A simple utility function to set the state of a custom block

setBlockState.ts

      const setBlockState = <K extends keyof BLOCKPROPS>(prop: K, newValue: BLOCKPROPS[K]) => (s: CMSState<customBlockData, extra_images, PublicSite_CustomPageData>): CMSState<customBlockData, extra_images, PublicSite_CustomPageData> => {
        if (!s.blocks.has(props.block_index)) return s
        let current_block = s.blocks.get(props.block_index) as any
        if (current_block.kind != 'BLOCK_NAME') return s
        current_block = ({
          ...current_block,
          value: {
            ...current_block.value,
            fst: {
              ...current_block.value.fst,
              [prop]: newValue
            },

          }
        })
        return ({ ...s, blocks: s.blocks.set(props.block_index, current_block) })
      }