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How to buffer entire file in memory with Node.js?

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To buffer entire file in memory with Node.js, we call readFile.

For instance, we write

const fs = require("fs");

fs.readFile("/etc/passwd", (err, data) => {
  // ...
});

to call readFile to open the /etc/passwd file.

And we get the open file data from data.

By John Au-Yeung

Web developer specializing in React, Vue, and front end development.

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