chore(add-cmd): add typescript support

packages/add/.gitignore

@@ -0,0 +1 @@
+*.js

packages/add/.npmignore

@@ -0,0 +1,2 @@
+tsconfig.json
+*.ts

packages/add/index.ts

@@ -0,0 +1,23 @@
+import defaultGenerator from "@webpack-cli/generators/add-generator";
+import modifyConfigHelper from "@webpack-cli/utils/modify-config-helper";
+
+/**
+ * Is called and returns a scaffolding instance, adding properties
+ *
+ * @param	{String[]} args - array of arguments such as
+ * @returns {Function} modifyConfigHelper - A helper function that uses the action
+ * 	we're given on a generator
+ *
+ */
+
+export default function add(...args: string[]): Function {
+	const DEFAULT_WEBPACK_CONFIG_FILENAME: string = "webpack.config.js";
+
+	const filePaths: string[] = args.slice(3);
+	let configFile: string = DEFAULT_WEBPACK_CONFIG_FILENAME;
+	if (filePaths.length) {
+		configFile = filePaths[0];
+	}
+
+	return modifyConfigHelper("add", defaultGenerator, configFile);
+}

packages/add/package.json

@@ -11,5 +11,12 @@
   "dependencies": {
     "@webpack-cli/generators": "^0.0.8",
     "@webpack-cli/utils": "^0.0.8"
+  },
+  "devDependencies": {
+    "@types/node": "^10.3.6",
+    "typescript": "^2.9.2"
+  },
+  "scripts": {
+    "build": "tsc"
   }
 }

packages/add/tsconfig.json

@@ -0,0 +1,3 @@
+{
+  "extends": "../../tsconfig.json"
+}