1'use strict'; 2 3require('../common'); 4const assert = require('assert'); 5const { Readable } = require('stream'); 6 7 8{ 9 const readable = new Readable({ encoding: 'hex' }); 10 assert.strictEqual(readable._readableState.encoding, 'hex'); 11 12 readable.setEncoding(null); 13 14 assert.strictEqual(readable._readableState.encoding, 'utf8'); 15} 16