Bifurcate array based on values

OSCC · JavaScript, Array · Nov 1, 2020

Splits values into two groups, based on the result of the given filter array.

const bifurcate = (arr, filter) =>
  arr.reduce((acc, val, i) => (acc[filter[i] ? 0 : 1].push(val), acc), [
    [],
    [],
  ]);
bifurcate(['beep', 'boop', 'foo', 'bar'], [true, true, false, true]);
// [ ['beep', 'boop', 'bar'], ['foo'] ]

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