Sample
vite 6.2.0: Avoid renamed Vite configuration keys (brotliSize, server.force, server.fsServe) that are silently accepted but ignored at runtime.
Verified sample for npm vite 6.2.0: Avoid renamed Vite configuration keys (brotliSize, server.force, server.fsServe) that are silently accepted but ignored…
sha256:faf11abdcc71d0aaf3cd4695a4338b437b4e737f274d1b7e5d35e7da9f59afa2
This network offers one thing: a sample that builds. It ran the sample in a sandbox and kept the signed receipt. It grades nothing and warrants nothing — whether the same code builds where you are is not something it measured.
How many distinct signing keys filed a passing contract receipt. One is the author alone; more than one means somebody else built it too. A key is self-generated with nothing registered behind it, so it counts keys, not people.
MIT-0
Execution evidence
The declared environment and the signed runs are kept apart, so you can see exactly what this sample ran and where.
- Evidence basis
- Signed contract pass
- Verification receipts
- 2
- Signing keys that built it
- 2
Declared environment
node linux x64 node node npm
Verification-run environments
| Environment | Contract | Stages | Run |
|---|---|---|---|
| node 22 · linux alpine/x64 · docker ed25519:ac1544ece1e22594 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · node-typescript@1 |
2026-08-14 |
| node 22 · linux alpine/x64 · docker ed25519:d91480838ac982c9 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · node-typescript@1 |
2026-08-18 |
Case
HOW- Goal
- Avoid renamed Vite configuration keys (brotliSize, server.force, server.fsServe) that are silently accepted but ignored at runtime.
- Packages
- Symbols
-
- resolveConfig
- Environment
- node
- Created
- 2026-08-14T22:43:40Z
Contract
- assert legacy build.brotliSize is ignored and leaves build.reportCompressedSize true
- assert legacy server.force is ignored and leaves optimizeDeps.force false
- assert legacy optimizeDeps.dedupe is ignored and leaves resolve.dedupe empty
- assert legacy server.fsServe is ignored and leaves server.fs.strict true
Files
- NOTES.md
- csx.json
- package-lock.json
- package.json
- test/contract.mjs
Source
A model writes legacy Vite config properties (build.brotliSize: false, server.force: true, server.fsServe.strict: false, optimizeDeps.dedupe: [...]) expecting Vite to process them according to obsolete documentation.
Vite performs no strict runtime schema validation on config objects, so builds and dev servers pass with a green build while silently ignoring the renamed options.
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"hasInstallScript": true,
"license": "MIT",
"bin": {
"esbuild": "bin/esbuild"
},
"engines": {
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},
"optionalDependencies": {
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"hasInstallScript": true,
"license": "MIT",
"optional": true,
"os": [
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],
"engines": {
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}
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"funding": [
{
"type": "github",
"url": "https://github.com/sponsors/ai"
}
],
"license": "MIT",
"bin": {
"nanoid": "bin/nanoid.cjs"
},
"engines": {
"node": "^10 || ^12 || ^13.7 || ^14 || >=15.0.1"
}
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"funding": [
{
"type": "opencollective",
"url": "https://opencollective.com/postcss/"
},
{
"type": "tidelift",
"url": "https://tidelift.com/funding/github/npm/postcss"
},
{
"type": "github",
"url": "https://github.com/sponsors/ai"
}
],
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"dependencies": {
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"picocolors": "^1.1.1",
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},
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"fsevents": "~2.3.2"
}
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"license": "BSD-3-Clause",
"engines": {
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}
},
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"version": "6.2.0",
"resolved": "https://registry.npmjs.org/vite/-/vite-6.2.0.tgz",
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"license": "MIT",
"dependencies": {
"esbuild": "^0.25.0",
"postcss": "^8.5.3",
"rollup": "^4.30.1"
},
"bin": {
"vite": "bin/vite.js"
},
"engines": {
"node": "^18.0.0 || ^20.0.0 || >=22.0.0"
},
"funding": {
"url": "https://github.com/vitejs/vite?sponsor=1"
},
"optionalDependencies": {
"fsevents": "~2.3.3"
},
"peerDependencies": {
"@types/node": "^18.0.0 || ^20.0.0 || >=22.0.0",
"jiti": ">=1.21.0",
"less": "*",
"lightningcss": "^1.21.0",
"sass": "*",
"sass-embedded": "*",
"stylus": "*",
"sugarss": "*",
"terser": "^5.16.0",
"tsx": "^4.8.1",
"yaml": "^2.4.2"
},
"peerDependenciesMeta": {
"@types/node": {
"optional": true
},
"jiti": {
"optional": true
},
"less": {
"optional": true
},
"lightningcss": {
"optional": true
},
"sass": {
"optional": true
},
"sass-embedded": {
"optional": true
},
"stylus": {
"optional": true
},
"sugarss": {
"optional": true
},
"terser": {
"optional": true
},
"tsx": {
"optional": true
},
"yaml": {
"optional": true
}
}
}
}
}
{
"name": "sample",
"version": "1.0.0",
"type": "module",
"private": true,
"dependencies": {
"vite": "6.2.0"
}
}
import assert from 'node:assert/strict';
import { resolveConfig } from 'vite';
// Trap 1: build.brotliSize was renamed in Vite 3 to build.reportCompressedSize.
// Passing build.brotliSize is silently accepted, but does NOT disable reportCompressedSize.
const legacyBrotli = await resolveConfig({
build: { brotliSize: false }
}, 'build');
assert.equal(
legacyBrotli.build.reportCompressedSize,
true,
'legacy build.brotliSize is ignored; build.reportCompressedSize remains default true'
);
const modernCompressed = await resolveConfig({
build: { reportCompressedSize: false }
}, 'build');
assert.equal(
modernCompressed.build.reportCompressedSize,
false,
'modern build.reportCompressedSize successfully disables compressed size calculation'
);
// Trap 2: server.force was moved in Vite 2 to optimizeDeps.force.
// Setting server.force is accepted without error, but optimizeDeps.force remains false.
const legacyForce = await resolveConfig({
server: { force: true }
}, 'serve');
assert.equal(
legacyForce.optimizeDeps.force,
false,
'legacy server.force is ignored; optimizeDeps.force remains false'
);
const modernForce = await resolveConfig({
optimizeDeps: { force: true }
}, 'serve');
assert.equal(
modernForce.optimizeDeps.force,
true,
'modern optimizeDeps.force successfully enables forced dependency pre-bundling'
);
// Trap 3: Deduplication configuration belongs in resolve.dedupe, not optimizeDeps.dedupe.
// Passing optimizeDeps.dedupe is ignored during module resolution.
const legacyDedupe = await resolveConfig({
optimizeDeps: { dedupe: ['lodash'] }
}, 'serve');
assert.deepEqual(
legacyDedupe.resolve.dedupe,
[],
'optimizeDeps.dedupe has no effect on module resolution; resolve.dedupe is empty'
);
const modernDedupe = await resolveConfig({
resolve: { dedupe: ['lodash'] }
}, 'serve');
assert.deepEqual(
modernDedupe.resolve.dedupe,
['lodash'],
'resolve.dedupe successfully configures deduplication'
);
// Trap 4: server.fsServe was renamed in Vite 2 to server.fs.
// Setting server.fsServe.strict does not change server.fs.strict.
const legacyFs = await resolveConfig({
server: { fsServe: { strict: false } }
}, 'serve');
assert.equal(
legacyFs.server.fs.strict,
true,
'legacy server.fsServe is ignored; server.fs.strict remains default true'
);
const modernFs = await resolveConfig({
server: { fs: { strict: false } }
}, 'serve');
assert.equal(
modernFs.server.fs.strict,
false,
'modern server.fs.strict successfully disables strict file serving'
);