map 26filter

1const files = [ 'foo.txt ', '.bar', '   ', 'baz.foo' ];
2const filePaths = files
3  .map(file => file.trim())
4  .filter(Boolean)
5  .map(fileName => `~/cool_app/${fileName}`);
6
7// filePaths = [ '~/cool_app/foo.txt', '~/cool_app/.bar', '~/cool_app/baz.foo']

1const files = [ 'foo.txt ', '.bar', '   ', 'baz.foo' ];
2const filePaths = files.reduce((acc, file) => {
3  const fileName = file.trim();
4  if(fileName) {
5    const filePath = `~/cool_app/${fileName}`;
6    acc.push(filePath);
7  }
8  return acc;
9}, []);
10
11// filePaths = [ '~/cool_app/foo.txt', '~/cool_app/.bar', '~/cool_app/baz.foo']