Stringify: Is it possible to overwrite the type of specific elements?

[Kirdock]

If I have the object:

{
  name: 'myName'
  freeText: 'this is my free text'
}

and strinfigy it (Yaml.stringify(myObj)), is it possible to overwrite the type of one property? So everything should be PLAIN except freeText, which should be BLOCK_FOLDED.

name: myName
freeText: >
    this is my free text

[eemeli]

Yes. You'll need to first construct a Document from your JS value, and then set the type of the appropriate node. This is how it looks like with yaml@next:

import { Document } from 'yaml'
const doc = new Document({ name: 'myName', freeText: 'this is my free text\n' })
doc.get('freeText', true).type = 'BLOCK_FOLDED'
doc.toString()

name: myName
freeText: >
  this is my free text