@naturalcycles/nodejs-lib/dist/diff/tableDiff.js

Standard library for Node.js

import { _truncate } from '@naturalcycles/js-lib/string/string.util.js';
/**
 * Compares 2 objects, logs their differences via `console.table`.
 *
 * If `logEmpty` is set will explicitly log that fact, otherwise will log nothing.
 *
 * Function is located in nodejs-lib (not js-lib), because it's planned to improve in the future and add e.g colors (via chalk).
 */
export function tableDiff(a, b, opt = {}) {
    const { maxFieldLen, aTitle = 'a', bTitle = 'b' } = opt;
    const diff = {};
    if (a && b && a !== b) {
        new Set([...Object.keys(a), ...Object.keys(b)]).forEach(k => {
            if (a[k] !== b[k]) {
                diff[k] = {
                    [aTitle]: maxFieldLen && a[k] ? _truncate(String(a[k]), maxFieldLen) : a[k],
                    [bTitle]: maxFieldLen && b[k] ? _truncate(String(b[k]), maxFieldLen) : b[k],
                };
            }
        });
    }
    if (Object.keys(diff).length) {
        console.table(diff);
    }
    else if (opt.logEmpty) {
        console.log('no_difference');
    }
}