reduce(callbackfn:(Dynamic, Int, Int, Uint8ClampedArray) ‑> Dynamic, initialValue:Dynamic):Dynamicreduce(callbackfn:(Int, Int, Int, Uint8ClampedArray) ‑> Int):IntreduceRight(callbackfn:(Dynamic, Int, Int, Uint8ClampedArray) ‑> Dynamic, initialValue:Dynamic):DynamicreduceRight(callbackfn:(Int, Int, Int, Uint8ClampedArray) ‑> Int):Int