add bls browser test execution

karma.conf.js

@@ -0,0 +1,26 @@
+// eslint-disable-next-line @typescript-eslint/no-require-imports
+const webpackConfig = require("./webpack.config");
+
+module.exports = function(config) {
+    config.set({
+
+        basePath: "",
+        frameworks: ["mocha", "chai"],
+        files: ["test/unit/*.ts"],
+        exclude: [],
+        preprocessors: {
+            "test/**/*.ts": ["webpack"]
+        },
+        webpack: {
+            mode: "production",
+            node: webpackConfig.node,
+            module: webpackConfig.module,
+            resolve: webpackConfig.resolve
+        },
+        reporters: ["spec"],
+
+        browsers: ["ChromeHeadless"],
+
+        singleRun: true
+    });
+};

package.json

@@ -30,7 +30,9 @@
     "lint:fix": "yarn run lint --fix",
     "pretest": "yarn check-types",
     "prepublishOnly": "yarn build",
-    "test:unit": "nyc --cache-dir .nyc_output/.cache -r lcov -e .ts mocha --colors -r ts-node/register 'test/unit/**/*.test.ts' && nyc report",
+    "test:web:unit": "karma start",
+    "test:node:unit": "nyc --cache-dir .nyc_output/.cache -r lcov -e .ts mocha --colors -r ts-node/register 'test/unit/**/*.test.ts' && nyc report",
+    "test:unit": "yarn run test:node:unit && yarn run test:web:unit",
     "test": "yarn test:unit",
     "coverage": "codecov -F bls",
     "benchmark": "node -r ./.babel-register test/benchmarks"
@@ -45,6 +47,14 @@
     "@chainsafe/benchmark-utils": "^0.1.0",
     "js-sha256": "^0.9.0",
     "js-yaml": "^3.13.1",
+    "karma": "^4.4.1",
+    "karma-chai": "^0.1.0",
+    "karma-chrome-launcher": "^3.1.0",
+    "karma-cli": "^2.0.0",
+    "karma-mocha": "^1.3.0",
+    "karma-spec-reporter": "^0.0.32",
+    "karma-webpack": "^4.0.2",
+    "ts-loader": "^6.2.1",
     "webpack": "^4.30.0",
     "webpack-cli": "^3.3.2"
   }

webpack.config.js

@@ -1,6 +1,18 @@
 module.exports = {
+  entry: "./src/index.ts",
   mode: "production",
   node: {
     fs: "empty"
+  },
+  output: {
+    filename: "dist/bundle.js"
+  },
+  resolve: {
+    extensions: [".ts", ".js"]
+  },
+  module: {
+    rules: [
+      {test: /\.ts$/, use: {loader: "ts-loader", options: {transpileOnly: true}}}
+    ]
   }
 };