writer: provide option where null values are just empty. #570

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1. puzrin commented on Jul 23, 2020

   

   puzrin

   on Jul 23, 2020

   Last edited by puzrin

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   https://github.com/nodeca/js-yaml#safedump-object---options-

   There are styles to select dumping formats when possible. IMO you can create schema with customize null type, if existing not enough
2. puzrin

   closed this as completedon Jul 23, 2020
3. puzrin

   reopened this on Jul 23, 2020
4. Giszmo commented on Jul 23, 2020

   

   Giszmo

   on Jul 23, 2020

   Last edited by Giszmo

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   I think I could help myself but it looks hacky:

   const schema = yaml.DEFAULT_SAFE_SCHEMA
   schema.compiledTypeMap.scalar['tag:yaml.org,2002:null'].represent.lowercase = function() { return '' }
   file.write(`---
   ${yaml.safeDump(header, {
     schema: schema
   })}
   ...
   

   👍React with 👍1Reacted by Andrew Eisenberg
5. rlidwka

   added a commit that references this issue on Dec 10, 2020

   Add 'empty' style option for !!null

   ...

   421ed22
6. rlidwka commented on Dec 10, 2020

   

   rlidwka

   on Dec 10, 2020

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   Fixed in 421ed22 (located in dev branch at the moment).

   Normally, I'd advise to override null schema. But some other parsers (namely, psych and ruamel.yaml) serialize null this way, so it makes sense to at least provide an option.
7. rlidwka

   closed this as completedon Dec 10, 2020