feat: add linting (#51)

Co-authored-by: Muhammad Atif Ali <atif@coder.com>

.github/workflows/ci.yaml

@@ -21,11 +21,14 @@ jobs:
         with:
           bun-version: latest
       - run: bun test
-  fmt:
+  pretty:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
       - uses: oven-sh/setup-bun@v1
         with:
           bun-version: latest
-      - run: bun fmt:ci
+      - name: Format
+        run: bun fmt:ci
+      - name: Lint
+        run: bun install && bun lint

.sample/README.md

@@ -11,14 +11,14 @@ tags: [helper]
 
 <!-- Describes what this module does -->
 
-<!-- Add a screencast or screenshot here  put them in .images directory -->
-
 ```hcl
 module "MODULE_NAME" {
     source = "https://registry.coder.com/modules/MODULE_NAME"
 }
 ```
 
+<!-- Add a screencast or screenshot here  put them in .images directory -->
+
 ## Examples
 
 ### Example 1

lint.ts

@@ -0,0 +1,96 @@
+import { readFile, readdir, stat } from "fs/promises";
+import * as path from "path";
+import * as marked from "marked";
+import grayMatter from "gray-matter";
+
+const files = await readdir(".", { withFileTypes: true });
+const dirs = files.filter(
+  (f) => f.isDirectory() && !f.name.startsWith(".") && f.name !== "node_modules"
+);
+
+let badExit = false;
+
+// error reports an error to the console and sets badExit to true
+// so that the process will exit with a non-zero exit code.
+const error = (...data: any[]) => {
+    console.error(...data);
+    badExit = true;
+}
+
+// Ensures that each README has the proper format.
+// Exits with 0 if all is good!
+for (const dir of dirs) {
+  const readme = path.join(dir.name, "README.md");
+  // Ensure exists
+  try {
+    await stat(readme);
+  } catch (ex) {
+    throw new Error(`Missing README.md in ${dir.name}`);
+  }
+  const content = await readFile(readme, "utf8");
+  const matter = grayMatter(content);
+  const data = matter.data as {
+    display_name?: string;
+    description?: string;
+    icon?: string;
+    maintainer_github?: string;
+    partner_github?: string;
+    verified?: boolean;
+    tags?: string[];
+  };
+  if (!data.display_name) {
+    error(dir.name, "missing display_name");
+  }
+  if (!data.description) {
+    error(dir.name, "missing description");
+  }
+  if (!data.icon) {
+    error(dir.name, "missing icon");
+  }
+  if (!data.maintainer_github) {
+    error(dir.name, "missing maintainer_github");
+  }
+  try {
+    await stat(path.join(".", dir.name, data.icon));
+  } catch (ex) {
+    error(dir.name, "icon does not exist", data.icon);
+  }
+
+  const tokens = marked.lexer(content);
+  // Ensure there is an h1 and some text, then a code block
+
+  let h1 = false;
+  let code = false;
+  let paragraph = false;
+
+  for (const token of tokens) {
+    if (token.type === "heading" && token.depth === 1) {
+      h1 = true;
+      continue;
+    }
+    if (h1 && token.type === "heading") {
+      break;
+    }
+    if (token.type === "paragraph") {
+      paragraph = true;
+      continue;
+    }
+    if (token.type === "code") {
+      code = true;
+      continue;
+    }
+  }
+  if (!h1) {
+    error(dir.name, "missing h1");
+  }
+  if (!paragraph) {
+    error(dir.name, "missing paragraph after h1");
+  }
+  if (!code) {
+    error(dir.name, "missing example code block after paragraph");
+  }
+}
+
+if (badExit) {
+  process.exit(1);
+}

package.json

@@ -3,10 +3,13 @@
   "scripts": {
     "test": "bun test",
     "fmt": "bun x prettier -w **/*.ts **/*.md *.md && terraform fmt **/*.tf",
-    "fmt:ci": "bun x prettier --check **/*.ts **/*.md *.md && terraform fmt -check **/*.tf"
+    "fmt:ci": "bun x prettier --check **/*.ts **/*.md *.md && terraform fmt -check **/*.tf",
+    "lint": "bun run lint.ts"
   },
   "devDependencies": {
-    "bun-types": "^1.0.3"
+    "bun-types": "^1.0.3",
+    "gray-matter": "^4.0.3",
+    "marked": "^9.0.3"
   },
   "peerDependencies": {
     "typescript": "^5.0.0"

tsconfig.json

@@ -2,6 +2,8 @@
   "compilerOptions": {
     "target": "esnext",
     "module": "esnext",
+    "allowSyntheticDefaultImports": true,
+    "moduleResolution": "nodenext",
     "types": ["bun-types"]
   }
 }