refactor: move stream-muxer

new-src/stream-muxer/index.js

@@ -0,0 +1,19 @@
+/* eslint-env mocha */
+'use strict'
+
+const baseTest = require('./base-test')
+const stressTest = require('./stress-test')
+const megaStressTest = require('./mega-stress-test')
+const isNode = require('detect-node')
+
+module.exports = (common) => {
+  describe('interface-stream-muxer', () => {
+    baseTest(common)
+    if (isNode) {
+      const closeTest = require('./close-test')
+      closeTest(common)
+    }
+    stressTest(common)
+    megaStressTest(common)
+  })
+}