prettier-package-json: Add type definitions (#35790)

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

@@ -0,0 +1,18 @@
+// Type definitions for prettier-package-json 2.1
+// Project: https://github.com/cameronhunter/prettier-package-json
+// Definitions by: Daniel Cassidy <https://github.com/djcsdy>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+// TypeScript Version: 2.2
+
+export type CompareFn = (a: string, b: string) => number;
+
+export interface Options {
+    tabWidth?: number;
+    useTabs?: boolean;
+    expandUsers?: boolean;
+    keyOrder?: ReadonlyArray<string> | CompareFn;
+}
+
+export function format(json: object, options?: Options): string;
+
+export function check(json: string | object, options?: Options): boolean;

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

@@ -0,0 +1,69 @@
+import { format, check } from "prettier-package-json";
+
+const json = {
+    name: "some-package",
+    version: "0.0.0"
+};
+
+// $ExpectType string
+format(json);
+
+// $ExpectType string
+format(json, {});
+
+// $ExpectType string
+format(json, {
+    tabWidth: 2,
+    useTabs: false,
+    expandUsers: false,
+    keyOrder: ["name", "version"]
+});
+
+// $ExpectType string
+format(json, {
+    tabWidth: 4,
+    useTabs: true,
+    expandUsers: true,
+    keyOrder: (a, b) => {
+        // $ExpectType string
+        a;
+
+        // ExpectType string
+        b;
+
+        return b < a ? -1 : b > a ? 1 : 0;
+    }
+});
+
+// $ExpectType boolean
+check("");
+
+// $ExpectType boolean
+check(json);
+
+// $ExpectType boolean
+check("", {});
+
+// $ExpectType boolean
+check(json, {});
+
+// $ExpectType boolean
+check("", {
+    tabWidth: 8,
+    useTabs: true,
+    expandUsers: false,
+    keyOrder: ["private", "version"]
+});
+
+// $ExpectType boolean
+check(json, {
+    keyOrder: (a, b) => {
+        // $ExpectType string
+        a;
+
+        // $ExpectType string
+        b;
+
+        return b < a ? -1 : b > a ? 1 : 0;
+    }
+});

types/prettier-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",
+        "prettier-package-json-tests.ts"
+    ]
+}

types/prettier-package-json/tslint.json

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