feat: add definition for looper (#43551)

types/looper/index.d.ts

@@ -0,0 +1,13 @@
+// Type definitions for looper 4.0
+// Project: https://github.com/dominictarr/looper
+// Definitions by: Rong Shen <https://github.com/jacobbubu>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+
+/**
+ * Loop with callbacks but don't RangeError.
+ */
+
+type Fn = () => any;
+declare function looper(fn: Fn): Fn;
+
+export = looper;

types/looper/looper-tests.ts

@@ -0,0 +1,8 @@
+import looper = require('looper');
+
+let l = 100000;
+const next = looper(() => {
+    if (--l) next();
+});
+
+next();

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

types/looper/tslint.json

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