The formats the toolkit may claim. It must be truthful about avif: core's AVIF effect falls
back to webp only when told no, and a false yes logs a failed derivative instead.
Parameters
engine: "tinyimg"|"images"
Optionalfeatures: readonlystring[]
TinyImgModule.features from image-runtime.ts; the pre-1.1 set when omitted
The formats the toolkit may claim. It must be truthful about
avif: core's AVIF effect falls back to webp only when told no, and a false yes logs a failed derivative instead.