Remember source string for empty/null nodes

[kasp1]

Hi there, I can't seem to be able to stringify null as expected, any idea what can be wrong?

repro:

const YAML = require('yaml')

let doc = YAML.parse('hi:')

console.log(doc) // 'Object {hi: null}'

// expected string: 'hi:'
console.log(YAML.stringify(doc)) // '? hi'

YAML.scalarOptions.null.nullStr = ''

console.log(YAML.stringify(doc)) // '? hi'

YAML.scalarOptions.null.nullStr = '~'

console.log(YAML.stringify(doc)) // '? hi'

[eemeli]

The option to do what you want is { simpleKeys: true }. This isn't the first time this is asked, so I think I need to find a way to improve the docs on this, to make it clearer/more discoverable.

[eemeli]

Also, this is a bit besides what you're reporting, but the string representation of the null value isn't being retained at the AST level like it really ought to. Should fix that too.

[kasp1]

Hi, thanks for your advice and for your library. :-)

[eemeli]

Fixed in #193.