iframe-proxy

czenko · 2026-10-20T23:33:27Z

Closes DOCS-1464

Problem

The new docs navigation, Option 1, needs an A/B test against today's navigation. The docs app has no flag that switches the navigation per visitor.

docs:* keys in this repo are build-time toggles from enabled-features. They are the same for every visitor, so they can't run an A/B. The flag is docs-ia-mvp-v1, a PostHog multivariate flag, like docs-search-v2.

Solution

Variant hook: useIaNavVariant reads docs-ia-mvp-v1 and returns control or option-1. It copies useSearchV2Variant. It returns control until the flag resolves, records exposure once resolved, and respects consent.
Query param override: ?docs-ia-mvp-v1=option-1 or ?docs-ia-mvp-v1=control forces a variant for dogfooding and evals. A forced variant records no exposure.
Option 1 config: features/IaNav/option1.constants.ts re-exports today's navigation constants. An export defined in that file replaces the re-exported one, so Option 1 in DOCS-1469 overrides only what changes.
Consumers: The top nav, the mobile menu, and the guide sidebar read from useNavItems, which picks the config for the variant.

Not changed: Reference sidebars, breadcrumbs, and hub pages. Breadcrumbs and hub pages can read useIaNavVariant in DOCS-1470 and DOCS-1471.

PostHog: The flag doesn't exist in PostHog yet. Until it does, every visitor gets control, and the query param still works.

Manual testing

Open Auth with Option 1 forced. The top nav and sidebar match today's navigation, because the Option 1 config is a copy. Locally, you can make a change to see the variant.
Open Auth with no param. The navigation is unchanged.

vercel · 2026-10-20T23:33:31Z

supabase · 2026-10-20T23:34:36Z

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coderabbitai · 2026-10-20T23:34:40Z

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📒 Files selected for processing: 3

apps/docs/components/Navigation/NavigationMenu/GlobalMobileMenu.tsx
apps/docs/features/IaNav/useIaNavVariant.test.ts
apps/docs/features/IaNav/useIaNavVariant.ts

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apps/docs/features/IaNav/useIaNavVariant.ts

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📝 Walkthrough

The docs navigation now selects its menu items through hooks. The hooks support a PostHog IA variant, query-parameter overrides, and a control fallback. The mobile, desktop, and guide-list navigation components use the selected items.

Changes: IA Navigation Variant

Layer / File(s)	Summary
Resolve the IA variant `apps/docs/features/IaNav/constants.ts`, `apps/docs/features/IaNav/useIaNavVariant.ts`, `apps/docs/features/IaNav/useIaNavVariant.test.ts`	Added the IA flag and variant type, a hook that selects the variant, and tests for flag resolution, query overrides, fallback behavior, and exposure tracking.
Select navigation items `apps/docs/features/IaNav/option1.constants.ts`, `apps/docs/features/IaNav/useNavItems.ts`, `apps/docs/features/IaNav/index.ts`	Added the Option 1 navigation configuration and a hook that selects it for the option-1 variant. Exported both navigation hooks.
Use selected items in navigation `apps/docs/components/Navigation/NavigationMenu/GlobalMobileMenu.tsx`, `apps/docs/components/Navigation/NavigationMenu/GlobalNavigationMenu.tsx`, `apps/docs/components/Navigation/NavigationMenu/NavigationMenuGuideList.tsx`	Updated the mobile, desktop, and guide-list navigation components to get their items through `useNavItems`. Updated `useActiveMenuLabel` to accept the shared `GlobalMenuItems` type.

Priority: ⬇️ Low

Estimated code review effort: 3 (Moderate) | ~20 minutes

Change: Feature

Sequence Diagram(s)

sequenceDiagram
  participant GlobalNavigationMenu
  participant useNavItems
  participant useIaNavVariant
  participant PostHog
  GlobalNavigationMenu->>useNavItems: Request navigation items
  useNavItems->>useIaNavVariant: Get IA variant
  alt Valid query-parameter override
    useIaNavVariant-->>useNavItems: Return override variant
  else No valid override
    useIaNavVariant->>PostHog: Read experiment variant and resolution state
    PostHog-->>useIaNavVariant: Return flag state and variant
    useIaNavVariant-->>useNavItems: Return resolved variant or control fallback
  end
  useNavItems-->>GlobalNavigationMenu: Return selected navigation items

Suggested reviewers: ivasilov

Merge Risk: ⚪ Minimal · up to 616cf

The navigation change is mergeable based on the established evidence, subject to normal checks.

Pre-merge checks: 4 · 1

Failed checks: 1 warning

Check name	Status	Explanation	Resolution
Docstring Coverage		Docstring coverage is 66.67% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 3 functions across 9 files.	Write docstrings for the functions missing them to satisfy the coverage threshold.

Passed checks: 4 passed

Full details: Title check

Explanation

The title "feat(docs): add docs-ia-mvp-v1 flag for the new navigation" matches the main change. The PR adds the docs-ia-mvp-v1 PostHog multivariate flag, the useIaNavVariant hook, and the Option 1 navigation config that the top nav, mobile menu, and guide sidebar read through useNavItems. The title is specific, follows the conventional commit style, and fits within a typical length. It does not cover the query-parameter override or the consumer wiring, which is expected for a short title.

Full details: Description check

Explanation

The description follows the template. It has Problem and Solution sections that explain why a PostHog multivariate flag is needed, how useIaNavVariant works, the query-parameter override, the Option 1 config, and the consumers. It also has a manual testing procedure with preview links, which covers the Review instructions section. It says the PostHog flag does not exist yet. It lacks the template's optional preview table, which is acceptable since the links appear in the testing steps. The checklist items are not ticked, and the description does not show whether the author read CONTRIBUTING.md or used a docs skill. This is a minor gap in a mostly complete description.

✨ Finishing Touches: 💡 1

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Actionable comments posted: 2

🪄 Fix comments: Fix CodeRabbit comments on this PR

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Inline comments:
Review comments at @apps/docs/features/IaNav/useIaNavVariant.ts:
- Around line 23-24: Update the exposure logic in useIaNavVariant so false or
otherwise disabled flag values do not record an exposure; only record exposure
when flagValue is an assigned variant, while preserving control navigation
selection. Update the related test to expect no exposure for false.
- Line 27: Update the exposure guard in useIaNavVariant so URL overrides are
resolved before recording exposure, including the initial empty-parameter
render; check the current window URL at capture time or use an initialized
search-parameter state, and add coverage for both initial empty parameters and
the subsequently loaded override.

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📒 Files selected for processing: 9

apps/docs/components/Navigation/NavigationMenu/GlobalMobileMenu.tsx
apps/docs/components/Navigation/NavigationMenu/GlobalNavigationMenu.tsx
apps/docs/components/Navigation/NavigationMenu/NavigationMenuGuideList.tsx
apps/docs/features/IaNav/constants.ts
apps/docs/features/IaNav/index.ts
apps/docs/features/IaNav/option1.constants.ts
apps/docs/features/IaNav/useIaNavVariant.test.ts
apps/docs/features/IaNav/useIaNavVariant.ts
apps/docs/features/IaNav/useNavItems.ts

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Reads the docs-ia-mvp-v1 PostHog flag and records exposure, following the Search v2 pattern. The top nav, mobile menu, and guide sidebar read from the Option 1 config when the flag is on. That config re-exports today's navigation for now.

Menu now resolves the nav items and active label once and passes activeLabel to each section, instead of every section running both hooks.

Forcing control and a control flag value run the same branches as forcing option-1 and a false flag value.

A false flag means the visitor is outside the rollout, so it no longer records a control exposure. The exposure check also reads the URL directly, because useSearchParamsShallow is empty until after mount and a forced variant could record an exposure.

czenko requested a review from a team as a code owner October 20, 2026 23:33

github-actions Bot added the documentation Improvements or additions to documentation label Oct 20, 2026

coderabbitai Bot reviewed Oct 20, 2026

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Comment thread apps/docs/features/IaNav/useIaNavVariant.ts Outdated

Comment thread apps/docs/features/IaNav/useIaNavVariant.ts Outdated

czenko added this pull request to stack #52192 October 22, 2026 22:17

This was referenced Oct 22, 2026

test(docs): fail navigation levels with 10 or more items #52190

Open

feat(docs): add Option 1 navigation behind the flag #52191

Open

czenko added 4 commits October 22, 2026 15:28

perf(docs): read nav variant once in the mobile menu

031c35c

Menu now resolves the nav items and active label once and passes activeLabel to each section, instead of every section running both hooks.

test(docs): drop redundant useIaNavVariant cases

3c9f937

Forcing control and a control flag value run the same branches as forcing option-1 and a false flag value.

czenko force-pushed the docs/ia-nav-flag branch from 616cf88 to ce70a12 Compare October 22, 2026 22:32

Sunbelt Computer Software

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feat(docs): add docs-ia-mvp-v1 flag for the new navigation - #52049

feat(docs): add docs-ia-mvp-v1 flag for the new navigation#52049
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docs/ia-nav-flag

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Problem

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