build(deps-dev): bump @cloudflare/vitest-pool-workers from 0.20.3 to 0.21.2

[dependabot]

Bumps @cloudflare/vitest-pool-workers from 0.20.3 to 0.21.2.

Release notes

Sourced from @​cloudflare/vitest-pool-workers's releases.

@​cloudflare/vitest-pool-workers@​0.21.2

Patch Changes

• #15123 d0c976c Thanks @​dependabot! - Widen WorkerPoolOptionsContext.inject type to avoid ProvidedContext mismatch

  Previously, calling inject() inside cloudflareTest() pool options could fail with a type error when your project's ProvidedContext augmentation wasn't visible to the pool plugin. The inject parameter now accepts any string key and is generic (inject<T>(key)), defaulting to unknown when no type argument is provided. This lets you opt in to concrete types (e.g. inject<number>("port")) while avoiding the cross-copy ProvidedContext mismatch that occurred when pnpm resolved separate virtual-store instances of vitest.

• #15148 0b82b15 Thanks @​jamesopstad! - Ignore a nodejs_compat compatibility flag that the compatibility date already enables

  workerd rejects a compatibility flag that its compatibility date enables by default, so a Worker configured with both a compatibility date of 2026-08-04 or later and nodejs_compat failed to start locally with "The compatibility flag nodejs_compat became the default as of 2026-08-04 so does not need to be specified anymore".

  The redundant nodejs_compat and nodejs_compat_v2 flags are now dropped when starting the runtime, which has no effect on the resulting Worker because the compatibility date enables both anyway. no_nodejs_compat and no_nodejs_compat_v2 still switch Node.js compatibility off, and a flag specified alongside its own opt-out is left alone so that workerd still reports those as contradictory.

• #15123 d0c976c Thanks @​dependabot! - Detect Node.js compatibility from the compatibility date, now that nodejs_compat is enabled by default

  As of compatibility date 2026-08-04, workerd enables the nodejs_compat and nodejs_compat_v2 compatibility flags by default. Previously these tools only treated Node.js compatibility as enabled when one of those flags was listed explicitly, so a Worker on a compatibility date of 2026-08-04 or later without the flag would get Node.js APIs from the runtime but no Node.js polyfills from the bundler, and process.env could be substituted with an empty object at build time. They now resolve these flags the same way workerd does, and honour no_nodejs_compat to opt out.

  To keep Node.js compatibility switched off on a newer compatibility date, specify both no_nodejs_compat and no_nodejs_compat_v2, since each flag has its own default.

  @cloudflare/vitest-pool-workers needs nodejs_compat_v2 for its own test runner, so it continues to override a project that opts out of it. On a compatibility date that enables the flag anyway, it now drops the opt-out rather than adding the flag back, which workerd would reject — previously this stopped such a project from running any tests at all.

  wrangler types also no longer attributes its @types/node suggestion to "the nodejs_compat flag", which it can now make for Workers that do not set the flag at all.

• #15131 90dd5e5 Thanks @​vicb! - Bump capnp-es to 0.0.15.

  Also re-generate the types for the latest .capnp files

• Updated dependencies [d0c976c, d0c976c, 0b82b15, d0c976c, d0c976c, 90dd5e5, 3b02915]:

  • miniflare@5.20260811.0-alpha
  • wrangler@4.122.0

@​cloudflare/vitest-pool-workers@​0.21.1

Patch Changes

• #14882 ab9132d Thanks @​petebacondarwin! - Report built-in modules that a Worker's compatibility settings don't provide as module errors, instead of crashing workerd

  Previously, a Worker whose module graph statically reached a compatibility-gated built-in that wasn't enabled — for example import "node:child_process" without nodejs_compat — took down the runtime with *** Received signal [#11](https://github.com/cloudflare/workers-sdk/tree/HEAD/packages/vitest-pool-workers/issues/11): Segmentation fault before any test ran. Vitest reported only Worker exited unexpectedly, naming neither the module nor the file that imported it, which made the cause very hard to find. The import didn't even have to be called; being reachable from the entrypoint was enough.

  The module fallback service answered these specifiers with a redirect to the modules root, but workerd already resolves node:/cloudflare:/workerd: specifiers there, so the redirect pointed back at the module workerd was in the middle of resolving and it recursed until the stack overflowed. Such a specifier only reaches the fallback service when workerd's own registry has already missed, so it's now reported as not found: workerd raises No such module "node:child_process", matching what wrangler dev does for the same Worker. The accompanying pool error names the module and points at compatibility flags rather than suggesting you bundle it, which can't help for a module built into the runtime.

• Updated dependencies [15cad03, 026e058, 731b33a, e1b5b4b, 5b1b930, 6e7d37d, d669088, 15cad03, c7aede7, 0aa8fa5]:

  • wrangler@4.121.0
  • miniflare@5.20260804.1-alpha

@​cloudflare/vitest-pool-workers@​0.21.0

Minor Changes

• #14994 2194f88 Thanks @​emily-shen! - Update the Workers Vitest pool for Miniflare's config-based options

  The Workers Vitest pool now converts the Miniflare options it creates for test sessions to Miniflare's config-based workers shape.

... (truncated)

Changelog

Sourced from @​cloudflare/vitest-pool-workers's changelog.

0.21.2

Patch Changes

• #15123 d0c976c Thanks @​dependabot! - Widen WorkerPoolOptionsContext.inject type to avoid ProvidedContext mismatch

  Previously, calling inject() inside cloudflareTest() pool options could fail with a type error when your project's ProvidedContext augmentation wasn't visible to the pool plugin. The inject parameter now accepts any string key and is generic (inject<T>(key)), defaulting to unknown when no type argument is provided. This lets you opt in to concrete types (e.g. inject<number>("port")) while avoiding the cross-copy ProvidedContext mismatch that occurred when pnpm resolved separate virtual-store instances of vitest.

• #15148 0b82b15 Thanks @​jamesopstad! - Ignore a nodejs_compat compatibility flag that the compatibility date already enables

  workerd rejects a compatibility flag that its compatibility date enables by default, so a Worker configured with both a compatibility date of 2026-08-04 or later and nodejs_compat failed to start locally with "The compatibility flag nodejs_compat became the default as of 2026-08-04 so does not need to be specified anymore".

  The redundant nodejs_compat and nodejs_compat_v2 flags are now dropped when starting the runtime, which has no effect on the resulting Worker because the compatibility date enables both anyway. no_nodejs_compat and no_nodejs_compat_v2 still switch Node.js compatibility off, and a flag specified alongside its own opt-out is left alone so that workerd still reports those as contradictory.

• #15123 d0c976c Thanks @​dependabot! - Detect Node.js compatibility from the compatibility date, now that nodejs_compat is enabled by default

  As of compatibility date 2026-08-04, workerd enables the nodejs_compat and nodejs_compat_v2 compatibility flags by default. Previously these tools only treated Node.js compatibility as enabled when one of those flags was listed explicitly, so a Worker on a compatibility date of 2026-08-04 or later without the flag would get Node.js APIs from the runtime but no Node.js polyfills from the bundler, and process.env could be substituted with an empty object at build time. They now resolve these flags the same way workerd does, and honour no_nodejs_compat to opt out.

  To keep Node.js compatibility switched off on a newer compatibility date, specify both no_nodejs_compat and no_nodejs_compat_v2, since each flag has its own default.

  @cloudflare/vitest-pool-workers needs nodejs_compat_v2 for its own test runner, so it continues to override a project that opts out of it. On a compatibility date that enables the flag anyway, it now drops the opt-out rather than adding the flag back, which workerd would reject — previously this stopped such a project from running any tests at all.

  wrangler types also no longer attributes its @types/node suggestion to "the nodejs_compat flag", which it can now make for Workers that do not set the flag at all.

• #15131 90dd5e5 Thanks @​vicb! - Bump capnp-es to 0.0.15.

  Also re-generate the types for the latest .capnp files

• Updated dependencies [d0c976c, d0c976c, 0b82b15, d0c976c, d0c976c, 90dd5e5, 3b02915]:

  • miniflare@5.20260811.0-alpha
  • wrangler@4.122.0

0.21.1

Patch Changes

• #14882 ab9132d Thanks @​petebacondarwin! - Report built-in modules that a Worker's compatibility settings don't provide as module errors, instead of crashing workerd

  Previously, a Worker whose module graph statically reached a compatibility-gated built-in that wasn't enabled — for example import "node:child_process" without nodejs_compat — took down the runtime with *** Received signal [#11](https://github.com/cloudflare/workers-sdk/tree/HEAD/packages/vitest-pool-workers/issues/11): Segmentation fault before any test ran. Vitest reported only Worker exited unexpectedly, naming neither the module nor the file that imported it, which made the cause very hard to find. The import didn't even have to be called; being reachable from the entrypoint was enough.

  The module fallback service answered these specifiers with a redirect to the modules root, but workerd already resolves node:/cloudflare:/workerd: specifiers there, so the redirect pointed back at the module workerd was in the middle of resolving and it recursed until the stack overflowed. Such a specifier only reaches the fallback service when workerd's own registry has already missed, so it's now reported as not found: workerd raises No such module "node:child_process", matching what wrangler dev does for the same Worker. The accompanying pool error names the module and points at compatibility flags rather than suggesting you bundle it, which can't help for a module built into the runtime.

• Updated dependencies [15cad03, 026e058, 731b33a, e1b5b4b, 5b1b930, 6e7d37d, d669088, 15cad03, c7aede7, 0aa8fa5]:

  • wrangler@4.121.0
  • miniflare@5.20260804.1-alpha

0.21.0

Minor Changes

... (truncated)

Commits

• e5d56e9 Version Packages (#15145)
• d0c976c Bump the workerd-and-workers-types group across 1 directory with 2 updates (#...
• 90dd5e5 chore: bump capnp-es to 0.0.15 (#15131)
• 15fc568 Version Packages (#15118)
• ab9132d [vitest-pool-workers] Report unavailable built-ins as module errors instead o...
• d2f377e Version Packages (#15111)
• 2194f88 new config miniflare attempt 3 (#14994)
• See full diff in compare view

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