merge-module

    function
    boot.janet on line 2610, column 1

    (merge-module target source &opt prefix export)

    Merge a module source into the target environment with a prefix, as 
    with the import macro. This lets users emulate the behavior of 
    import with a custom module table. If export is truthy, then merged 
    functions are not marked as private. Returns the modified target 
    environment.