CODEWITHSUNDEEP
node.js
Dan Monero
Dan Monero

Reputation: 437

How to read file without require('fs') - NodeJS

I've got a challenge to read a txt file that located in the same directory as my app.js.

In the challenge I can't use require so I can't import fs.readFileSync to my app.

Looking for other ways to console.log the txt content. Any ideas?

Upvotes: 3

Views: 8558

Answers (1)

Marcos Casagrande
Marcos Casagrande

Reputation: 40444

Without using require explicitly, you can use: module.constructor._load or process.mainModule.constructor._load

const fs = module.constructor._load('fs');
console.log(fs.readFileSync('./test.txt'));

Note that process.mainModule will be undefined if there is no entry script. (Not your case)

Of course this shouldn't be used in production code, since it's an undocumented API and may change. But will do for your challenge.

forgot to mention that I have to run it as node app.js

Otherwise you could use ES6 modules too, but that requires an additional flag: node --experimental-modules app.js

Upvotes: 3

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