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exec-series
Advanced tools
Readme
A Node module to run commands in order
const execSeries = require('exec-series');
execSeries(['echo "foo"', 'echo "bar"'], (err, stdouts, stderrs) => {
if (err) {
throw err;
}
console.log(stdouts); // yields: ['foo\n', 'bar\n']
console.log(stderrs); // yields: ['', '']
});
On Linux, you can do almost the same thing with &&
operator like below:
const {exec} = require('child_process');
exec('echo "foo" && echo "bar"', (err, stdout, stderr) => {
//...
});
However, some environments, such as Windows PowerShell, don't support &&
operator. This module helps you to create a cross-platform Node program.
npm install exec-series
const execSeries = require('exec-series');
commands: Array
of String
(the commands to run)
options: Object
(child_process.exec options with maxBuffer
defaulting to 10 MB)
callback: Function
It sequentially runs the commands using child_process.exec. If the first command has finished successfully, the second command will run, and so on.
After the last command has finished, it runs the callback function.
When one of the commands fails, it immediately calls the callback function and the rest of the commands won't be run.
error: Error
if one of the commands fails, otherwise undefined
stdoutArray: Array
of String
(stdout of the commands)
stderrArray: Array
of String
(stderr of the commands)
execSeries([
'mkdir foo',
'echo bar',
'exit 200',
'mkdir baz'
], (err, stdouts, stderrs) => {
err.code; //=> 200
stdouts; //=> ['', 'bar\n', '']
stderrs; //=> ['', '', '']
fs.statSync('foo').isDirectory; //=> true
fs.statSync('baz'); // throw an error
});
Callback function is optional.
execSeries(['mkdir foo', 'mkdir bar']);
setTimeout(() => {
fs.statSync('foo').isDirectory(); //=> true
fs.statSync('bar').isDirectory(); //=> true
}, 1000);
Copyright (c) 2014 - 2016 Shinnosuke Watanabe
Licensed under the MIT License.
FAQs
Run commands in order
The npm package exec-series receives a total of 77,975 weekly downloads. As such, exec-series popularity was classified as popular.
We found that exec-series demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
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