This chart animates the value (in $M) of the top global brands from 2000 to 2019. Color indicates sector. See the explainer for more. Data: Interbrand

At first glance, Observable appears to be vanilla JavaScript. This is intentional: by building on the native language of the web, Observable is more familiar and you can use the libraries you know and love, such as D3, Three, and TensorFlow. Yet for dataflow, Observable needed to change JavaScript in a few ways. Here’s a quick overview of what’s different. (We’ve also shared our grammar and parser.) Cells are separate scripts. Each cell in a notebook is a separate script that runs independently. A syntax er

When the application is launched, the following problems occur.
Screenshot of app.whenReady function error.
app.whenReady().then(createWindow)

Screenshot of app.on('ready') function error.
app.on(...