@specialblend/unpromisify/dist/index.cjs.js

convert async functions into callback style functions

'use strict';

function _interopDefault (ex) { return (ex && (typeof ex === 'object') && 'default' in ex) ? ex['default'] : ex; }

var assert = _interopDefault(require('assert'));

function unpromisify(handler) {
    return (...args) => {
        assert(args.length, 'unpromisified handler needs at least 1 argument');
        const params = args;
        const callback = args.pop();
        assert(typeof callback === 'function', 'provided callback argument must be a function');
        handler(...params)
            .then(data => callback(null, data))
            .catch(callback);
    };
}

module.exports = unpromisify;