add some basic CI checks

Author: rmorshea

.github/workflows/checks.yml

@@ -0,0 +1,23 @@
+name: test
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  check:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-node@v2
+        with:
+          node-version: 14
+      - uses: actions/setup-python@v2
+        with:
+          python-version: "3.x"
+      - run: pip install noxopt
+      - run: nox -t check

.gitignore

@@ -132,6 +132,7 @@ celerybeat.pid
 .venv
 env/
 venv/
+venv
 ENV/
 env.bak/
 venv.bak/

notebooks/introduction.ipynb

@@ -206,7 +206,6 @@
     "\n",
     "    @use_effect\n",
     "    def register_observer():\n",
-    "\n",
     "        def handle_change(change):\n",
     "            set_value(change[\"new\"])\n",
     "\n",

noxfile.py

@@ -0,0 +1,22 @@
+from noxopt import NoxOpt, Session
+
+group = NoxOpt(auto_tag=True)
+
+
+@group.session
+def check_python(session: Session) -> None:
+    session.install(
+        "black[jupyter]",
+        "flake8-pyproject",
+        "flake8",
+        "isort",
+    )
+    session.run("flake8", "reactpy_jupyter", "setup.py", "noxfile.py")
+    session.run("black", "--check", ".")
+    session.run("isort", "--check-only", ".")
+
+
+@group.session(python=False)
+def check_javascript(session: Session) -> None:
+    session.run("npm", "ci", external=True)
+    session.run("npm", "run", "lint", external=True)