diff --git a/packages/puppeteer-core/src/common/HTTPRequest.ts b/packages/puppeteer-core/src/common/HTTPRequest.ts
index 5150c7db3ea..7eeee5ee239 100644
--- a/packages/puppeteer-core/src/common/HTTPRequest.ts
+++ b/packages/puppeteer-core/src/common/HTTPRequest.ts
@@ -192,26 +192,6 @@ export class HTTPRequest extends BaseHTTPRequest {
     return this._redirectChain.slice();
   }
 
-  /**
-   * Access information about the request's failure.
-   *
-   * @remarks
-   *
-   * @example
-   *
-   * Example of logging all failed requests:
-   *
-   * ```ts
-   * page.on('requestfailed', request => {
-   *   console.log(request.url() + ' ' + request.failure().errorText);
-   * });
-   * ```
-   *
-   * @returns `null` unless the request failed. If the request fails this can
-   * return an object with `errorText` containing a human-readable error
-   * message, e.g. `net::ERR_FAILED`. It is not guaranteed that there will be
-   * failure text if the request fails.
-   */
   override failure(): {errorText: string} | null {
     if (!this._failureText) {
       return null;
@@ -221,35 +201,6 @@ export class HTTPRequest extends BaseHTTPRequest {
     };
   }
 
-  /**
-   * Continues request with optional request overrides.
-   *
-   * @remarks
-   *
-   * To use this, request
-   * interception should be enabled with {@link Page.setRequestInterception}.
-   *
-   * Exception is immediately thrown if the request interception is not enabled.
-   *
-   * @example
-   *
-   * ```ts
-   * await page.setRequestInterception(true);
-   * page.on('request', request => {
-   *   // Override headers
-   *   const headers = Object.assign({}, request.headers(), {
-   *     foo: 'bar', // set "foo" header
-   *     origin: undefined, // remove "origin" header
-   *   });
-   *   request.continue({headers});
-   * });
-   * ```
-   *
-   * @param overrides - optional overrides to apply to the request.
-   * @param priority - If provided, intercept is resolved using
-   * cooperative handling rules. Otherwise, intercept is resolved
-   * immediately.
-   */
   override async continue(
     overrides: ContinueRequestOverrides = {},
     priority?: number
diff --git a/packages/puppeteer-core/src/common/HTTPResponse.ts b/packages/puppeteer-core/src/common/HTTPResponse.ts
index c6a2d723767..a43aa17195e 100644
--- a/packages/puppeteer-core/src/common/HTTPResponse.ts
+++ b/packages/puppeteer-core/src/common/HTTPResponse.ts
@@ -19,6 +19,7 @@ import {
   HTTPResponse as BaseHTTPResponse,
   RemoteAddress,
 } from '../api/HTTPResponse.js';
+import {createDeferredPromise} from '../util/DeferredPromise.js';
 
 import {CDPSession} from './Connection.js';
 import {ProtocolError} from './Errors.js';
@@ -33,8 +34,7 @@ export class HTTPResponse extends BaseHTTPResponse {
   #client: CDPSession;
   #request: HTTPRequest;
   #contentPromise: Promise<Buffer> | null = null;
-  #bodyLoadedPromise: Promise<Error | void>;
-  #bodyLoadedPromiseFulfill: (err: Error | void) => void = () => {};
+  #bodyLoadedPromise = createDeferredPromise<Error | void>();
   #remoteAddress: RemoteAddress;
   #status: number;
   #statusText: string;
@@ -55,10 +55,6 @@ export class HTTPResponse extends BaseHTTPResponse {
     this.#client = client;
     this.#request = request;
 
-    this.#bodyLoadedPromise = new Promise(fulfill => {
-      this.#bodyLoadedPromiseFulfill = fulfill;
-    });
-
     this.#remoteAddress = {
       ip: responsePayload.remoteIPAddress,
       port: responsePayload.remotePort,
@@ -105,9 +101,9 @@ export class HTTPResponse extends BaseHTTPResponse {
 
   override _resolveBody(err: Error | null): void {
     if (err) {
-      return this.#bodyLoadedPromiseFulfill(err);
+      return this.#bodyLoadedPromise.resolve(err);
     }
-    return this.#bodyLoadedPromiseFulfill();
+    return this.#bodyLoadedPromise.resolve();
   }
 
   override remoteAddress(): RemoteAddress {
diff --git a/packages/puppeteer-core/src/common/LifecycleWatcher.ts b/packages/puppeteer-core/src/common/LifecycleWatcher.ts
index a63c4407fbf..06899eb0e98 100644
--- a/packages/puppeteer-core/src/common/LifecycleWatcher.ts
+++ b/packages/puppeteer-core/src/common/LifecycleWatcher.ts
@@ -74,27 +74,10 @@ export class LifecycleWatcher {
   #eventListeners: PuppeteerEventListener[];
   #initialLoaderId: string;
 
-  #sameDocumentNavigationCompleteCallback: (x?: Error) => void = noop;
-  #sameDocumentNavigationPromise = new Promise<Error | undefined>(fulfill => {
-    this.#sameDocumentNavigationCompleteCallback = fulfill;
-  });
-
-  #lifecycleCallback: () => void = noop;
-  #lifecyclePromise: Promise<void> = new Promise(fulfill => {
-    this.#lifecycleCallback = fulfill;
-  });
-
-  #newDocumentNavigationCompleteCallback: (x?: Error) => void = noop;
-  #newDocumentNavigationPromise: Promise<Error | undefined> = new Promise(
-    fulfill => {
-      this.#newDocumentNavigationCompleteCallback = fulfill;
-    }
-  );
-
-  #terminationCallback: (x?: Error) => void = noop;
-  #terminationPromise: Promise<Error | undefined> = new Promise(fulfill => {
-    this.#terminationCallback = fulfill;
-  });
+  #sameDocumentNavigationPromise = createDeferredPromise<Error | undefined>();
+  #lifecyclePromise = createDeferredPromise<void>();
+  #newDocumentNavigationPromise = createDeferredPromise<Error | undefined>();
+  #terminationPromise = createDeferredPromise<Error | undefined>();
 
   #timeoutPromise: Promise<TimeoutError | undefined>;
 
@@ -211,8 +194,7 @@ export class LifecycleWatcher {
 
   #onFrameDetached(frame: Frame): void {
     if (this.#frame === frame) {
-      this.#terminationCallback.call(
-        null,
+      this.#terminationPromise.resolve(
         new Error('Navigating frame was detached')
       );
       return;
@@ -227,7 +209,7 @@ export class LifecycleWatcher {
   }
 
   #terminate(error: Error): void {
-    this.#terminationCallback.call(null, error);
+    this.#terminationPromise.resolve(error);
   }
 
   sameDocumentNavigationPromise(): Promise<Error | undefined> {
@@ -286,12 +268,12 @@ export class LifecycleWatcher {
     if (!checkLifecycle(this.#frame, this.#expectedLifecycle)) {
       return;
     }
-    this.#lifecycleCallback();
+    this.#lifecyclePromise.resolve();
     if (this.#hasSameDocumentNavigation) {
-      this.#sameDocumentNavigationCompleteCallback();
+      this.#sameDocumentNavigationPromise.resolve(undefined);
     }
     if (this.#swapped || this.#frame._loaderId !== this.#initialLoaderId) {
-      this.#newDocumentNavigationCompleteCallback();
+      this.#newDocumentNavigationPromise.resolve(undefined);
     }
 
     function checkLifecycle(