build: Separate tsconfig for tests

tests/jest.config.ts

@@ -1,9 +1,7 @@
 import { createDefaultPreset, type JestConfigWithTsJest } from 'ts-jest';
 
 const presetConfig = createDefaultPreset({
-  tsconfig: {
-    target: 'ESNext',
-  },
+  tsconfig: './tsconfig.test.json',
 });
 
 const jestConfig: JestConfigWithTsJest = {

tsconfig.app.json

@@ -0,0 +1,26 @@
+{
+  "compilerOptions": {
+    "module": "NodeNext",
+    "moduleResolution": "NodeNext",
+
+    "target": "ES6",
+    "downlevelIteration": true,
+    "allowSyntheticDefaultImports": true,
+    "esModuleInterop": true,
+
+    "types": [],
+    "lib": ["ES6", "ES2019"],
+    "skipLibCheck": true,
+
+    "strict": true,
+    "noUnusedParameters": false,
+    "noUnusedLocals": false
+  },
+  "include": ["src"],
+  "exclude": [
+    "**/*.spec.ts",
+    "**/*.test.ts",
+    "**/*.contract.ts",
+    "**/*.mocks.ts"
+  ]
+}

tsconfig.build.json

@@ -1,21 +1,9 @@
 {
-  "extends": "./tsconfig.json",
+  "extends": "./tsconfig.app.json",
 
   "compilerOptions": {
     "declaration": true,
     "declarationDir": "./dist",
-    "outDir": "./dist",
-    "module": "ESNext",
-    "target": "ESNext"
-  },
-  "include": [
-    "src/**/*"
-  ],
-  "exclude": [
-    "dist",
-    "**/*.spec.ts",
-    "**/*.test.ts",
-    "**/*.contract.ts",
-    "**/*.mocks.ts"
-  ]
+    "outDir": "./dist"
+  }
 }

tsconfig.json

@@ -1,23 +1,7 @@
 {
-  "compilerOptions": {
-    "module": "NodeNext",
-    "moduleResolution": "NodeNext",
-
-    "target": "ES6",
-    "downlevelIteration": true,
-    "allowSyntheticDefaultImports": true,
-    "esModuleInterop": true,
-
-    "types": ["jest", "node"],
-    "lib": ["ES6"],
-    "skipLibCheck": true,
-
-    "strict": true,
-    "noUnusedParameters": false,
-    "noUnusedLocals": false,
-  },
-  "exclude": [
-    "node_modules",
-    "dist"
+  "files": [],
+  "references": [
+    { "path": "./tsconfig.app.json" },
+    { "path": "./tsconfig.test.json" }
   ]
 }

tsconfig.test.json

@@ -0,0 +1,11 @@
+{
+  "extends": ["./tsconfig.app.json"],
+  "compilerOptions": {
+    "types": ["jest", "node"]
+  },
+  "include": [
+    "**/*.spec.ts",
+    "tests"
+  ],
+  "exclude": []
+}