Issues

• Incremental: show which mutant results were reused from the previous run

  stryker-mutator/stryker-js#6278 · Filter by author MichengLiang opened on Oct 25, 2026

• @stryker-mutator/vitest-runner 10.1.1 + Vitest 5: --logLevel debug crashes with circular JSON

  stryker-mutator/stryker-js#6272 · Filter by author antoinezanardi opened on Oct 24, 2026
  1

• Support stryker.config.ts configuration files

  🚀 Feature request
  stryker-mutator/stryker-js#6271 · Filter by author smhmayboudi opened on Oct 24, 2026

• Typescript checker: what happens between initial test run and first mutant?

  ⁉ Question
  stryker-mutator/stryker-js#6264 · Filter by author bramdevriez opened on Oct 22, 2026

• Partial incremental report (#5986) isn't saved when the interrupt arrives twice, as it does under npm run and in CI

  stryker-mutator/stryker-js#6257 · Filter by author ken-talltree-io opened on Oct 15, 2026

• vitest-runner: when no test reaches any mutant, mutants are reported Survived (and every test runs) instead of NoCoverage

  stryker-mutator/stryker-js#6256 · Filter by author jonneryd opened on Oct 15, 2026

• jest-runner: perTest coverage keeps test file realms in memory, so large dry runs run out of memory

  stryker-mutator/stryker-js#6253 · Filter by author arun279 opened on Oct 11, 2026

• vitest-runner: workspace package resolution breaks through symlinked node_modules (Cannot find module)

  stryker-mutator/stryker-js#6243 · Filter by author ericmasiello opened on Oct 5, 2026

• TS parser: decorators plugin version is hardcoded, blocking TC39 auto-accessor syntax

  stryker-mutator/stryker-js#6242 · Filter by author ericmasiello opened on Oct 5, 2026

• Mocha Runner "Cannot find module" mocha/lib/cli/run-helpers in Mocha v12

  🐛 Bug
  stryker-mutator/stryker-js#6239 · Filter by author textbook opened on Oct 2, 2026

• Mutant switching cannot reach code that runs in a node:vm context without process

  🚀 Feature request
  stryker-mutator/stryker-js#6238 · Filter by author nlobach opened on Oct 1, 2026

• TSConfigPreprocessor assumes a one-segment tempDirName and ignores extends arrays

  stryker-mutator/stryker-js#6235 · Filter by author canblmz1 opened on Sep 29, 2026
  1

• vitest-runner: an unhandled error reads [object Object] in browser mode, and crashes the runner in node mode

  stryker-mutator/stryker-js#6233 · Filter by author rak200 opened on Sep 26, 2026

• instrumenter: TSAsExpression skip() also skips the wrapped runtime expression, not just the type

  stryker-mutator/stryker-js#6227 · Filter by author devBenWolf opened on Sep 21, 2026

• Breaks when trying to copy symlink to temp folder

  🐛 Bug
  stryker-mutator/stryker-js#6224 · Filter by author jafl opened on Sep 17, 2026
  5

• Update Node.js engine requirement to match Babel 8

  stryker-mutator/stryker-js#6222 · Filter by author KirillTregubov opened on Sep 11, 2026
  1

• vitest-runner: support selecting a single Vitest project from a multi-project (workspace) config

  stryker-mutator/stryker-js#6215 · Filter by author Mearman opened on Sep 6, 2026

• vitest-runner: mutants with testsCompleted: 0 are reported as Survived (reproducible at low worker count, without CPU contention)

  stryker-mutator/stryker-js#6213 · Filter by author brian-olson opened on Sep 5, 2026
  1

• Static mutants falsely reported as Survived with testFiles on Stryker 10.0.0 (corroborates #6144); vitest-runner reloadEnvironment capability declared but not implemented

  stryker-mutator/stryker-js#6209 · Filter by author easonLiangWorldedtech opened on Sep 4, 2026

• Instrumenter skips the *whole* expr as Type subtree — no mutants are generated for the runtime expression under an as cast

  🐛 Bug
  stryker-mutator/stryker-js#6208 · Filter by author EhnLiam opened on Sep 2, 2026
  3

• Node prerelease version rejected by minimal version guard

  🐛 Bug
  stryker-mutator/stryker-js#6193 · Filter by author NolwennD opened on Aug 26, 2026

• vitest-runner + coverageAnalysis perTest: mutant recorded Survived while its attributed tests fail (test-level failures, persists on 10.0.0 / vitest 4)

  stryker-mutator/stryker-js#6192 · Filter by author wzha5 opened on Aug 26, 2026

• vitest-runner: a spec file that fails to collect (zero tests) is silently counted as absent — dry run reports success

  stryker-mutator/stryker-js#6179 · Filter by author mihailo-obradovic opened on Aug 21, 2026

• Instrumenting Vue compiler macro arguments (defineModel/defineOptions/defineProps) produces code the SFC compiler hoists out of the helper's scope

  stryker-mutator/stryker-js#6178 · Filter by author mihailo-obradovic opened on Aug 21, 2026
  1

• Upgrade typed-rest-client to 3.1.0 to resolve qs advisory

  stryker-mutator/stryker-js#6176 · Filter by author karunmotorq opened on Aug 20, 2026