Turbopack: Add TransientEnvMap to avoid persisting env vars in cache by sokra · Pull Request #90526 · vercel/next.js

sokra · 2026-02-25T15:05:20Z

What?

Introduces a new TransientEnvMap type and changes ProcessEnv::read_all() to return Vc<TransientEnvMap> instead of Vc<EnvMap>.

Why?

EnvMap uses default (auto) serialization, which means all process environment variables — including secrets like API keys and tokens — could be written to the persistent disk cache. TransientEnvMap uses serialization = "none", ensuring env vars are never persisted and must always be read fresh from the process environment on cache restore.

How?

Added TransientEnvMap in turbo-tasks-env/src/lib.rs: a transparent wrapper around FxIndexMap<RcStr, RcStr> with serialization = "none"
Changed ProcessEnv::read_all() trait method return type from Vc<EnvMap> → Vc<TransientEnvMap>
Updated all 7 implementations of ProcessEnv::read_all() (EnvMap, CommandLineProcessEnv, CustomProcessEnv, FilterProcessEnv, DotenvProcessEnv, TryDotenvProcessEnv, EmbeddableProcessEnv)
Updated helper functions (case_insensitive_read, to_uppercase_map, common_node_env) to work with TransientEnvMap
EnvMap (serializable) is kept for config-derived env maps like next.config.js env and edge_env

Introduces TransientEnvMap (serialization = "none") and changes ProcessEnv::read_all() to return it instead of EnvMap. This prevents environment variables (which may contain secrets) from being stored in the persistent disk cache. EnvMap (serializable) is kept for config-derived env maps such as next.config.js env and edge_env.

vercel · 2026-02-25T15:05:26Z

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Project	Deployment	Actions	Updated (UTC)
next-js	Error		Feb 25, 2026 3:05pm

nextjs-bot · 2026-02-25T15:21:47Z

Failing test suites

Commit: 72255e1 | About building and testing Next.js

pnpm test-start-turbo test/e2e/app-dir/nx-handling/nx-handling.test.ts (turbopack) (job)

nx-handling > should work for pages page (DD)
nx-handling > should work for pages API (DD)
nx-handling > should work with app page (DD)
nx-handling > should work with app route (DD)

Expand output

● nx-handling › should work for pages page

next start exited unexpectedly with code/signal 130

  151 |               require('console').error(message)
  152 |             }
> 153 |             reject(new Error(message))
      |                    ^
  154 |           }
  155 |         })
  156 |

  at ChildProcess.<anonymous> (lib/next-modes/next-start.ts:153:20)

● nx-handling › should work for pages API

next start exited unexpectedly with code/signal 130

  151 |               require('console').error(message)
  152 |             }
> 153 |             reject(new Error(message))
      |                    ^
  154 |           }
  155 |         })
  156 |

  at ChildProcess.<anonymous> (lib/next-modes/next-start.ts:153:20)

● nx-handling › should work with app page

next start exited unexpectedly with code/signal 130

  151 |               require('console').error(message)
  152 |             }
> 153 |             reject(new Error(message))
      |                    ^
  154 |           }
  155 |         })
  156 |

  at ChildProcess.<anonymous> (lib/next-modes/next-start.ts:153:20)

● nx-handling › should work with app route

next start exited unexpectedly with code/signal 130

  151 |               require('console').error(message)
  152 |             }
> 153 |             reject(new Error(message))
      |                    ^
  154 |           }
  155 |         })
  156 |

  at ChildProcess.<anonymous> (lib/next-modes/next-start.ts:153:20)

pnpm test-start-turbo test/e2e/app-dir/segment-cache/revalidation/segment-cache-revalidation.test.ts (turbopack) (job)

layout sharing in non-static prefetches > full prefetches should omit layouts that were already prefetched with a full prefetch (DD)

Expand output

● layout sharing in non-static prefetches › full prefetches should omit layouts that were already prefetched with a full prefetch

thrown: "Exceeded timeout of 60000 ms for a test.
Add a timeout value to this test to increase the timeout, if this is a long-running test. See https://jestjs.io/docs/api#testname-fn-timeout."

  50 |       }
  51 |
> 52 |       const result = Reflect.apply(target, thisArg, args)
     |                              ^
  53 |       return typeof result === 'function' ? wrapJestTestFn(result) : result
  54 |     },
  55 |     get(target, prop, receiver) {

  at Object.apply (lib/e2e-utils/index.ts:52:30)
  at it (e2e/app-dir/segment-cache/prefetch-layout-sharing/prefetch-layout-sharing.test.ts:121:3)
  at Object.describe (e2e/app-dir/segment-cache/prefetch-layout-sharing/prefetch-layout-sharing.test.ts:6:1)

pnpm test-start test/e2e/app-dir/app-prefetch/prefetching.test.ts (job)

app dir - prefetching > should show layout eagerly when prefetched with loading one level down (DD)
app dir - prefetching > should immediately render the loading state for a dynamic segment when fetched from higher up in the tree (DD)

Expand output

● app dir - prefetching › should show layout eagerly when prefetched with loading one level down

thrown: "Exceeded timeout of 60000 ms for a test.
Add a timeout value to this test to increase the timeout, if this is a long-running test. See https://jestjs.io/docs/api#testname-fn-timeout."

  50 |       }
  51 |
> 52 |       const result = Reflect.apply(target, thisArg, args)
     |                              ^
  53 |       return typeof result === 'function' ? wrapJestTestFn(result) : result
  54 |     },
  55 |     get(target, prop, receiver) {

  at Object.apply (lib/e2e-utils/index.ts:52:30)
  at it (e2e/app-dir/app-prefetch/prefetching.test.ts:28:3)
  at Object.describe (e2e/app-dir/app-prefetch/prefetching.test.ts:11:1)

● app dir - prefetching › should immediately render the loading state for a dynamic segment when fetched from higher up in the tree

thrown: "Exceeded timeout of 60000 ms for a test.
Add a timeout value to this test to increase the timeout, if this is a long-running test. See https://jestjs.io/docs/api#testname-fn-timeout."

  50 |       }
  51 |
> 52 |       const result = Reflect.apply(target, thisArg, args)
     |                              ^
  53 |       return typeof result === 'function' ? wrapJestTestFn(result) : result
  54 |     },
  55 |     get(target, prop, receiver) {

  at Object.apply (lib/e2e-utils/index.ts:52:30)
  at it (e2e/app-dir/app-prefetch/prefetching.test.ts:304:3)
  at Object.describe (e2e/app-dir/app-prefetch/prefetching.test.ts:11:1)

pnpm test-start-turbo test/e2e/app-dir/app-client-cache/client-cache.parallel-routes.test.ts (turbopack) (job)

filesystem-caching with cache enabled > should cache or not cache loaders (DD)
filesystem-caching with cache enabled > should allow to change files while stopped (RSC change) (DD)
filesystem-caching with cache enabled > should allow to change files while stopped (RCC change) (DD)
filesystem-caching with cache enabled > should allow to change files while stopped (Pages change) (DD)
filesystem-caching with cache enabled > should allow to change files while stopped (rename app page) (DD)
filesystem-caching with cache enabled > should allow to change files while stopped (next config change) (DD)
filesystem-caching with cache enabled > should allow to change files while stopped (env var change) (DD)
filesystem-caching with cache enabled > should allow to change files while stopped (RSC change, RCC change, Pages change, rename app page, next config change, env var change) (DD)

Expand output

● filesystem-caching with cache enabled › should cache or not cache loaders

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

Expected: "Timestamp = 1772033621972"
Received: "Timestamp = 1772033626640"

  145 |           expect(newTimestamp).toMatch(/Timestamp = \d+$/)
  146 |           if (cacheEnabled) {
> 147 |             expect(newTimestamp).toBe(appTimestamp)
      |                                  ^
  148 |           } else {
  149 |             expect(newTimestamp).not.toBe(appTimestamp)
  150 |           }

  at Object.toBe (e2e/filesystem-cache/filesystem-cache.test.ts:147:34)

● filesystem-caching with cache enabled › should allow to change files while stopped (RSC change)

expect(received).toEqual(expected) // deep equality

Expected: "Timestamp = 1772033634476"
Received: "Timestamp = 1772033630529"

  349 |               const browser = await next.browser('/unchanged')
  350 |               const timestamp = await browser.elementByCss('main').text()
> 351 |               expect(unchangedTimestamp).toEqual(timestamp)
      |                                          ^
  352 |               await browser.close()
  353 |             }
  354 |           }

  at toEqual (e2e/filesystem-cache/filesystem-cache.test.ts:351:42)
  at inner (e2e/filesystem-cache/filesystem-cache.test.ts:361:13)
  at NextStartInstance.patchFile (lib/next-modes/base.ts:742:9)
  at Object.withChange (e2e/filesystem-cache/filesystem-cache.test.ts:213:9)
  at Object.<anonymous> (e2e/filesystem-cache/filesystem-cache.test.ts:375:11)

● filesystem-caching with cache enabled › should allow to change files while stopped (RCC change)

expect(received).toEqual(expected) // deep equality

Expected: "Timestamp = 1772033643154"
Received: "Timestamp = 1772033638808"

  349 |               const browser = await next.browser('/unchanged')
  350 |               const timestamp = await browser.elementByCss('main').text()
> 351 |               expect(unchangedTimestamp).toEqual(timestamp)
      |                                          ^
  352 |               await browser.close()
  353 |             }
  354 |           }

  at toEqual (e2e/filesystem-cache/filesystem-cache.test.ts:351:42)
  at inner (e2e/filesystem-cache/filesystem-cache.test.ts:361:13)
  at NextStartInstance.patchFile (lib/next-modes/base.ts:742:9)
  at Object.withChange (e2e/filesystem-cache/filesystem-cache.test.ts:213:9)
  at Object.<anonymous> (e2e/filesystem-cache/filesystem-cache.test.ts:375:11)

● filesystem-caching with cache enabled › should allow to change files while stopped (Pages change)

expect(received).toEqual(expected) // deep equality

Expected: "Timestamp = 1772033651160"
Received: "Timestamp = 1772033647210"

  349 |               const browser = await next.browser('/unchanged')
  350 |               const timestamp = await browser.elementByCss('main').text()
> 351 |               expect(unchangedTimestamp).toEqual(timestamp)
      |                                          ^
  352 |               await browser.close()
  353 |             }
  354 |           }

  at toEqual (e2e/filesystem-cache/filesystem-cache.test.ts:351:42)
  at inner (e2e/filesystem-cache/filesystem-cache.test.ts:361:13)
  at NextStartInstance.patchFile (lib/next-modes/base.ts:742:9)
  at Object.withChange (e2e/filesystem-cache/filesystem-cache.test.ts:213:9)
  at Object.<anonymous> (e2e/filesystem-cache/filesystem-cache.test.ts:375:11)

● filesystem-caching with cache enabled › should allow to change files while stopped (rename app page)

expect(received).toEqual(expected) // deep equality

Expected: "Timestamp = 1772033659798"
Received: "Timestamp = 1772033655462"

  349 |               const browser = await next.browser('/unchanged')
  350 |               const timestamp = await browser.elementByCss('main').text()
> 351 |               expect(unchangedTimestamp).toEqual(timestamp)
      |                                          ^
  352 |               await browser.close()
  353 |             }
  354 |           }

  at toEqual (e2e/filesystem-cache/filesystem-cache.test.ts:351:42)
  at inner (e2e/filesystem-cache/filesystem-cache.test.ts:361:13)
  at Object.withChange (e2e/filesystem-cache/filesystem-cache.test.ts:251:13)
  at Object.<anonymous> (e2e/filesystem-cache/filesystem-cache.test.ts:375:11)

● filesystem-caching with cache enabled › should allow to change files while stopped (next config change)

expect(received).toEqual(expected) // deep equality

Expected: "Timestamp = 1772033669097"
Received: "Timestamp = 1772033664250"

  349 |               const browser = await next.browser('/unchanged')
  350 |               const timestamp = await browser.elementByCss('main').text()
> 351 |               expect(unchangedTimestamp).toEqual(timestamp)
      |                                          ^
  352 |               await browser.close()
  353 |             }
  354 |           }

  at toEqual (e2e/filesystem-cache/filesystem-cache.test.ts:351:42)
  at inner (e2e/filesystem-cache/filesystem-cache.test.ts:361:13)
  at NextStartInstance.patchFile (lib/next-modes/base.ts:742:9)
  at Object.withChange (e2e/filesystem-cache/filesystem-cache.test.ts:213:9)
  at Object.<anonymous> (e2e/filesystem-cache/filesystem-cache.test.ts:375:11)

● filesystem-caching with cache enabled › should allow to change files while stopped (env var change)

expect(received).toEqual(expected) // deep equality

Expected: "Timestamp = 1772033677969"
Received: "Timestamp = 1772033673545"

  349 |               const browser = await next.browser('/unchanged')
  350 |               const timestamp = await browser.elementByCss('main').text()
> 351 |               expect(unchangedTimestamp).toEqual(timestamp)
      |                                          ^
  352 |               await browser.close()
  353 |             }
  354 |           }

  at toEqual (e2e/filesystem-cache/filesystem-cache.test.ts:351:42)
  at inner (e2e/filesystem-cache/filesystem-cache.test.ts:361:13)
  at Object.withChange (e2e/filesystem-cache/filesystem-cache.test.ts:296:13)
  at Object.<anonymous> (e2e/filesystem-cache/filesystem-cache.test.ts:375:11)

● filesystem-caching with cache enabled › should allow to change files while stopped (RSC change, RCC change, Pages change, rename app page, next config change, env var change)

expect(received).toEqual(expected) // deep equality

Expected: "Timestamp = 1772033687709"
Received: "Timestamp = 1772033682445"

  349 |               const browser = await next.browser('/unchanged')
  350 |               const timestamp = await browser.elementByCss('main').text()
> 351 |               expect(unchangedTimestamp).toEqual(timestamp)
      |                                          ^
  352 |               await browser.close()
  353 |             }
  354 |           }

  at toEqual (e2e/filesystem-cache/filesystem-cache.test.ts:351:42)
  at inner (e2e/filesystem-cache/filesystem-cache.test.ts:361:13)
  at NextStartInstance.patchFile (lib/next-modes/base.ts:742:9)
  at Object.withChange (e2e/filesystem-cache/filesystem-cache.test.ts:213:9)
  at NextStartInstance.patchFile (lib/next-modes/base.ts:742:9)
  at Object.withChange (e2e/filesystem-cache/filesystem-cache.test.ts:213:9)
  at NextStartInstance.patchFile (lib/next-modes/base.ts:742:9)
  at Object.withChange (e2e/filesystem-cache/filesystem-cache.test.ts:213:9)
  at Object.withChange (e2e/filesystem-cache/filesystem-cache.test.ts:251:13)
  at NextStartInstance.patchFile (lib/next-modes/base.ts:742:9)
  at Object.withChange (e2e/filesystem-cache/filesystem-cache.test.ts:213:9)
  at Object.withChange (e2e/filesystem-cache/filesystem-cache.test.ts:296:13)
  at Object.<anonymous> (e2e/filesystem-cache/filesystem-cache.test.ts:375:11)

pnpm test-dev-turbo test/e2e/filesystem-cache/filesystem-cache.test.ts (turbopack) (job)

filesystem-caching with cache enabled > should cache or not cache loaders (DD)
filesystem-caching with cache enabled > should allow to change files while stopped (RSC change) (DD)
filesystem-caching with cache enabled > should allow to change files while stopped (RCC change) (DD)
filesystem-caching with cache enabled > should allow to change files while stopped (Pages change) (DD)
filesystem-caching with cache enabled > should allow to change files while stopped (rename app page) (DD)
filesystem-caching with cache enabled > should allow to change files while stopped (next config change) (DD)
filesystem-caching with cache enabled > should allow to change files while stopped (env var change) (DD)
filesystem-caching with cache enabled > should allow to change files while stopped (RSC change, RCC change, Pages change, rename app page, next config change, env var change) (DD)

Expand output

● filesystem-caching with cache enabled › should cache or not cache loaders

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

Expected: "Timestamp = 1772033661835"
Received: "Timestamp = 1772033669488"

  145 |           expect(newTimestamp).toMatch(/Timestamp = \d+$/)
  146 |           if (cacheEnabled) {
> 147 |             expect(newTimestamp).toBe(appTimestamp)
      |                                  ^
  148 |           } else {
  149 |             expect(newTimestamp).not.toBe(appTimestamp)
  150 |           }

  at Object.toBe (e2e/filesystem-cache/filesystem-cache.test.ts:147:34)

● filesystem-caching with cache enabled › should allow to change files while stopped (RSC change)

expect(received).toEqual(expected) // deep equality

Expected: "Timestamp = 1772033682016"
Received: "Timestamp = 1772033677303"

  349 |               const browser = await next.browser('/unchanged')
  350 |               const timestamp = await browser.elementByCss('main').text()
> 351 |               expect(unchangedTimestamp).toEqual(timestamp)
      |                                          ^
  352 |               await browser.close()
  353 |             }
  354 |           }

  at toEqual (e2e/filesystem-cache/filesystem-cache.test.ts:351:42)
  at inner (e2e/filesystem-cache/filesystem-cache.test.ts:361:13)
  at NextDevInstance.patchFile (lib/next-modes/base.ts:742:9)
  at NextDevInstance.patchFile (lib/next-modes/next-dev.ts:304:16)
  at Object.withChange (e2e/filesystem-cache/filesystem-cache.test.ts:213:9)
  at Object.<anonymous> (e2e/filesystem-cache/filesystem-cache.test.ts:375:11)

● filesystem-caching with cache enabled › should allow to change files while stopped (RCC change)

expect(received).toEqual(expected) // deep equality

Expected: "Timestamp = 1772033694453"
Received: "Timestamp = 1772033689727"

  349 |               const browser = await next.browser('/unchanged')
  350 |               const timestamp = await browser.elementByCss('main').text()
> 351 |               expect(unchangedTimestamp).toEqual(timestamp)
      |                                          ^
  352 |               await browser.close()
  353 |             }
  354 |           }

  at toEqual (e2e/filesystem-cache/filesystem-cache.test.ts:351:42)
  at inner (e2e/filesystem-cache/filesystem-cache.test.ts:361:13)
  at NextDevInstance.patchFile (lib/next-modes/base.ts:742:9)
  at NextDevInstance.patchFile (lib/next-modes/next-dev.ts:304:16)
  at Object.withChange (e2e/filesystem-cache/filesystem-cache.test.ts:213:9)
  at Object.<anonymous> (e2e/filesystem-cache/filesystem-cache.test.ts:375:11)

● filesystem-caching with cache enabled › should allow to change files while stopped (Pages change)

expect(received).toEqual(expected) // deep equality

Expected: "Timestamp = 1772033706836"
Received: "Timestamp = 1772033702106"

  349 |               const browser = await next.browser('/unchanged')
  350 |               const timestamp = await browser.elementByCss('main').text()
> 351 |               expect(unchangedTimestamp).toEqual(timestamp)
      |                                          ^
  352 |               await browser.close()
  353 |             }
  354 |           }

  at toEqual (e2e/filesystem-cache/filesystem-cache.test.ts:351:42)
  at inner (e2e/filesystem-cache/filesystem-cache.test.ts:361:13)
  at NextDevInstance.patchFile (lib/next-modes/base.ts:742:9)
  at NextDevInstance.patchFile (lib/next-modes/next-dev.ts:304:16)
  at Object.withChange (e2e/filesystem-cache/filesystem-cache.test.ts:213:9)
  at Object.<anonymous> (e2e/filesystem-cache/filesystem-cache.test.ts:375:11)

● filesystem-caching with cache enabled › should allow to change files while stopped (rename app page)

expect(received).toEqual(expected) // deep equality

Expected: "Timestamp = 1772033720244"
Received: "Timestamp = 1772033715082"

  349 |               const browser = await next.browser('/unchanged')
  350 |               const timestamp = await browser.elementByCss('main').text()
> 351 |               expect(unchangedTimestamp).toEqual(timestamp)
      |                                          ^
  352 |               await browser.close()
  353 |             }
  354 |           }

  at toEqual (e2e/filesystem-cache/filesystem-cache.test.ts:351:42)
  at inner (e2e/filesystem-cache/filesystem-cache.test.ts:361:13)
  at Object.withChange (e2e/filesystem-cache/filesystem-cache.test.ts:251:13)
  at Object.<anonymous> (e2e/filesystem-cache/filesystem-cache.test.ts:375:11)

● filesystem-caching with cache enabled › should allow to change files while stopped (next config change)

expect(received).toEqual(expected) // deep equality

Expected: "Timestamp = 1772033733803"
Received: "Timestamp = 1772033728851"

  349 |               const browser = await next.browser('/unchanged')
  350 |               const timestamp = await browser.elementByCss('main').text()
> 351 |               expect(unchangedTimestamp).toEqual(timestamp)
      |                                          ^
  352 |               await browser.close()
  353 |             }
  354 |           }

  at toEqual (e2e/filesystem-cache/filesystem-cache.test.ts:351:42)
  at inner (e2e/filesystem-cache/filesystem-cache.test.ts:361:13)
  at NextDevInstance.patchFile (lib/next-modes/base.ts:742:9)
  at NextDevInstance.patchFile (lib/next-modes/next-dev.ts:304:16)
  at Object.withChange (e2e/filesystem-cache/filesystem-cache.test.ts:213:9)
  at Object.<anonymous> (e2e/filesystem-cache/filesystem-cache.test.ts:375:11)

● filesystem-caching with cache enabled › should allow to change files while stopped (env var change)

expect(received).toEqual(expected) // deep equality

Expected: "Timestamp = 1772033747299"
Received: "Timestamp = 1772033742369"

  349 |               const browser = await next.browser('/unchanged')
  350 |               const timestamp = await browser.elementByCss('main').text()
> 351 |               expect(unchangedTimestamp).toEqual(timestamp)
      |                                          ^
  352 |               await browser.close()
  353 |             }
  354 |           }

  at toEqual (e2e/filesystem-cache/filesystem-cache.test.ts:351:42)
  at inner (e2e/filesystem-cache/filesystem-cache.test.ts:361:13)
  at Object.withChange (e2e/filesystem-cache/filesystem-cache.test.ts:296:13)
  at Object.<anonymous> (e2e/filesystem-cache/filesystem-cache.test.ts:375:11)

● filesystem-caching with cache enabled › should allow to change files while stopped (RSC change, RCC change, Pages change, rename app page, next config change, env var change)

expect(received).toEqual(expected) // deep equality

Expected: "Timestamp = 1772033762974"
Received: "Timestamp = 1772033756624"

  349 |               const browser = await next.browser('/unchanged')
  350 |               const timestamp = await browser.elementByCss('main').text()
> 351 |               expect(unchangedTimestamp).toEqual(timestamp)
      |                                          ^
  352 |               await browser.close()
  353 |             }
  354 |           }

  at toEqual (e2e/filesystem-cache/filesystem-cache.test.ts:351:42)
  at inner (e2e/filesystem-cache/filesystem-cache.test.ts:361:13)
  at NextDevInstance.patchFile (lib/next-modes/base.ts:742:9)
  at NextDevInstance.patchFile (lib/next-modes/next-dev.ts:304:16)
  at Object.withChange (e2e/filesystem-cache/filesystem-cache.test.ts:213:9)
  at NextDevInstance.patchFile (lib/next-modes/base.ts:742:9)
  at NextDevInstance.patchFile (lib/next-modes/next-dev.ts:304:16)
  at Object.withChange (e2e/filesystem-cache/filesystem-cache.test.ts:213:9)
  at NextDevInstance.patchFile (lib/next-modes/base.ts:742:9)
  at NextDevInstance.patchFile (lib/next-modes/next-dev.ts:304:16)
  at Object.withChange (e2e/filesystem-cache/filesystem-cache.test.ts:213:9)
  at Object.withChange (e2e/filesystem-cache/filesystem-cache.test.ts:251:13)
  at NextDevInstance.patchFile (lib/next-modes/base.ts:742:9)
  at NextDevInstance.patchFile (lib/next-modes/next-dev.ts:304:16)
  at Object.withChange (e2e/filesystem-cache/filesystem-cache.test.ts:213:9)
  at Object.withChange (e2e/filesystem-cache/filesystem-cache.test.ts:296:13)
  at Object.<anonymous> (e2e/filesystem-cache/filesystem-cache.test.ts:375:11)

codspeed-hq · 2026-02-25T15:26:10Z

Merging this PR will not alter performance

✅ 17 untouched benchmarks
⏩ 3 skipped benchmarks¹

_{Comparing sokra/env-in-cache (7671c5d) with canary (67bb800)}

3 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports. ↩

nextjs-bot · 2026-02-25T15:34:47Z

Stats from current PR

🔴 1 regression

Metric	Canary	PR	Change	Trend
Cold (First Request)	1.567s	1.688s	🔴 +121ms (+8%)	▁▃▄▄▁

📊 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)	913ms	914ms	✓	▁▁▁▁▁
Cold (Ready in log)	900ms	914ms	✓	▁▁▂▂▁
Cold (First Request)	1.567s	1.688s	🔴 +121ms (+8%)	▁▃▄▄▁
Warm (Listen)	914ms	913ms	✓	▁▁▁▁▁
Warm (Ready in log)	904ms	911ms	✓	▁▁▁▁▁
Warm (First Request)	726ms	705ms	✓	▂▁▁▂▂

📦 Dev Server (Webpack) (Legacy)

📦 Dev Server (Webpack)

Metric	Canary	PR	Change	Trend
Cold (Listen)	456ms	457ms	✓	▁▁▁▁▁
Cold (Ready in log)	439ms	438ms	✓	▁▁▁▁▁
Cold (First Request)	1.944s	1.961s	✓	▁▁▁▁▁
Warm (Listen)	456ms	457ms	✓	▁▁▁▁▁
Warm (Ready in log)	439ms	438ms	✓	▁▁▁▁▁
Warm (First Request)	1.976s	1.976s	✓	▁▁▁▁▁

⚡ Production Builds

Metric	Canary	PR	Change	Trend
Fresh Build	6.396s	6.696s	✓	▁▁▁▁▁
Cached Build	6.340s	6.625s	✓	▁▁▁▁▁

📦 Production Builds (Webpack) (Legacy)

📦 Production Builds (Webpack)

Metric	Canary	PR	Change	Trend
Fresh Build	14.166s	14.124s	✓	▁▁▄▁▃
Cached Build	14.175s	14.165s	✓	▁▁▃▁▃
node_modules Size	474 MB	474 MB	✓	█████

📦 Bundle Sizes

Bundle Sizes

⚡ Turbopack

Client

Main Bundles: **399 kB** → **399 kB** ✅ -8 B

80 files with content-based hashes (individual files not comparable between builds)

Server

Middleware

	Canary	PR	Change
middleware-b..fest.js gzip	766 B	761 B	✓
Total	766 B	761 B	✅ -5 B

Build Details

Build Manifests

	Canary	PR	Change
_buildManifest.js gzip	448 B	451 B	✓
Total	448 B	451 B	⚠️ +3 B

📦 Webpack

Client

Main Bundles

	Canary	PR	Change
5528-HASH.js gzip	5.54 kB	N/A	-
6280-HASH.js gzip	57.5 kB	N/A	-
6335.HASH.js gzip	169 B	N/A	-
912-HASH.js gzip	4.59 kB	N/A	-
e8aec2e4-HASH.js gzip	62.6 kB	N/A	-
framework-HASH.js gzip	59.7 kB	59.7 kB	✓
main-app-HASH.js gzip	256 B	254 B	✓
main-HASH.js gzip	39.1 kB	39.1 kB	✓
webpack-HASH.js gzip	1.68 kB	1.68 kB	✓
262-HASH.js gzip	N/A	4.59 kB	-
2889.HASH.js gzip	N/A	169 B	-
5602-HASH.js gzip	N/A	5.55 kB	-
6948ada0-HASH.js gzip	N/A	62.6 kB	-
9544-HASH.js gzip	N/A	58.3 kB	-
Total	231 kB	232 kB	⚠️ +754 B

Polyfills

	Canary	PR	Change
polyfills-HASH.js gzip	39.4 kB	39.4 kB	✓
Total	39.4 kB	39.4 kB	✓

Pages

	Canary	PR	Change
_app-HASH.js gzip	194 B	194 B	✓
_error-HASH.js gzip	183 B	180 B	🟢 3 B (-2%)
css-HASH.js gzip	331 B	330 B	✓
dynamic-HASH.js gzip	1.81 kB	1.81 kB	✓
edge-ssr-HASH.js gzip	256 B	256 B	✓
head-HASH.js gzip	351 B	352 B	✓
hooks-HASH.js gzip	384 B	383 B	✓
image-HASH.js gzip	580 B	581 B	✓
index-HASH.js gzip	260 B	260 B	✓
link-HASH.js gzip	2.5 kB	2.5 kB	✓
routerDirect..HASH.js gzip	320 B	319 B	✓
script-HASH.js gzip	386 B	386 B	✓
withRouter-HASH.js gzip	315 B	315 B	✓
1afbb74e6ecf..834.css gzip	106 B	106 B	✓
Total	7.97 kB	7.97 kB	✅ -2 B

Server

Edge SSR

	Canary	PR	Change
edge-ssr.js gzip	125 kB	125 kB	✓
page.js gzip	253 kB	253 kB	✓
Total	377 kB	378 kB	⚠️ +508 B

Middleware

	Canary	PR	Change
middleware-b..fest.js gzip	617 B	613 B	✓
middleware-r..fest.js gzip	156 B	155 B	✓
middleware.js gzip	43.8 kB	43.9 kB	✓
edge-runtime..pack.js gzip	842 B	842 B	✓
Total	45.4 kB	45.5 kB	⚠️ +85 B

Build Details

Build Manifests

	Canary	PR	Change
_buildManifest.js gzip	715 B	718 B	✓
Total	715 B	718 B	⚠️ +3 B

Build Cache

	Canary	PR	Change
0.pack gzip	3.99 MB	4 MB	🔴 +12.5 kB (+0%)
index.pack gzip	102 kB	102 kB	✓
index.pack.old gzip	101 kB	102 kB	✓
Total	4.19 MB	4.2 MB	⚠️ +14.4 kB

🔄 Shared (bundler-independent)

Runtimes

	Canary	PR	Change
app-page-exp...dev.js gzip	318 kB	318 kB	✓
app-page-exp..prod.js gzip	169 kB	169 kB	✓
app-page-tur...dev.js gzip	318 kB	318 kB	✓
app-page-tur..prod.js gzip	168 kB	168 kB	✓
app-page-tur...dev.js gzip	314 kB	314 kB	✓
app-page-tur..prod.js gzip	167 kB	167 kB	✓
app-page.run...dev.js gzip	315 kB	315 kB	✓
app-page.run..prod.js gzip	167 kB	167 kB	✓
app-route-ex...dev.js gzip	70.8 kB	70.8 kB	✓
app-route-ex..prod.js gzip	49.2 kB	49.2 kB	✓
app-route-tu...dev.js gzip	70.8 kB	70.8 kB	✓
app-route-tu..prod.js gzip	49.2 kB	49.2 kB	✓
app-route-tu...dev.js gzip	70.4 kB	70.4 kB	✓
app-route-tu..prod.js gzip	49 kB	49 kB	✓
app-route.ru...dev.js gzip	70.4 kB	70.4 kB	✓
app-route.ru..prod.js gzip	49 kB	49 kB	✓
dist_client_...dev.js gzip	324 B	324 B	✓
dist_client_...dev.js gzip	326 B	326 B	✓
dist_client_...dev.js gzip	318 B	318 B	✓
dist_client_...dev.js gzip	317 B	317 B	✓
pages-api-tu...dev.js gzip	43.2 kB	43.2 kB	✓
pages-api-tu..prod.js gzip	32.9 kB	32.9 kB	✓
pages-api.ru...dev.js gzip	43.2 kB	43.2 kB	✓
pages-api.ru..prod.js gzip	32.8 kB	32.8 kB	✓
pages-turbo....dev.js gzip	52.5 kB	52.5 kB	✓
pages-turbo...prod.js gzip	38.5 kB	38.5 kB	✓
pages.runtim...dev.js gzip	52.5 kB	52.5 kB	✓
pages.runtim..prod.js gzip	38.4 kB	38.4 kB	✓
server.runti..prod.js gzip	62 kB	62 kB	✓
Total	2.81 MB	2.81 MB	⚠️ +3 B

📎 Tarball URL

next@https://vercel-packages.vercel.app/next/prs/90526/next

turbopack/crates/turbopack-node/src/evaluate.rs

common_node_env filters env vars to a small known set (NODE_*, UV_*, SSL_*) that are safe to cache, so it should return a persistable EnvMap.

nextjs-bot added created-by: Turbopack team PRs by the Turbopack team. Turbopack Related to Turbopack with Next.js. labels Feb 25, 2026

mischnic approved these changes Feb 25, 2026

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sokra commented Feb 25, 2026

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turbopack/crates/turbopack-node/src/evaluate.rs Outdated Show resolved Hide resolved

Return EnvMap from common_node_env instead of TransientEnvMap

7671c5d

common_node_env filters env vars to a small known set (NODE_*, UV_*, SSL_*) that are safe to cache, so it should return a persistable EnvMap.

sokra changed the title ~~Add TransientEnvMap to avoid persisting env vars in cache~~ Turbopack: Add TransientEnvMap to avoid persisting env vars in cache Feb 25, 2026

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Turbopack: Add TransientEnvMap to avoid persisting env vars in cache#90526

Turbopack: Add TransientEnvMap to avoid persisting env vars in cache#90526
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