Enable a few more tsconfig options (#35553)

Enable a few more useful options in tsconfig. `noImplicitReturns` had
two cases which I've fixed. Also, partially sort the file.

tsconfig.json

@@ -1,7 +1,7 @@
 {
   "include": [
-    "${configDir}/.*",
     "${configDir}/*",
+    "${configDir}/.*",
     "${configDir}/tests/e2e/**/*",
     "${configDir}/tests/e2e/**/.*",
     "${configDir}/tools/**/*",
@@ -17,27 +17,31 @@
     "allowImportingTsExtensions": true,
     "allowJs": true,
     "allowSyntheticDefaultImports": true,
+    "allowUnreachableCode": false,
+    "allowUnusedLabels": false,
     "alwaysStrict": true,
     "erasableSyntaxOnly": true,
     "esModuleInterop": true,
+    "exactOptionalPropertyTypes": false,
     "isolatedModules": true,
     "libReplacement": false,
     "noEmit": true,
+    "noFallthroughCasesInSwitch": true,
+    "noImplicitAny": true,
+    "noImplicitReturns": true,
+    "noImplicitThis": true,
+    "noPropertyAccessFromIndexSignature": false,
+    "noUnusedLocals": true,
+    "noUnusedParameters": true,
     "resolveJsonModule": true,
     "skipLibCheck": true,
-    "verbatimModuleSyntax": true,
-    "stripInternal": true,
+    "sourceMap": true,
     "strict": false,
     "strictBindCallApply": true,
     "strictBuiltinIteratorReturn": true,
     "strictFunctionTypes": true,
-    "noImplicitAny": true,
-    "noImplicitThis": true,
-    "noUnusedLocals": true,
-    "noUnusedParameters": true,
-    "noPropertyAccessFromIndexSignature": false,
-    "exactOptionalPropertyTypes": false,
-    "sourceMap": true,
+    "stripInternal": true,
+    "verbatimModuleSyntax": true,
     "types": [
       "vitest/globals",
       "./web_src/js/globals.d.ts",

web_src/js/features/tablesort.ts

@@ -10,7 +10,7 @@ export function initTableSort() {
 }
 
 function tableSort(normSort: string, revSort: string, isDefault: string) {
-  if (!normSort) return false;
+  if (!normSort) return;
   if (!revSort) revSort = '';
 
   const url = new URL(window.location.href);

web_src/js/modules/toast.ts

@@ -43,7 +43,7 @@ type ToastOpts = {
 type ToastifyElement = HTMLElement & {_giteaToastifyInstance?: Toast};
 
 /** See https://github.com/apvarun/toastify-js#api for options */
-function showToast(message: string, level: Intent, {gravity, position, duration, useHtmlBody, preventDuplicates = true, ...other}: ToastOpts = {}): Toast {
+function showToast(message: string, level: Intent, {gravity, position, duration, useHtmlBody, preventDuplicates = true, ...other}: ToastOpts = {}): Toast | null {
   const body = useHtmlBody ? message : htmlEscape(message);
   const parent = document.querySelector('.ui.dimmer.active') ?? document.body;
   const duplicateKey = preventDuplicates ? (preventDuplicates === true ? `${level}-${body}` : preventDuplicates) : '';
@@ -56,7 +56,7 @@ function showToast(message: string, level: Intent, {gravity, position, duration,
       showElem(toastDupNumEl);
       toastDupNumEl.textContent = String(Number(toastDupNumEl.textContent) + 1);
       animateOnce(toastDupNumEl, 'pulse-1p5-200');
-      return;
+      return null;
     }
   }
 
@@ -83,15 +83,15 @@ function showToast(message: string, level: Intent, {gravity, position, duration,
   return toast;
 }
 
-export function showInfoToast(message: string, opts?: ToastOpts): Toast {
+export function showInfoToast(message: string, opts?: ToastOpts): Toast | null {
   return showToast(message, 'info', opts);
 }
 
-export function showWarningToast(message: string, opts?: ToastOpts): Toast {
+export function showWarningToast(message: string, opts?: ToastOpts): Toast | null {
   return showToast(message, 'warning', opts);
 }
 
-export function showErrorToast(message: string, opts?: ToastOpts): Toast {
+export function showErrorToast(message: string, opts?: ToastOpts): Toast | null {
   return showToast(message, 'error', opts);
 }