esm test build

app/package.json

@@ -11,22 +11,22 @@
   "devDependencies": {
     "@sveltejs/kit": "next",
     "@types/prismjs": "^1.16.5",
-    "@typescript-eslint/eslint-plugin": "^4.19.0",
-    "@typescript-eslint/parser": "^4.19.0",
+    "@typescript-eslint/eslint-plugin": "^4.25.0",
+    "@typescript-eslint/parser": "^4.25.0",
     "autoprefixer": "^10.2.5",
-    "cssnano": "^5.0.1",
-    "eslint": "^7.22.0",
-    "eslint-config-prettier": "^8.1.0",
+    "cssnano": "^5.0.4",
+    "eslint": "^7.27.0",
+    "eslint-config-prettier": "^8.3.0",
     "eslint-plugin-svelte3": "^3.2.0",
-    "postcss": "^8.2.10",
+    "postcss": "^8.3.0",
     "postcss-load-config": "^3.0.1",
-    "prettier": "~2.2.1",
-    "prettier-plugin-svelte": "^2.2.0",
-    "svelte": "^3.34.0",
-    "svelte-preprocess": "^4.7.1",
-    "tailwindcss": "^2.1.1",
-    "tslib": "^2.0.0",
-    "typescript": "^4.0.0"
+    "prettier": "~2.3.0",
+    "prettier-plugin-svelte": "^2.3.0",
+    "svelte": "^3.38.2",
+    "svelte-preprocess": "^4.7.3",
+    "tailwindcss": "^2.1.2",
+    "tslib": "^2.2.0",
+    "typescript": "^4.2.4"
   },
   "type": "module",
   "dependencies": {

package.json

@@ -47,13 +47,13 @@
     "@rollup/plugin-typescript": "^8.2.1",
     "@sveltejs/kit": "^1.0.0-next.107",
     "@types/jsonwebtoken": "^8.5.1",
-    "@typescript-eslint/eslint-plugin": "^4.23.0",
-    "@typescript-eslint/parser": "^4.23.0",
-    "esbuild": "^0.12.1",
-    "eslint": "^7.26.0",
+    "@typescript-eslint/eslint-plugin": "^4.25.0",
+    "@typescript-eslint/parser": "^4.25.0",
+    "esbuild": "^0.12.2",
+    "eslint": "^7.27.0",
     "eslint-config-prettier": "^8.3.0",
     "prettier": "^2.3.0",
-    "rollup": "^2.48.0",
+    "rollup": "^2.50.0",
     "rollup-plugin-esbuild": "^4.2.3",
     "rollup-plugin-multi-input": "^1.3.0",
     "svelte": "^3.38.2",

rollup.config.js

@@ -14,7 +14,7 @@ export default [
     output: {
       dir: "dist",
       sourcemap: true,
-      format: "cjs",
+      format: "esm",
     },
     plugins: [
       esbuild(),