chore: refactor Jest configuration to allow verbatimModuleSyntax (#32)

juanjoDiaz · Aug 24, 2023 · ceb328a · ceb328a
1 parent bd1a230
commit ceb328a
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Showing 5 changed files with 19 additions and 20 deletions.
diff --git a/jest.config.ts b/jest.config.ts
@@ -1,4 +1,4 @@
-import { JestConfigWithTsJest } from 'ts-jest';
+import type { JestConfigWithTsJest } from 'ts-jest';
 
 const jestConfig: JestConfigWithTsJest = {
   preset: 'ts-jest/presets/default-esm', // or other ESM presets
@@ -9,4 +9,4 @@ const jestConfig: JestConfigWithTsJest = {
   projects: ['<rootDir>/packages/plainjs', '<rootDir>/packages/node', '<rootDir>/packages/whatwg'],
 };
 
-export default jestConfig;
+export = jestConfig;
diff --git a/packages/node/jest.config.ts b/packages/node/jest.config.ts
@@ -1,4 +1,4 @@
-import { JestConfigWithTsJest } from 'ts-jest';
+import type { JestConfigWithTsJest } from 'ts-jest';
 
 const jestConfig: JestConfigWithTsJest = {
   extensionsToTreatAsEsm: ['.ts'],
@@ -15,4 +15,4 @@ const jestConfig: JestConfigWithTsJest = {
   setupFilesAfterEnv: ['<rootDir>/test/utils/setup.ts']
 }
 
-export default jestConfig;
+export = jestConfig;
diff --git a/packages/plainjs/jest.config.ts b/packages/plainjs/jest.config.ts
@@ -1,11 +1,17 @@
-import { JestConfigWithTsJest } from 'ts-jest';
+import type { JestConfigWithTsJest } from 'ts-jest';
 
 const jestConfig: JestConfigWithTsJest = {
-  preset: 'ts-jest/presets/default-esm', // or other ESM presets
+  extensionsToTreatAsEsm: ['.ts'],
   moduleNameMapper: { '^(\\.{1,2}/.*)\\.js$': '$1' },
+  transform: {
+    '^.+\\.m?[t]sx?$': ['ts-jest', {
+      isolatedModules: true,
+      useESM: true
+    }],
+  },
   testEnvironment: 'node',
   testMatch: ['<rootDir>/**/test/*.ts', '<rootDir>/**/test/types/*.ts'],
   collectCoverageFrom: ['src/**'],
 };
 
-export default jestConfig;
+export = jestConfig;
diff --git a/packages/whatwg/jest.config.ts b/packages/whatwg/jest.config.ts
@@ -1,4 +1,4 @@
-import { JestConfigWithTsJest } from 'ts-jest';
+import type { JestConfigWithTsJest } from 'ts-jest';
 
 const jestConfig: JestConfigWithTsJest = {
   extensionsToTreatAsEsm: ['.ts'],
@@ -15,4 +15,4 @@ const jestConfig: JestConfigWithTsJest = {
   setupFilesAfterEnv: ['<rootDir>/test/utils/setup.ts']
 }
 
-export default jestConfig;
+export = jestConfig;
diff --git a/tsconfig.json b/tsconfig.json
@@ -1,9 +1,4 @@
 {
-  "ts-node": {
-    "moduleTypes": {
-      "jest.config.ts": "cjs"
-    }
-  },
   "compilerOptions": {
     /* Language and Environment */
     "target": "es6",
@@ -18,7 +13,7 @@
     /* Interop Constraints */
     "esModuleInterop": true,
     "forceConsistentCasingInFileNames": true,
-    // "verbatimModuleSyntax": true,
+    "verbatimModuleSyntax": true,
     /* Type Checking */
     "allowUnreachableCode": false,
     // "exactOptionalPropertyTypes": true,
@@ -30,9 +25,7 @@
     "preserveConstEnums": true,
     "strict": true,
     /* Projects */
-    "incremental": true,
+    "incremental": true
   },
-  "include": [
-    "src/**/*.ts"
-  ]
-}
+  "include": ["**/src/**/*.ts"]
+}