express-validator, validationErrors is an empty object

Question

I want to check if a string is an email. This is the code.

req.checkBody('email', 'Invalid email address').isEmail();
var validationErrors = req.validationErrors();

if(validationErrors) {
    console.log(`Validation errors ${validationErrors}`);
}

console output:

Validation errors [object Object]

Answer 1

You are using Template Literals feature of ES6. It can embed variables in string like you did. But it doesn't parse object and array. Use traditional console.log:

console.log('Validation errors ', validationErrors);

PS: Use console.error to log errors, instead of console.log.