Use jest-light-runner/in-band

jest.config.mjs

@@ -33,21 +33,39 @@ if (!isProduction) {
 }
 
 const config = {
+  projects: [
+    {
+      displayName: "Format Test",
+      testMatch: ["<rootDir>/tests/format/**/jsfmt.spec.js"],
+      runner: "jest-light-runner",
+    },
+    {
+      displayName: "Unit Test",
+      testMatch: ["<rootDir>/tests/unit/**/*.js"],
+      runner: "jest-light-runner",
+    },
+    {
+      displayName: "Integration Test",
+      testMatch: ["<rootDir>/tests/integration/__tests__/**/*.js"],
+      runner: "jest-light-runner/in-band",
+    },
+  ].map((projectConfig) => ({
+    ...projectConfig,
+    snapshotSerializers: [
+      "jest-snapshot-serializer-raw",
+      "jest-snapshot-serializer-ansi",
+    ],
+    snapshotFormat: {
+      escapeString: false,
+      printBasicPrototype: false,
+    },
+    testPathIgnorePatterns,
+  })),
   setupFiles: [
     "<rootDir>/tests/config/format-test-setup.js",
     "<rootDir>/tests/integration/integration-test-setup.js",
   ],
-  runner: "jest-light-runner",
-  snapshotSerializers: [
-    "jest-snapshot-serializer-raw",
-    "jest-snapshot-serializer-ansi",
-  ],
-  testMatch: [
-    "<rootDir>/tests/format/**/jsfmt.spec.js",
-    "<rootDir>/tests/integration/__tests__/**/*.js",
-    "<rootDir>/tests/unit/**/*.js",
-  ],
-  testPathIgnorePatterns,
+  testMatch: [],
   collectCoverage: ENABLE_CODE_COVERAGE,
   collectCoverageFrom: ["<rootDir>/src/**/*.js", "<rootDir>/bin/**/*.js"],
   coveragePathIgnorePatterns: [

package.json

@@ -126,7 +126,7 @@
     "esm-utils": "4.1.0",
     "execa": "6.1.0",
     "jest": "29.0.1",
-    "jest-light-runner": "0.4.0",
+    "jest-light-runner": "fisker/jest-light-runner#in-band-runner",
     "jest-snapshot-serializer-ansi": "1.0.0",
     "jest-snapshot-serializer-raw": "1.2.0",
     "jest-watch-typeahead": "2.1.1",

yarn.lock

@@ -5197,9 +5197,9 @@ __metadata:
   languageName: node
   linkType: hard
 
-"jest-light-runner@npm:0.4.0":
+"jest-light-runner@fisker/jest-light-runner#in-band-runner":
   version: 0.4.0
-  resolution: "jest-light-runner@npm:0.4.0"
+  resolution: "jest-light-runner@https://github.com/fisker/jest-light-runner.git#commit=8f8bec4a2318036992c2c2ef5304688f0f72d937"
   dependencies:
     "@jest/expect": ^29.0.1
     jest-circus: ^29.0.1
@@ -5210,7 +5210,7 @@ __metadata:
     supports-color: ^9.2.1
   peerDependencies:
     jest: ^27.5.0 || ^28.0.0 || ^29.0.0
-  checksum: 8ad449a830bd1b039d505baa40881e6e7d1badc8698d844c456c156f820bf0a4b58563ef07678dbed368ca968262bccd28ba756a3d4dc1a8e19f49a57bf82775
+  checksum: 7753d49b331e81d9c0a6aee50627f4aa79193aea5a15f1d48eeb5e2374b84b1607f5d3e3bb2ad39511d7c8723d80ce03d84e37b49ea05623d137e08eba0339ae
   languageName: node
   linkType: hard
 
@@ -7000,7 +7000,7 @@ __metadata:
     import-meta-resolve: 2.1.0
     jest: 29.0.1
     jest-docblock: 29.0.0
-    jest-light-runner: 0.4.0
+    jest-light-runner: "fisker/jest-light-runner#in-band-runner"
     jest-snapshot-serializer-ansi: 1.0.0
     jest-snapshot-serializer-raw: 1.2.0
     jest-watch-typeahead: 2.1.1