27 lines
655 B
JavaScript
27 lines
655 B
JavaScript
'use strict';
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const zlib = require('zlib');
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const decompressTar = require('decompress-tar');
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const fileType = require('file-type');
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const isStream = require('is-stream');
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module.exports = () => input => {
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if (!Buffer.isBuffer(input) && !isStream(input)) {
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return Promise.reject(new TypeError(`Expected a Buffer or Stream, got ${typeof input}`));
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}
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if (Buffer.isBuffer(input) && (!fileType(input) || fileType(input).ext !== 'gz')) {
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return Promise.resolve([]);
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}
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const unzip = zlib.createGunzip();
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const result = decompressTar()(unzip);
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if (Buffer.isBuffer(input)) {
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unzip.end(input);
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} else {
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input.pipe(unzip);
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}
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return result;
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};
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