Just use Buffer#indexOf(). It has been available since Node.js 4.

Node.js Buffer#indexOf() ponyfill

$ npm install --save buf-indexof

var bufIndexof = require('buf-indexof');

bufIndexof(new Buffer('unicorn'), 'corn');
//=> 3

See the buffer.indexOf() docs.

The only difference is that you pass in the buffer as the first argument instead of calling the .indexOf() method on the buffer instance.

• buffer-equals - Node.js buffer.equals() ponyfill
• buf-compare - Node.js Buffer.compare() ponyfill

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