An optimized version of tickprocessor from the node source code: https://github.com/nodejs/node/blob/main/deps/v8/tools/

This is also directly compatible with nodejs & doesn't require d8.

## Usage:

```
$ node --max-old-space-size=16000 tickprocessor-driver.mjs --preprocess -j v8-etc.log > output.txt
```

This output can then be loaded in to [speedscope.app](https://www.speedscope.app/)