refactor: simplify api bundling

tooling/api/package.json

@@ -7,11 +7,14 @@
     "type": "opencollective",
     "url": "https://opencollective.com/tauri"
   },
+  "main": "./index.cjs",
+  "module": "./index.js",
+  "types": "./index.d.ts",
   "exports": {
     "./package.json": "./package.json"
   },
   "scripts": {
-    "build": "yarn tsup && node ./scripts/after-build.cjs",
+    "build": "yarn tsup",
     "npm-pack": "yarn build && cd ./dist && npm pack",
     "npm-publish": "yarn build && cd ./dist && yarn publish --access public --loglevel silly",
     "lint": "eslint --ext ts \"./src/**/*.ts\"",
@@ -40,6 +43,7 @@
     "yarn": ">= 1.19.1"
   },
   "devDependencies": {
+    "@types/node": "^20.5.7",
     "@typescript-eslint/eslint-plugin": "5.62.0",
     "@typescript-eslint/parser": "5.62.0",
     "eslint": "8.46.0",

tooling/api/tsconfig.json

@@ -1,10 +1,10 @@
 {
   "compilerOptions": {
-    "target": "es2020",
+    "target": "es2021",
     "module": "esnext",
     "strict": true,
     "esModuleInterop": true,
-    "moduleResolution": "node",
+    "moduleResolution": "bundler",
     "skipLibCheck": true,
     "noUnusedLocals": true,
     "noImplicitAny": true,

tooling/api/tsup.config.ts

@@ -3,32 +3,77 @@
 // SPDX-License-Identifier: MIT
 
 import { defineConfig } from 'tsup'
+import { readFileSync, readdirSync, writeFileSync, copyFileSync } from 'fs'
 
 export default defineConfig(() => [
   {
-    entry: ['src/*.ts'],
+    entry: ['src/**/*.ts'],
     outDir: 'dist',
     format: ['esm', 'cjs'],
-    clean: true,
-    minify: true,
     platform: 'browser',
-    dts: {
-      resolve: true
-    }
+    target: 'es2021',
+    clean: true,
+    minify: false,
+    bundle: false,
+    dts: { resolve: true },
+    onSuccess
   },
   {
     entry: { bundle: 'src/index.ts' },
     outDir: '../../core/tauri/scripts',
-    format: ['iife'],
-    globalName: '__TAURI_IIFE__',
+    format: 'iife',
+    platform: 'browser',
+    target: 'es2021',
     clean: false,
     minify: true,
-    platform: 'browser',
     dts: false,
+    globalName: '__TAURI_IIFE__',
     // esbuild `globalName` option generates `var __TAURI_IIFE__ = (() => {})()`
     // and var is not guaranteed to assign to the global `window` object so we make sure to assign it
     footer: {
       js: 'window.__TAURI__ = __TAURI_IIFE__'
     }
   }
 ])
+
+async function onSuccess() {
+  // append our api modules to `exports` in `package.json` then write it to `./dist`
+  const pkg = JSON.parse(readFileSync('package.json', 'utf8'))
+  const modules = readdirSync('src')
+    .filter((e) => e !== 'helpers')
+    .map((mod) => mod.split('.')[0])
+
+  const outputPkg = {
+    ...pkg,
+    devDependencies: {},
+    exports: Object.assign(
+      {},
+      ...modules.map((mod) => {
+        let temp = {}
+        let key = `./${mod}`
+        if (mod === 'index') {
+          key = '.'
+        }
+        // @ts-expect-error
+        temp[key] = {
+          import: `./${mod}.js`,
+          require: `./${mod}.cjs`,
+          types: `./${mod}.d.ts`
+        }
+        return temp
+      }),
+      // if for some reason in the future we manually add something in the `exports` field
+      // this will ensure it doesn't get overwritten by the logic above
+      { ...(pkg.exports || {}) }
+    )
+  }
+  writeFileSync('dist/package.json', JSON.stringify(outputPkg, undefined, 2))
+
+  // copy necessary files like `CHANGELOG.md` , `README.md` and Licenses to `./dist`
+  const dir = readdirSync('.')
+  const files = [
+    ...dir.filter((f) => f.startsWith('LICENSE')),
+    ...dir.filter((f) => f.endsWith('.md'))
+  ]
+  files.forEach((f) => copyFileSync(f, `dist/${f}`))
+}