Fix platformio build, add pre-build hook to build the web app

platformio.ini

@@ -8,7 +8,16 @@
 ; Please visit documentation for the other options and examples
 ; https://docs.platformio.org/page/projectconf.html
 
-[env:EspDmxNode]
+[platformio]
+default_envs = esp8266-nodemcuv2
+
+[common]
+lib_deps = 
+	me-no-dev/ESP Async WebServer@^1.2.3
+	bblanchon/ArduinoJson@^6.18.5
+	marvinroger/AsyncMqttClient@^0.9.0
+
+[env:esp8266-nodemcuv2]
 platform = [email protected]
 framework = arduino
 board = nodemcuv2
@@ -17,7 +26,7 @@ build_flags = -D PIO_FRAMEWORK_ARDUINO_MMU_CACHE16_IRAM48_SECHEAP_SHARED
 monitor_speed = 115200
 upload_speed = 115200
 lib_deps = 
+	${common.lib_deps}
 	me-no-dev/ESPAsyncTCP@^1.2.2
-	me-no-dev/ESP Async WebServer@^1.2.3
-	bblanchon/ArduinoJson@^6.18.5
-	marvinroger/AsyncMqttClient@^0.9.0
+	Makuna/[email protected]	; ^2.6.5 breaks compatibility
+extra_scripts = pre:src/build_web_app.py

src/build_web_app.py

@@ -0,0 +1,6 @@
+Import("env")
+
+def build_web_app(source, target, env):
+    env.Execute("cd src/web_app && npm run build")
+
+env.AddPreAction("${BUILD_DIR}/src/EspDmxNode.cpp.o", build_web_app)