37 lines
860 B
JavaScript
37 lines
860 B
JavaScript
'use strict';
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const PassThrough = require('stream').PassThrough;
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const zlib = require('zlib');
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module.exports = res => {
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// TODO: use Array#includes when targeting Node.js 6
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if (['gzip', 'deflate'].indexOf(res.headers['content-encoding']) === -1) {
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return res;
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}
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const unzip = zlib.createUnzip();
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const stream = new PassThrough();
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stream.httpVersion = res.httpVersion;
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stream.headers = res.headers;
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stream.rawHeaders = res.rawHeaders;
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stream.trailers = res.trailers;
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stream.rawTrailers = res.rawTrailers;
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stream.setTimeout = res.setTimeout.bind(res);
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stream.statusCode = res.statusCode;
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stream.statusMessage = res.statusMessage;
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stream.socket = res.socket;
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unzip.on('error', err => {
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if (err.code === 'Z_BUF_ERROR') {
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stream.end();
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return;
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}
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stream.emit('error', err);
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});
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res.pipe(unzip).pipe(stream);
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return stream;
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};
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