child_process/promises

[axkibe]

What is the problem this feature will solve?

There isn't child_process doesn't have /promises API as part of the core.

What is the feature you are proposing to solve the problem?

I'd want to see a child_process/promises part of the core API.. since let's admit, promises are the future since async/await became JS standard a while ago.

I know there is util.promisify as workaround and I know it's very possible to write ones own wrapper like for example below.

But a consistent and comprehensive promises API really should be core.

promises.exec = ( command, options ) =>
    new Promise( ( resolve, reject ) =>
    {
        child.exec( command, options, ( error, stdout, stderr ) =>
        {
            stdout += ''; stderr += '';
            if( options && options.echo )
            {
                console.log( stdout );
                console.log( stderr );
            }
            if( error ) reject( { error: error, out : stdout, err : stderr } );
            else resolve( { out : stdout, err : stderr } );
        } );
    } );

What alternatives have you considered?

util.promisify
own wrappers

Yes it can be worked around. But it isn't nice/comfortable.

[targos]

Duplicate of #38823