node-array-flatten 2.1.0-1 (amd64 binary) in ubuntu focal

 This node.js module flattens nested arrays
    flatten(array)
       Flatten a nested array structure
    flatten.from(arrayish)
       Flatten an array-like structure (E.g. arguments)
    flatten.depth(array, depth)
       Flatten a nested array structure with a specific depth
    flatten.fromDepth(arrayish, depth)
       Flatten an array-like structure with a specific depth
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 Node.js is an event-based server-side JavaScript engine.