@contractspec/lib.progressive-delivery

Progressive delivery and canary release primitives. Provides strategy definitions and rollout logic for safe, incremental deployments.

What It Provides

• Layer: lib.
• Consumers: bundles.
• Related ContractSpec packages include @contractspec/lib.observability, @contractspec/tool.bun, @contractspec/tool.typescript.
• Related ContractSpec packages include @contractspec/lib.observability, @contractspec/tool.bun, @contractspec/tool.typescript.

Installation

npm install @contractspec/lib.progressive-delivery

or

bun add @contractspec/lib.progressive-delivery

Usage

Import the root entrypoint from @contractspec/lib.progressive-delivery, or choose a documented subpath when you only need one part of the package surface.

Architecture

• src/canary-analyzer.ts is part of the package's public or composition surface.
• src/canary-controller.ts is part of the package's public or composition surface.
• src/deployment-coordinator.ts is part of the package's public or composition surface.
• src/events.ts is package-level event definitions.
• src/feature-flags.ts is part of the package's public or composition surface.
• src/index.ts is the root public barrel and package entrypoint.
• src/rollback-manager.ts is part of the package's public or composition surface.

Public Entry Points

• Export . resolves through ./src/index.ts.

Local Commands

• bun run dev — contractspec-bun-build dev
• bun run build — bun run prebuild && bun run build:bundle && bun run build:types
• bun run lint — bun lint:fix
• bun run lint:check — biome check .
• bun run lint:fix — biome check --write --unsafe --only=nursery/useSortedClasses . && biome check --write .
• bun run typecheck — tsc --noEmit
• bun run publish:pkg — bun publish --tolerate-republish --ignore-scripts --verbose
• bun run publish:pkg:canary — bun publish:pkg --tag canary
• bun run clean — rimraf dist .turbo
• bun run build:bundle — contractspec-bun-build transpile
• bun run build:types — contractspec-bun-build types
• bun run prebuild — contractspec-bun-build prebuild

Recent Updates

• Replace eslint+prettier by biomejs to optimize speed.

Notes

• Delivery strategies must be deterministic — same input must produce same rollout decision.
• Peer dependency on observability; ensure OTel integration stays aligned.
• Strategy interface changes affect all deployment pipelines consuming this lib.