switch to vitest and get some actual results!

vitest.config.ts

@@ -0,0 +1,38 @@
+import { defineConfig } from 'vitest/config';
+import solidPlugin from 'vite-plugin-solid';
+import { resolve } from 'path'
+import type { Plugin } from 'vite';
+import { CoverageReporter, CoverageV8Options } from 'vitest/node';
+
+export default defineConfig({
+    plugins: [
+        solidPlugin(),
+        reportWith('lcov', 'text')
+    ],
+    resolve: {
+        conditions: ['development', 'browser'],
+        alias: [
+            { find: '~', replacement: resolve(__dirname, './src') }
+        ]
+    },
+    test: {
+        environment: 'jsdom',
+        coverage: {
+            reporter: ['lcov', 'text-summary', 'text'],
+            reportsDirectory: './.coverage',
+            all: false
+        },
+    },
+});
+
+function reportWith(...reporter: CoverageReporter[]): Plugin {
+    return {
+        name: 'add reporters',
+
+        config(userConf, env) {
+            if (userConf.test) {
+                userConf.test.coverage = { ...userConf.test.coverage, reporter } as CoverageV8Options;
+            }
+        },
+    }
+}