Revert "WebUI: Enable @typescript-eslint/require-await check in build_webui()."

This reverts commit 32867d045f.

Reason for revert: Breaks the build.

FAILED: gen/ui/webui/resources/cr_components/cr_shortcut_input/eslint.config.mjs 
python3 ../../ui/webui/resources/tools/eslint_ts.py --in_folder gen/ui/webui/resources/cr_components/cr_shortcut_input/preprocessed --out_folder gen/ui/webui/resources/cr_components/cr_shortcut_input --config_base ../../../../../../../../ui/webui/resources/tools/eslint_ts.config_base.mjs --tsconfig tsconfig_build_ts.json --in_files cr_shortcut_input.ts cr_shortcut_input.html.ts cr_shortcut_util.ts
Traceback (most recent call last):
  File "/usr/local/google/home/sesse/chromium/src/out/Default/../../ui/webui/resources/tools/eslint_ts.py", line 78, in <module>
    main(sys.argv[1:])
  File "/usr/local/google/home/sesse/chromium/src/out/Default/../../ui/webui/resources/tools/eslint_ts.py", line 67, in main
    node.RunNode([
  File "/usr/local/google/home/sesse/chromium/src/third_party/node/node.py", line 38, in RunNode
    raise RuntimeError('Command \'%s\' failed\n%s' % (' '.join(cmd), err))
RuntimeError: Command '/usr/local/google/home/sesse/chromium/src/third_party/node/linux/node-linux-x64/bin/node /usr/local/google/home/sesse/chromium/src/third_party/node/node_modules/eslint/bin/eslint --color --quiet --config gen/ui/webui/resources/cr_components/cr_shortcut_input/eslint.config.mjs gen/ui/webui/resources/cr_components/cr_shortcut_input/preprocessed/cr_shortcut_input.ts gen/ui/webui/resources/cr_components/cr_shortcut_input/preprocessed/cr_shortcut_input.html.ts gen/ui/webui/resources/cr_components/cr_shortcut_input/preprocessed/cr_shortcut_util.ts' failed

Oops! Something went wrong! :(

ESLint: 9.10.0

TypeError [ERR_INVALID_ARG_TYPE]: The "path" argument must be of type string. Received undefined
    at new NodeError (node:internal/errors:371:5)
    at validateString (node:internal/validators:119:11)
    at Object.join (node:path:1172:7)
    at file:///usr/local/google/home/sesse/chromium/src/out/Default/gen/ui/webui/resources/cr_components/cr_shortcut_input/eslint.config.mjs?mtime=1739278158700:10:26
    at ModuleJob.run (node:internal/modules/esm/module_job:185:25)
    at async Promise.all (index 0)
    at async ESMLoader.import (node:internal/modules/esm/loader:281:24)
    at async importModuleDynamicallyWrapper (node:internal/vm/module:437:15)
    at async loadFlatConfigFile (/usr/local/google/home/sesse/chromium/src/third_party/node/node_modules/eslint/lib/eslint/eslint.js:390:21)
    at async calculateConfigArray (/usr/local/google/home/sesse/chromium/src/third_party/node/node_modules/eslint/lib/eslint/eslint.js:473:28)

Original change's description:
> WebUI: Enable @typescript-eslint/require-await check in build_webui().
>
>  - Enabling `enable_type_aware_eslint_checks` by default in build_webui().
>  - Fixing a few remaining violations that were not already fixed in
>    precursor CLs.
>  - Fix the dependnecies of the ":lint" target for the case of
>    `use_javascript_coverage=true`
>  - Add a new "ESLint checks" section in styleguide/web/web.md explaining
>    the two different types of ESLint checks.
>  - Update Chromium styleguide additions to include what will be
>    enfroced by @typescript-eslint/require-await as part of this CL,
>    and @typescript-eslint/no-unnecessary-type-assertion in upcoming
>    CLs.
>
> Bug: 394634491
> Change-Id: I59a07d4e76339449c3e5ff79608b57154a3e32cb
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6250398
> Reviewed-by: Rebekah Potter <rbpotter@chromium.org>
> Commit-Queue: Demetrios Papadopoulos <dpapad@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#1418375}

Bug: 394634491
Change-Id: Iccfa9b2c94f608e193f95a7fe454abbec3c3f3b4
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6253018
Reviewed-by: Vasilii Sukhanov <vasilii@chromium.org>
Auto-Submit: Steinar H Gunderson <sesse@chromium.org>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Commit-Queue: Vasilii Sukhanov <vasilii@chromium.org>
Owners-Override: Vasilii Sukhanov <vasilii@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1418592}

chrome/browser/resources/pdf/ink/ink_api.ts

@@ -36,7 +36,7 @@ export class InkApi {
     return this.canvas_.getPDFDestructive();
   }
 
-  setCamera(camera: drawings.Box) {
+  async setCamera(camera: drawings.Box) {
     this.camera_ = camera;
     this.canvas_.setCamera(camera);
     // Wait for the next task to avoid a race where Ink drops the camera value

components/webui/flags/resources/app.ts

@@ -400,7 +400,6 @@ export class FlagsAppElement extends CrLitElement {
    * don't actually exist until after the template code runs; normal navigation
    * therefore doesn't work.
    */
-  // eslint-disable-next-line @typescript-eslint/require-await
   private async highlightReferencedFlag() {
     if (!window.location.hash) {
       return;

content/browser/resources/quota/quota_internals.ts

@@ -267,7 +267,7 @@ async function renderUsageAndQuotaStats() {
   }
 }
 
-function renderSimulateStoragePressureButton() {
+async function renderSimulateStoragePressureButton() {
   getProxy().isSimulateStoragePressureAvailable().then(result => {
     if (!result.available) {
       document.body

content/browser/resources/webxr_internals/webxr_internals.ts

@@ -19,7 +19,7 @@ import type {XrFrameStatistics, XrLogMessage} from './xr_session.mojom-webui.js'
 
 let browserProxy: BrowserProxy;
 
-function bootstrap() {
+async function bootstrap() {
   browserProxy = BrowserProxy.getInstance();
   assert(browserProxy);
 
@@ -30,7 +30,7 @@ function bootstrap() {
   renderSessionStatisticsContent();
 }
 
-function setupSidebarButtonListeners() {
+async function setupSidebarButtonListeners() {
   const deviceInfoButton = getRequiredElement('device-info-button');
   const sessionInfoButton = getRequiredElement('session-info-button');
   const runtimeInfoButton = getRequiredElement('runtime-info-button');
@@ -81,7 +81,7 @@ async function renderDeviceInfoContent() {
   deviceInfoContent.appendChild(table);
 }
 
-function renderSessionInfoContent() {
+async function renderSessionInfoContent() {
   const sessionInfoContent = getRequiredElement('session-info-content');
   assert(sessionInfoContent);
 
@@ -116,7 +116,7 @@ async function renderActiveRuntimesTable(
   runtimeInfoTable.recreateActiveRuntimesTable(activeRuntimes);
 }
 
-function renderRuntimeInfoContent() {
+async function renderRuntimeInfoContent() {
   const runtimeInfoContent = getRequiredElement('runtime-info-content');
   assert(runtimeInfoContent);
 
@@ -143,7 +143,7 @@ function renderRuntimeInfoContent() {
   runtimeInfoContent.appendChild(runtimeChangelogTable);
 }
 
-function renderSessionStatisticsContent() {
+async function renderSessionStatisticsContent() {
   const sessionStatisticsContent =
       getRequiredElement('session-statistics-content');
   assert(sessionStatisticsContent);

docs/webui/webui_build_configuration.md

@@ -666,8 +666,8 @@ enable_source_maps: Defaults to "false". Incompatible with |optimize=true|.
                     Setting it to "true" turns on source map generation for a
                     few underlying targets. See ts_library()'s
                     |enable_source_maps| for more details.
-enable_type_aware_eslint_checks: Defaults to "true". Turns on additional
-                                 type-aware ESLint checks. See
+enable_type_aware_eslint_checks: Defaults to "false". Setting it to "true" turns
+                                 on additional type-aware ESLint checks. See
                                  eslint_ts() for more details.
 ```
 

styleguide/web/web.md

@@ -302,25 +302,21 @@ JavaScript, but it is expected that all code should migrate to TS eventually.
 
 ### Style
 
-The Chromium styleguide is combination of 3 components:
-
-  1. The [Google TypeScript Style Guide](
-     https://google.github.io/styleguide/tsguide.html) which is used as the
-     starting point.
-  2. [ECMAScript Features in Chromium](es.md), which specifies which ES features
-     should or shouldn't be used in Chromium.
-  3. Additional guidelines applied on top of #1, which are listed below.
-
-
-Additional guidelines:
+See the [Google TypeScript Style
+Guide](https://google.github.io/styleguide/tsguide.html) as well as
+[ECMAScript Features in Chromium](es.md).
 
 * Use `$('element-id')` instead of `document.getElementById`. This function can
   be imported from util.m.js.
 
-* Use single-quotes instead of double-quotes for all strings. `clang-format` now
-  handles this automatically.
+* Use single-quotes instead of double-quotes for all strings.
+    * `clang-format` now handles this automatically.
 
-* Prefer `event.preventDefault()` to `return false` from event handlers.
+* Use ES5 getters and setters
+    * Use `@type` (instead of `@return` or `@param`) for JSDoc annotations on
+      getters/setters
+
+* Prefer `event.preventDefault()` to `return false` from event handlers
 
 * Prefer `this.addEventListener('foo-changed', this.onFooChanged_.bind(this));`
   instead of always using an arrow function wrapper, when it makes the code less
@@ -341,56 +337,6 @@ if (!enterKey) {
   errors. Instead use `assert()` statements. Only use the optional chaining
   feature when the code needs to handle null/undefined gracefully.
 
-* Don't use `async` if the body of the function does not use `await`. If the
-  function indeed needs to return a Promise:
-
-```js
-// Don't do this.
-async function hello(): Promise<string> {
-  return 'Hello';
-}
-
-// Do this instead.
-function hello(): Promise<string> {
-  return Promise.resolve('Hello');
-}
-```
-
-* Don't use the non-null `!` operator unnecessarily, for example when TypeScript
-  already knows that a variable can't be null. For example:
-
-```js
-// Don't do this. querySelectorAll never returns null.
-let items = document.body.querySelectorAll('div')!;
-
-// Do this instead.
-let items = document.body.querySelectorAll('div');
-```
-
-### ESLint checks
-
-A big part of the styleguide is automatically enforced via ESLint checks. There
-are two types of ESLint checks:
-
-1. **Checks applied at presubmit time**.
-   These can be triggered locally with `git cl presubmit --files='path/to/folder/*.ts'`
-   and run as part of `git cl upload`.
-
-2. **Checks applied at build time**. These are type-aware checks, which are more
-   sophisticated than the presubmit checks at #1 and must be run as part of the
-   build as they require a tsconfig file to work. See [this list](
-   https://typescript-eslint.io/rules/?=typeInformation) of all possible such
-   checks (not all of these are used in Chromium). Build-time ESLint checks can
-   be triggered locally by building the `chrome` or `browser_tests` binaries, or
-   by explicitly triggering the `:lint` target for cases where `build_webui()`
-   or `build_webui_tests()` is used. For example by running:
-   <br><br>
-   `autoninja -C out/chromium/ chrome/browser/resources/settings:lint`
-   <br><br>
-   See [`build_webui()` docs](
-   https://chromium.googlesource.com/chromium/src/+/HEAD/docs/webui/webui_build_configuration.md#build_webui)
-   for more details.
-
 
 ### Closure compiler (legacy ChromeOS Ash code only)
 
@@ -438,9 +384,6 @@ are two types of ESLint checks:
     * `Promise`
     * `Set`
 
-* Use ES5 getters and setters
-    * Use `@type` (instead of `@return` or `@param`) for JSDoc annotations on
-      getters/setters
 
 ## Polymer
 

ui/webui/resources/cr_components/certificate_manager/certificate_manager_v2.ts

@@ -449,7 +449,7 @@ export class CertificateManagerV2Element extends
   }
 
 
-  private onClientPlatformCertsLinkRowClick_(e: Event) {
+  private async onClientPlatformCertsLinkRowClick_(e: Event) {
     e.preventDefault();
     Router.getInstance().navigateTo(Page.PLATFORM_CLIENT_CERTS);
   }

ui/webui/resources/tools/build_webui.gni

@@ -448,7 +448,7 @@ template("build_webui") {
   }
 
   enable_type_aware_eslint_checks =
-      !defined(invoker.enable_type_aware_eslint_checks) ||
+      defined(invoker.enable_type_aware_eslint_checks) &&
       invoker.enable_type_aware_eslint_checks
 
   if (enable_type_aware_eslint_checks) {
@@ -456,12 +456,10 @@ template("build_webui") {
       in_folder = preprocess_dir
       in_files = filter_exclude(ts_files, [ "*.js" ])
       tsconfig = "$target_gen_dir/tsconfig_build_ts.json"
-      deps = [ ":build_ts" ]
-      if (enable_source_maps) {
-        deps += [ ":create_source_maps" ]
-      } else {
-        deps += [ ":preprocess_ts_files" ]
-      }
+      deps = [
+        ":build_ts",
+        ":preprocess_ts_files",
+      ]
     }
   }