CODEWITHSUNDEEP
javascriptnode.jsjsonerror-handlingfs
secnyt
secnyt

Reputation: 13

Why is my fs error returning an empty object in Node.js?

I am currently trying to read a file using fs in Node v12.16.2. I currently have a function setup like so:

const fs = require('fs');
var JSONData;
const read = function(path){
    fs.readFile(path, 'utf8', (data, err) => {
        if(err){
            console.log(err);
            console.log('there was an error');
        }
        JSONData = data;
    })
}
read('./path/to/file.json');

In the console, I simply get

{}
there was an error

I also tried console.loging err.message, err.valueOf, and using throw err, none of which gave me any more data on the error. I'd appreciate if someone could help either discover my problem or knows it already.

Upvotes: 1

Views: 848

Answers (1)

laruiss
laruiss

Reputation: 3816

Callbacks in Node.js receive the error as the first argument:

const fs = require('fs');
var JSONData;
function read (path) {
    fs.readFile(path, 'utf8', (err, data) => { // <-- Look here
        if (err) {
            console.log(err);
            console.log('there was an error');
        }
        JSONData = data;
    })
}
read('./path/to/file.json');

Upvotes: 2

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