Switch to using diff-cover for the Coverage gate (#33673)

* Switch to using diff-cover for the Coverage gate

Enabling developers to check their PR coverage without waiting for CI

* Remove sonar-project.properties - in automatic mode Sonar will not read this file

* Add note to CONTRIBUTING.md

* Skip sonar in MQ

packages/module-api/package.json

@@ -27,7 +27,9 @@
     "scripts": {
         "prepack": "nx build",
         "lint:types": "nx lint:types",
-        "test:unit": "vitest"
+        "test:unit": "vitest",
+        "coverage": "pnpm test:unit --coverage",
+        "coverage:diff": "diff-cover --config-file ../../diff-cover.toml coverage/lcov.info"
     },
     "devDependencies": {
         "@element-hq/vite-common": "workspace:*",
@@ -44,8 +46,7 @@
         "typescript": "^6.0.0",
         "unplugin-dts": "1.0.1",
         "vite": "catalog:",
-        "vitest": "catalog:",
-        "vitest-sonar-reporter": "catalog:"
+        "vitest": "catalog:"
     },
     "peerDependencies": {
         "@matrix-org/react-sdk-module-api": "*",

packages/shared-components/package.json

@@ -51,6 +51,8 @@
         "test:unit": "nx test:unit",
         "test:storybook": "nx test:storybook",
         "test:storybook:update": "nx test:storybook:update",
+        "coverage": "pnpm test:unit --coverage",
+        "coverage:diff": "diff-cover --config-file ../../diff-cover.toml coverage/lcov.info",
         "build": "nx build",
         "prepack": "pnpm run build",
         "storybook": "storybook dev -p 6007",
@@ -132,8 +134,7 @@
         "unplugin-dts": "1.0.1",
         "vite": "catalog:",
         "vite-plugin-node-polyfills": "^0.28.0",
-        "vitest": "catalog:",
-        "vitest-sonar-reporter": "catalog:"
+        "vitest": "catalog:"
     },
     "engines": {
         "node": ">=20.0.0"

packages/vite-common/package.json

@@ -13,7 +13,6 @@
         "typescript": "catalog:"
     },
     "peerDependencies": {
-        "@vitest/coverage-v8": "catalog:",
-        "vitest-sonar-reporter": "catalog:"
+        "@vitest/coverage-v8": "catalog:"
     }
 }

packages/vite-common/vite.config.ts

@@ -31,13 +31,6 @@ const slowTestReporter: Reporter = {
 // if we're running under GHA, enable the GHA & Sonar reporters
 if (env["GITHUB_ACTIONS"] !== undefined) {
     reporters.push(["github-actions", { silent: false }]);
-    reporters.push([
-        "vitest-sonar-reporter",
-        {
-            outputFile: "coverage/sonar-report.xml",
-            onWritePath: (path): string => `${process.cwd()}/${path}`,
-        },
-    ]);
 
     // if we're running against the develop branch, also enable the slow test reporter
     if (env["GITHUB_REF"] == "refs/heads/develop") {