'use strict';
const common = require('../common');const stream = require('stream');const assert = require('assert');
const transform = new stream.Transform({ transform: _transform, highWaterMark: 1});
function _transform(chunk, encoding, cb) { process.nextTick(() => { assert.strictEqual(transform._writableState.needDrain, true); cb(); });}
assert.strictEqual(transform._writableState.needDrain, false);
transform.write('asdasd', common.mustCall(() => { assert.strictEqual(transform._writableState.needDrain, false);}));
assert.strictEqual(transform._writableState.needDrain, true);