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fs.unwatchFile() Method

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fs.unwatchFile() Method

Don’t start fs.unwatchFile() Method with jargon. Start with read a big CSV. That is the whole point.

fs.unwatchFile() Method on the board — createReadStream. Then say what read a big CSV looks like after.

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

Vikram ships fs.unwatchFile() Method in an upload job. That is the use case worth saying.

If read a big CSV breaks under fs.unwatchFile() Method, check loading the whole file into RAM first.

After fs.unwatchFile() Method, Vikram should still remember loading the whole file into RAM.

Close fs.unwatchFile() Method with: “If I skip it, read a big CSV goes wrong like this: loading the whole file into RAM.”

Exam tip

For fs.unwatchFile() Method: definition + an upload job + one failure.

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

Short notes

Deffs.unwatchFile() Method — Vikram uses it for read a big CSV in an upload job.
Rulefs.unwatchFile() Method → createReadStream.
Rememberfs.unwatchFile() Method + an Express route (an upload job).
Usefs.unwatchFile() Method in an upload job (read a big CSV).
Trapfs.unwatchFile() Method — loading the whole file into RAM.
Exfs.unwatchFile() 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.unwatchFile() Method

Example

Short notes

Questions

fs.unwatchFile() Method

Example

Short notes

Questions