Speeding up breakpoints in launch.json

In the last few weeks, I have been getting a notification on my Visual Studio Code:

It's taking a while to configure your breakpoints. You can speed this up by updating the 'outFiles' in your launch.json.

I do not currently have an outFiles section in my launch.json. Should I consider adding this section, or could I get away with ignoring the notification?

This is my launch.json:

{
    "version": "0.2.0",
    "configurations": [
    {
        "type": "chrome",
        "request": "launch",
        "name": "Launch Chrome against localhost",
        "url": "http://localhost:8080/index.html",
        "webRoot": "${workspaceRoot}",
        "timeout": 10000,
        "sourceMaps": true,
        "trace": true,
    },
    ]
}