Switch fs.promises.access for existsSync

[codewithkyle]

https://github.com/Pageworks/papertrain/blob/fdb2ff759b57e04233366a47c9826fdb6cf35251/build-tools/prep.config.js#L28

Using the access method is failing on production.

TypeError: Cannot read property 'access' of undefined

Switch to use existsSync

if (fs.existsSync('_compiled'))
{
    rimraf('_compiled', (error)=>{
        if (error)
        {
            reject(error);
        }

        resolve();
    });
}
else
{
    resolve();
}

[codewithkyle]

It's possible that the error had something to do with the fact that fs.promises was experimental in node v10.0.0 and it might work if we use node v12.10.0

[codewithkyle]

Use the code above as the working fix. During the next project launch we'll test using node v12.10.0 to see if fs.promises is working.

[codewithkyle]

Updating node to v12.10.0 didn't fix the issue, it appears that it's not failing because the fs.promises section of the API was experimental in v10. We should implement the solution provided in the OP.

[codewithkyle]

Released in Papertrain v0.3.1 (#211)