Use tsc for generating declarations

constraints.pro

@@ -65,9 +65,9 @@ gen_enforced_field(WorkspaceCwd, 'repository.url', 'https://github.com/MetaMask/
 % The license for the package must be specified.
 gen_enforced_field(WorkspaceCwd, 'license').
 
-% The type definitions entrypoint the package must be `./dist/index.d.ts`.
-gen_enforced_field(WorkspaceCwd, 'types', './dist/index.d.ts').
-gen_enforced_field(WorkspaceCwd, 'exports["."].types', './dist/index.d.ts').
+% The type definitions entrypoint the package must be `./dist/types/index.d.ts`.
+gen_enforced_field(WorkspaceCwd, 'types', './dist/types/index.d.ts').
+gen_enforced_field(WorkspaceCwd, 'exports["."].types', './dist/types/index.d.ts').
 
 % The entrypoint for the package must be `./dist/index.js`.
 gen_enforced_field(WorkspaceCwd, 'main', './dist/index.js').

package.json

@@ -15,18 +15,19 @@
     ".": {
       "import": "./dist/index.mjs",
       "require": "./dist/index.js",
-      "types": "./dist/index.d.ts"
+      "types": "./dist/types/index.d.ts"
     },
     "./package.json": "./package.json"
   },
   "main": "./dist/index.js",
   "module": "./dist/index.mjs",
-  "types": "./dist/index.d.ts",
+  "types": "./dist/types/index.d.ts",
   "files": [
     "dist"
   ],
   "scripts": {
-    "build": "tsup",
+    "build": "tsup && yarn build:types",
+    "build:types": "tsc --project tsconfig.build.json",
     "build:docs": "typedoc",
     "lint": "yarn lint:eslint && yarn lint:constraints && yarn lint:misc --check && yarn lint:dependencies --check && yarn lint:changelog",
     "lint:changelog": "auto-changelog validate",

tsconfig.build.json

@@ -0,0 +1,23 @@
+{
+  "extends": "./tsconfig.json",
+  "compilerOptions": {
+    "declaration": true,
+    "declarationMap": true,
+    "emitDeclarationOnly": true,
+    "inlineSources": true,
+    "noEmit": false,
+    "outDir": "dist/types",
+    "rootDir": "src",
+    "sourceMap": true
+  },
+  "include": ["./src/**/*.ts"],
+  "exclude": [
+    "./src/**/__fixtures__/**/*",
+    "./src/**/__mocks__/**/*",
+    "./src/**/__test__/**/*",
+    "./src/**/__tests__/**/*",
+    "./src/**/__snapshots__/**/*",
+    "./src/**/*.test.ts",
+    "./src/**/*.test.*.ts"
+  ]
+}

tsup.config.ts

@@ -15,10 +15,6 @@ export default defineConfig({
   // Clean the dist folder before bundling.
   clean: true,
 
-  // Enables TypeScript declaration files.
-  // https://tsup.egoist.dev/#generate-declaration-file
-  dts: true,
-
   // Enables shimming of `__dirname` and `import.meta.url`, so that they work
   // in both CommonJS and ESM.
   // https://tsup.egoist.dev/#inject-cjs-and-esm-shims