build: Support ESM type declarations & remove test files in dist (#21)

* fix(*): migrate rollup to tsup, support esm correctly, remove *.spec.* for dist

* chore: update

* postbuild

* Update .scripts/postbuild.sh

* Update package.json

Co-authored-by: Jonghyeon Ko <jonghyeon@toss.im>

---------

Co-authored-by: raon0211 <raon0211@toss.im>

.gitignore

@@ -13,7 +13,6 @@
 node_modules
 coverage
 dist
-esm
 .junit
 out
 *.d.ts

package.json

@@ -17,49 +17,84 @@
     "./package.json": "./package.json"
   },
   "files": [
-    "dist/**/*",
-    "esm/**/*",
+    "dist",
     "*.d.ts"
   ],
   "publishConfig": {
     "access": "public",
     "main": "./dist/index.js",
+    "module": "./dist/index.mjs",
     "types": "./dist/index.d.ts",
     "exports": {
       ".": {
-        "types": "./dist/index.d.ts",
-        "import": "./esm/index.mjs",
-        "require": "./dist/index.js"
+        "import": {
+          "types": "./dist/index.d.mts",
+          "default": "./dist/index.mjs"
+        },
+        "require": {
+          "types": "./dist/index.d.ts",
+          "default": "./dist/index.js"
+        }
       },
       "./array": {
-        "types": "./dist/array/index.d.ts",
-        "import": "./esm/array/index.mjs",
-        "require": "./dist/array/index.js"
+        "import": {
+          "types": "./dist/array/index.d.mts",
+          "default": "./dist/array/index.mjs"
+        },
+        "require": {
+          "types": "./dist/array/index.d.ts",
+          "default": "./dist/array/index.js"
+        }
       },
       "./function": {
-        "types": "./dist/function/index.d.ts",
-        "import": "./esm/function/index.mjs",
-        "require": "./dist/function/index.js"
+        "import": {
+          "types": "./dist/function/index.d.mts",
+          "default": "./dist/function/index.mjs"
+        },
+        "require": {
+          "types": "./dist/function/index.d.ts",
+          "default": "./dist/function/index.js"
+        }
       },
       "./math": {
-        "types": "./dist/math/index.d.ts",
-        "import": "./esm/math/index.mjs",
-        "require": "./dist/math/index.js"
+        "import": {
+          "types": "./dist/math/index.d.mts",
+          "default": "./dist/math/index.mjs"
+        },
+        "require": {
+          "types": "./dist/math/index.d.ts",
+          "default": "./dist/math/index.js"
+        }
       },
       "./object": {
-        "types": "./dist/object/index.d.ts",
-        "import": "./esm/object/index.mjs",
-        "require": "./dist/object/index.js"
+        "import": {
+          "types": "./dist/object/index.d.mts",
+          "default": "./dist/object/index.mjs"
+        },
+        "require": {
+          "types": "./dist/object/index.d.ts",
+          "default": "./dist/object/index.js"
+        }
       },
       "./predicate": {
-        "types": "./dist/predicate/index.d.ts",
-        "import": "./esm/predicate/index.mjs",
-        "require": "./dist/predicate/index.js"
+        "import": {
+          "types": "./dist/predicate/index.d.mts",
+          "default": "./dist/predicate/index.mjs"
+        },
+        "require": {
+          "types": "./dist/predicate/index.d.ts",
+          "default": "./dist/predicate/index.js"
+        }
       },
       "./promise": {
-        "types": "./dist/promise/index.d.ts",
-        "import": "./esm/promise/index.mjs",
-        "require": "./dist/promise/index.js"
+        "import": {
+          "types": "./dist/promise/index.d.mts",
+          "default": "./dist/promise/index.mjs"
+        },
+        "require": {
+          "types": "./dist/promise/index.d.ts",
+          "default": "./dist/promise/index.js"
+        }
       },
       "./package.json": "./package.json"
     }
@@ -70,7 +105,6 @@
     "@babel/preset-typescript": "^7.24.1",
     "@changesets/changelog-github": "^0.5.0",
     "@changesets/cli": "^2.27.1",
-    "@toss/rollup-config": "0.2.0-canary.0",
     "@types/babel__core": "^7",
     "@types/babel__preset-env": "^7",
     "@types/broken-link-checker": "^0",
@@ -84,14 +118,14 @@
     "eslint-config-prettier": "^8.5.0",
     "lodash": "^4.17.21",
     "prettier": "^3.2.5",
-    "rollup": "^2.78.0",
+    "tsup": "^8.1.0",
     "typescript": "^5.4.5",
     "vitest": "^1.5.2"
   },
   "sideEffects": false,
   "scripts": {
     "prepack": "yarn build",
-    "build": "rm -rf dist esm && tsc -p tsconfig.json --declaration --emitDeclarationOnly --declarationDir dist && rollup -c rollup.config.js && ./.scripts/postbuild.sh",
+    "build": "tsup && ./.scripts/postbuild.sh",
     "test": "vitest run --coverage --typecheck"
   }
-}
+}

rollup.config.js

@@ -1,5 +0,0 @@
-const { generateRollupConfig } = require('@toss/rollup-config');
-
-module.exports = generateRollupConfig({
-  packageDir: __dirname,
-});

tsup.config.ts

@@ -0,0 +1,9 @@
+import { defineConfig } from 'tsup'
+
+export default defineConfig({
+  format: ['cjs', 'esm'],
+  entry: ['src/*.ts', 'src/*/*.ts', '!**/*.{spec,test,test-d}.*'],
+  sourcemap: true,
+  dts: true,
+  clean: true,
+})