🤖 Merge PR DefinitelyTyped#73785 [chrome] update pageCapture namespace by @erwanjugand

Author: erwanjugand

types/chrome/index.d.ts

@@ -7587,15 +7587,11 @@ declare namespace chrome {
 
         /**
          * Saves the content of the tab with given id as MHTML.
-         * @param callback Called when the MHTML has been generated.
-         * Parameter mhtmlData: The MHTML data as a Blob.
-         */
-        export function saveAsMHTML(details: SaveDetails, callback: (mhtmlData?: Blob) => void): void;
-        /**
-         * Saves the content of the tab with given id as MHTML.
-         * @since Chrome 116 MV3
+         *
+         * Can return its result via Promise in Manifest V3 or later since Chrome 116.
          */
         export function saveAsMHTML(details: SaveDetails): Promise<Blob | undefined>;
+        export function saveAsMHTML(details: SaveDetails, callback: (mhtmlData?: Blob) => void): void;
     }
 
     ////////////////////

types/chrome/test/index.ts

@@ -4285,9 +4285,16 @@ function testI18n() {
     chrome.i18n.getUILanguage(); // $ExpectType string
 }
 
-async function testPageCapture() {
-    chrome.pageCapture.saveAsMHTML({ tabId: 0 }, (data: Blob | undefined) => {}); // $ExpectType void
-    await chrome.pageCapture.saveAsMHTML({ tabId: 0 }); // $ExpectType Blob | undefined
+// https://developer.chrome.com/docs/extensions/reference/api/pageCapture
+function testPageCapture() {
+    const details = { tabId: 0 };
+
+    chrome.pageCapture.saveAsMHTML(details); // $ExpectType Promise<Blob | undefined>
+    chrome.pageCapture.saveAsMHTML(details, (data) => { // $ExpectType void
+        data; // $ExpectType Blob | undefined
+    });
+    // @ts-expect-error
+    chrome.pageCapture.saveAsMHTML(details, () => {}).then(() => {});
 }
 
 // https://developer.chrome.com/docs/extensions/reference/api/downloads