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Replace dumble with tsdown for JS bundling

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dumble (0.2.x, ~530 dl/wk, single-maintainer) was a bus-factor risk as
the load-bearing bundler. tsdown (rolldown-based, ~2.5M dl/wk, actively
maintained) replaces it while output stays list-identical, verified by
snapshot diff: 17 JS bundles, externals preserved, schemastery dual
.mjs/.cjs and logger-console node+browser entries intact.

Root tsdown.config.ts uses workspace globs ['vendor/*', 'packages/*']
(explicit, so examples/* stays excluded); two per-package overrides in
vendor/ cover the special shapes and are logged in vendor/README.md as
ours (not upstream sync surface). scripts/build.ts (dumble
orchestration) is deleted; yarn build = tsc -b && tsdown. tsc -b keeps
owning declarations (dts: false, clean: false).

Rationale recorded in ADR 0008 (also covers the direct-esbuild and
pkgroll alternatives).

Gates: lint, typecheck, 134 tests, hygiene (knip/publint/constraints),
demo smoke all green.
This commit is contained in:
Tianyi Cui
2026-06-11 22:08:10 +08:00
parent 4dafad4db6
commit 630bbddf9a
11 changed files with 590 additions and 246 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
AGENTS.md
View File

@@ -32,7 +32,9 @@ examples/ Runnable demos (not workspaces). echo-agent = mock model + echo
docs/ architecture.md — the design doc. adr/ — decision records (the
why behind vendoring, event-sourcing, the schema DSL, …).
rfc/ — proposals for substantial future work.
scripts/ build.ts — dumble JS bundling for all packages.
scripts/ repo maintenance scripts (vendor-manifest guard, publint runner).
JS bundling is tsdown (root tsdown.config.ts + two per-package
overrides in vendor/).
```
## Commands
@@ -41,7 +43,7 @@ scripts/ build.ts — dumble JS bundling for all packages.
yarn install # Yarn 4 workspaces (node-modules linker), node >= 24
yarn test # vitest run (packages/*/tests/**/*.spec.ts)
yarn typecheck # tsc -b tsconfig.build.json (declarations only)
yarn build # typecheck + dumble JS bundles into each package's lib/
yarn build # typecheck + tsdown JS bundles into each package's lib/
yarn demo # run examples/echo-agent (needs --expose-internals, the
# script passes it; type "echo hi" to see a tool call)
```