chore: tsify auto-updater (#24328)

lib/browser/api/auto-updater/auto-updater-win.ts

@@ -0,0 +1,76 @@
+import { app } from 'electron';
+import { EventEmitter } from 'events';
+import * as squirrelUpdate from './squirrel-update-win';
+
+class AutoUpdater extends EventEmitter {
+  updateAvailable: boolean = false;
+  updateURL: string | null = null;
+
+  quitAndInstall () {
+    if (!this.updateAvailable) {
+      return this.emitError(new Error('No update available, can\'t quit and install'));
+    }
+    squirrelUpdate.processStart();
+    app.quit();
+  }
+
+  getFeedURL () {
+    return this.updateURL;
+  }
+
+  setFeedURL (options: { url: string } | string) {
+    let updateURL: string;
+    if (typeof options === 'object') {
+      if (typeof options.url === 'string') {
+        updateURL = options.url;
+      } else {
+        throw new Error('Expected options object to contain a \'url\' string property in setFeedUrl call');
+      }
+    } else if (typeof options === 'string') {
+      updateURL = options;
+    } else {
+      throw new Error('Expected an options object with a \'url\' property to be provided');
+    }
+    this.updateURL = updateURL;
+  }
+
+  checkForUpdates () {
+    const url = this.updateURL;
+    if (!url) {
+      return this.emitError(new Error('Update URL is not set'));
+    }
+    if (!squirrelUpdate.supported()) {
+      return this.emitError(new Error('Can not find Squirrel'));
+    }
+    this.emit('checking-for-update');
+    squirrelUpdate.checkForUpdate(url, (error, update) => {
+      if (error != null) {
+        return this.emitError(error);
+      }
+      if (update == null) {
+        return this.emit('update-not-available');
+      }
+      this.updateAvailable = true;
+      this.emit('update-available');
+      squirrelUpdate.update(url, (error) => {
+        if (error != null) {
+          return this.emitError(error);
+        }
+        const { releaseNotes, version } = update;
+        // Date is not available on Windows, so fake it.
+        const date = new Date();
+        this.emit('update-downloaded', {}, releaseNotes, version, date, this.updateURL, () => {
+          this.quitAndInstall();
+        });
+      });
+    });
+  }
+
+  // Private: Emit both error object and message, this is to keep compatibility
+  // with Old APIs.
+  emitError (error: Error) {
+    this.emit('error', error, error.message);
+  }
+}
+
+export default new AutoUpdater();