Merge pull request #147 from unexpectedjs/feature/nodejs-v18

Support node.js version 18

Author: gustavnikolaj

.github/workflows/ci.yml

@@ -5,7 +5,7 @@ name: Tests
 
 jobs:
   test:
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-20.04
     name: Node ${{ matrix.node }}
     strategy:
       matrix:
@@ -14,6 +14,7 @@ jobs:
           - '12'
           - '14'
           - '16'
+          - '18'
     steps:
       - uses: actions/checkout@v2
       - name: Setup node

lib/UnexpectedExpressMocker.js

@@ -144,6 +144,7 @@ class UnexpectedExpressMocker {
       },
       on() {},
       removeListener() {},
+      _readableState: true,
     });
 
     const requestBodyState = classifyRequestBodyAndUpdateHttpRequest(