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execPromise.js

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var cp = require('child_process');

// We have to manually promisify this because at this is required in lifecycle

// methods and we are not guaranteed that any 3rd party packages are installed

// at this point

module.exports = function(command, opts, extraOpts = {}) {

return new Promise(function(resolve, reject) {

const childProcess = cp.exec(command, opts, function(err, result) {

if (err) {

reject(err);

}

else {

resolve(result);

}

});

if (extraOpts.pipeOutput) {

childProcess.stdout.pipe(process.stdout);

childProcess.stderr.pipe(process.stderr);

}

return childProcess;

});

};