Notarize in afterSign step instead of afterPack

package.json

@@ -401,6 +401,7 @@
     },
     "beforeBuild": "scripts/install-cross-deps.js",
     "afterPack": "ts/scripts/after-pack.js",
+    "afterSign": "ts/scripts/after-sign.js",
     "asarUnpack": [
       "ts/workers/heicConverter.bundle.js",
       "ts/sql/mainWorker.bundle.js",

ts/scripts/after-pack.ts

@@ -6,14 +6,10 @@ import { afterPack as fuseElectron } from './fuse-electron';
 import { afterPack as mergeASARs } from './merge-macos-asars';
 import { afterPack as copyPacks } from './copy-language-packs';
 import { afterPack as pruneMacOSRelease } from './prune-macos-release';
-import { afterPack as notarize } from './notarize';
 
 export async function afterPack(context: AfterPackContext): Promise<void> {
   await pruneMacOSRelease(context);
   await mergeASARs(context);
   await fuseElectron(context);
   await copyPacks(context);
-
-  // This must be the last step
-  await notarize(context);
 }

ts/scripts/after-sign.ts

@@ -0,0 +1,12 @@
+// Copyright 2022 Signal Messenger, LLC
+// SPDX-License-Identifier: AGPL-3.0-only
+
+import type { AfterPackContext } from 'electron-builder';
+import { afterSign as notarize } from './notarize';
+
+// NOTE: It is AfterPackContext here even though it is afterSign.
+// See: https://www.electron.build/configuration/configuration.html#aftersign
+export async function afterSign(context: AfterPackContext): Promise<void> {
+  // This must be the last step
+  await notarize(context);
+}

ts/scripts/notarize.ts

@@ -10,7 +10,7 @@ import * as packageJson from '../../package.json';
 
 /* eslint-disable no-console */
 
-export async function afterPack({
+export async function afterSign({
   appOutDir,
   packager,
   electronPlatformName,