diff --git a/index.js b/index.js
index 5ec00a2..02c1f92 100644
--- a/index.js
+++ b/index.js
@@ -1,11 +1,14 @@
 import {errToJSON} from 'error-to-json'
 
 
+/**
+ * @param source
+ */
 export default async function*(source)
 {
-  let test = {};
+  let test = {}
 
-  const nesting = [test];
+  const nesting = [test]
 
   for await(const {data, type} of source)
     switch(type)
@@ -13,82 +16,82 @@ export default async function*(source)
       case 'test:enqueue':
       case 'test:dequeue':
       case 'test:watch:drained':
-        break;
+        break
 
       case 'test:start':
-        test = data;
-        nesting.push(test);
-        break;
+        test = data
+        nesting.push(test)
+        break
 
       case 'test:pass':
       {
-        const oldTest = Object.assign(nesting.pop(), data);
+        const oldTest = Object.assign(nesting.pop(), data)
 
         test = nesting.at(-1)
 
-        let {passed} = test;
-        if(!passed) test.passed = passed = [];
+        let {passed} = test
+        if(!passed) test.passed = passed = []
 
-        passed.push(oldTest);
-        break;
+        passed.push(oldTest)
+        break
       }
 
       case 'test:fail':
       {
-        const oldTest = Object.assign(nesting.pop(), data);
-        oldTest.details.error = errToJSON(oldTest.details.error);
+        const oldTest = Object.assign(nesting.pop(), data)
+        oldTest.details.error = errToJSON(oldTest.details.error)
 
         test = nesting.at(-1)
 
-        let {failed} = test;
-        if(!failed) test.failed = failed = [];
+        let {failed} = test
+        if(!failed) test.failed = failed = []
 
-        failed.push(oldTest);
-        break;
+        failed.push(oldTest)
+        break
       }
 
       case 'test:plan':
-        Object.assign(test, data);
-        break;
+        Object.assign(test, data)
+        break
 
       case 'test:diagnostic':
       {
-        let {diagnostics} = test;
-        if(!diagnostics) test.diagnostics = diagnostics = [];
+        let {diagnostics} = test
+        if(!diagnostics) test.diagnostics = diagnostics = []
 
-        diagnostics.push(data.message);
-        break;
+        diagnostics.push(data.message)
+        break
       }
 
       case 'test:stderr':
       {
-        let {messages} = test;
-        if(!messages) test.messages = messages = [];
+        let {messages} = test
+        if(!messages) test.messages = messages = []
 
-        messages.push(Object.assign({date: new Date, type: 'stderr'}, data));
+        messages.push(Object.assign({date: new Date, type: 'stderr'}, data))
 
-        break;
+        break
       }
 
       case 'test:stdout':
       {
-        let {messages} = test;
-        if(!messages) test.messages = messages = [];
+        let {messages} = test
+        if(!messages) test.messages = messages = []
 
-        messages.push(Object.assign({date: new Date, type: 'stdout'}, data));
+        messages.push(Object.assign({date: new Date, type: 'stdout'}, data))
 
-        break;
+        break
       }
 
       case 'test:coverage':
       {
-        Object.assign(test, data);
+        Object.assign(test, data)
 
-        yield JSON.stringify(test, null, 2);
-        break;
+        yield JSON.stringify(test, null, 2)
+        break
       }
 
       default:
-        throw new Error(`Unknown event type: ${type}`);
+        throw new Error(`Unknown event type: ${type}`)
     }
 }