balena-cli/lib/utils/streams.ts
Paulo Castro a883948d56 Bump resin-multibuild (2.1.4), docker-progress (3.0.5), resin-lint (3.0.1)
The new resin-multibuild and docker-progress versions widen the range
of errors caught by the 'balena push' and 'balena build' commands.

Change-type: patch
Signed-off-by: Paulo Castro <paulo@balena.io>
2019-03-18 14:09:06 +00:00

40 lines
1.1 KiB
TypeScript

/**
* @license
* Copyright 2019 Balena Ltd.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import Promise = require('bluebird');
import fs = require('fs');
export function buffer(
stream: NodeJS.ReadableStream,
bufferFile: string,
): Promise<NodeJS.ReadableStream> {
const fileWriteStream = fs.createWriteStream(bufferFile);
return new Promise(function(resolve, reject) {
stream
.on('error', reject)
.on('end', resolve)
.pipe(fileWriteStream);
}).then(
() =>
new Promise(function(resolve, reject) {
const fstream = fs.createReadStream(bufferFile);
fstream.on('open', () => resolve(fstream)).on('error', reject);
}),
);
}