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						- var Stream = require('stream');
 - if (process.env.READABLE_STREAM === 'disable' && Stream) {
 -   module.exports = Stream;
 -   exports = module.exports = Stream.Readable;
 -   exports.Readable = Stream.Readable;
 -   exports.Writable = Stream.Writable;
 -   exports.Duplex = Stream.Duplex;
 -   exports.Transform = Stream.Transform;
 -   exports.PassThrough = Stream.PassThrough;
 -   exports.Stream = Stream;
 - } else {
 -   exports = module.exports = require('./lib/_stream_readable.js');
 -   exports.Stream = Stream || exports;
 -   exports.Readable = exports;
 -   exports.Writable = require('./lib/_stream_writable.js');
 -   exports.Duplex = require('./lib/_stream_duplex.js');
 -   exports.Transform = require('./lib/_stream_transform.js');
 -   exports.PassThrough = require('./lib/_stream_passthrough.js');
 - }
 
 
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