diff --git a/editors/vscode/package-lock.json b/editors/vscode/package-lock.json
index 85c2bca8e4f..92e8885dfbe 100644
--- a/editors/vscode/package-lock.json
+++ b/editors/vscode/package-lock.json
@@ -21,7 +21,7 @@
 				"vsce": "^2.11.0"
 			},
 			"engines": {
-				"npm": "^8",
+				"npm": "^8 || ^9",
 				"vscode": "^1.70.0"
 			}
 		},
diff --git a/editors/vscode/package.json b/editors/vscode/package.json
index 713df69cd28..f43702e8999 100644
--- a/editors/vscode/package.json
+++ b/editors/vscode/package.json
@@ -10,19 +10,21 @@
 		"onLanguage:javascriptreact",
 		"onLanguage:typescript",
 		"onLanguage:typescriptreact",
+		"onLanguage:json",
 		"onCommand:rome.syntaxTree"
 	],
 	"main": "./out/main.js",
 	"repository": {
 		"type": "git",
-		"url": "https://github.com/rome/tools.git"
+		"url": "https://github.com/rome/tools.git",
+		"directory": "editors/vscode"
 	},
 	"bugs": {
 		"url": "https://github.com/rome/tools/issues"
 	},
 	"engines": {
 		"vscode": "^1.70.0",
-		"npm": "^8"
+		"npm": "^8 || ^9"
 	},
 	"capabilities": {
 		"untrustedWorkspaces": {
@@ -150,4 +152,4 @@
 		"resolve": "^1.22.1",
 		"vscode-languageclient": "^8.0.2"
 	}
-}
\ No newline at end of file
+}
diff --git a/npm/js-api/tests/formatContent.test.ts b/npm/js-api/tests/formatContent.test.ts
index e6825ea2b72..43c9325cb3b 100644
--- a/npm/js-api/tests/formatContent.test.ts
+++ b/npm/js-api/tests/formatContent.test.ts
@@ -13,7 +13,7 @@ describe("Rome WebAssembly formatContent", () => {
 		rome.shutdown();
 	});
 
-	it("should format content", () => {
+	it("should format JavaScript content", () => {
 		const result = rome.formatContent("function f   () {  }", {
 			filePath: "example.js",
 		});
@@ -22,6 +22,20 @@ describe("Rome WebAssembly formatContent", () => {
 		expect(result.diagnostics).toEqual([]);
 	});
 
+	it("should format JSON content", () => {
+		const result = rome.formatContent(
+			'{ "lorem": "ipsum", "foo": false, "bar": 23, "lorem": "ipsum", "foo": false, "bar": 23 }',
+			{
+				filePath: "example.json",
+			},
+		);
+
+		expect(result.content).toEqual(
+			'{\n\t"lorem": "ipsum",\n\t"foo": false,\n\t"bar": 23,\n\t"lorem": "ipsum",\n\t"foo": false,\n\t"bar": 23\n}\n',
+		);
+		expect(result.diagnostics).toEqual([]);
+	});
+
 	it("should not format and have diagnostics", () => {
 		const content = "function   () {  }";
 		const result = rome.formatContent(content, {
diff --git a/npm/js-api/tsconfig.json b/npm/js-api/tsconfig.json
index b495ae47b1b..cfeaaa64b89 100644
--- a/npm/js-api/tsconfig.json
+++ b/npm/js-api/tsconfig.json
@@ -11,7 +11,8 @@
     "esModuleInterop": true,                             /* Emit additional JavaScript to ease support for importing CommonJS modules. This enables 'allowSyntheticDefaultImports' for type compatibility. */
     "forceConsistentCasingInFileNames": true,            /* Ensure that casing is correct in imports. */
     "strict": true,                                      /* Enable all strict type-checking options. */
-    "skipLibCheck": true                                 /* Skip type checking all .d.ts files. */
+    "skipLibCheck": true,                                 /* Skip type checking all .d.ts files. */
+		"lib": ["ES2021"]
   },
   "exclude": [
     "./tests",