From 294727600b97f44fc39a7f88e9f7224dfabd1aef Mon Sep 17 00:00:00 2001
From: Elian Doran <contact@eliandoran.me>
Date: Sun, 18 May 2025 11:26:59 +0300
Subject: [PATCH] feat(highlightjs): add test

---
 packages/highlightjs/README.md                |  4 +++
 .../src/syntax_highlighting.spec.ts           | 14 ++++++++
 packages/highlightjs/tsconfig.json            |  3 ++
 packages/highlightjs/tsconfig.lib.json        | 16 ++++++++-
 packages/highlightjs/tsconfig.spec.json       | 36 +++++++++++++++++++
 packages/highlightjs/vite.config.ts           |  4 +--
 6 files changed, 74 insertions(+), 3 deletions(-)
 create mode 100644 packages/highlightjs/src/syntax_highlighting.spec.ts
 create mode 100644 packages/highlightjs/tsconfig.spec.json

diff --git a/packages/highlightjs/README.md b/packages/highlightjs/README.md
index 706753a31..d3897f3f7 100644
--- a/packages/highlightjs/README.md
+++ b/packages/highlightjs/README.md
@@ -5,3 +5,7 @@ This library was generated with [Nx](https://nx.dev).
 ## Building
 
 Run `nx build highlightjs` to build the library.
+
+## Running unit tests
+
+Run `nx test highlightjs` to execute the unit tests via [Vitest](https://vitest.dev/).
diff --git a/packages/highlightjs/src/syntax_highlighting.spec.ts b/packages/highlightjs/src/syntax_highlighting.spec.ts
new file mode 100644
index 000000000..668bb796e
--- /dev/null
+++ b/packages/highlightjs/src/syntax_highlighting.spec.ts
@@ -0,0 +1,14 @@
+import { describe, it } from "vitest";
+import definitions from "./syntax_highlighting.js";
+
+describe("Syntax highlighting definitions", () => {
+    it("every entry is readable", async () => {
+        for (const [ mime, mapping ] of Object.entries(definitions)) {
+            if (mapping === null) {
+                continue;
+            }
+
+            await mapping.loader;
+        }
+    });
+});
diff --git a/packages/highlightjs/tsconfig.json b/packages/highlightjs/tsconfig.json
index c23e61c80..62ebbd946 100644
--- a/packages/highlightjs/tsconfig.json
+++ b/packages/highlightjs/tsconfig.json
@@ -5,6 +5,9 @@
   "references": [
     {
       "path": "./tsconfig.lib.json"
+    },
+    {
+      "path": "./tsconfig.spec.json"
     }
   ]
 }
diff --git a/packages/highlightjs/tsconfig.lib.json b/packages/highlightjs/tsconfig.lib.json
index 89ba670c3..f0a69a32c 100644
--- a/packages/highlightjs/tsconfig.lib.json
+++ b/packages/highlightjs/tsconfig.lib.json
@@ -17,5 +17,19 @@
   "include": [
     "src/**/*.ts"
   ],
-  "references": []
+  "references": [],
+  "exclude": [
+    "vite.config.ts",
+    "vite.config.mts",
+    "vitest.config.ts",
+    "vitest.config.mts",
+    "src/**/*.test.ts",
+    "src/**/*.spec.ts",
+    "src/**/*.test.tsx",
+    "src/**/*.spec.tsx",
+    "src/**/*.test.js",
+    "src/**/*.spec.js",
+    "src/**/*.test.jsx",
+    "src/**/*.spec.jsx"
+  ]
 }
diff --git a/packages/highlightjs/tsconfig.spec.json b/packages/highlightjs/tsconfig.spec.json
new file mode 100644
index 000000000..d5788402a
--- /dev/null
+++ b/packages/highlightjs/tsconfig.spec.json
@@ -0,0 +1,36 @@
+{
+  "extends": "../../tsconfig.base.json",
+  "compilerOptions": {
+    "outDir": "./out-tsc/vitest",
+    "types": [
+      "vitest/globals",
+      "vitest/importMeta",
+      "vite/client",
+      "node",
+      "vitest"
+    ],
+    "forceConsistentCasingInFileNames": true,
+    "noImplicitOverride": true,
+    "noImplicitReturns": true
+  },
+  "include": [
+    "vite.config.ts",
+    "vite.config.mts",
+    "vitest.config.ts",
+    "vitest.config.mts",
+    "src/**/*.test.ts",
+    "src/**/*.spec.ts",
+    "src/**/*.test.tsx",
+    "src/**/*.spec.tsx",
+    "src/**/*.test.js",
+    "src/**/*.spec.js",
+    "src/**/*.test.jsx",
+    "src/**/*.spec.jsx",
+    "src/**/*.d.ts"
+  ],
+  "references": [
+    {
+      "path": "./tsconfig.lib.json"
+    }
+  ]
+}
diff --git a/packages/highlightjs/vite.config.ts b/packages/highlightjs/vite.config.ts
index 4ca8b8341..4bb602837 100644
--- a/packages/highlightjs/vite.config.ts
+++ b/packages/highlightjs/vite.config.ts
@@ -1,4 +1,4 @@
-/// <reference types='vitest' />
+
 import { defineConfig } from 'vite';
 import dts from 'vite-plugin-dts';
 import * as path from 'path';
@@ -6,7 +6,7 @@ import * as path from 'path';
 export default defineConfig(() => ({
   root: __dirname,
   cacheDir: '../../node_modules/.vite/packages/highlightjs',
-  plugins: [dts({ entryRoot: 'src', tsconfigPath: path.join(__dirname, 'tsconfig.lib.json') })],
+  plugins: [dts({ entryRoot: 'src', tsconfigPath: path.join(__dirname, 'tsconfig.lib.json') }), ],
   // Uncomment this if you are using workers.
   // worker: {
   //  plugins: [ nxViteTsPaths() ],