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'use strict';
const common = require('../common');
var R = require('_stream_readable');
var W = require('_stream_writable');
var assert = require('assert');
var src = new R({encoding: 'base64'});
var dst = new W();
var hasRead = false;
var accum = [];
var timeout;
src._read = function(n) {
if (!hasRead) {
hasRead = true;
process.nextTick(function() {
src.push(Buffer.from('1'));
src.push(null);
});
}
};
dst._write = function(chunk, enc, cb) {
accum.push(chunk);
cb();
};
src.on('end', function() {
assert.equal(Buffer.concat(accum) + '', 'MQ==');
clearTimeout(timeout);
});
src.pipe(dst);
timeout = setTimeout(function() {
common.fail('timed out waiting for _write');
}, 100);