salix/modules/item/back/methods/item-barcode/toItem.js

module.exports = Self => {
    Self.remoteMethod('toItem', {
        description: 'Returns last entries',
        accessType: 'READ',
        accepts: [{
            arg: 'barcode',
            type: 'string',
            required: true,
            description: 'barcode'
        }],
        returns: {
            type: 'number',
            root: true
        },
        http: {
            path: `/:barcode/toItem`,
            verb: 'GET'
        }
    });

    Self.toItem = async (barcode, options) => {
        const myOptions = {};

        if (typeof options == 'object')
            Object.assign(myOptions, options);

        const query = `SELECT vn.barcodeToItem(?)`;
        let [item] = await Self.rawSql(query, [barcode], myOptions);

        if (item)
            item = Object.values(item)[0];

        return item;
    };
};