use rollup

karma.conf.cjs

@@ -10,9 +10,9 @@ const output = {
 
 module.exports = function (config) {
   config.set({
-    frameworks: ["webpack", "mocha"],
+    frameworks: ["rollup", "mocha"],
     preprocessors: {
-      "**/*.ts": ["webpack"],
+      "**/*.ts": ["rollup"],
     },
 
     files: [
@@ -34,33 +34,5 @@ module.exports = function (config) {
         timeout: 6000, // Default is 2s
       },
     },
-    webpack: {
-      mode: "development",
-      devtool: 'source-map',
-      resolve: {
-        // Add `.ts` and `.tsx` as a resolvable extension.
-        extensions: [".ts", ".tsx", ".js"],
-        plugins: [new ResolveTypeScriptPlugin()],
-      },
-      module: {
-        rules: [
-          {
-            test: /\.wasm$/,
-            type: "asset/resource",
-          },
-          {
-            test: /\.(js|tsx?)$/,
-            loader: "ts-loader",
-            exclude: /node_modules|\.d\.ts$/,
-            options: { configFile: "tsconfig.karma.json" },
-          },
-          {
-            test: /\.d\.ts$/,
-            loader: "ignore-loader",
-          },
-        ],
-      },
-      output,
-    },
   });
 };

package-lock.json

@@ -60,6 +60,7 @@
         "karma": "^6.3.12",
         "karma-chrome-launcher": "^3.1.0",
         "karma-mocha": "^2.0.1",
+        "karma-rollup-preprocessor": "^7.0.8",
         "karma-webpack": "^5.0.0",
         "lint-staged": "^13.0.3",
         "mocha": "^9.1.3",
@@ -4061,6 +4062,12 @@
         "node": ">=4.0"
       }
     },
+    "node_modules/debounce": {
+      "version": "1.2.1",
+      "resolved": "https://registry.npmjs.org/debounce/-/debounce-1.2.1.tgz",
+      "integrity": "sha512-XRRe6Glud4rd/ZGQfiV1ruXSfbvfJedlV9Y6zOlP+2K04vBYiJEte6stfFkCP03aMnY5tsipamumUjL14fofug==",
+      "dev": true
+    },
     "node_modules/debug": {
       "version": "4.3.4",
       "resolved": "https://registry.npmjs.org/debug/-/debug-4.3.4.tgz",
@@ -7086,6 +7093,22 @@
         "minimist": "^1.2.3"
       }
     },
+    "node_modules/karma-rollup-preprocessor": {
+      "version": "7.0.8",
+      "resolved": "https://registry.npmjs.org/karma-rollup-preprocessor/-/karma-rollup-preprocessor-7.0.8.tgz",
+      "integrity": "sha512-WiuBCS9qsatJuR17dghiTARBZ7LF+ml+eb7qJXhw7IbsdY0lTWELDRQC/93J9i6636CsAXVBL3VJF4WtaFLZzA==",
+      "dev": true,
+      "dependencies": {
+        "chokidar": "^3.3.1",
+        "debounce": "^1.2.0"
+      },
+      "engines": {
+        "node": ">= 8.0.0"
+      },
+      "peerDependencies": {
+        "rollup": ">= 1.0.0"
+      }
+    },
     "node_modules/karma-webpack": {
       "version": "5.0.0",
       "resolved": "https://registry.npmjs.org/karma-webpack/-/karma-webpack-5.0.0.tgz",

package.json

@@ -79,6 +79,7 @@
     "karma": "^6.3.12",
     "karma-chrome-launcher": "^3.1.0",
     "karma-mocha": "^2.0.1",
+    "karma-rollup-preprocessor": "^7.0.8",
     "karma-webpack": "^5.0.0",
     "lint-staged": "^13.0.3",
     "mocha": "^9.1.3",