installed stryker mutation

.gitignore

@@ -74,4 +74,6 @@ link-plugins.sh
 test.sh
 
 .docker/**
-!**/.gitkeep
+!**/.gitkeep
+# stryker temp files
+.stryker-tmp

stryker.config.mjs

@@ -0,0 +1,13 @@
+// @ts-check
+/** @type {import('@stryker-mutator/api/core').PartialStrykerOptions} */
+const config = {
+  _comment:
+    "This config was generated using 'stryker init'. Please take a look at: https://stryker-mutator.io/docs/stryker-js/configuration/ for more information.",
+  packageManager: "npm",
+  reporters: ["html", "clear-text", "progress"],
+  testRunner: "mocha",
+  testRunner_comment:
+    "Take a look at https://stryker-mutator.io/docs/stryker-js/mocha-runner for information about the mocha plugin.",
+  coverageAnalysis: "perTest",
+};
+export default config;