How to `--fix` through stdin without getting errors?

[gerardabello]

I want to format a string of code that might contain non-fixable errors. If I want the formatted output through stdin I get both the code and the non-fixable errors, so it is difficult to extract the formatted code from there.

Is there any way to ignore non-fixable errors when using --fix through stdin?

Thanks

[bcomnes]

Editor plugins do this by dealing with errors when try spawn a process to try and perform the fix.

[feross]

@gerardabello The "fixed" code goes to stdout, while the error messages go to stderr, so you can filter out just what you need.

Concrete example:

echo 'var x = 4;' | standard --stdin --fix > out.txt

Now "out.txt" contains the fixed file. The unfixable errors still get printed to stderr and appear in the terminal.