const files = [ 'foo.txt ', '.bar', ' ', 'baz.foo' ];
const filePaths = files.reduce((acc, file) => {
const fileName = file.trim();
if(fileName) {
const filePath = `~/cool_app/${fileName}`;
acc.push(filePath);
}
return acc;
}, []);
// filePaths = [ '~/cool_app/foo.txt', '~/cool_app/.bar', '~/cool_app/baz.foo']