These methods were introduced in *the first* commit of PR 4938, however they became unused in *the second* commit of that PR.
Hence it seems that we've been accidentally shipping, a small amount of, unused code for over a decade.
While initializing the `padded` Uint8Arrays we're manually assigning zeros to some entries, which is completely unnecessary since that's the default value for a TypedArray, and instead we can just increment the index.