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'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) {
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);