Fix for certain child modules not getting cleared (#20)

fixture-empty.js

@@ -0,0 +1,3 @@
+'use strict';
+
+module.exports = {};

fixture-with-dependency.js

@@ -1,5 +1,7 @@
 'use strict';
 
+// eslint-disable-next-line no-unused-vars
+const _ = require('./fixture-empty');
 const fixture = require('./fixture');
 
 module.exports = () => fixture();

index.js

@@ -33,12 +33,12 @@ const clear = moduleId => {
 
 	// Remove all descendants from cache as well
 	if (require.cache[filePath]) {
-		const {children} = require.cache[filePath];
+		const children = require.cache[filePath].children.map(child => child.id);
 
 		// Delete module from cache
 		delete require.cache[filePath];
 
-		for (const {id} of children) {
+		for (const id of children) {
 			clear(id);
 		}
 	}

test.js

@@ -36,6 +36,16 @@ test('clearModule() recursively', t => {
 	t.is(require(id)(), 1);
 });
 
+test('clearModule() recursively, multiple imports', t => {
+	clearModule.all();
+	const id = './fixture-with-dependency';
+	t.is(require(id)(), 1);
+	t.is(require(id)(), 2);
+	t.is(require(id)(), 3);
+	clearModule(id);
+	t.is(require(id)(), 1);
+});
+
 test('clearModule.single()', t => {
 	clearModule.all();
 	const id = './fixture-with-dependency';