How do you read a file in Node?
Model answer
Use the promise version of fs: import { readFile } from 'node:fs/promises'; const text = await readFile('data.txt', 'utf8'). Avoid readFileSync inside request handlers because it blocks the thread. For large files use streams.
Learn this topic
Async JavaScript in Node: Promises, async/await and the Event Loop in the course Node.js and Express: Build a Back End API from Scratch.
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