Configurable type definitions (#24008)

* Configurable type definitionsπ

* Updated tests

* Added tests for errorsπ

* Updated project link

* Changed definitions to the proposed structure

types/configurable/configurable-tests.ts

@@ -0,0 +1,50 @@
+import configurable = require('configurable');
+
+// Arrange
+class A {
+    something(): void {
+        // nothing
+    }
+}
+
+const obj = new A();
+const c = configurable(obj);
+
+// $ExpectType A & Configurable<A>
+c.set('first', 'first as a string');
+
+// $ExpectType any
+c.get('first');
+
+// $ExpectType A & Configurable<A>
+c.enable('first');
+
+// $ExpectType boolean
+c.enabled('first');
+
+// $ExpectType A & Configurable<A>
+c.disable('first');
+
+// $ExpectType boolean
+c.disabled('first');
+
+// $ExpectError
+c.set(5, 'first as a string');
+
+// $ExpectError
+c.set('first');
+
+// $ExpectError
+c.get(5);
+
+// $ExpectError
+c.enable(5);
+
+// $ExpectError
+c.enabled(5);
+
+// $ExpectError
+c.disable(5);
+
+// $ExpectError
+c.disabled(5);

types/configurable/index.d.ts

@@ -0,0 +1,27 @@
+// Type definitions for configurable 0.0
+// Project: https://www.npmjs.com/package/configurable
+// Definitions by: Vilim Stubičan <https://github.com/jewbre>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+// TypeScript Version: 2.4
+
+// Make any object configurable
+declare function configurable<T extends object>(obj: T): T & Configurable<T>;
+export = configurable;
+
+interface Configurable<T> {
+    settings: {
+        [key: string]: any;
+    };
+
+    set(name: string, val: any): T & Configurable<T>;
+
+    get(name: string): any;
+
+    enable(name: string): T & Configurable<T>;
+
+    disable(name: string): T & Configurable<T>;
+
+    enabled(name: string): boolean;
+
+    disabled(name: string): boolean;
+}

types/configurable/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",
+        "configurable-tests.ts"
+    ]
+}

types/configurable/tslint.json

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