How to dump empty key value to yaml?

[wclr]

Need to get from js:

volumes:
  data-volume:

not

volumes:
  data-volume: null

not

volumes:
  data-volume: ''

?

[puzrin]

empty value === null in yaml.

No way to define such dumping style. Other styles can be tweaked via options https://github.com/nodeca/js-yaml#safedump-object---options-

[wclr]

Ok, null works for me, thanks) Why not allow this with undefined by default?

[puzrin]

There are no such thing as undefined in yaml. This package implements spec, not just generating pretty texts :)

[wclr]

@puzrin isn't there a way just to ignore undefined fields while dumping?

[puzrin]

Right now - no. Dumper expects you to provide correct (dumpable) source.

There is reasonable suggestion #339, but it's not implemented.

[wclr]

Ok, currently I worked it around by using JSON.parse(JSON.stringify(obj)) which removes undefined.

[RachitGod]

Ok, null works for me, thanks) Why not allow this with undefined by default?

Hi,
So, How did you fix it? When i use null i get output like
key1: null

[patarapolw]

Ok, currently I worked it around by using JSON.parse(JSON.stringify(obj)) which removes undefined.

It is safer to remove undefined using https://stackoverflow.com/questions/286141/remove-blank-attributes-from-an-object-in-javascript/57625661#57625661

matter.stringify(
          content,
          Object.entries(
            programmaticallyGeneratedData,
          ).reduce((a, [k, v]) => (v === undefined ? a : { ...a, [k]: v }), {}),
        )

However, if you need to remove deep undefined, you might need https://github.com/patarapolw/deepfind#patarapolwdeepfind then delete obj[k].