fix(diagnostics): enforce current-editor snapshots and stale results.

playwright/diagnostics.spec.ts

@@ -62,7 +62,7 @@ test('clear component diagnostics removes type errors and restores rendered stat
   await expect(page.getByText(/Rendered \(Type errors: [1-9]\d*\)/)).toBeVisible()
 
   await ensureDiagnosticsDrawerOpen(page)
-  await page.getByRole('button', { name: 'Reset component' }).click()
+  await page.getByRole('button', { name: 'Reset types' }).click()
 
   await expect(page.getByText('No diagnostics yet.')).toHaveCount(2)
   await expect(diagnosticsToggle).toHaveText('Diagnostics')
@@ -419,9 +419,9 @@ test('clear component diagnostics resets rendered lint-issue status pill', async
   )
 
   await ensureDiagnosticsDrawerOpen(page)
-  await page.getByRole('button', { name: 'Reset component' }).click()
+  await page.getByRole('button', { name: 'Reset lint' }).click()
 
-  await expect(page.getByText('No diagnostics yet.')).toHaveCount(2)
+  await expect(page.locator('#diagnostics-styles')).toContainText('No diagnostics yet.')
   await expect(diagnosticsToggle).toHaveText('Diagnostics')
   await expect(diagnosticsToggle).toHaveClass(/diagnostics-toggle--neutral/)
   await expect(page.getByText('Rendered', { exact: true })).toHaveClass(/status--neutral/)
@@ -458,7 +458,7 @@ test('component lint ignores only unused App binding', async ({ page }) => {
   expect(diagnosticsText).toContain('This function render is unused')
 })
 
-test('component lint with unresolved issues enters pending diagnostics state while typing', async ({
+test('component lint with unresolved issues becomes stale and waits for manual rerun', async ({
   page,
 }) => {
   await waitForInitialRender(page)
@@ -481,10 +481,147 @@ test('component lint with unresolved issues enters pending diagnostics state whi
     ),
   )
 
-  await expect(diagnosticsToggle).toHaveClass(/diagnostics-toggle--pending/)
-  await expect(diagnosticsToggle).toHaveAttribute('aria-busy', 'true')
-
-  await expect(page.getByText(/Rendered \(Lint issues: [1-9]\d*\)/)).toBeVisible()
-  await expect(diagnosticsToggle).toHaveClass(/diagnostics-toggle--error/)
+  await expect(diagnosticsToggle).toHaveClass(/diagnostics-toggle--neutral/)
   await expect(diagnosticsToggle).toHaveAttribute('aria-busy', 'false')
+
+  await ensureDiagnosticsDrawerOpen(page)
+  await expect(page.locator('#diagnostics-styles')).toContainText(
+    'Source changed. Click Lint to run diagnostics.',
+  )
+
+  await expect(page.getByText('Rendered', { exact: true })).toBeVisible()
+})
+
+test('styles active tab shows lint-only diagnostics drawer actions', async ({ page }) => {
+  await waitForInitialRender(page)
+
+  await ensurePanelToolsVisible(page, 'styles')
+  await ensureDiagnosticsDrawerOpen(page)
+
+  await expect(page.locator('[data-diagnostics-scope="component"]')).toBeHidden()
+  await expect(page.locator('#diagnostics-clear-styles')).toHaveText('Reset lint')
+  await expect(page.locator('#diagnostics-clear-styles')).toBeVisible()
+  await expect(page.locator('#diagnostics-clear-component')).toBeHidden()
+  await expect(page.locator('#diagnostics-clear-all')).toBeHidden()
+})
+
+test('component lint completion is ignored after switching to another component tab', async ({
+  page,
+}) => {
+  await waitForInitialRender(page)
+
+  await ensurePanelToolsVisible(page, 'component')
+  await addWorkspaceTab(page)
+
+  const heavyLintSource = [
+    ...Array.from({ length: 120 }, (_, index) => `const unused${index} = ${index}`),
+    'const App = () => <button>module tab</button>',
+  ].join('\n')
+
+  await setWorkspaceTabSource(page, {
+    fileName: 'module.tsx',
+    kind: 'component',
+    source: heavyLintSource,
+  })
+
+  const lintTrigger = page.getByRole('button', { name: 'Lint' }).first()
+  await lintTrigger.click()
+
+  await setComponentEditorSource(
+    page,
+    'const App = () => <button type="button">A</button>',
+  )
+
+  await expect(page.locator('#diagnostics-styles')).toContainText(
+    'Source changed. Click Lint to run diagnostics.',
+  )
+  await expect(page.locator('#diagnostics-styles')).not.toContainText(
+    'Biome reported issues.',
+  )
+  await expect(page.getByRole('button', { name: /^Diagnostics/ })).toHaveClass(
+    /diagnostics-toggle--neutral/,
+  )
+})
+
+test('switching tabs clears diagnostics while drawer is open', async ({ page }) => {
+  await waitForInitialRender(page)
+
+  await setComponentEditorSource(page, 'const App = () => <button>lint me</button>')
+  await runComponentLint(page)
+
+  await ensureDiagnosticsDrawerOpen(page)
+  await expect(page.locator('#diagnostics-styles')).toContainText(
+    'Biome reported issues.',
+  )
+
+  await page.getByRole('button', { name: 'Open tab app.css' }).click()
+
+  await expect(page.locator('#diagnostics-styles')).toContainText('No diagnostics yet.')
+  await expect(page.getByRole('button', { name: /^Diagnostics/ })).toHaveClass(
+    /diagnostics-toggle--neutral/,
+  )
+})
+
+test('same-tab edits with drawer open replace lint issues with stale state', async ({
+  page,
+}) => {
+  await waitForInitialRender(page)
+
+  await setComponentEditorSource(
+    page,
+    ['const count: string = 1', 'const App = () => <button>Inactive</button>'].join('\n'),
+  )
+
+  await runTypecheck(page)
+  await runComponentLint(page)
+  await ensureDiagnosticsDrawerOpen(page)
+
+  await expect(page.locator('#diagnostics-component')).toContainText('TypeScript found')
+  await expect(page.locator('#diagnostics-styles')).toContainText(
+    'Biome reported issues.',
+  )
+
+  await setComponentEditorSource(
+    page,
+    [
+      'const count: string = "ok"',
+      'const App = () => <button type="button">Inactive</button>',
+    ].join('\n'),
+  )
+
+  await expect(page.locator('#diagnostics-component')).not.toContainText('TS2322')
+  await expect(page.locator('#diagnostics-styles')).toContainText(
+    'Source changed. Click Lint to run diagnostics.',
+  )
+  await expect(page.locator('#diagnostics-styles')).not.toContainText(
+    'Biome reported issues.',
+  )
+})
+
+test('reset lint on styles tab clears in-flight component lint state', async ({
+  page,
+}) => {
+  await waitForInitialRender(page)
+
+  const heavyLintSource = [
+    ...Array.from({ length: 120 }, (_, index) => `const unused${index} = ${index}`),
+    'const App = () => <button>component tab</button>',
+  ].join('\n')
+
+  await setComponentEditorSource(page, heavyLintSource)
+
+  await ensureDiagnosticsDrawerOpen(page)
+  await page.getByRole('button', { name: 'Lint' }).first().click()
+
+  await page.getByRole('button', { name: 'Open tab app.css' }).click()
+  await page.locator('#diagnostics-clear-styles').click()
+
+  await expect(page.getByRole('button', { name: /^Diagnostics/ })).toHaveAttribute(
+    'aria-busy',
+    'false',
+  )
+  await expect(page.locator('#diagnostics-styles')).toContainText('No diagnostics yet.')
+  await expect(page.locator('#diagnostics-styles')).not.toContainText(
+    'Biome reported issues.',
+  )
 })

src/app.js

@@ -28,6 +28,7 @@ import {
   createWorkspaceContextSnapshotGetter,
   toStyleModeForTabLanguage,
 } from './modules/app-core/workspace-local-helpers.js'
+import { createDiagnosticsTabStateHelpers } from './modules/app-core/diagnostics-tab-state-helpers.js'
 import { createWorkspaceEditorHelpers } from './modules/app-core/workspace-editor-helpers.js'
 import { createEditedIndicatorVisibilityController } from './modules/app-core/edited-indicator-visibility-controller.js'
 import { createPublishTrailingNewlineNormalizer } from './modules/app-core/publish-trailing-newline-normalizer.js'
@@ -187,6 +188,14 @@ const diagnosticsClearStyles = document.getElementById('diagnostics-clear-styles
 const diagnosticsClearAll = document.getElementById('diagnostics-clear-all')
 const diagnosticsComponent = document.getElementById('diagnostics-component')
 const diagnosticsStyles = document.getElementById('diagnostics-styles')
+const diagnosticsComponentSection = document.querySelector(
+  '[data-diagnostics-scope="component"]',
+)
+const diagnosticsStylesSection = document.querySelector(
+  '[data-diagnostics-scope="styles"]',
+)
+const diagnosticsComponentHeading = diagnosticsComponentSection?.querySelector('h3')
+const diagnosticsStylesHeading = diagnosticsStylesSection?.querySelector('h3')
 const appToast = document.getElementById('app-toast')
 const previewBgColorInput = document.getElementById('preview-bg-color')
 const clearConfirmDialog = document.getElementById('clear-confirm-dialog')
@@ -224,6 +233,7 @@ cssEditor.value = defaultCss
 let previewHost = document.getElementById('preview-host')
 let jsxCodeEditor = null
 let cssCodeEditor = null
+let diagnosticsFlowController = null
 let getJsxSource = () => jsxEditor.value
 let getCssSource = () => cssEditor.value
 let renderRuntime = null
@@ -647,11 +657,40 @@ const workspaceSyncController = createWorkspaceSyncController({
 const getLoadedComponentWorkspaceTab = () =>
   workspaceTabsState.getTab(loadedComponentTabId) ?? getWorkspaceTabByKind('component')
 
+const getLoadedStylesWorkspaceTab = () =>
+  workspaceTabsState.getTab(loadedStylesTabId) ?? getWorkspaceTabByKind('styles')
+
 const getTypecheckSourcePath = () => {
   const loadedComponentTab = getLoadedComponentWorkspaceTab()
   return toNonEmptyWorkspaceText(loadedComponentTab?.path) || defaultComponentTabPath
 }
 
+const {
+  clearDiagnosticsOnTabSwitch,
+  getComponentLintTarget,
+  getStylesLintTarget,
+  syncDiagnosticsDrawerLayout,
+} = createDiagnosticsTabStateHelpers({
+  getActiveWorkspaceTab,
+  getLoadedComponentWorkspaceTab,
+  getLoadedStylesWorkspaceTab,
+  getTabKind,
+  toNonEmptyWorkspaceText,
+  diagnosticsComponentSection,
+  diagnosticsStylesSection,
+  diagnosticsComponentHeading,
+  diagnosticsStylesHeading,
+  diagnosticsClearComponent,
+  diagnosticsClearStyles,
+  diagnosticsClearAll,
+  clearAllDiagnostics,
+  setTypeDiagnosticsPending,
+  setLintDiagnosticsPending,
+  statusNode,
+  setStatus,
+  getDiagnosticsFlowController: () => diagnosticsFlowController,
+})
+
 const createWorkspaceTabId = prefix => createWorkspaceTabIdFactory(prefix)
 
 const makeUniqueTabPath = ({ basePath, suffix = '' }) =>
@@ -734,6 +773,13 @@ const {
   },
   persistRenderMode: mode => persistRenderMode(mode),
   getActiveWorkspaceTab,
+  onActiveWorkspaceTabChange: (_tab, { changed } = {}) => {
+    syncDiagnosticsDrawerLayout()
+
+    if (changed) {
+      clearDiagnosticsOnTabSwitch()
+    }
+  },
   loadWorkspaceTabIntoEditor,
   updateRenderModeEditability: () => updateRenderModeEditability(),
   getHasCompletedInitialWorkspaceBootstrap: () => hasCompletedInitialWorkspaceBootstrap,
@@ -1223,6 +1269,8 @@ const runtimeCoreOptions = createRuntimeCoreOptions({
   getJsxSource: () => getJsxSource(),
   getCssSource: () => getCssSource(),
   getTypecheckSourcePath,
+  getComponentLintTarget,
+  getStylesLintTarget,
   buildWorkspaceTabsSnapshot,
   renderMode,
   styleMode,
@@ -1267,7 +1315,7 @@ const runtimeCoreOptions = createRuntimeCoreOptions({
 })
 const runtimeCore = createRuntimeCoreSetup(runtimeCoreOptions)
 
-const diagnosticsFlowController = runtimeCore.diagnosticsFlowController
+diagnosticsFlowController = runtimeCore.diagnosticsFlowController
 renderRuntime = runtimeCore.renderRuntime
 const setCdnLoading = runtimeCore.setCdnLoading
 const typeDiagnostics = diagnosticsFlowController.typeDiagnostics
@@ -1360,6 +1408,8 @@ bindAppEventsAndStart({
     renderPreview,
     setJsxSource,
     setCssSource,
+    persistActiveTabEditorContent,
+    getWorkspaceTabsSnapshot: () => workspaceTabsState.getTabs(),
     queueWorkspaceSave,
     maybeRender,
     maybeRenderFromComponentEditorChange,
@@ -1389,6 +1439,7 @@ bindAppEventsAndStart({
     updateRenderModeEditability,
     loadPreferredWorkspaceContext,
     getActiveWorkspaceTab,
+    getTabKind,
     setActiveWorkspaceTab,
     workspaceTabsState,
     loadedStylesTabIdRef: {
@@ -1397,6 +1448,7 @@ bindAppEventsAndStart({
       },
     },
     getWorkspaceTabByKind,
+    syncDiagnosticsDrawerLayout,
     workspaceSaveController,
     workspaceStorage,
     bindWorkspaceMetadataPersistence,