feat: use ajv for defaultconfig command (#117)

BREAKING CHANGE: `defaultconfig` command now uses ajv to generate default value. A config schema that are not object will throw an error. A config schema with top level default will now throw an error.

package.json

@@ -50,11 +50,11 @@
   },
   "prettier": {},
   "dependencies": {
+    "ajv": "^8.17.1",
     "chalk": "^5.4.1",
     "commander": "^12.1.0",
     "hosted-git-info": "^8.0.2",
     "inquirer": "^12.3.0",
-    "json-schema-defaults": "0.4.0",
     "json-schema-to-typescript": "^15.0.3",
     "npm-package-arg": "^12.0.1",
     "semver": "^7.6.3",

src/commands/defaultconfig.ts

@@ -1,12 +1,14 @@
 import fs from "node:fs";
 import path from "node:path";
 
+import { Ajv, type JSONSchemaType } from "ajv";
 import chalk from "chalk";
 import { Command } from "commander";
-import defaults from "json-schema-defaults";
 
 import util from "../lib/util.js";
 
+const ajv = new Ajv({ useDefaults: true, strict: true });
+
 export function defaultconfigCommand(program: Command) {
 	program
 		.command("defaultconfig [bundle]")
@@ -58,7 +60,9 @@ function action(bundleName?: string) {
 		fs.mkdirSync(cfgPath);
 	}
 
-	const schema = JSON.parse(fs.readFileSync(schemaPath, "utf8"));
+	const schema: JSONSchemaType<unknown> = JSON.parse(
+		fs.readFileSync(schemaPath, "utf8"),
+	);
 	const configPath = path.join(nodecgPath, "cfg/", bundleName + ".json");
 	if (fs.existsSync(configPath)) {
 		console.error(
@@ -67,15 +71,13 @@ function action(bundleName?: string) {
 		);
 	} else {
 		try {
-			fs.writeFileSync(
-				configPath,
-				JSON.stringify(defaults(schema), null, "  "),
-			);
+			const validate = ajv.compile(schema);
+			const data = {};
+			validate(data);
+
+			fs.writeFileSync(configPath, JSON.stringify(data, null, 2));
 			console.log(
-				chalk.green("Success:") +
-					" Created %s's default config from schema\n\n" +
-					JSON.stringify(defaults(schema), null, "  "),
-				bundleName,
+				chalk`{green Success:} Created {bold ${bundleName}}'s default config from schema\n`,
 			);
 		} catch (e) {
 			console.error(chalk.red("Error: ") + String(e));