enable jest coverage by setting CI env var, set thresholds

Author: czosel

.github/workflows/test.yml

@@ -22,3 +22,5 @@ jobs:
       run: |
         npm install
         npm test
+      env:
+        CI: true

jest.config.js

@@ -5,6 +5,14 @@ const ENABLE_COVERAGE = !!process.env.CI || !!process.env.COVERAGE;
 module.exports = {
   collectCoverage: ENABLE_COVERAGE,
   coverageDirectory: "coverage/",
+  coverageThreshold: {
+    global: {
+      statements: 95.6,
+      branches: 89.6,
+      functions: 99,
+      lines: 96.1,
+    },
+  },
   projects: [
     {
       displayName: "test",