[typotter]

Motivation

Client SDKs need a shared precomputed-assignment fixture for validating dependent flag evaluation, telemetry, and RUM enrichment through a real browser.

Changes

• Add a web-scoped successful dependency graph with selected prerequisite assignments referenced from dependencyEvaluations.
• Add a failed graph that propagates FLAG_NOT_FOUND, returns the caller default, and marks an evaluated but non-selected leaf with isPresentInAssignment: false.
• Assert exact exposure and evaluation telemetry, including no exposure for failed or non-selected branches.

Decisions

Dependency assignments live in the top-level flags map. Each root dependency evaluation references its flag by flagKey and records whether it was present in the assignment, matching the precomputed response consumed by the browser SDK.

The fixture is currently scoped to web, where the dependent-assignment client implementation and RUM-FIT coverage are available.

Validation

• python3 ci/validate-precomputed-fixtures.py: 13 valid, 0 errors.
• RUM-FIT Chromium precomputed case: 1 passed, 39 deselected.
• RUM-FIT RUM action enrichment case: 1 passed, 40 deselected. The action contained the successful root and only prerequisites with isPresentInAssignment: true.

Checklist

• JSON files are valid (no syntax errors)
• UFC flag-reference checklist is not applicable; this is a precomputed-assignment response fixture
• UFC flag/case checklist is not applicable; this does not change ufc-config.json
• Expected results match the dependent assignment contract and were exercised through the browser SDK

[Copilot]

🟢 Approval recommended

No active review issues were identified for the web-only dependent-flag evaluation and telemetry fixture.

No open issues 🎉

What changed in this PR

Adds a web-only precomputed-assignment fixture for client SDK testing of dependent flag evaluation and telemetry, supporting browser-based RUM enrichment checks.

Changes:

• Defines successful and failed dependency graphs with explicit prerequisite references.
• Checks successful resolution and caller-default fallback with propagated FLAG_NOT_FOUND errors.
• Asserts exact exposure and evaluation event counts, excluding exposures for failed or non-selected branches.

File	Description
precomputed-assignments/​cases/​emissions/​dependent-flags.json	Adds dependent flag assignments, expected evaluation results, and telemetry matchers scoped to web.

_{Review effort: Balanced}