javascript collection processing methods

JavaScript
array.every(elm,index,array) // Did all elements satisfy the callback?
array.find(elm,index,array) // Find the first element that satisfies the callback
array.findIndex(elm,index,array) // Find the first element that satisfies the callback's index
array.map(elm,index,array) // Transform every element and create a new array
array.reduce(accumulator,elm,index,array) // Reduce every element into a new value
array.some(elm,index,array) // Did any element satisfy the callback? 
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