Async scrape then deserialize JSON

async_scrape.js

const fs = require('fs');
const process = require('process');
const spawn = require("child_process").spawn;

process.chdir('./dir/of/spider');

async function test() {
    try {
        await scrape();
        desrialize();
    } catch (error) {
        console.log(error);
    }
}

test();

function desrialize() {
    fs.readFile('./output.file', 'utf-8', (err, data) => {
        if (err) {
            throw err;
        } else {
            JSON.parse(data).forEach(e => {
                console.log(e);
            });
        }
    });
}

function scrape() {
    return new Promise((resolve, reject) => {
        let tool = spawn('scrapy', [
            'crawl', 'async',
            '-o', 'out.json'
        ]);
        tool.on('exit', code => {
            if (code == 0) {
                resolve();
            } else {
                reject();
            }
        });
    }
    )
}