Map & Filter Callbacks

[Jyyjy]

Currently you can only set one map callback and one filter callback in packageLogs.js. This is an issue because when writing custom scripts in conent.js, the filter callback is set in injectScript(). So currently a user cannot set their own filter function.

Even if the intention is to restrict content.js to a single filter callback, the one being set in injectScript() doesn't actually filter. The filter callback being set just sends the log to the background script.

Furthermore, there is not a huge difference between the map and filter callbacks. So as a solution to the filter problem above, I am working on having a single function to add callbacks to the various package log functions, which can be called multiple times.

so instead of this:
filter(foo)
map(bar)

we can do this:
addCallback(foo)
addCallback(bar)
addCallback([baz, qux])

[poorejc]

I love this. This has actually been a bit of a pain point for me, I like the elegant solution! I can't wait to see an example! Thanks for digging in!