Function contains

Returns true if all value in needles is contained in haystack, by default using === semantics.

const a = ['apples','oranges','pears','mandarins'];
const b = ['pears', 'apples'];
contains(a, b); // True

const c = ['pears', 'bananas'];
contains(a, b); // False ('bananas' does not exist in a)
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If needles is empty, contains will return true.

Compare by value using ixfx's isEqualValueDefault, or a custom function of your own

contains(a, b, isEqualValueDefault);
contains(a, b, (valueA, valueV) => {
 return valueA.name === valueB.name
})
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