Question

Technologies:

javascript

node.js

Tolerim

2 hours ago

My application is experiencing issues due to the conversion of Buffer to UInt8Array caused by changes in Electron browser versus isolated context.

Currently, I am enhancing an Electron application that now uses preload/isolated context instead of the browser chromium runtime. During this upgrade process, I'm encountering an unexpected issue with the Buffer.

The issue at hand involves an external JavaScript npm package, osc-min, which internally utilizes Buffer.isBuffer(...) in multiple areas to ensure valid argument input. However, when calling it from the Electron preload script, I'm noticing that my buffer creation code returns UInt8Arrays instead of the conventional 'Buffer' type.

In Chromium console, when I'm debugging the code, I can see that Buffer.isBuffer now fails on testing UInt8Array types.

Despite several approaches, all my attempts to provide a 'Buffer' type have been unsuccessful, as the isolated context library always debugs the UInt8Array type as invalid. Can you provide any suggestions for this scenario? Any help would be greatly appreciated. Thank you.

Answers(1)

Accepted Answer

It sounds like the transition to using preload/isolated context in your Electron app may have affected the type being returned by your code when creating buffers. Instead of returning a 'Buffer' type, you are getting a UInt8Array type, which is causing the Buffer.isBuffer() method to fail. One solution could be to convert the UInt8Array type to a Buffer type before passing it to the osc-min library. You can do this using the Buffer.from() method. For example:

const myBuffer = Buffer.from(myUInt8Array);

This will create a new buffer from the UInt8Array that you can then pass to the osc-min library. Alternatively, you may want to consider updating the osc-min library to accept UInt8Array types as input instead of only Buffer types, as it seems to be causing issues in the isolated context of your Electron app.