Migrate from Yarn to Bun (Vite retained) - #260
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Replace Yarn with Bun across the monorepo while keeping Vite as the bundler/dev-server. The repo is now bun-only (node removed from mise) and all yarn/npm/npx references are converted. Highlights: - Root/workspace scripts use `bun run --filter=<pkg> <script>`; lockfile is `bun.lock` (yarn.lock + yarn-error.log removed). - CI (.github/workflows/ci.yml) uses oven-sh/setup-bun and `bun install --frozen-lockfile`. - Makefile, deploy.sh, cli_test.sh, README/docs converted; Firebase CLI runs via `bunx firebase`. - Core CLI ported to bun-native: cli.ts exports `main`, new cli-run.ts is the direct-run entry, and bin/django-builder imports `main` (also fixes the previously-broken bin). - bunfig.toml sets `linker = "hoisted"` so Vite/Rollup resolves firebase's deep `@firebase/app` import (bun's default symlinked store broke the v4 build). - 32 selective `**/parent/child` resolutions dropped (Bun supports only flat pins); verified bun's fresh resolution already meets every version floor. 10 flat pins kept in `overrides`. Validated: build (io+v4), lint, test_smoke, test_core (174), test_io (5), CLI parity, and the Vite dev server all pass under Bun. See docs/superpowers/specs/2026-07-04-bun-migration-design.md. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01JwrmFjP62vMVjTqCXc2rfR
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Summary
Replaces Yarn with Bun as the package manager and task runner across the monorepo. Vite is retained as the bundler/dev-server (executed through Bun). The repo is now bun-only (node removed from
mise) and everyyarn/npm/npxreference has been converted.What changed
yarn.lock+yarn-error.logremoved;bun.lockcommitted.packageManager: bun@1.3.14.bun run --filter=<pkg> <script>.bunfig.tomlsetslinker = "hoisted"so Vite/Rollup can resolve firebase's deep@firebase/appimport (bun's default symlinked store broke the djangobuilder4 build; io was unaffected as it usesfirebase/compat/app).oven-sh/setup-bun@v2+bun install --frozen-lockfile; everyyarn→bun run.Makefile,script/deploy.sh,script/cli_test.shconverted; the Firebase CLI now runs viabunx firebase.cli.tsnow exportsmain; newcli-run.tsis the direct-run entry;bin/django-builderimportsmain— which also fixes the previously-broken bin (django-builder in.json out.tarnow works).Selective resolutions
Bun 1.3.14 supports only flat overrides (not nested
resolutions/overrides). The 32**/parent/childsecurity pins were dropped after verifying Bun's fresh resolution already meets or exceeds every version floor (minimatch3.1.5/5.1.9/6.2.3/9.0.9/10.2.5,ajv6.15.0/8.20.0,path-to-regexpexpress→0.1.13 & router→8.4.2). The 10 flat pins are kept;bun.lockfreezes the tree. See thecomment:overrideskey and the spec.Validation (all pass under Bun)
bun install --frozen-lockfile— consistent, no driftbun run build(io + v4) — both build;PACKAGE_VERSIONstill injectedbun run lintbun run test— smoke ✓, core 174, v4 stub, io 5bun run cli+./bin/django-builder+make create— identical 39-entry tarVITE v6.4.3 ready, HTTP 200.bintools with no node on PATH (bun-only CI viable)Caveat
The
firebasedeploy path (Makefile deploy,deploy.sh) now usesbunx firebasebut wasn't exercised here (no CI coverage, needs Firebase auth). Verifybunx firebase --versionbefore the next deploy.Full design + outcomes:
docs/superpowers/specs/2026-07-04-bun-migration-design.md.🤖 Generated with Claude Code
https://claude.ai/code/session_01JwrmFjP62vMVjTqCXc2rfR