diff --git a/.vitest.config/jsx-runtime-default.ts b/.vitest.config/jsx-runtime-default.ts
index 9885a19ba8..b6e497dc88 100644
--- a/.vitest.config/jsx-runtime-default.ts
+++ b/.vitest.config/jsx-runtime-default.ts
@@ -1,4 +1,5 @@
 import config from '../vitest.config'
+
 config.esbuild = {
   jsx: 'automatic',
   jsxImportSource: __dirname + '/../src/jsx',
@@ -8,5 +9,8 @@ if (config.test) {
     '**/src/jsx/dom/**/(*.)+(spec|test).+(ts|tsx|js)',
     'src/jsx/hooks/dom.test.tsx',
   ]
+  if (config.test.coverage) {
+    config.test.coverage.reportsDirectory = './coverage/raw/jsx-runtime'
+  }
 }
 export default config
diff --git a/.vitest.config/jsx-runtime-dom.ts b/.vitest.config/jsx-runtime-dom.ts
index 11adf6ccf0..c9a4a3a71e 100644
--- a/.vitest.config/jsx-runtime-dom.ts
+++ b/.vitest.config/jsx-runtime-dom.ts
@@ -8,5 +8,8 @@ if (config.test) {
     '**/src/jsx/dom/**/(*.)+(spec|test).+(ts|tsx|js)',
     'src/jsx/hooks/dom.test.tsx',
   ]
+  if (config.test.coverage) {
+    config.test.coverage.reportsDirectory = './coverage/raw/jsx-dom'
+  }
 }
 export default config
diff --git a/runtime_tests/bun/vitest.config.ts b/runtime_tests/bun/vitest.config.ts
index 5d244e3f17..6b1cae417a 100644
--- a/runtime_tests/bun/vitest.config.ts
+++ b/runtime_tests/bun/vitest.config.ts
@@ -1,9 +1,14 @@
 /// <reference types="vitest" />
 import { defineConfig } from 'vitest/config'
+import config from '../../vitest.config'
 
 export default defineConfig({
   test: {
     globals: true,
     include: ['**/runtime_tests/bun/**/*.+(ts|tsx|js)'],
+    coverage: {
+      ...config.test?.coverage,
+      reportsDirectory: './coverage/raw/runtime-bun',
+    },
   },
 })
diff --git a/runtime_tests/fastly/vitest.config.ts b/runtime_tests/fastly/vitest.config.ts
index 89baa35770..c0480b1398 100644
--- a/runtime_tests/fastly/vitest.config.ts
+++ b/runtime_tests/fastly/vitest.config.ts
@@ -1,6 +1,7 @@
 /// <reference types="vitest" />
 import fastlyCompute from 'vite-plugin-fastly-js-compute'
 import { defineConfig } from 'vitest/config'
+import config from '../../vitest.config'
 
 export default defineConfig({
   plugins: [fastlyCompute()],
@@ -8,5 +9,9 @@ export default defineConfig({
     globals: true,
     include: ['**/runtime_tests/fastly/**/(*.)+(test).+(ts|tsx)'],
     exclude: ['**/runtime_tests/fastly/vitest.config.ts'],
+    coverage: {
+      ...config.test?.coverage,
+      reportsDirectory: './coverage/raw/runtime-fastly',
+    },
   },
 })
diff --git a/runtime_tests/lambda-edge/vitest.config.ts b/runtime_tests/lambda-edge/vitest.config.ts
index 568ecc05cf..105ac9505a 100644
--- a/runtime_tests/lambda-edge/vitest.config.ts
+++ b/runtime_tests/lambda-edge/vitest.config.ts
@@ -1,5 +1,6 @@
 /// <reference types="vitest" />
 import { defineConfig } from 'vitest/config'
+import config from '../../vitest.config'
 
 export default defineConfig({
   test: {
@@ -9,5 +10,9 @@ export default defineConfig({
     globals: true,
     include: ['**/runtime_tests/lambda-edge/**/*.+(ts|tsx|js)'],
     exclude: ['**/runtime_tests/lambda-edge/vitest.config.ts'],
+    coverage: {
+      ...config.test?.coverage,
+      reportsDirectory: './coverage/raw/runtime-lambda-edge',
+    },
   },
 })
diff --git a/runtime_tests/lambda/vitest.config.ts b/runtime_tests/lambda/vitest.config.ts
index 0fd446dc69..f030cf4107 100644
--- a/runtime_tests/lambda/vitest.config.ts
+++ b/runtime_tests/lambda/vitest.config.ts
@@ -1,5 +1,6 @@
 /// <reference types="vitest" />
 import { defineConfig } from 'vitest/config'
+import config from '../../vitest.config'
 
 export default defineConfig({
   test: {
@@ -9,5 +10,9 @@ export default defineConfig({
     globals: true,
     include: ['**/runtime_tests/lambda/**/*.+(ts|tsx|js)'],
     exclude: ['**/runtime_tests/lambda/vitest.config.ts', '**/runtime_tests/lambda/mock.ts'],
+    coverage: {
+      ...config.test?.coverage,
+      reportsDirectory: './coverage/raw/runtime-lambda',
+    },
   },
 })
diff --git a/runtime_tests/node/vitest.config.ts b/runtime_tests/node/vitest.config.ts
index a2c74bbbed..5387c11fde 100644
--- a/runtime_tests/node/vitest.config.ts
+++ b/runtime_tests/node/vitest.config.ts
@@ -1,5 +1,6 @@
 /// <reference types="vitest" />
 import { defineConfig } from 'vitest/config'
+import config from '../../vitest.config'
 
 export default defineConfig({
   test: {
@@ -9,5 +10,9 @@ export default defineConfig({
     globals: true,
     include: ['**/runtime_tests/node/**/*.+(ts|tsx|js)'],
     exclude: ['**/runtime_tests/node/vitest.config.ts'],
+    coverage: {
+      ...config.test?.coverage,
+      reportsDirectory: './coverage/raw/runtime-node',
+    },
   },
 })
diff --git a/runtime_tests/wrangler/vitest.config.ts b/runtime_tests/wrangler/vitest.config.ts
index 4b8af9b110..7eb5c620a1 100644
--- a/runtime_tests/wrangler/vitest.config.ts
+++ b/runtime_tests/wrangler/vitest.config.ts
@@ -1,10 +1,15 @@
 /// <reference types="vitest" />
 import { defineConfig } from 'vitest/config'
+import config from '../../vitest.config'
 
 export default defineConfig({
   test: {
     globals: true,
     include: ['**/runtime_tests/wrangler/**/(*.)+(test).+(ts|tsx)'],
     exclude: ['**/runtime_tests/wrangler/vitest.config.ts'],
+    coverage: {
+      ...config.test?.coverage,
+      reportsDirectory: './coverage/raw/runtime-wrangler',
+    },
   },
 })
diff --git a/vitest.config.ts b/vitest.config.ts
index 90470c8b36..471b29da6a 100644
--- a/vitest.config.ts
+++ b/vitest.config.ts
@@ -5,6 +5,9 @@ export default defineConfig({
   esbuild: {
     jsx: 'automatic',
     jsxImportSource: __dirname + '/../src/jsx',
+    // sourcemap: true,
+    // treeShaking: false,
+    // minify: false,
   },
   test: {
     globals: true,
@@ -12,8 +15,10 @@ export default defineConfig({
     exclude: [...configDefaults.exclude, '**/sandbox/**', '**/*.case.test.+(ts|tsx|js)'],
     setupFiles: ['./src/test-utils/setup-vitest.ts'],
     coverage: {
-      provider: 'v8',
-      reporter: ['text'],
+      enabled: true,
+      provider: 'istanbul',
+      reportsDirectory: './coverage/raw/default',
+      reporter: ['json'],
     },
     pool: 'forks',
   },