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[cd] Use SemVer prerelease type for NPM dist-tag#94622

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sebbie/less-tag-hardcoding
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[cd] Use SemVer prerelease type for NPM dist-tag#94622
eps1lon wants to merge 2 commits into
canaryfrom
sebbie/less-tag-hardcoding

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@eps1lon

@eps1lon eps1lon commented Jun 9, 2026

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...or, if it's not a prerelase, use latest if it's the highest version or backport otherwise

Removes one more place where the tags are hardcoded. We always mirrored SemVer prerelease types and NPM dist tags (except how stable releases are handled). We can just use the SemVer prerelease as the source of truth to avoid future mistakes.

Now we also undraft any prerelease not just canary (felt like an oversight from previous changes).

Also includes [cd] Allow tagging semver-lower releases as @latest if @latest points at a prerelease

test plan

with different versions in lerna.json

$ node scripts/publish-release.js
Publishing 16.3.0
Publishing as "latest" dist tag...
$ node scripts/publish-release.js
Publishing 16.1.500
Publishing as "backport" dist tag...
$ node scripts/publish-release.js
Publishing 16.3.0-preview.0
Publishing as "preview" dist tag...
$ node scripts/publish-release.js
Publishing 16.3.0-beta.0
Publishing as "beta" dist tag...
$ node scripts/publish-release.js
Publishing 16.3.0-canary.0
Publishing as "canary" dist tag..

...or, if it's not a prerelase, use `latest` if it's the highest version or `backport` otherwise
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Stats from current PR

✅ No significant changes detected

📊 All Metrics
📖 Metrics Glossary

Dev Server Metrics:

  • Listen = TCP port starts accepting connections
  • First Request = HTTP server returns successful response
  • Cold = Fresh build (no cache)
  • Warm = With cached build artifacts

Build Metrics:

  • Fresh = Clean build (no .next directory)
  • Cached = With existing .next directory

Change Thresholds:

  • Time: Changes < 50ms AND < 10%, OR < 2% are insignificant
  • Size: Changes < 1KB AND < 1% are insignificant
  • All other changes are flagged to catch regressions

⚡ Dev Server

Metric Canary PR Change Trend
Cold (Listen) 810ms 809ms ▂▅▂▄▂
Cold (Ready in log) 789ms 788ms ▄▄▂▄▃
Cold (First Request) 1.221s 1.215s ▃▄▃▃▂
Warm (Listen) 811ms 810ms ▂▇▅▁▂
Warm (Ready in log) 791ms 789ms ▄▅▃▆▄
Warm (First Request) 614ms 609ms ▅▆▃▆▄
📦 Dev Server (Webpack) (Legacy)

📦 Dev Server (Webpack)

Metric Canary PR Change Trend
Cold (Listen) 811ms 811ms █████
Cold (Ready in log) 783ms 783ms █████
Cold (First Request) 3.174s 3.227s ▆▇▇█▇
Warm (Listen) 811ms 811ms █████
Warm (Ready in log) 783ms 783ms █████
Warm (First Request) 3.186s 3.212s ▇▇▇█▇

⚡ Production Builds

Metric Canary PR Change Trend
Fresh Build 5.055s 5.049s ▂▃▁▁▁
Cached Build 5.058s 5.073s ▂▂▂▁▁
📦 Production Builds (Webpack) (Legacy)

📦 Production Builds (Webpack)

Metric Canary PR Change Trend
Fresh Build 24.191s 24.566s ▇████
Cached Build 24.141s 24.113s ▇▇▇█▇
node_modules Size 510 MB 510 MB █████
📦 Bundle Sizes

Bundle Sizes

⚡ Turbopack

Client

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Server

Edge SSR
Canary PR Change
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page.js gzip 280 kB 280 kB
Total 406 kB 407 kB ⚠️ +650 B
Middleware
Canary PR Change
middleware-b..fest.js gzip 614 B 615 B
middleware-r..fest.js gzip 156 B 155 B
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Total 719 B 717 B ✅ -2 B
Build Cache
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0.pack gzip 4.56 MB 4.55 MB 🟢 5.42 kB (0%)
index.pack gzip 114 kB 115 kB 🔴 +1.23 kB (+1%)
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Total 4.79 MB 4.79 MB ✅ -1.74 kB

🔄 Shared (bundler-independent)

Runtimes
Canary PR Change
app-page-exp...dev.js gzip 356 kB 356 kB
app-page-exp..prod.js gzip 197 kB 197 kB
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📎 Tarball URL
https://vercel-packages.vercel.app/next/commits/f740d40c596fc1dc83937e5bec1aa79886b9baf1/next

Commit: f740d40

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Failing test suites

Commit: f740d40 | About building and testing Next.js

pnpm test-start test/production/create-next-app/package-manager/yarn.test.ts (job)

  • create-next-app with package manager yarn > should use yarn for --use-yarn flag with example (DD)
  • create-next-app with package manager yarn > should use yarn when user-agent is yarn with example (DD)
Expand output

● create-next-app with package manager yarn › should use yarn for --use-yarn flag with example

expect(received).toBe(expected) // Object.is equality

Expected: true
Received: false

  94 |   for (const file of files) {
  95 |     try {
> 96 |       expect(existsSync(resolve(projectRoot, file))).toBe(true)
     |                                                      ^
  97 |     } catch (err) {
  98 |       require('console').error(
  99 |         `missing expected file ${file}`,

  at toBe (production/create-next-app/lib/utils.ts:96:54)
  at production/create-next-app/package-manager/yarn.test.ts:100:30
  at useTempDir (lib/use-temp-dir.ts:24:5)
  at Object.<anonymous> (production/create-next-app/package-manager/yarn.test.ts:91:5)

● create-next-app with package manager yarn › should use yarn when user-agent is yarn with example

expect(received).toBe(expected) // Object.is equality

Expected: true
Received: false

  94 |   for (const file of files) {
  95 |     try {
> 96 |       expect(existsSync(resolve(projectRoot, file))).toBe(true)
     |                                                      ^
  97 |     } catch (err) {
  98 |       require('console').error(
  99 |         `missing expected file ${file}`,

  at toBe (production/create-next-app/lib/utils.ts:96:54)
  at production/create-next-app/package-manager/yarn.test.ts:121:30
  at useTempDir (lib/use-temp-dir.ts:24:5)
  at Object.<anonymous> (production/create-next-app/package-manager/yarn.test.ts:109:5)

pnpm test-start test/production/app-dir/metadata-static-route-cache/metadata-static-route-cache.test.ts (job)

  • app dir - metadata static routes cache > should generate different content after replace the static metadata file (DD)
Expand output

● app dir - metadata static routes cache › should generate different content after replace the static metadata file

next already started

  65 |   ) {
  66 |     if (this.childProcess) {
> 67 |       throw new Error('next already started')
     |             ^
  68 |     }
  69 |
  70 |     this._cliOutput = ''

  at NextStartInstance.start (lib/next-modes/next-start.ts:67:13)
  at Object.start (production/app-dir/metadata-static-route-cache/metadata-static-route-cache.test.ts:17:16)

pnpm test-start-turbo test/production/create-next-app/package-manager/yarn.test.ts (turbopack) (job)

  • create-next-app with package manager yarn > should use yarn for --use-yarn flag with example (DD)
  • create-next-app with package manager yarn > should use yarn when user-agent is yarn with example (DD)
Expand output

● create-next-app with package manager yarn › should use yarn for --use-yarn flag with example

expect(received).toBe(expected) // Object.is equality

Expected: true
Received: false

  94 |   for (const file of files) {
  95 |     try {
> 96 |       expect(existsSync(resolve(projectRoot, file))).toBe(true)
     |                                                      ^
  97 |     } catch (err) {
  98 |       require('console').error(
  99 |         `missing expected file ${file}`,

  at toBe (production/create-next-app/lib/utils.ts:96:54)
  at production/create-next-app/package-manager/yarn.test.ts:100:30
  at useTempDir (lib/use-temp-dir.ts:24:5)
  at Object.<anonymous> (production/create-next-app/package-manager/yarn.test.ts:91:5)

● create-next-app with package manager yarn › should use yarn when user-agent is yarn with example

expect(received).toBe(expected) // Object.is equality

Expected: true
Received: false

  94 |   for (const file of files) {
  95 |     try {
> 96 |       expect(existsSync(resolve(projectRoot, file))).toBe(true)
     |                                                      ^
  97 |     } catch (err) {
  98 |       require('console').error(
  99 |         `missing expected file ${file}`,

  at toBe (production/create-next-app/lib/utils.ts:96:54)
  at production/create-next-app/package-manager/yarn.test.ts:121:30
  at useTempDir (lib/use-temp-dir.ts:24:5)
  at Object.<anonymous> (production/create-next-app/package-manager/yarn.test.ts:109:5)

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