       throw new TypeError(\\"Illegal constructor\\");
@@ -3981,7 +4077,12 @@ exports.setup = function setup(obj, globalObject, constructorArgs = [], privateD
   return obj;
 };
 
-exports.install = (globalObject, globalName) => {
+const exposed = new Set([\\"Window\\"]);
+
+exports.install = (globalObject, globalNames) => {
+  if (!globalNames.some(globalName => exposed.has(globalName))) {
+    return;
+  }
   class StringifierDefaultOperation {
     constructor() {
       throw new TypeError(\\"Illegal constructor\\");
@@ -4077,7 +4178,12 @@ exports.setup = function setup(obj, globalObject, constructorArgs = [], privateD
   return obj;
 };
 
-exports.install = (globalObject, globalName) => {
+const exposed = new Set([\\"Window\\"]);
+
+exports.install = (globalObject, globalNames) => {
+  if (!globalNames.some(globalName => exposed.has(globalName))) {
+    return;
+  }
   class StringifierNamedOperation {
     constructor() {
       throw new TypeError(\\"Illegal constructor\\");
@@ -4181,7 +4287,12 @@ exports.setup = function setup(obj, globalObject, constructorArgs = [], privateD
   return obj;
 };
 
-exports.install = (globalObject, globalName) => {
+const exposed = new Set([\\"Window\\"]);
+
+exports.install = (globalObject, globalNames) => {
+  if (!globalNames.some(globalName => exposed.has(globalName))) {
+    return;
+  }
   class StringifierOperation {
     constructor() {
       throw new TypeError(\\"Illegal constructor\\");
@@ -4277,7 +4388,12 @@ exports.setup = function setup(obj, globalObject, constructorArgs = [], privateD
   return obj;
 };
 
-exports.install = (globalObject, globalName) => {
+const exposed = new Set([\\"Window\\"]);
+
+exports.install = (globalObject, globalNames) => {
+  if (!globalNames.some(globalName => exposed.has(globalName))) {
+    return;
+  }
   class TypedefsAndUnions {
     constructor() {
       throw new TypeError(\\"Illegal constructor\\");
@@ -4792,7 +4908,12 @@ exports.setup = function setup(obj, globalObject, constructorArgs = [], privateD
   return obj;
 };
 
-exports.install = (globalObject, globalName) => {
+const exposed = new Set([\\"Window\\", \\"Worker\\"]);
+
+exports.install = (globalObject, globalNames) => {
+  if (!globalNames.some(globalName => exposed.has(globalName))) {
+    return;
+  }
   class URL {
     constructor(url) {
       if (arguments.length < 1) {
@@ -5114,7 +5235,7 @@ exports.install = (globalObject, globalName) => {
     value: URL
   });
 
-  if (globalName === \\"Window\\") {
+  if (globalNames.includes(\\"Window\\")) {
     Object.defineProperty(globalObject, \\"webkitURL\\", {
       configurable: true,
       writable: true,
@@ -5188,7 +5309,12 @@ exports.setup = function setup(obj, globalObject, constructorArgs = [], privateD
   return obj;
 };
 
-exports.install = (globalObject, globalName) => {
+const exposed = new Set([\\"Window\\"]);
+
+exports.install = (globalObject, globalNames) => {
+  if (!globalNames.some(globalName => exposed.has(globalName))) {
+    return;
+  }
   class URLList {
     constructor() {
       throw new TypeError(\\"Illegal constructor\\");
@@ -5519,7 +5645,12 @@ exports.setup = function setup(obj, globalObject, constructorArgs = [], privateD
   return obj;
 };
 
-exports.install = (globalObject, globalName) => {
+const exposed = new Set([\\"Window\\", \\"Worker\\"]);
+
+exports.install = (globalObject, globalNames) => {
+  if (!globalNames.some(globalName => exposed.has(globalName))) {
+    return;
+  }
   class URLSearchParams {
     constructor() {
       const args = [];
@@ -5920,7 +6051,12 @@ exports.setup = function setup(obj, globalObject, constructorArgs = [], privateD
   return obj;
 };
 
-exports.install = (globalObject, globalName) => {
+const exposed = new Set([\\"Window\\"]);
+
+exports.install = (globalObject, globalNames) => {
+  if (!globalNames.some(globalName => exposed.has(globalName))) {
+    return;
+  }
   class URLSearchParamsCollection {
     constructor() {
       throw new TypeError(\\"Illegal constructor\\");
@@ -6260,7 +6396,13 @@ exports.setup = function setup(obj, globalObject, constructorArgs = [], privateD
   return obj;
 };
 
-exports.install = (globalObject, globalName) => {
+const exposed = new Set([\\"Window\\"]);
+
+exports.install = (globalObject, globalNames) => {
+  if (!globalNames.some(globalName => exposed.has(globalName))) {
+    return;
+  }
+
   if (globalObject.URLSearchParamsCollection === undefined) {
     throw new Error(
       \\"Internal error: attempting to evaluate URLSearchParamsCollection2 before URLSearchParamsCollection\\"
@@ -6565,7 +6707,12 @@ exports.setup = function setup(obj, globalObject, constructorArgs = [], privateD
   return obj;
 };
 
-exports.install = (globalObject, globalName) => {
+const exposed = new Set([\\"Window\\"]);
+
+exports.install = (globalObject, globalNames) => {
+  if (!globalNames.some(globalName => exposed.has(globalName))) {
+    return;
+  }
   class UnderscoredProperties {
     constructor() {
       throw new TypeError(\\"Illegal constructor\\");
@@ -6834,7 +6981,12 @@ exports.setup = function setup(obj, globalObject, constructorArgs = [], privateD
   return obj;
 };
 
-exports.install = (globalObject, globalName) => {
+const exposed = new Set([\\"Window\\"]);
+
+exports.install = (globalObject, globalNames) => {
+  if (!globalNames.some(globalName => exposed.has(globalName))) {
+    return;
+  }
   class Unforgeable {
     constructor() {
       throw new TypeError(\\"Illegal constructor\\");
@@ -6937,7 +7089,12 @@ exports.setup = function setup(obj, globalObject, constructorArgs = [], privateD
   return obj;
 };
 
-exports.install = (globalObject, globalName) => {
+const exposed = new Set([\\"Window\\"]);
+
+exports.install = (globalObject, globalNames) => {
+  if (!globalNames.some(globalName => exposed.has(globalName))) {
+    return;
+  }
   class UnforgeableMap {
     constructor() {
       throw new TypeError(\\"Illegal constructor\\");
@@ -7196,7 +7353,12 @@ exports.setup = function setup(obj, globalObject, constructorArgs = [], privateD
   return obj;
 };
 
-exports.install = (globalObject, globalName) => {
+const exposed = new Set([\\"Window\\"]);
+
+exports.install = (globalObject, globalNames) => {
+  if (!globalNames.some(globalName => exposed.has(globalName))) {
+    return;
+  }
   class Unscopable {
     constructor() {
       throw new TypeError(\\"Illegal constructor\\");
@@ -7335,7 +7497,12 @@ exports.setup = function setup(obj, globalObject, constructorArgs = [], privateD
   return obj;
 };
 
-exports.install = (globalObject, globalName) => {
+const exposed = new Set([\\"Window\\"]);
+
+exports.install = (globalObject, globalNames) => {
+  if (!globalNames.some(globalName => exposed.has(globalName))) {
+    return;
+  }
   class Variadic {
     constructor() {
       throw new TypeError(\\"Illegal constructor\\");
@@ -7574,7 +7741,12 @@ exports.setup = function setup(obj, globalObject, constructorArgs = [], privateD
   return obj;
 };
 
-exports.install = (globalObject, globalName) => {
+const exposed = new Set([\\"Window\\"]);
+
+exports.install = (globalObject, globalNames) => {
+  if (!globalNames.some(globalName => exposed.has(globalName))) {
+    return;
+  }
   class ZeroArgConstructor {
     constructor() {
       return exports.setup(Object.create(new.target.prototype), globalObject, undefined);
@@ -7647,7 +7819,7 @@ exports.convert = function convert(value, { context = \\"The provided value\\" }
   return callTheUserObjectsOperation;
 };
 
-exports.install = function install(globalObject) {};
+exports.install = (globalObject, globalNames) => {};
 "
 `;
 
@@ -7710,7 +7882,12 @@ exports.setup = function setup(obj, globalObject, constructorArgs = [], privateD
   return obj;
 };
 
-exports.install = (globalObject, globalName) => {
+const exposed = new Set([\\"Window\\"]);
+
+exports.install = (globalObject, globalNames) => {
+  if (!globalNames.some(globalName => exposed.has(globalName))) {
+    return;
+  }
   class BufferSourceTypes {
     constructor() {
       throw new TypeError(\\"Illegal constructor\\");
@@ -7966,7 +8143,12 @@ exports.setup = function setup(obj, globalObject, constructorArgs = [], privateD
   return obj;
 };
 
-exports.install = (globalObject, globalName) => {
+const exposed = new Set([\\"Window\\"]);
+
+exports.install = (globalObject, globalNames) => {
+  if (!globalNames.some(globalName => exposed.has(globalName))) {
+    return;
+  }
   class CEReactions {
     constructor() {
       throw new TypeError(\\"Illegal constructor\\");
@@ -8270,7 +8452,12 @@ exports.setup = function setup(obj, globalObject, constructorArgs = [], privateD
   return obj;
 };
 
-exports.install = (globalObject, globalName) => {
+const exposed = new Set([\\"Window\\"]);
+
+exports.install = (globalObject, globalNames) => {
+  if (!globalNames.some(globalName => exposed.has(globalName))) {
+    return;
+  }
   class DOMImplementation {
     constructor() {
       throw new TypeError(\\"Illegal constructor\\");
@@ -8472,7 +8659,12 @@ exports.setup = function setup(obj, globalObject, constructorArgs = [], privateD
   return obj;
 };
 
-exports.install = (globalObject, globalName) => {
+const exposed = new Set([\\"Window\\", \\"Worker\\"]);
+
+exports.install = (globalObject, globalNames) => {
+  if (!globalNames.some(globalName => exposed.has(globalName))) {
+    return;
+  }
   class DOMRect {
     constructor() {
       const args = [];
@@ -8650,7 +8842,7 @@ exports.install = (globalObject, globalName) => {
     value: DOMRect
   });
 
-  if (globalName === \\"Window\\") {
+  if (globalNames.includes(\\"Window\\")) {
     Object.defineProperty(globalObject, \\"SVGRect\\", {
       configurable: true,
       writable: true,
@@ -8801,7 +8993,12 @@ exports.setup = function setup(obj, globalObject, constructorArgs = [], privateD
   return obj;
 };
 
-exports.install = (globalObject, globalName) => {
+const exposed = new Set([\\"Window\\"]);
+
+exports.install = (globalObject, globalNames) => {
+  if (!globalNames.some(globalName => exposed.has(globalName))) {
+    return;
+  }
   class DictionaryConvert {
     constructor() {
       throw new TypeError(\\"Illegal constructor\\");
@@ -8910,7 +9107,12 @@ exports.setup = function setup(obj, globalObject, constructorArgs = [], privateD
   return obj;
 };
 
-exports.install = (globalObject, globalName) => {
+const exposed = new Set([\\"Window\\"]);
+
+exports.install = (globalObject, globalNames) => {
+  if (!globalNames.some(globalName => exposed.has(globalName))) {
+    return;
+  }
   class Enum {
     constructor() {
       throw new TypeError(\\"Illegal constructor\\");
@@ -9017,7 +9219,7 @@ exports.convert = function convert(value, { context = \\"The provided value\\" }
   return callTheUserObjectsOperation;
 };
 
-exports.install = function install(globalObject) {};
+exports.install = (globalObject, globalNames) => {};
 "
 `;
 
@@ -9081,7 +9283,12 @@ exports.setup = function setup(obj, globalObject, constructorArgs = [], privateD
   return obj;
 };
 
-exports.install = (globalObject, globalName) => {
+const exposed = new Set([\\"Window\\", \\"Worker\\", \\"AudioWorklet\\"]);
+
+exports.install = (globalObject, globalNames) => {
+  if (!globalNames.some(globalName => exposed.has(globalName))) {
+    return;
+  }
   class EventTarget {
     constructor() {
       return exports.setup(Object.create(new.target.prototype), globalObject, undefined);
@@ -9300,7 +9507,12 @@ exports.setup = function setup(obj, globalObject, constructorArgs = [], privateD
   return obj;
 };
 
-exports.install = (globalObject, globalName) => {
+const exposed = new Set([\\"Global\\"]);
+
+exports.install = (globalObject, globalNames) => {
+  if (!globalNames.some(globalName => exposed.has(globalName))) {
+    return;
+  }
   class Global {
     constructor() {
       throw new TypeError(\\"Illegal constructor\\");
@@ -9399,7 +9611,12 @@ exports.setup = function setup(obj, globalObject, constructorArgs = [], privateD
   return obj;
 };
 
-exports.install = (globalObject, globalName) => {
+const exposed = new Set([\\"Window\\"]);
+
+exports.install = (globalObject, globalNames) => {
+  if (!globalNames.some(globalName => exposed.has(globalName))) {
+    return;
+  }
   class HTMLConstructor {
     constructor() {
       throw new TypeError(\\"Illegal constructor\\");
@@ -9483,7 +9700,12 @@ exports.setup = function setup(obj, globalObject, constructorArgs = [], privateD
   return obj;
 };
 
-exports.install = (globalObject, globalName) => {
+const exposed = new Set([\\"Window\\"]);
+
+exports.install = (globalObject, globalNames) => {
+  if (!globalNames.some(globalName => exposed.has(globalName))) {
+    return;
+  }
   class LegacyArrayClass {
     constructor() {
       throw new TypeError(\\"Illegal constructor\\");
@@ -9579,7 +9801,12 @@ exports.setup = function setup(obj, globalObject, constructorArgs = [], privateD
   return obj;
 };
 
-exports.install = (globalObject, globalName) => {
+const exposed = new Set([\\"Window\\"]);
+
+exports.install = (globalObject, globalNames) => {
+  if (!globalNames.some(globalName => exposed.has(globalName))) {
+    return;
+  }
   class MixedIn {
     constructor() {
       throw new TypeError(\\"Illegal constructor\\");
@@ -9719,7 +9946,13 @@ exports.convert = function convert(value, { context = \\"The provided value\\" }
   return callTheUserObjectsOperation;
 };
 
-exports.install = function install(globalObject) {
+const exposed = new Set([\\"Window\\"]);
+
+exports.install = (globalObject, globalNames) => {
+  if (!globalNames.some(globalName => exposed.has(globalName))) {
+    return;
+  }
+
   const NodeFilter = () => {
     throw new TypeError(\\"Illegal invocation\\");
   };
@@ -9812,7 +10045,12 @@ exports.setup = function setup(obj, globalObject, constructorArgs = [], privateD
   return obj;
 };
 
-exports.install = (globalObject, globalName) => {
+const exposed = new Set([\\"Window\\"]);
+
+exports.install = (globalObject, globalNames) => {
+  if (!globalNames.some(globalName => exposed.has(globalName))) {
+    return;
+  }
   class Overloads {
     constructor() {
       const args = [];
@@ -10206,7 +10444,12 @@ exports.setup = function setup(obj, globalObject, constructorArgs = [], privateD
   return obj;
 };
 
-exports.install = (globalObject, globalName) => {
+const exposed = new Set([\\"Window\\"]);
+
+exports.install = (globalObject, globalNames) => {
+  if (!globalNames.some(globalName => exposed.has(globalName))) {
+    return;
+  }
   class PromiseTypes {
     constructor() {
       throw new TypeError(\\"Illegal constructor\\");
@@ -10348,7 +10591,12 @@ exports.setup = function setup(obj, globalObject, constructorArgs = [], privateD
   return obj;
 };
 
-exports.install = (globalObject, globalName) => {
+const exposed = new Set([\\"Window\\"]);
+
+exports.install = (globalObject, globalNames) => {
+  if (!globalNames.some(globalName => exposed.has(globalName))) {
+    return;
+  }
   class Reflect {
     constructor() {
       throw new TypeError(\\"Illegal constructor\\");
@@ -10641,7 +10889,12 @@ exports.setup = function setup(obj, globalObject, constructorArgs = [], privateD
   return obj;
 };
 
-exports.install = (globalObject, globalName) => {
+const exposed = new Set([\\"Window\\"]);
+
+exports.install = (globalObject, globalNames) => {
+  if (!globalNames.some(globalName => exposed.has(globalName))) {
+    return;
+  }
   class SeqAndRec {
     constructor() {
       return exports.setup(Object.create(new.target.prototype), globalObject, undefined);
@@ -10930,7 +11183,12 @@ exports.setup = function setup(obj, globalObject, constructorArgs = [], privateD
   return obj;
 };
 
-exports.install = (globalObject, globalName) => {
+const exposed = new Set([\\"Window\\"]);
+
+exports.install = (globalObject, globalNames) => {
+  if (!globalNames.some(globalName => exposed.has(globalName))) {
+    return;
+  }
   class Static {
     constructor() {
       throw new TypeError(\\"Illegal constructor\\");
@@ -11066,7 +11324,12 @@ exports.setup = function setup(obj, globalObject, constructorArgs = [], privateD
   return obj;
 };
 
-exports.install = (globalObject, globalName) => {
+const exposed = new Set([\\"Window\\"]);
+
+exports.install = (globalObject, globalNames) => {
+  if (!globalNames.some(globalName => exposed.has(globalName))) {
+    return;
+  }
   class Storage {
     constructor() {
       throw new TypeError(\\"Illegal constructor\\");
@@ -11426,7 +11689,12 @@ exports.setup = function setup(obj, globalObject, constructorArgs = [], privateD
   return obj;
 };
 
-exports.install = (globalObject, globalName) => {
+const exposed = new Set([\\"Window\\"]);
+
+exports.install = (globalObject, globalNames) => {
+  if (!globalNames.some(globalName => exposed.has(globalName))) {
+    return;
+  }
   class StringifierAttribute {
     constructor() {
       throw new TypeError(\\"Illegal constructor\\");
@@ -11533,7 +11801,12 @@ exports.setup = function setup(obj, globalObject, constructorArgs = [], privateD
   return obj;
 };
 
-exports.install = (globalObject, globalName) => {
+const exposed = new Set([\\"Window\\"]);
+
+exports.install = (globalObject, globalNames) => {
+  if (!globalNames.some(globalName => exposed.has(globalName))) {
+    return;
+  }
   class StringifierDefaultOperation {
     constructor() {
       throw new TypeError(\\"Illegal constructor\\");
@@ -11629,7 +11902,12 @@ exports.setup = function setup(obj, globalObject, constructorArgs = [], privateD
   return obj;
 };
 
-exports.install = (globalObject, globalName) => {
+const exposed = new Set([\\"Window\\"]);
+
+exports.install = (globalObject, globalNames) => {
+  if (!globalNames.some(globalName => exposed.has(globalName))) {
+    return;
+  }
   class StringifierNamedOperation {
     constructor() {
       throw new TypeError(\\"Illegal constructor\\");
@@ -11733,7 +12011,12 @@ exports.setup = function setup(obj, globalObject, constructorArgs = [], privateD
   return obj;
 };
 
-exports.install = (globalObject, globalName) => {
+const exposed = new Set([\\"Window\\"]);
+
+exports.install = (globalObject, globalNames) => {
+  if (!globalNames.some(globalName => exposed.has(globalName))) {
+    return;
+  }
   class StringifierOperation {
     constructor() {
       throw new TypeError(\\"Illegal constructor\\");
@@ -11829,7 +12112,12 @@ exports.setup = function setup(obj, globalObject, constructorArgs = [], privateD
   return obj;
 };
 
-exports.install = (globalObject, globalName) => {
+const exposed = new Set([\\"Window\\"]);
+
+exports.install = (globalObject, globalNames) => {
+  if (!globalNames.some(globalName => exposed.has(globalName))) {
+    return;
+  }
   class TypedefsAndUnions {
     constructor() {
       throw new TypeError(\\"Illegal constructor\\");
@@ -12344,7 +12632,12 @@ exports.setup = function setup(obj, globalObject, constructorArgs = [], privateD
   return obj;
 };
 
-exports.install = (globalObject, globalName) => {
+const exposed = new Set([\\"Window\\", \\"Worker\\"]);
+
+exports.install = (globalObject, globalNames) => {
+  if (!globalNames.some(globalName => exposed.has(globalName))) {
+    return;
+  }
   class URL {
     constructor(url) {
       if (arguments.length < 1) {
@@ -12666,7 +12959,7 @@ exports.install = (globalObject, globalName) => {
     value: URL
   });
 
-  if (globalName === \\"Window\\") {
+  if (globalNames.includes(\\"Window\\")) {
     Object.defineProperty(globalObject, \\"webkitURL\\", {
       configurable: true,
       writable: true,
@@ -12740,7 +13033,12 @@ exports.setup = function setup(obj, globalObject, constructorArgs = [], privateD
   return obj;
 };
 
-exports.install = (globalObject, globalName) => {
+const exposed = new Set([\\"Window\\"]);
+
+exports.install = (globalObject, globalNames) => {
+  if (!globalNames.some(globalName => exposed.has(globalName))) {
+    return;
+  }
   class URLList {
     constructor() {
       throw new TypeError(\\"Illegal constructor\\");
@@ -13071,7 +13369,12 @@ exports.setup = function setup(obj, globalObject, constructorArgs = [], privateD
   return obj;
 };
 
-exports.install = (globalObject, globalName) => {
+const exposed = new Set([\\"Window\\", \\"Worker\\"]);
+
+exports.install = (globalObject, globalNames) => {
+  if (!globalNames.some(globalName => exposed.has(globalName))) {
+    return;
+  }
   class URLSearchParams {
     constructor() {
       const args = [];
@@ -13472,7 +13775,12 @@ exports.setup = function setup(obj, globalObject, constructorArgs = [], privateD
   return obj;
 };
 
-exports.install = (globalObject, globalName) => {
+const exposed = new Set([\\"Window\\"]);
+
+exports.install = (globalObject, globalNames) => {
+  if (!globalNames.some(globalName => exposed.has(globalName))) {
+    return;
+  }
   class URLSearchParamsCollection {
     constructor() {
       throw new TypeError(\\"Illegal constructor\\");
@@ -13812,7 +14120,13 @@ exports.setup = function setup(obj, globalObject, constructorArgs = [], privateD
   return obj;
 };
 
-exports.install = (globalObject, globalName) => {
+const exposed = new Set([\\"Window\\"]);
+
+exports.install = (globalObject, globalNames) => {
+  if (!globalNames.some(globalName => exposed.has(globalName))) {
+    return;
+  }
+
   if (globalObject.URLSearchParamsCollection === undefined) {
     throw new Error(
       \\"Internal error: attempting to evaluate URLSearchParamsCollection2 before URLSearchParamsCollection\\"
@@ -14117,7 +14431,12 @@ exports.setup = function setup(obj, globalObject, constructorArgs = [], privateD
   return obj;
 };
 
-exports.install = (globalObject, globalName) => {
+const exposed = new Set([\\"Window\\"]);
+
+exports.install = (globalObject, globalNames) => {
+  if (!globalNames.some(globalName => exposed.has(globalName))) {
+    return;
+  }
   class UnderscoredProperties {
     constructor() {
       throw new TypeError(\\"Illegal constructor\\");
@@ -14386,7 +14705,12 @@ exports.setup = function setup(obj, globalObject, constructorArgs = [], privateD
   return obj;
 };
 
-exports.install = (globalObject, globalName) => {
+const exposed = new Set([\\"Window\\"]);
+
+exports.install = (globalObject, globalNames) => {
+  if (!globalNames.some(globalName => exposed.has(globalName))) {
+    return;
+  }
   class Unforgeable {
     constructor() {
       throw new TypeError(\\"Illegal constructor\\");
@@ -14489,7 +14813,12 @@ exports.setup = function setup(obj, globalObject, constructorArgs = [], privateD
   return obj;
 };
 
-exports.install = (globalObject, globalName) => {
+const exposed = new Set([\\"Window\\"]);
+
+exports.install = (globalObject, globalNames) => {
+  if (!globalNames.some(globalName => exposed.has(globalName))) {
+    return;
+  }
   class UnforgeableMap {
     constructor() {
       throw new TypeError(\\"Illegal constructor\\");
@@ -14748,7 +15077,12 @@ exports.setup = function setup(obj, globalObject, constructorArgs = [], privateD
   return obj;
 };
 
-exports.install = (globalObject, globalName) => {
+const exposed = new Set([\\"Window\\"]);
+
+exports.install = (globalObject, globalNames) => {
+  if (!globalNames.some(globalName => exposed.has(globalName))) {
+    return;
+  }
   class Unscopable {
     constructor() {
       throw new TypeError(\\"Illegal constructor\\");
@@ -14887,7 +15221,12 @@ exports.setup = function setup(obj, globalObject, constructorArgs = [], privateD
   return obj;
 };
 
-exports.install = (globalObject, globalName) => {
+const exposed = new Set([\\"Window\\"]);
+
+exports.install = (globalObject, globalNames) => {
+  if (!globalNames.some(globalName => exposed.has(globalName))) {
+    return;
+  }
   class Variadic {
     constructor() {
       throw new TypeError(\\"Illegal constructor\\");
@@ -15126,7 +15465,12 @@ exports.setup = function setup(obj, globalObject, constructorArgs = [], privateD
   return obj;
 };
 
-exports.install = (globalObject, globalName) => {
+const exposed = new Set([\\"Window\\"]);
+
+exports.install = (globalObject, globalNames) => {
+  if (!globalNames.some(globalName => exposed.has(globalName))) {
+    return;
+  }
   class ZeroArgConstructor {
     constructor() {
       return exports.setup(Object.create(new.target.prototype), globalObject, undefined);