Use @swc/jest to speed up unit tests

.dockerignore

@@ -106,3 +106,6 @@ dist
 # Cypress artifacts
 cypress/videos
 cypress/screenshots
+
+# SWC cache
+.swc/

.gitignore

@@ -133,4 +133,7 @@ public/images/govuk-mask-icon.svg
 public/images/govuk-opengraph-image.png
 
 # Ignore auto-generated zap.yaml
-scripts/zap/zap.yaml
+scripts/zap/zap.yaml
+
+# SWC cache
+.swc/

.swcrc

@@ -0,0 +1,17 @@
+{
+  "jsc": {
+    "parser": {
+      "syntax": "typescript",
+      "tsx": false,
+      "decorators": true
+    },
+    "transform": {
+      "legacyDecorator": true,
+      "decoratorMetadata": true
+    },
+    "target": "esnext"
+  },
+  "module": {
+    "type": "commonjs"
+  }
+}

jest.config.js

@@ -1,4 +1,5 @@
 /** @type {import('ts-jest').JestConfigWithTsJest} */
+
 module.exports = {
   preset: "ts-jest",
   setupFilesAfterEnv: ["<rootDir>/setupTests.ts"],
@@ -11,5 +12,8 @@ module.exports = {
     "^entities/(.*)$": "<rootDir>/src/entities/$1",
     "^services/(.*)$": "<rootDir>/src/services/$1",
     "^middleware/(.*)$": "<rootDir>/src/middleware/$1"
+  },
+  transform: {
+    "^.+\\.(t|j)sx?$": "@swc/jest"
   }
 }

package.json

@@ -32,8 +32,8 @@
     "zap": "./scripts/zap/zap-scan.sh"
   },
   "dependencies": {
-    "@govuk-react/table": "^0.10.7",
     "@govuk-react/select": "^0.10.7",
+    "@govuk-react/table": "^0.10.7",
     "@ministryofjustice/frontend": "^2.2.0",
     "@moj-bichard7-developers/bichard7-next-core": "^2.0.9",
     "@moj-bichard7-developers/bichard7-next-data": "^2.0.205",
@@ -76,6 +76,8 @@
     "@next/eslint-plugin-next": "^14.2.7",
     "@stdlib/random-base-exponential": "^0.2.1",
     "@stdlib/random-sample": "^0.2.1",
+    "@swc/core": "^1.7.23",
+    "@swc/jest": "^0.2.36",
     "@testing-library/cypress": "^10.0.2",
     "@testing-library/jest-dom": "^6.5.0",
     "@types/cookie-signature": "^1.1.2",