Invalid `displayName` parsing starting with v2.1.0

[jzempel]

After the removal of the parsing filter in #368, the first displayName encountered is selected, whether or not its component is exported. To test, add the following lines to the end of https://github.com/styleguidist/react-docgen-typescript/blob/master/examples/react-styleguidist-example/components/HocComponent.tsx:

Component.displayName = 'DisplayNameError';
HocComponent.displayName = 'DisplayNameSuccess';

Invalid results based on v2.1.0, tested via node -e 'console.log(require("react-docgen-typescript").parse("./ModifiedHocComponent.tsx"))'...

[
  {
    tags: {},
    filePath: './ModifiedHocComponent.tsx',
    description: '',
    displayName: 'DisplayNameError',
    methods: [],
    props: {}
  }
]

Valid results based on v2.0.0, testing the same...

[
  {
    tags: {},
    filePath: './ModifiedHocComponent.tsx',
    description: '',
    displayName: 'hoc',
    methods: [],
    props: {}
  },
  {
    tags: {},
    filePath: './ModifiedHocComponent.tsx',
    description: 'This example shows HocComponent',
    displayName: 'DisplayNameSuccess',
    methods: [],
    props: {
      prop1: [Object],
      prop2: [Object],
      prop3: [Object],
      prop4: [Object]
    }
  }
]

[pvasek]

I am surprised that this wasn't included in our test cases before :(
You are right that as PR #368 fixed one thing, it broke this one.

[jesstelford]

Is this the same issue as in #437? And would the suggested fix there, also fix this case?

[kylemh]

Can you re-open this @pvasek - it was closed with #441

[pvasek]

@kylemh thanks for pointing that out.

[github-actions]

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