Nodejs doesnt recognize async function and reference - node.js

Question

When i run my project in terminal like this
node index.js
I get a reference error: config not defined
/home/ether/Documents/nodesendeth/index.js:6
const {asset, base, spread, allocation} = config;
^
ReferenceError: config is not defined
at tick (/home/ether/Documents/nodesendeth/index.js:6:47)
at run (/home/ether/Documents/nodesendeth/index.js:49:3)
at Object.<anonymous> (/home/ether/Documents/nodesendeth/index.js:52:1)
at Module._compile (internal/modules/cjs/loader.js:1151:30)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:1171:10)
at Module.load (internal/modules/cjs/loader.js:1000:32)
at Function.Module._load (internal/modules/cjs/loader.js:899:14)
at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:71:12)
at internal/main/run_main_module.js:17:47
in my code i have assigned the config constant like this:
require('dotenv').config;
const ccxt = require('ccxt');
const axios = require('axios');
const tick = async => {
const {asset, base, spread, allocation} = config;
const market = `${asset}/${base}`;
const orders = binanceClient.fetchOpenOrders(market);
orders.forEach(async order => {
await binanceClient.cancelOrder(order.id);
});
const results = Promise.all([
axios.get('https://api.coingecko.com/api/v3/simple/price?ids=bitcoin&vs_currencies=usd'),
axios.get('https://api.coingecko.com/api/v3/simple/price?ids=tether&vs_currencies=usd')
]);
const marketPrice = results[0].data.bitcoin.usd / results[1].data.tether.usd;
const sellPrice = marketPrice * (1 + spread);
const buyPrice = marketPrice * (1 - spread);
const balances = binanceClient.fetchBalance();
const assetBalance = balances.free[asset];
const baseBalance = balances.free[base];
const sellVolume = assetBalance * allocation;
const buyVolume = (baseBalance * allocation) / marketPrice;
binanceClient.createLimitSellOrder(market, sellVolume, sellPrice);
binanceClient.createLimitBuyOrder(market, sellVolume, buyPrice);
console.log(`
New tick for ${market}...
Created limit sell order for ${sellVolume}#${sellPrice}
Create limit buy order for ${buyVolume}#${buyPrice}`)
}
const run = () => {
const config = {
asset: 'BTC',
base: 'USDT',
allocation: 0.1,
spread: 0.2,
tickInterval: 2000
};
const binanceClient = new ccxt.binance({
apiKey: process.env.API_ENV,
secret: process.env.API_SECRET,
});
tick(config, binanceClient);
setInterval(tick, config.tickInterval, config, binanceClient);
}
run()
I also got await errors saying that i need to run them in an sync function which I do.
i have removed the await keyword now but the app should run with the await kewyword because those functions are async.
Why am i getting those errors when i have a config variable aswell as an async function?
I assume that something with my async function doesnt work because it neither recognises the config constant nor the async/await calls

Answer 1

config is undefined in your code.
You likely meant to declare it on this line, as follows:
const config = require('dotenv').config();
...but this is only half of your problem because, furthermore, the object returned by .config() puts all the variables in a parsed property.
So for example, if your .env looked like this:
apple=red
ball=blue
...and you just logged config, you'd see this:
{ parsed: { apple: 'red', ball: 'blue' } }
Then you could write:
const {apple, ball} = require('dotenv').config().parsed;
console.log(apple, ball);
And this would write:
red blue
In your specific case, if you are expecting asset, base, spread, and allocation to be environment variables in your .env file, then you could potentially change the line to say:
const {asset, base, spread, allocation} = config.parsed;