Fixes #2455

extensions/typescript/package.json

@@ -114,6 +114,10 @@
 			{
 				"fileMatch": "tsconfig.json",
 				"url": "http://json.schemastore.org/tsconfig"
+			},
+			{
+				"fileMatch": "tsconfig.json",
+				"url": "./schemas/tsconfig.schema.json"
 			}
 		]
 	}

extensions/typescript/schemas/tsconfig.schema.json

+{
+	"title": "JSON schema for the JavaScript configuration file",
+	"type": "object",
+	"default": {
+		"compilerOptions": {
+			"module": "commonjs"
+		},
+		"exclude": [
+			"node_modules"
+		]
+	},
+	"properties": {
+		"compilerOptions": {
+			"type": "object",
+			"description": "Instructs the JavaScript language service how to validate .js files",
+			"properties": {
+				"allowJs": {
+					"description": "Includes JS (requires TypeScript 1.8)",
+					"type": "boolean"
+				}
+			}
+		}
+	}
+}
\ No newline at end of file