5.2.2 (2021-07-13)

Bug Fixes

• schema: Resolve "No 'exports' main" error (#3004) (9034806)

5.2.1 (2021-07-02)

Bug Fixes

• cucumber: off-by-one error in report (#2987) (5e184c1)

Features

• html: highlight files in html report (b7876a4)
• mutator: add the optional chaining mutator (#2988) (43ac767)

5.2.0 (2021-07-02)

Bug Fixes

• ignore patterns: always ignore *.tsbuildinfo files (#2985) (794f103)

Features

• 🥒: add support for cucumber-js test runner (#2970) (86d6f79)
• instrumenter: Implement new mutant placing algorithm (#2964) (24b8bc9)

5.1.1 (2021-06-15)

Bug Fixes

• peerDeps: update peer dependencies (05733d2)

5.1.0 (2021-06-14)

Bug Fixes

• jest-runner: allow a different rootDir (b66a617)
• jest-runner: use local jest version when jest@<25 (#2950) (3218c9e)

Features

• jest-runner: allow configuration in a custom package.json (825548c)
• jest-runner: dynamically override "testEnvironment" (#2934) (0590869)
• jest-runner: support findRelatedTests for mutated files outside of roots (#2951) (19dccec)
• mocha-runner: officially support mocha 9 (42848bb)

5.0.1 (2021-05-28)

Bug Fixes

• jest-runner: Support Jest v27 (#2861) (8d3560b)
• mocha-runner: improve debug logging (#2925) (ecc53ee)

5.0.0 (2021-05-14)

Bug Fixes

• sandbox: make directory if not exists before symlinking node_modules (#2856) (40f9a1d)
• vue-tsx: support parsing tsx script in .vue file (#2850) (dc66c28)

Features

• es: convert to es2019 (#2846) (36c687f)
• ignore patterns: add "ignorePatterns" config option (#2848) (a69992c), closes #1593 #2739
• jest: report test files and test positions (#2808) (c19095e)
• jest-runner: drop projectType "create-react-app-ts" (#2788) (2581e32), closes #2787 #2787
• mutators: mutate nullish coalescing operator (#2884) (021a419)
• node: Drop support for node 10 (#2879) (dd29f88)
• options: make "perTest" the default for "coverageAnalysis" (#2881) (518ebe6)
• range: remove Range from the API (#2882) (b578b22), closes #322
• report: add test details and metadata to JSON report (#2755) (acb0a3a)
• report: report test states (#2868) (e84aa88)
• reporter api: unify reporter api with mutation-testing-elements (#2798) (d173b27), closes #2766
• serialize: remove surrial (#2877) (5114835)

BREAKING CHANGES

• range: The range property is no longer present on a mutant. Note, this is a breaking change for plugin creators only.
• options: "perTest" is now the default value for "coverageAnalysis" when the configured test runner is not "command". Explicitly set "coverageAnalysis": "off" manually to opt-out of this behavior.
• node: Node 10 is no longer supported. Please use Node 12 or higher.
• serialize: Having a non-JSON-serializable value in your configuration won't be sent to the child process anymore. If you really need them in your test runner configuration, you should isolate those values and put them in test runner-specific config files, loaded by the test runner plugin itself, for example, jest.config.js, karma.conf.js, webpack.config.js.
• ignore patterns: Stryker will no longer use a git command to determine which files belong to your project. Instead, it will rely on sane defaults. You can change this behavior by defining ignorePatterns.
• ignore patterns: The files configuration option is deprecated and will be removed in a future release. Please use ignorePatterns instead.

This:

{
  "files": ["foo.js"]
}

Is equivalent to:

{
  "ignorePatterns": ["**", "!foo.js"]
}

• reporter api: Changes to Reporter and TestRunner plugin API of Stryker
• jest-runner: Support for project type create-react-app-ts is dropped from the jest-runner.

4.6.0 (2021-04-16)

Features

• mutation range: allow specifying a mutation range (#2751) (84647cf)
• rename: rename to StrykerJS (#2813) (dc08592), closes #2754

4.5.1 (2021-03-11)

Bug Fixes

• babel-transformer: respect top of the file comments/pragma (#2783) (ca42276)
• instrumenter: corect mutant location in .vue and .html files (547a25c), closes #2790
• peer-deps: use correct peer dep version (a6ca0f2)

4.5.0 (2021-03-06)

Bug Fixes

• logging: log info about symlinking on debug (#2756) (c672e2e)
• mutator: don't mutate string literal object methods (#2718) (964537a)
• reporting: report test name when a hook fails (#2757) (5e062b2)
• typescript-checker: improve error reporting (2502eba)
• typescript-checker: resolve tsconfig files correctly (8cf9e8c)

Features

• package: restructure package internals (#2714) (e1711d2)
• sandbox: support symlinking of node_modules anywhere (ee66623)