JAVASCRIPT object.js

import { inspectList, inspectProperty } from './helpers.js';
export default function inspectObject(object, options) {
    const properties = Object.getOwnPropertyNames(object);
    const symbols = Object.getOwnPropertySymbols ? Object.getOwnPropertySymbols(object) : [];
    if (properties.length === 0 && symbols.length === 0) {
        return '{}';
    }
    options.truncate -= 4;
    options.seen = options.seen || [];
    if (options.seen.includes(object)) {
        return '[Circular]';
    }
    options.seen.push(object);
    const propertyContents = inspectList(properties.map(key => [key, object[key]]), options, inspectProperty);
    const symbolContents = inspectList(symbols.map(key => [key, object[key]]), options, inspectProperty);
    options.seen.pop();
    let sep = '';
    if (propertyContents && symbolContents) {
        sep = ', ';
    }
    return `{ ${propertyContents}${sep}${symbolContents} }`;
}