Basic Algorithm Scripting: Chunky Monkey

solution.js

const chunkArrayInGroups = (arr, size) => (  
  arr.reduce(
    (acc, cv, index) => (
      !((index / size) % 1)
        ? [a, [cv]]
        : [
          ...acc.slice(0, acc.length - 1),
          [
            ...acc[acc.length - 1],
            cv
          ]
        ]
    ),
    []
  )
)

chunkArrayInGroups([0, 1, 2, 3, 4, 5], 2)

source.txt

https://learn.freecodecamp.org/javascript-algorithms-and-data-structures/basic-algorithm-scripting/chunky-monkey/?fbclid=IwAR2K2LzyI3yKkHioeuyDOPkN8LUa_IINvDLlQdAXcfkzi0-DQ27jKbYkwx8