boom-express/src/index.ts

var boom = require('boom');

export class BoomExpress {

    Boom(outputTransformer) {
        return function (req, res, next) {
            if (res.boom) throw new Error('boom already exists on response object');

            res.boom = {};

            Object.keys(boom).forEach(function (key) {
                if (typeof boom[key] !== 'function') return;

                res.boom[key] = function () {
                    var boomed = boom[key].apply(this, arguments);

                    if (typeof outputTransformer === 'function') {
                        boomed = outputTransformer(boomed);
                    }

                    res.status(boomed.output.statusCode).send(boomed.output.payload);
                };
            });

            next();
        };
    }
}