Files
Sidharth VinodandClaude Fable 5 d2f067a540 refactor: Route every input state mutation through one untracked gateway
The untrack()/persistAndProcess() pair was a per-function convention:
each update function had to remember both, a forgotten untrack would let
calling effects subscribe to input state (the bug fixed in 6a9a306e),
and a forgotten persistAndProcess would silently skip persistence and
re-validation. A single update(mutate) gateway now makes both structural,
and the scattered untrack calls (three of which were dead) are gone.

Also:
- Export inputState as Readonly<State> so writes outside the update
  functions are type errors instead of comment violations.
- Share the 'codeStore' key as a constant instead of two literals.
- Reuse validatedStateOf() in processState instead of duplicating the
  validated-state defaults.
- Use $state.raw for validatedCurrent: it is only ever replaced
  wholesale, so deep proxying every published state was pure overhead.

The new state.svelte.test.ts pins the invariants: update functions never
make a calling effect track input state, and every mutation persists.
Vitest needed resolve.conditions=['browser'] for those tests — it was
loading Svelte's server build, where $effect is a no-op.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
2026-06-10 23:57:01 +05:30

57 lines
1.6 KiB
JavaScript

import tailwindcss from '@tailwindcss/vite';
import { sveltekit } from '@sveltejs/kit/vite';
import { FileSystemIconLoader } from 'unplugin-icons/loaders';
import Icons from 'unplugin-icons/vite';
import { defineConfig } from 'vite';
import devtoolsJson from 'vite-plugin-devtools-json';
/**
* HMR creates state inconsistencies, so we always reload the page.
* @type {import('vite').PluginOption} PluginOption
*/
const alwaysFullReload = {
name: 'always-full-reload',
handleHotUpdate({ server }) {
server.ws.send({ type: 'full-reload' });
return [];
}
};
export default defineConfig({
plugins: [
tailwindcss(),
sveltekit(),
Icons({
compiler: 'svelte',
customCollections: {
custom: FileSystemIconLoader('./static/icons')
}
}),
alwaysFullReload,
devtoolsJson()
],
envPrefix: 'MERMAID_',
server: { port: 3000, host: true },
preview: { port: 3000, host: true },
// Vitest otherwise resolves Svelte's server build, where $effect is a no-op.
resolve: process.env.VITEST ? { conditions: ['browser'] } : undefined,
test: {
environment: 'jsdom',
// in-source testing
includeSource: ['src/**/*.{js,ts,svelte}'],
// Ignore E2E tests
exclude: [
'tests/**/*',
'**/node_modules/**',
'**/dist/**',
'**/.{idea,git,cache,output,temp}/**',
'**/{karma,rollup,webpack,vite,vitest,jest,ava,babel,nyc,cypress,tsup,build,eslint,prettier}.config.*'
],
setupFiles: ['./src/tests/setup.ts'],
coverage: {
exclude: ['src/mocks', '.svelte-kit', 'src/**/*.test.ts'],
reporter: ['text', 'json', 'html', 'lcov']
}
}
});