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Monorepo Changelog

Top-level changes that are not tied to a single published package — build system, monorepo orchestration, lint/format, dev workflow. Per-package runtime and API changes live in each package's own CHANGELOG.md.

The format is loosely based on Keep a Changelog.

2026-05-09 — CI action versions bumped

  • GitHub Actions: upgraded actions/checkout v4 → v6, actions/setup-node v4 → v6, and pnpm/action-setup v4 → v6 in both .github/workflows/ci.yml and .github/workflows/deploy.yml. Node version pinned at 24 (latest).

2026-05-09 — Build-system renewal

  • Monorepo orchestrator: replaced nx 19 with turborepo 2.9. Removed nx.json and all per-package project.json files. Pipeline now in turbo.json.
  • Lint + format: replaced eslint 8 + prettier 3 (and 9 plugins) with biome 2.4. Single config at biome.json. Removed .eslintrc.json, .eslintignore, .prettierrc, .prettierignore.
  • Dependency-version SSOT: introduced pnpm catalog: (in pnpm-workspace.yaml). All workspace package.json files reference shared deps via "<dep>": "catalog:". The makePackageJson.mjs publish helper resolves catalog: refs alongside workspace:*.
  • TypeScript: bumped to 6.0. Dropped deprecated baseUrl and downlevelIteration from the root tsconfig.json.
  • Build: unified packages/shadow-objects build into a single build.mjs (esbuild transpile + tsc emit-only declarations + esbuild inline-worker bundle + makePackageJson). Removed tsconfig.bundle.json, tsconfig.tests.json, bundle.mjs, the run-s/rimraf script chain, and the intermediate build/ directory.
  • Test runners: consolidated on vitest 4.
    • Core lib (shadow-objects): vitest reads *.spec.ts directly (no precompile step). Removed the generated tests/ tree.
    • Integration (shadow-objects-testing): switched from @web/test-runner to vitest browser mode with the Playwright provider (real Chromium for accurate Custom Elements semantics). Chai assertion style preserved via @esm-bundle/chai.
    • Canvas (shae-offscreen-canvas): switched from @web/test-runner to vitest + happy-dom.
    • Shared vitest.setup.ts patches Node 24+'s inert localStorage/sessionStorage globals (which shadow happy-dom's working Storage) and shims mocha's after/before to vitest's afterAll/beforeAll for migrated specs.
  • Tooling bumps: esbuild 0.27 → 0.28, @playwright/test 1.58 → 1.59, happy-dom 14 → 20, added jsdom 29 as backup env.
  • Dropped devDeps: nx, @nx/*, eslint*, @typescript-eslint/*, prettier*, npm-run-all, @rollup/plugin-node-resolve, react, @types/react, @web/test-runner (workspace-wide).

Verification

  • dist/ of @spearwolf/shadow-objects is byte-compatible with the previous version (file list identical except for the removal of an accidentally-published tsconfig.lib.tsbuildinfo; dist/package.json byte-identical). Snapshots: docs/superpowers/specs/dist-snapshot.txt, docs/superpowers/specs/dist-package.json.snapshot.
  • Cold full cycle (pnpm cbt): ~7.6 s for clean + build + test + e2e (7 turbo tasks, 191 unit/integration + 32 e2e). Warm cache: ~70 ms (FULL TURBO).
  • Design doc: docs/superpowers/specs/2026-05-09-build-system-renewal-design.md.