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Running Dart (non-Flutter) Web apps

To run Dart web apps that do not use Flutter, you need to create a launch configuration in .vscode/launch.json that sets the "program" field to "web" so that the debugger knows to run using webdev serve:

"configurations": [
		"name": "Dart Web",
		"request": "launch",
		"type": "dart",
		// Run the web app in the "web" folder via "webdev"
		"program": "web"

This is not necessary for Flutter apps being run on Web devices, they will run automatically in the browser when you select a web device.