add codemod

autopublish-test/.gitignore

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+# Dependencies
+node_modules/
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+
+# Build artifacts
+target/
+dist/
+build/
+
+# Temporary files
+*.tmp
+*.temp
+.cache/
+
+# Environment files
+.env
+.env.local
+
+# IDE files
+.vscode/
+.idea/
+*.swp
+*.swo
+
+# OS files
+.DS_Store
+Thumbs.db
+
+# Package bundles
+*.tar.gz
+*.tgz 

autopublish-test/README.md

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+# autopublish-test
+
+Transform legacy code patterns
+
+## Installation
+
+```bash
+# Install from registry
+codemod run autopublish-test
+
+# Or run locally
+codemod run -w workflow.yaml
+```
+
+## Usage
+
+This codemod transforms typescript code by:
+
+- Converting `var` declarations to `const`/`let`
+- Removing debug statements
+- Modernizing syntax patterns
+
+## Development
+
+```bash
+# Test the transformation
+npm test
+
+# Validate the workflow
+codemod validate -w workflow.yaml
+
+# Publish to registry
+codemod login
+codemod publish
+```
+
+## License
+
+MIT 

autopublish-test/codemod.yaml

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+schema_version: "1.0"
+
+name: "autopublish-test"
+version: "0.1.0"
+description: "Transform legacy code patterns"
+author: "Author <[email protected]>"
+license: "MIT"
+workflow: "workflow.yaml"
+category: "migration"
+
+targets:
+  languages: ["typescript"]
+
+keywords: ["transformation", "migration"]
+
+registry:
+  access: "public"
+  visibility: "public"

autopublish-test/package.json

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+{
+	"name": "autopublish-test",
+	"version": "0.1.0",
+	"description": "Transform legacy code patterns",
+	"type": "module",
+	"devDependencies": {
+		"@codemod.com/jssg-types": "^1.0.3",
+		"typescript": "^5.8.3"
+	},
+	"scripts": {
+		"test": "npx codemod@latest jssg test -l typescript ./scripts/codemod.ts",
+		"check-types": "npx tsc --noEmit"
+	}
+}

autopublish-test/scripts/codemod.ts

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+import type { SgRoot } from "codemod:ast-grep";
+import type TS from "codemod:ast-grep/langs/typescript";
+
+async function transform(root: SgRoot<TS>): Promise<string> {
+	const rootNode = root.root();
+
+	const nodes = rootNode.findAll({
+		rule: {
+			pattern: "var $VAR = $VALUE",
+		},
+	});
+
+	const edits = nodes.map((node) => {
+		const varName = node.getMatch("VAR")?.text();
+		const value = node.getMatch("VALUE")?.text();
+		return node.replace(`const ${varName} = ${value}`);
+	});
+
+	const newSource = rootNode.commitEdits(edits);
+	return newSource;
+}
+
+export default transform;

autopublish-test/tests/fixtures/expected.js

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+const oldVariable = "should be const"
+const anotherVar = 42
+console.log("debug statement"); 

autopublish-test/tsconfig.json

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+{
+  "compilerOptions": {
+    "module": "NodeNext",
+    "moduleResolution": "NodeNext",
+    "types": ["@codemod.com/jssg-types"],
+    "allowImportingTsExtensions": true,
+    "noEmit": true,
+    "verbatimModuleSyntax": true,
+    "erasableSyntaxOnly": true,
+    "strict": true,
+    "strictNullChecks": true,
+    "noImplicitReturns": true,
+    "noFallthroughCasesInSwitch": true,
+    "noUncheckedIndexedAccess": true
+  },
+  "exclude": ["tests"]
+}

autopublish-test/workflow.yaml

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+version: "1"
+
+nodes:
+  - id: apply-transforms
+    name: Apply AST Transformations
+    type: automatic
+    steps:
+      - name: "Scan typescript files and apply fixes"
+        js-ast-grep:
+          js_file: scripts/codemod.ts
+          language: "typescript"