Empty array element is not parsed as Node, refs https://github.com/swagger-api/apidom/issues/883

[frantuma]

Similar to #883, when an array item is empty in YAML (see below), such item is not parsed as an element

e.g.

asyncapi: '2.2.0'
components:
  schemas:
    test:
      type: object
      required:
        - 

is parsed into:

/home/frantuma/.nvm/versions/node/v16.9.0/bin/node /dati/dev/progetti/swagger/projects/apidom/master/apidom/node_modules/mocha/bin/mocha --require ts-node/register/transpile-only --ui bdd --reporter /opt/WebStorm/plugins/NodeJS/js/mocha-intellij/lib/mochaIntellijReporter.js /dati/dev/progetti/swagger/projects/apidom/master/apidom/packages/apidom-ls/test/openapi-yaml-parse.ts --grep ^apidom-parse-test test parse yaml$
asyncApi2 0:0 - 7:0
member 0:0 - 0:17
string 0:0 - 0:8
asyncApiVersion 0:10 - 0:17
member 1:0 - 7:0
string 1:0 - 1:10
components 2:2 - 7:0
member 2:2 - 7:0
string 2:2 - 2:9
object 3:4 - 7:0
member 3:4 - 7:0
string 3:4 - 3:8
schema 4:6 - 7:0
member 4:6 - 4:18
string 4:6 - 4:10
string 4:12 - 4:18
member 5:6 - 7:0
string 5:6 - 5:14
array 6:8 - 7:0

or

asyncapi: '2.2.0'
components:
  schemas:
    test:
      type: object
      required:
        - 
        - aa

is parsed into:

member 0:0 - 0:17
string 0:0 - 0:8
asyncApiVersion 0:10 - 0:17
member 1:0 - 8:0
string 1:0 - 1:10
components 2:2 - 8:0
member 2:2 - 8:0
string 2:2 - 2:9
object 3:4 - 8:0
member 3:4 - 8:0
string 3:4 - 3:8
schema 4:6 - 8:0
member 4:6 - 4:18
string 4:6 - 4:10
string 4:12 - 4:18
member 5:6 - 8:0
string 5:6 - 5:14
array 6:8 - 8:0
string 7:10 - 7:12

We would need to have these items parsed as the expected array type, or if not possible as string elements, similarly to what done in #883 for member values.

[char0n]

Right, this looks as another corner-case and follow up of #812.

[char0n]

First PR fixing this has landed: #941

The above PRs map and fix all the possible cases of empty nodes as documented in YAML 1.2.2 specification.

I'll be building empty node replacement on top of these changes.