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feat: add svelte-shaker support and remove routes.ts convention in favor of single index.ts#74

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khromov merged 26 commits into
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svelte-shaker
Jun 7, 2026
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feat: add svelte-shaker support and remove routes.ts convention in favor of single index.ts#74
khromov merged 26 commits into
mainfrom
svelte-shaker

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@khromov khromov commented Jun 6, 2026 •
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Summary

This PR has two themes: svelte-shaker integration and removing the routes.ts convention in favor of a single index.ts entry as the source of truth.

svelte-shaker support

  • Adds optimizeWithSvelteShaker?: boolean | { exclude?: string[]; report?: boolean } to Mochi.serve() and MochiBuildOptions
  • Drives the svelte-shaker engine directly via its Node shell (svelte-shaker/node) — no Vite/Rollup plugin host needed
  • Shaking runs production only (ignored in dev); slims .svelte source via prop folding, dead-branch removal, and CSS narrowing before the Svelte compiler runs
  • exclude globs let callers opt specific components out of shaking (safe: they still count as call sites for others)
  • report logs a per-component size breakdown at build time (scanned vs slimmed counts)
  • Docs page added at packages/docs/177-svelte-shaker.md; unit tests in svelteShaker.test.ts and ComponentRegistry.shake*.test.ts

Single index.ts entry — drop the routes.ts convention

  • Build now reads config straight from the entry's Mochi.serve() call via the new extractServeOptions (a capturing serve() stub), so the prebuilt manifest stays single-sourced with the runtime
  • Removes the legacy --routes CLI flag and the routeModule serve option / auto-discovery of ./src/routes.ts
  • Dev route HMR is now entry-based: the watcher builds the entry to discover its transitive deps, and on change re-extracts routes via extractServeOptions and hot-swaps handlers in place — no restart, no special route module
  • route-module recompile trigger renamed to entry
  • Each app inlines its route map into index.ts; packages/demos/src/routes.ts and packages/minimal/src/routes.ts deleted, packages/site routes split into src/routes.ts imported by index.ts
  • Docs across packages/docs/ updated to the single-entry pattern

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Mochi review report

Try this PR

Expand instructions 
gh run download -R khromov/mochi 27104728073 -n mochi-framework-pr -D /tmp/mochi-pr && bun i /tmp/mochi-pr/mochi-framework-pr.tgz

Download manually

Dependency report

Expand report 
Direct: 13
Peer:   3 (svelte, @tailwindcss/node, @tailwindcss/oxide)
Dev:    8
Total unique packages reachable from production deps (roots + transitive): 31
Total on-disk size of those packages: 5.39 MB

Toplist — direct deps ranked by total size (self + transitive):
      total       self  count  package
    4.77 MB    2.71 MB     19  svelte
   683.7 kB   137.8 kB      3  svelte-shaker
   534.0 kB   449.0 kB      1  magic-string
   189.0 kB   146.0 kB      1  stale-while-revalidate-cache
   180.6 kB   145.3 kB      1  chokidar
    51.2 kB    51.2 kB      0  devalue
    30.4 kB    30.4 kB      0  deepmerge
    28.0 kB    28.0 kB      0  negotiator
    25.8 kB    25.8 kB      0  mitt
    25.3 kB    25.3 kB      0  js-cookie
    13.4 kB    13.4 kB      0  nanoid
    12.0 kB    12.0 kB      0  zimmerframe
     5.2 kB     5.2 kB      0  @types/negotiator

Transitive breakdown for the heaviest deps:

  svelte (19, 2.05 MB transitive): @jridgewell/gen-mapping (91.6 kB), @jridgewell/remapping (58.0 kB), @jridgewell/resolve-uri (51.9 kB), @jridgewell/sourcemap-codec (85.0 kB), @jridgewell/trace-mapping (143.3 kB), @sveltejs/acorn-typescript (194.2 kB), @types/estree (25.5 kB), @types/trusted-types (8.4 kB), acorn (545.5 kB), aria-query (172.8 kB), axobject-query (108.3 kB), clsx (8.4 kB), devalue (51.2 kB), esm-env (3.7 kB), esrap (86.1 kB), is-reference (3.9 kB), locate-character (5.2 kB), magic-string (449.0 kB), zimmerframe (12.0 kB)

  svelte-shaker (3, 545.9 kB transitive): @jridgewell/sourcemap-codec (85.0 kB), magic-string (449.0 kB), zimmerframe (12.0 kB)

  magic-string (1, 85.0 kB transitive): @jridgewell/sourcemap-codec (85.0 kB)

  stale-while-revalidate-cache (1, 43.0 kB transitive): emittery (43.0 kB)

  chokidar (1, 35.3 kB transitive): readdirp (35.3 kB)

Lines of code

packages/mochi
Category main PR Δ
src/**/*.test.ts 5856 6078 +222
src/Mochi.ts 1223 1221 -2
src/ComponentRegistry.ts 1539 1621 +82
src/build*.ts 250 258 +8
src/cli* 112 120 +8
src/{types.ts,*.d.ts} 650 675 +25
Other 2606 2750 +144
Total 17817 18304 +487

Unchanged: src/hooks.ts (235), src/{requestContext,forms,errors}.ts (298), src/{events,log,logger}.ts (338), src/consoleLogger.ts (358), src/cookies*.ts (157), src/extensions.ts (191), src/cache.ts (60), src/middleware/** (81), src/enhance*.ts (184), src/proxy.ts (125), src/{csrf,serverIslandCrypto}.ts (240), src/web-components/** (445), src/debug-bar/** (2079), src/templates/** (790).

packages/docs
Category main PR Δ
Docs 3602 3743 +141
Total 3602 3743 +141
packages/site
Category main PR Δ
Other 1306 1305 -1
Total 10026 10025 -1

Unchanged: src/demos/** (5633), src/components/** (2120), src/lib/** (941), src/stores/** (26).

packages/demos
Category main PR Δ
Other 2023 2020 -3
Total 3108 3105 -3

Unchanged: src/hn/** (1085).

packages/minimal
Category main PR Δ
Other 538 536 -2
Total 538 536 -2
packages/cli
Category main PR Δ
Total 479 479 0

Unchanged: src/**/*.test.ts (117), src/cli* (138), src/{create,templates,utils}.ts (220), Other (4).

@khromov khromov marked this pull request as ready for review June 6, 2026 21:42
@khromov khromov mentioned this pull request Jun 6, 2026
Closed
@khromov khromov changed the title feat: add optimizeWithSvelteShaker option for production tree-shaking feat: add svelte-shaker support Jun 7, 2026
@khromov khromov changed the title feat: add svelte-shaker support feat: add svelte-shaker support and remove routes.ts convention in favor of single index.ts Jun 7, 2026
@khromov khromov merged commit ec4487f into main Jun 7, 2026
6 checks passed
@khromov khromov deleted the svelte-shaker branch June 7, 2026 21:08
@github-actions github-actions Bot mentioned this pull request Jun 7, 2026
Merged
khromov pushed a commit that referenced this pull request Jun 7, 2026
@github-actions
chore: release main (#73)
7bea6d1 
🤖 I have created a release *beep* *boop*
---


<details><summary>mochi-framework: 0.6.0</summary>

##
[0.6.0](mochi-framework-v0.5.1...mochi-framework-v0.6.0)
(2026-06-07)


### Features

* add svelte-shaker support and remove routes.ts convention in favor of
single index.ts ([#74](#74))
([ec4487f](ec4487f))
* added a new "info" tab to debug bar showing runtime versions and mochi
configuration
([a6a1792](a6a1792))


### Bug Fixes

* **mochi-framework:** various hmr edge case fixes
([ecb627d](ecb627d))
* trigger hmr when shell.html is edited
([#72](#72))
([d519b89](d519b89))
* various hmr edge case fixes
([79048e3](79048e3))
</details>

<details><summary>create-mochi: 0.2.4</summary>

##
[0.2.4](create-mochi-v0.2.3...create-mochi-v0.2.4)
(2026-06-07)


### Bug Fixes

* **mochi-framework:** various hmr edge case fixes
([ecb627d](ecb627d))
* various hmr edge case fixes
([79048e3](79048e3))
</details>

---
This PR was generated with [Release
Please](https://github.com/googleapis/release-please). See
[documentation](https://github.com/googleapis/release-please#release-please).

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
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@khromov