Description

Related to https://github.com/imgix/js-core#variable-qualities

Add a variable_qualities option to the https://github.com/imgix/imgix-go#fixed-width-images function to allow users to override the mapping of the quality parameter (q) to each device pixel ratio (dpr). This will allow users to have more granular control over the fixed-size srcset values generated.

Description

Related to https://github.com/imgix/js-core#fixed-image-rendering

Add a DevicePixelRatios option to the https://github.com/imgix/imgix-go#fixed-width-images function to allow users to customize the target device pixel ratio(s) (dpr) when generating a fixed image. This will allow users to have more granular control over the fixed-size srcset values generated.

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Question
isDprBased returns true only if parameters contain 'w' or ('h' and 'ar') while here and test assume requested srcset is dpr based when params just contain 'h' even if params do not contain 'ar'.

Which rule is right?
Besides, It seems that isDprBased is not used. Maybe is this function deprecated?

no issue, misread old code of mine ;)

The testify dependency was removed in 30f5cf5 and the assumptions in this file are now out of date 😢