// Gołe szympansy /: May 2023

Monday, 22 May 2023

I had this error when added MDX documentation to a story:

Uncaught TypeError: Cannot read property 'split' of undefined

at parseKind (index.js:90)

at defaultTitleSlot (Title.js:46)

at Title (Title.js:71)

at renderWithHooks (react-dom.development.js:14803)

at mountIndeterminateComponent (react-dom.development.js:17482)

at beginWork (react-dom.development.js:18596)

at HTMLUnknownElement.callCallback (react-dom.development.js:188)

at ZoneDelegate.push../node_modules/zone.js/dist/zone.js.ZoneDelegate.invokeTask (zone.js:421)

at Zone.push../node_modules/zone.js/dist/zone.js.Zone.runTask (zone.js:188)

at ZoneTask.push../node_modules/zone.js/dist/zone.js.ZoneTask.invokeTask [as invoke] (zone.js:503)

Story:

import doc from './controls.mdx';

export default {

title: 'Controls',

parameters: {

docs: {

page: doc

}

decorators: [

moduleMetadata({

declarations: [FooBarComponent],

imports: [NgbModule, ClickOutsideModule]

}),

withPreview

]

};

export const TooltipClick = () => ({

component: FooBarComponent,

template: statusProcessTemplate

});

TooltipClick.story = {

name: 'Process status',

parameters: { preview: [{ tab: 'HTML', language: 'html', template: statusProcessTemplate }] }

};

I don't know why, but I removed the line:

component: FooBarComponent,

and then documentation started working again.

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