Refactor TypeScript definition to CommonJS compatible export (#20)

index.d.ts

@@ -1,15 +1,54 @@
-/**
- * Make a function mimic another one. It will copy over the properties `name`, `length`, `displayName`, and any custom properties you may have set.
- *
- * @param to - Mimicking function.
- * @param from - Function to mimic.
- * @returns The modified `to` function.
- */
-export default function mimicFn<
-	ArgumentsType extends unknown[],
-	ReturnType,
-	FunctionType extends (...arguments: ArgumentsType) => ReturnType
->(
-	to: (...arguments: ArgumentsType) => ReturnType,
-	from: FunctionType
-): FunctionType;
+declare const mimicFn: {
+	/**
+	Make a function mimic another one. It will copy over the properties `name`, `length`, `displayName`, and any custom properties you may have set.
+
+	@param to - Mimicking function.
+	@param from - Function to mimic.
+	@returns The modified `to` function.
+
+	@example
+	```
+	import mimicFn = require('mimic-fn');
+
+	function foo() {}
+	foo.unicorn = '🦄';
+
+	function wrapper() {
+		return foo();
+	}
+
+	console.log(wrapper.name);
+	//=> 'wrapper'
+
+	mimicFn(wrapper, foo);
+
+	console.log(wrapper.name);
+	//=> 'foo'
+
+	console.log(wrapper.unicorn);
+	//=> '🦄'
+	```
+	*/
+	<
+		ArgumentsType extends unknown[],
+		ReturnType,
+		FunctionType extends (...arguments: ArgumentsType) => ReturnType
+	>(
+		to: (...arguments: ArgumentsType) => ReturnType,
+		from: FunctionType
+	): FunctionType;
+
+	// TODO: Remove this for the next major release, refactor the whole definition to:
+	// declare function mimicFn<
+	//	ArgumentsType extends unknown[],
+	//	ReturnType,
+	//	FunctionType extends (...arguments: ArgumentsType) => ReturnType
+	// >(
+	//	to: (...arguments: ArgumentsType) => ReturnType,
+	//	from: FunctionType
+	// ): FunctionType;
+	// export = mimicFn;
+	default: typeof mimicFn;
+};
+
+export = mimicFn;

index.js

@@ -9,4 +9,5 @@ const mimicFn = (to, from) => {
 };
 
 module.exports = mimicFn;
+// TODO: Remove this for the next major release
 module.exports.default = mimicFn;

index.test-d.ts

@@ -1,5 +1,5 @@
-import {expectType} from 'tsd-check';
-import mimicFn from '.';
+import {expectType} from 'tsd';
+import mimicFn = require('.');
 
 function foo(string: string) {
 	return false;

package.json

@@ -13,7 +13,7 @@
 		"node": ">=6"
 	},
 	"scripts": {
-		"test": "xo && ava && tsd-check"
+		"test": "xo && ava && tsd"
 	},
 	"files": [
 		"index.js",
@@ -35,8 +35,8 @@
 		"change"
 	],
 	"devDependencies": {
-		"ava": "^1.3.1",
-		"tsd-check": "^0.3.0",
+		"ava": "^1.4.1",
+		"tsd": "^0.7.1",
 		"xo": "^0.24.0"
 	}
 }