Add typings for init-package-json (#29356)

types/init-package-json/index.d.ts

@@ -0,0 +1,26 @@
+// Type definitions for init-package-json 1.10
+// Project: https://github.com/npm/init-package-json#readme
+// Definitions by: Kyle Farnung <https://github.com/kfarnung>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+
+declare namespace init_package_json {
+    interface Config {
+        [key: string]: any;
+        get(k: string): any;
+    }
+
+    function yes(conf: Config): boolean;
+}
+
+declare function init_package_json(
+    dir: string,
+    input: string,
+    config: init_package_json.Config | {},
+    cb: (err: any, data: any) => void): void;
+
+declare function init_package_json(
+    dir: string,
+    input: string,
+    cb: (err: any, data: any) => void): void;
+
+export = init_package_json;

types/init-package-json/init-package-json-tests.ts

@@ -0,0 +1,18 @@
+import init_package_json = require("init-package-json");
+
+init_package_json("", "", (err: any, data: any) => {}); // $ExpectType void
+init_package_json("", "", {}, (err: any, data: any) => {}); // $ExpectType void
+init_package_json("", "", { foo: "bar" }, (err: any, data: any) => {}); // $ExpectType void
+
+const config: init_package_json.Config = {
+  foo: "bar",
+  get(k) {
+    return "";
+  },
+};
+
+init_package_json("", "", config, (err: any, data: any) => {}); // $ExpectType void
+
+init_package_json.yes({}); // $ExpectError
+init_package_json.yes({ foo: "bar" }); // $ExpectError
+init_package_json.yes(config); // $ExpectType boolean

types/init-package-json/tsconfig.json

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

types/init-package-json/tslint.json

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