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name: feature-flags
description: Use when implementing or debugging code that uses @suaveplan/feature-flags: Provider-agnostic feature flag evaluation with typed flag values, strategy chains, and deterministic bucketing.
---
# @suaveplan/feature-flags
Provider-agnostic feature flag evaluation engine for controlling feature rollout without code deploys. The package ships a `FlagManager` high-level façade, a `FlagRegistry` backed by any pluggable `FlagProvider`, and an `Evaluator` strategy chain. Five composable strategies cover the full rollout playbook: `PercentageStrategy` (deterministic FNV-1a bucketing for consistent user cohorts), `UserTargetStrategy` (allowlist), `AttributeStrategy` (10 comparison operators for segment targeting), `ScheduleStrategy` (time-window gating), and `CompositeStrategy` (AND/OR combinator). Built-in providers include `MemoryProvider` and `JsonProvider` for file-based flag definitions. Evaluation priority is: flag disabled → in-process override → first matching strategy → default value. This package is for runtime flag evaluation only — it is not a flag management UI or remote config service.
## When to use this skill
- Implementing or debugging code that imports `@suaveplan/feature-flags`.
- The task touches: see package README.
- You need API guidance for this package's exports.
## Quick reference
```ts
import { /* see API Reference below */ } from "@suaveplan/feature-flags";
```
## Dependencies
Workspace dependencies: `@suaveplan/error`, `@suaveplan/events`, `@suaveplan/logger`, `@suaveplan/types`
## Where to read more
This skill is intentionally short. The package's own documentation is the authoritative source — read these in order:
1. **`packages/platform/feature-flags/README.md`** — overview, install, quick-start, module index
2. **`packages/platform/feature-flags/src/**/*.md`** — co-located docs per implementation file (Purpose, Features, Basic + Advanced examples, full API reference, Implementation notes — all packages ship ≥200 words per module)
3. **`packages/platform/feature-flags/package.json`** `exports` map — every subpath you can import from
When the user asks an API question, read the relevant co-located `.md` first; do not answer from training-data memory.
## See also
- `@suaveplan/error`
- `@suaveplan/events`
- `@suaveplan/logger`
- `@suaveplan/types`
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_This SKILL.md is auto-generated by `suaveplan-skills/scripts/generate-skills.ts` from the package's README. Do not edit by hand — re-run the generator after the README changes._