fix(addons/info): Cannot read property 'props' of undefined

[evenchange4]

Issue:

This error occurred when I want to update storybook. (I use yarn to lock versions.)

-    "@storybook/addon-info": "^3.0.1",
-    "@storybook/addon-options": "^3.0.1",
-    "@storybook/addon-storyshots": "^3.0.0",
-    "@storybook/react": "^3.0.1",
+    "@storybook/addon-info": "^3.1.3",
+    "@storybook/addon-options": "^3.1.2",
+    "@storybook/addon-storyshots": "^3.1.2",
+    "@storybook/react": "^3.1.3",

What I did

Remove the this for functional component.

How to test

Add some links for your story description in the second paramter of addWithInfo:

storiesOf('DomAlign', module).addWithInfo(
  'API',
  `
      With config: ${JSON.stringify(alignConfig)}.
+     Reference: React.js [dom-align](https://github.com/yiminghe/dom-align) integration component.
    `,
  () => <Container />,
  { inline: true, propTables: [DomAlign] },
);

There will be an a tag rendered on the page, and this PR fixed the A component error.

Source code
Demo link
Related issue mcs-lite PR#357

[codecov]

Codecov Report

Merging #1258 into master will not change coverage.
The diff coverage is 0%.

@@           Coverage Diff           @@
##           master    #1258   +/-   ##
=======================================
  Coverage   13.73%   13.73%           
=======================================
  Files         207      207           
  Lines        4638     4638           
  Branches      513      504    -9     
=======================================
  Hits          637      637           
- Misses       3557     3567   +10     
+ Partials      444      434   -10

Impacted Files	Coverage Δ
addons/info/src/components/markdown/text.js	0% <0%> (ø)	⬆️
...react-native/src/manager/components/PreviewHelp.js	0% <0%> (ø)	⬆️
...codemod/src/transforms/update-organisation-name.js	40.62% <0%> (ø)	⬆️
app/react-native/src/preview/story_kind.js	0% <0%> (ø)	⬆️
lib/ui/src/modules/ui/containers/down_panel.js	23.52% <0%> (ø)	⬆️
addons/events/src/components/Event.js	0% <0%> (ø)	⬆️
...rc/modules/ui/components/left_panel/text_filter.js	33.33% <0%> (ø)	⬆️
app/react/src/client/preview/init.js	0% <0%> (ø)	⬆️
addons/storyshots/src/storybook-channel-mock.js	0% <0%> (ø)	⬆️
app/react-native/src/bin/storybook-start.js	0% <0%> (ø)	⬆️
... and 13 more

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[shilman]

@evenchange4 Thanks for the contribution! It looks good to me. Can you explain how to reproduce the problem and test the change? Thanks!

[evenchange4]

@shilman Sure, I have updated my description above.

[shilman]

Thanks! Confirmed the problem and added a test in #1259

[shilman]

Requested a small change. what do you think?

[shilman]

Suggestion: add target="_blank" rel="noopener noreferrer"

[evenchange4]

Agree, I always put external links here, and there is already @storybook/addon-links solution for linking between stories at same site.

[shilman]

released https://github.com/storybooks/storybook/releases/tag/v3.1.4

thanks @evenchange4 !