Replace tsup with tsdown

Author: tylerlong

package.json

@@ -36,7 +36,7 @@
     }
   },
   "scripts": {
-    "build": "tsup && tsc -p tsconfig.json --emitDeclarationOnly",
+    "build": "tsdown && tsc -p tsconfig.json --emitDeclarationOnly",
     "format": "biome format --write .",
     "lint": "biome lint --write .",
     "check": "biome check . --write",
@@ -65,7 +65,7 @@
     "stream-browserify": "^3.0.0",
     "string_decoder": "^1.3.0",
     "timers-browserify": "^2.0.12",
-    "tsup": "^8.5.1",
+    "tsdown": "^0.21.10",
     "tsx": "^4.21.0",
     "typescript": "^6.0.3",
     "wait-for-async": "^0.8.1",

tsup.config.ts tsdown.config.tstsup.config.ts renamed to tsdown.config.ts

@@ -1,45 +1,44 @@
-import { defineConfig } from "tsup";
+import { defineConfig } from "tsdown";
 
 const entries = ["src/**/*.ts", "!src/browser-entry.ts"];
 
 export default defineConfig([
   {
-    bundle: false,
     clean: true,
     dts: false,
     entry: entries,
+    fixedExtension: false,
     format: ["esm"],
     outDir: "dist/esm",
     sourcemap: false,
     target: "es2022",
     tsconfig: "tsconfig.json",
+    unbundle: true,
   },
   {
-    bundle: false,
+    cjsDefault: false,
     clean: false,
     dts: false,
     entry: entries,
     format: ["cjs"],
     outDir: "dist/cjs",
-    outExtension() {
-      return { js: ".cjs" };
-    },
+    outExtensions: () => ({ js: ".cjs" }),
     sourcemap: false,
     target: "es2022",
     tsconfig: "tsconfig.json",
+    unbundle: true,
   },
   {
-    bundle: true,
     clean: false,
+    noExternal: [/.*/],
     dts: false,
     entry: {
       index: "src/browser-entry.ts",
     },
     format: ["iife"],
-    noExternal: [/.*/],
     outDir: "dist/iife",
-    outExtension() {
-      return { js: ".js" };
+    outputOptions: {
+      entryFileNames: "[name].js",
     },
     platform: "browser",
     sourcemap: false,