Add tslint (#151)

packages/util/src/assert.ts

@@ -8,18 +8,18 @@ import isFunction from './is/function';
 type MessageFn = () => string;
 
 /**
-  @name assert
-  @signature assert (test: any, message: string | () => string, code: number = ExtError.CODES.ASSERT, data: any): void
-  @summary Checks for a valid test, if not ExtError is thrown.
-  @description
-    Checks that `test` is a truthy value. If value is falsy (`null`, `undefined`, `false`, ...), it throws an ExtError with the supplied `message` and an optional `code` and `data`. When `test` passes, `true` is returned.
-  @example
-    const assert from '@polkadot/util/assert');
-
-    assert(true, 'True should be true'); // true returned
-    assert(false, 'False should not be true'); // ExtError thrown
-    assert(false, () => 'message'); // ExtError with 'message'
-*/
+ * @name assert
+ * @signature assert (test: any, message: string | () => string, code: number = ExtError.CODES.ASSERT, data: any): void
+ * @summary Checks for a valid test, if not ExtError is thrown.
+ * @description
+ * Checks that `test` is a truthy value. If value is falsy (`null`, `undefined`, `false`, ...), it throws an ExtError with the supplied `message` and an optional `code` and `data`. When `test` passes, `true` is returned.
+ * @example
+ *   const assert from '@polkadot/util/assert');
+ *
+ *   assert(true, 'True should be true'); // true returned
+ *   assert(false, 'False should not be true'); // ExtError thrown
+ *   assert(false, () => 'message'); // ExtError with 'message'
+ */
 export default function assert (test: any, message: string | MessageFn, code: number = ExtError.CODES.ASSERT, data?: any): boolean {
   if (test) {
     return true;