my_console.js

'use strict';

const errorCodes = [
    {
        title: 'Typos',
        code: 1
    },
    {
        title: 'Repeat words',
        code: 2
    },
    {
        title: 'Capitalization',
        code: 3
    },
    {
        code: 100,
        title: 'Letter Ё (Yo)'
    }
];

function getTyposByCode(code, data) {
    let typos = [];
    let num = 1;

    data.forEach(function(el) {
        if (el.code !== code) {
            return;
        }

        const comment = [];
        const pos = el.position;

        if (el.count > 1) {
            comment.push('count: ' + el.count);
        }

        if (el.suggest) {
            comment.push('suggest: ' + el.suggest.join(', '));
        }

        if (pos.length) {
            comment.push(pos[0].line + ':' + pos[0].column);
        }

        typos.push(num + '. ' + el.word + (comment.length ? ' (' + comment.join(', ') + ')' : ''));
        num++;
    });

    return typos;
}

module.exports = {
    oneach(err, data) {
        const errors = [];
        if (err) {
            console.error(data);
        } else {
            if (data.data.some(el => el.code === 4)) {
                errors.push('Too many errors');
            }

            errorCodes.forEach(function(el) {
                const typos = getTyposByCode(el.code, data.data);
                if (typos.length) {
                    errors.push(el.title + ': ' +
                        typos.length + '\n' +
                        typos.join('\n') + '\n');
                }
            });

            const time = data.time ? ' ' + data.time + ' ms' : '';
            const separator = '-----\n';

            let res = data.resource;

            if (errors.length) {
                console.error('[ERR] ' + res + time + '\n' +
                    separator + errors.join('\n') + separator);
            } else {
                console.log('[OK] ' + res + time);
            }
        }
    },
    onend(data, stats) {
        if (stats.total) {
            if (!stats.errors) {
                console.log('No errors.');
            }
        }
    }
};