ember-feature-flags: Add types (#22585)

types/ember-feature-flags/ember-feature-flags-tests.ts

@@ -0,0 +1,14 @@
+import Features from 'ember-feature-flags';
+import 'ember-feature-flags/tests/helpers/with-feature';
+
+// https://www.npmjs.com/package/ember-feature-flags#withfeature
+declare var features: Features;
+features.isEnabled('new-billing-plans'); // $ExpectType boolean
+features.enable('newHomepage'); // $ExpectType void
+features.disable('newHomepage'); // $ExpectType void
+const setup = {
+  "new-billing-plans": true,
+  "new-homepage": false
+};
+features.setup(setup); // $ExpectType void
+withFeature('new-homepage'); // $ExpectType void

types/ember-feature-flags/index.d.ts

@@ -0,0 +1,15 @@
+// Type definitions for ember-feature-flags 3.0
+// Project: https://github.com/kategengler/ember-feature-flags#readme
+// Definitions by: Frank Tan <https://github.com/tansongyang>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+// TypeScript Version: 2.4
+
+import Ember from 'ember';
+
+// https://github.com/kategengler/ember-feature-flags/blob/v3.0.0/addon/services/features.js#L5
+export default class Features extends Ember.Service {
+    setup(features: { [key: string]: boolean }): void;
+    enable(feature: string): void;
+    disable(feature: string): void;
+    isEnabled(feature: string): boolean;
+}

types/ember-feature-flags/tests/helpers/with-feature.d.ts

@@ -0,0 +1,3 @@
+// https://www.npmjs.com/package/ember-feature-flags#withfeature
+// https://github.com/kategengler/ember-feature-flags/blob/v3.0.0/test-support/helpers/with-feature.js#L3
+declare function withFeature(name: string): void;

types/ember-feature-flags/tsconfig.json

@@ -0,0 +1,25 @@
+{
+    "compilerOptions": {
+        "module": "commonjs",
+        "lib": [
+            "es6",
+            "dom"
+        ],
+        "noImplicitAny": true,
+        "noImplicitThis": true,
+        "strictNullChecks": true,
+        "strictFunctionTypes": false,
+        "baseUrl": "../",
+        "typeRoots": [
+            "../"
+        ],
+        "types": [],
+        "noEmit": true,
+        "forceConsistentCasingInFileNames": true
+    },
+    "files": [
+        "index.d.ts",
+        "tests/helpers/with-feature.d.ts",
+        "ember-feature-flags-tests.ts"
+    ]
+}

types/ember-feature-flags/tslint.json

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