Add definitions for json-schema-generator (#47272)

* Add definitions for json-schema-generator

* fix tests

* Incorporate PR feedback

* Fix formatting

types/json-schema-generator/index.d.ts

@@ -0,0 +1,13 @@
+// Type definitions for json-schema-generator 2.0
+// Project: https://github.com/krg7880/json-schema-generator
+// Definitions by: Marcell Toth <https://github.com/marcelltoth>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+
+import { JSONSchema4 } from 'json-schema';
+
+export = jsonToSchema;
+
+/**
+ * JSON schema generated based on draft-v4 of the specification.
+ */
+declare function jsonToSchema(schema: object): JSONSchema4;

types/json-schema-generator/json-schema-generator-tests.ts

@@ -0,0 +1,5 @@
+import jsonToSchema = require("json-schema-generator");
+
+const obj = jsonToSchema({a: 4}); // $ExpectType JSONSchema4
+
+const withString = jsonToSchema("{a: 4}"); // $ExpectError

types/json-schema-generator/tsconfig.json

@@ -0,0 +1,23 @@
+{
+    "compilerOptions": {
+        "module": "commonjs",
+        "lib": [
+            "es6"
+        ],
+        "noImplicitAny": true,
+        "noImplicitThis": true,
+        "strictFunctionTypes": true,
+        "strictNullChecks": true,
+        "baseUrl": "../",
+        "typeRoots": [
+            "../"
+        ],
+        "types": [],
+        "noEmit": true,
+        "forceConsistentCasingInFileNames": true
+    },
+    "files": [
+        "index.d.ts",
+        "json-schema-generator-tests.ts"
+    ]
+}

types/json-schema-generator/tslint.json

@@ -0,0 +1 @@
+{ "extends": "dtslint/dt.json" }