Change `.jpeg` extension use by `tile().toFile('output.dz')` to `.jpg`

Is there a way to have sharp use the .jpg file extension for tile output? By default the tiling methods seem to only output to the .jpeg extension. I couldn’t find any API methods for doing so and would prefer not to have to do a post-processing move on all those tiles (I’m setting up a script to batch-convert a large folder of images into tiles) just to get the desired file extension.

[gasi]

@lovell I like your proposal. This technically would be a breaking change if someone relied on the output defaulting to .jpeg. Are we ok with that given that sharp is pre-1.0?

Last night, I ended up implementing the renaming logic since I could do it on the fly when uploading to S3 without traversing the entire file system.

Whenever I go back to clean up this code, I will try and submit a PR for this 👍

[dehuszar]

I was able to get by using the file-system. I’ll take a look at the linked code. If I am able to whip up a PR I will.

Thanks!