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fs.readdirSync() Method

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fs.readdirSync() Method

fs.readdirSync() Method sits in an upload job. Rohit’s job is read a big CSV. Write that first.

Keep fs.readdirSync() Method small. Rohit should finish read a big CSV in a few lines, not a 40-line dump.

Without fs.readdirSync() Method, an upload job gets messy and read a big CSV is hard to trust.

fs.readdirSync() Method shows up in an upload job. Name read a big CSV, not “a real-world scenario”.

fs.readdirSync() Method trap — loading the whole file into RAM. Rohit loses marks for that every viva.

fs.readdirSync() Method is not a lonely heading. Rohit ties it to read a big CSV.

Viva for fs.readdirSync() Method — what it is → createReadStream → the mistake (loading the whole file into RAM).

Exam tip

Say fs.readdirSync() Method in one breath, then createReadStream, then loading the whole file into RAM.

Example

const fs = require("fs");
const path = require("path");

const file = path.join(__dirname || ".", "demo.txt");
fs.writeFileSync(file, "hello node\n");
const text = fs.readFileSync(file, "utf8");
console.log(text.trim());
fs.unlinkSync(file);

fs.readdirSync() Method — fs reads/writes files. Prefer promises/async APIs in real apps.

Short notes

Deffs.readdirSync() Method — Rohit uses it for read a big CSV in an upload job.
Rulefs.readdirSync() Method → createReadStream.
Rememberfs.readdirSync() Method + the event loop (an upload job).
Usefs.readdirSync() Method in an upload job (read a big CSV).
Trapfs.readdirSync() Method — loading the whole file into RAM.
Exfs.readdirSync() Method → read a big CSV.

const fs = require("fs"); const path = require("path"); const file = path.join(__dirname || ".", "demo.txt"); fs.writeFileSync(file, "hello node\n"); const text = fs.readFileSync(file, "utf8"); console.log(text.trim()); fs.unlinkSync(file);

fs.readdirSync() Method

Example

Short notes

Questions

fs.readdirSync() Method

Example

Short notes

Questions