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buffer-indexof-polyfill

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buffer-indexof-polyfill

This is a polyfill for Buffer#indexOf introduced in NodeJS 4.0.

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What is buffer-indexof-polyfill?

The buffer-indexof-polyfill npm package provides a polyfill for the `indexOf` method on Buffer instances in Node.js. This is particularly useful for environments or versions of Node.js where `Buffer.indexOf` is not available. It allows developers to search for sequences within buffer objects, similar to how strings are searched in JavaScript.

What are buffer-indexof-polyfill's main functionalities?

Finding the index of a string within a buffer

This feature allows you to find the first occurrence of a string within a buffer. The code sample demonstrates searching for the string 'world' within a buffer containing 'hello world', which returns the index 6, indicating the start of the match.

var indexOf = require('buffer-indexof-polyfill');
var buf = Buffer.from('hello world');
var index = indexOf(buf, 'world');
console.log(index); // Outputs: 6

Finding the index of a buffer within another buffer

This feature enables searching for a sequence of bytes (represented by a buffer) within another buffer. The example shows how to find a buffer containing 'world' within another buffer, yielding the same result as searching for a string.

var indexOf = require('buffer-indexof-polyfill');
var buf = Buffer.from('hello world');
var search = Buffer.from('world');
var index = indexOf(buf, search);
console.log(index); // Outputs: 6

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Package last updated on 09 Sep 2020

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