Reduce react-devtools-custom overhead by deferring hook inspection

inspectHooksOfFiber is too expensive for this use case. On frequently updating
components, it can become slow enough to freeze the browser.

Revert hook change detection to the pre-react#35123 behavior. Then defer parsing
hook metadata, such as hook names, until after the commit completes, and add
caching so hook inspection runs at most once per fiber whenever possible.

For now, special handling is only implemented for SyncExternalStore,
Transition, ActionState, and FormState.

Author: mdm317

.github/workflows/create_release_on_commit.yml

@@ -0,0 +1,97 @@
+name: Create GitHub Release on Commit
+
+on:
+  push:
+    branches:
+      - '**'
+
+permissions:
+  contents: write
+
+jobs:
+  create_release:
+    name: Create versioned release from package.json
+    if: github.event.deleted == false
+    runs-on: ubuntu-latest
+    steps:
+      - name: Create GitHub release
+        uses: actions/github-script@v7
+        with:
+          script: |
+            const {owner, repo} = context.repo;
+            const branch = context.ref.replace('refs/heads/', '');
+            const sha = context.sha;
+            const packagePath = 'packages/react-devtools-custom/package.json';
+            const packageFile = await github.rest.repos.getContent({
+              owner,
+              repo,
+              path: packagePath,
+              ref: sha,
+            });
+
+            if (Array.isArray(packageFile.data) || !packageFile.data.content) {
+              throw new Error(`Could not read ${packagePath} from commit ${sha}.`);
+            }
+
+            const packageJson = JSON.parse(
+              Buffer.from(packageFile.data.content, 'base64').toString('utf8')
+            );
+
+            if (!packageJson.name || !packageJson.version) {
+              throw new Error(
+                `${packagePath} must include both "name" and "version".`
+              );
+            }
+
+            const releaseName = `${packageJson.name}-v${packageJson.version}`;
+            const tagName = releaseName;
+            const tagRef = `refs/tags/${tagName}`;
+            const commitUrl = `${context.serverUrl}/${owner}/${repo}/commit/${sha}`;
+            const commitMessage = context.payload.head_commit?.message || '';
+            const releaseBody = [
+              `Branch: ${branch}`,
+              `Commit: ${sha}`,
+              `Package: ${packageJson.name}`,
+              `Version: ${packageJson.version}`,
+              '',
+              commitMessage,
+              '',
+              commitUrl,
+            ].join('\n');
+
+            try {
+              await github.rest.git.createRef({
+                owner,
+                repo,
+                ref: tagRef,
+                sha,
+              });
+              core.info(`Created tag ${tagName} for ${sha}.`);
+            } catch (error) {
+              if (error.status !== 422) {
+                throw error;
+              }
+
+              core.info(`Tag ${tagName} already exists; continuing.`);
+            }
+
+            try {
+              await github.rest.repos.createRelease({
+                owner,
+                repo,
+                tag_name: tagName,
+                target_commitish: sha,
+                name: releaseName,
+                body: releaseBody,
+                draft: false,
+                prerelease: false,
+                make_latest: 'false',
+              });
+              core.info(`Created release ${tagName}.`);
+            } catch (error) {
+              if (error.status !== 422) {
+                throw error;
+              }
+
+              core.info(`Release ${tagName} already exists; skipping.`);
+            }

.gitignore

@@ -28,6 +28,7 @@ chrome-user-data
 .claude/*.local.*
 
 packages/react-devtools-core/dist
+packages/react-devtools-custom/dist
 packages/react-devtools-extensions/chrome/build
 packages/react-devtools-extensions/chrome/*.crx
 packages/react-devtools-extensions/chrome/*.pem
@@ -40,4 +41,3 @@ packages/react-devtools-fusebox/dist
 packages/react-devtools-inline/dist
 packages/react-devtools-shell/dist
 packages/react-devtools-timeline/dist
-