Hacky coverage

coverage.cjs

@@ -0,0 +1,43 @@
+"use strict";
+
+const esbuild = require("esbuild");
+const { esbuildPluginIstanbul } = require("esbuild-plugin-istanbul");
+
+(async function () {
+    const { default: getStdin } = await import("get-stdin");
+    const plugins = [
+        esbuildPluginIstanbul({
+            filter: /\.js$/,
+            loader: "js",
+            name: "istanbul-loader-js",
+        }),
+    ];
+    const stdin = {
+        contents: await getStdin(),
+        resolveDir: process.cwd(),
+        sourcefile: "tests.js",
+        loader: "js",
+    };
+
+    const context = await esbuild.context({
+        absWorkingDir: process.cwd(),
+        entryPoints: [],
+        write: false,
+        bundle: true,
+        sourcemap: "inline",
+        sourcesContent: true,
+        define: { global: "window", "process.env.NODE_DEBUG": '""' },
+        external: ["fs"],
+        target: "es2022",
+        plugins,
+        color: true,
+        stdin,
+    });
+
+    const { outputFiles } = await context.rebuild();
+    const js = outputFiles[0].text;
+
+    context.dispose();
+
+    process.stdout.write(js);
+})();

package.json

@@ -34,7 +34,7 @@
     "test-node": "mocha --recursive -R dot \"test/**/*-test.js\"",
     "test-dev": "npm run test-node --  -n watch -n  watch-path=test --node-option watch-path=lib -R min",
     "test-headless": "mochify --driver puppeteer",
-    "test-coverage": "nyc npm run test-headless -- --transform [ babelify --ignore [ test ] --plugins [ babel-plugin-istanbul ] ]",
+    "test-coverage": "nyc nyc --exclude-after-remap false mochify --driver puppeteer --bundle 'node coverage.cjs'",
     "test-cloud": "npm run test-headless -- --wd",
     "test-webworker": "mochify --driver puppeteer --serve . test/webworker/webworker-support-assessment.js",
     "test-esm-support": "mocha test/es2015/module-support-assessment-test.mjs",
@@ -94,16 +94,18 @@
     "@mochify/driver-puppeteer": "^0.4.0",
     "@mochify/driver-webdriver": "^0.2.1",
     "@sinonjs/eslint-config": "^5.0.3",
-    "@sinonjs/referee-sinon": "12.0.0",
     "@sinonjs/eslint-plugin-no-prototype-methods": "^0.1.1",
     "@sinonjs/referee": "^11.0.1",
+    "@sinonjs/referee-sinon": "12.0.0",
     "@studio/changes": "^3.0.0",
     "babel-plugin-istanbul": "^6.1.1",
     "babelify": "^10.0.0",
     "browserify": "^16.5.2",
     "debug": "^4.3.4",
     "dependency-check": "^4.1.0",
     "esbuild": "^0.23.1",
+    "esbuild-plugin-istanbul": "^0.3.0",
+    "get-stdin": "^9.0.0",
     "lint-staged": "^15.2.2",
     "mocha": "^10.4.0",
     "nyc": "^15.1.0",