fix

package.json

@@ -17,9 +17,7 @@
     "@sapphirecode/auth-client-helper": "^1.0.45",
     "@sapphirecode/eslint-config": "^2.1.4",
     "@stryker-mutator/core": "^4.0.0",
-    "@stryker-mutator/jasmine-framework": "^4.0.0",
     "@stryker-mutator/jasmine-runner": "^4.0.0",
-    "@stryker-mutator/javascript-mutator": "^4.0.0",
     "@types/jasmine": "^3.5.14",
     "eslint": "^7.0.0",
     "express": "^4.17.1",

stryker.conf.js

@@ -11,16 +11,13 @@
  * @type {import('@stryker-mutator/api/core').StrykerOptions}
  */
 module.exports = {
-  mutator:          'javascript',
   packageManager:   'yarn',
   reporters:        [
     'clear-text',
     'progress'
   ],
   testRunner:        'jasmine',
-  testFramework:     'jasmine',
   jasmineConfigFile: 'jasmine.json',
-  transpilers:       [],
   coverageAnalysis:  'perTest',
   mutate:            [ 'index.js' ]
 };

yarn.lock

@@ -397,11 +397,6 @@
     "@stryker-mutator/api" "4.0.0"
     "@stryker-mutator/util" "4.0.0"
 
-"@stryker-mutator/javascript-mutator@^4.0.0":
-  version "4.0.0"
-  resolved "https://registry.yarnpkg.com/@stryker-mutator/javascript-mutator/-/javascript-mutator-4.0.0.tgz#9f8ff2f245ee3b05b0b4486a9f0554cb149ec71e"
-  integrity sha512-Z1A8CU8t6lwP0PGkvWkZbSYq3Z0y+7jp4VbQrL0DvkW/5s6wiZdb+u6Uu7uqeacX0iulxsySNRkGhdl3pE9/LQ==
-
 "@stryker-mutator/util@4.0.0":
   version "4.0.0"
   resolved "https://registry.yarnpkg.com/@stryker-mutator/util/-/util-4.0.0.tgz#b699673b06e36348cd09db27ae9ee0ced7a7cf88"