ServerEvents.recipes(event => {

    // cheaper spyglass
    event.remove({output: 'minecraft:spyglass'});
    event.shaped(
        'minecraft:spyglass',
        [
            '  A',
            ' B ',
            'B  ',
        ],
        {
            A: 'minecraft:glass',
            B: 'minecraft:copper_ingot'
        }
    );

    // cheaper map
    event.remove({output: 'minecraft:map'});
    event.shaped(
        'minecraft:map',
        [
            'BBB',
            'BAB',
            'BBB'
        ],
        {
            A: 'minecraft:spyglass',
            B: 'minecraft:paper'
        }
    );

    // map atlas shapeless
    event.remove({output: 'map_atlases:atlas'});
    event.shapeless(
        'map_atlases:atlas',
        [
            'minecraft:map',
            'minecraft:book',
            'minecraft:compass'
        ]
    );
});