In the meantime, if you really want to, you can get the LineChart.js source here as well as its dependencies: interpolate.js and shared.js (make sure to import them correctly in LineChart.js).
Then simply add .style("stroke-width", n) after line 247, where n is the desired width of the line. You can also change this for the markers in line 302.
Please note that modifying a library like this can lead to bugs and unexpected behaviour, so I don't recommend doing this for any serious project.
I would also love for this to be implemented!
In the meantime, if you really want to, you can get the LineChart.js source here as well as its dependencies: interpolate.js and shared.js (make sure to import them correctly in LineChart.js).
Then simply add
.style("stroke-width", n)after line 247, where n is the desired width of the line. You can also change this for the markers in line 302.Please note that modifying a library like this can lead to bugs and unexpected behaviour, so I don't recommend doing this for any serious project.