gemini-gui/lib/utils.js at master · gemini-testing/gemini-gui

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'use strict';

const fs = require('fs');

const zlib = require('zlib');

const Promise = require('bluebird');

const tar = require('tar-fs');

exports.decompress = function(source, destination) {

return new Promise((resolve, reject) => {

fs.createReadStream(source)

.on('error', reject)

.pipe(zlib.createGunzip())

.on('error', reject)

.pipe(tar.extract(destination))

.on('error', reject)

.on('finish', resolve);

});

};

class ExtendableError extends Error {

constructor(message, cause) {

super();

this.message = message;

Error.captureStackTrace(this, this.constructor);

if (cause && cause.stack) {

this.stack = this.stack.concat('\n\nCaused by:\n' + cause.stack);

}

exports.ExtendableError = ExtendableError;