Unhelpful error message when the currently highlighted item is not in the array returned by getFilteredItems()

[carlpaten]

Using react-autocomplete 1.0.1, React 15.2.1.

When hovering the mouse pointer over any entry in Autocomplete's dropdown list, my application crashes with the following error message and stack trace:

0x800a138f - JavaScript runtime error: Unable to get property 'ownerDocument' of undefined or null reference

    getClientPosition [util.js] Line 5  TypeScript
    getOffset [util.js] Line 68 TypeScript
    module.exports.offset [util.js] Line 370    TypeScript
    scrollIntoView [dom-scroll-into-view.js] Line 18    TypeScript
    maybeScrollItemIntoView [Autocomplete.js] Line 88   TypeScript
    componentDidUpdate [Autocomplete.js] Line 81    TypeScript
    invokeComponentDidUpdateWithTimer [react.js] Line 5746  Script
    ...

Autocomplete.componentDidUpdate gets called by React, and calls this.maybeScrollItemIntoView. this.refs is not populated (it only has the fields input and menu), so this.refs['item-' + this.state.highlightedIndex] becomes undefined and gets passed down. getClientPosition tries to use it, and triggers a crash.

I'm not super familiar with string refs, so I'm not sure what the issue is.

If this doesn't immediately ring a bell, I'll try to put together a minimal repro.

[carlpaten]

Turns out that this is a side-effect of my work-around in #140. Hovering over an item triggers a re-render of Autocomplete, but if rendered is maxed out then the highlighted item doesn't render. Here the only bug is that the error message is unrelated to the actual cause.

Two possible fixes:

• Never assume that this.getFilteredItems()[this.state.highlightedIndex] exists, and throw when it doesn't;
• Throw when shouldItemRender returns false for the element corresponding to this.state.highlightedIndex.

Minor stuff, but it would have saved me hours ;_;

[CMTegner]

I believe #139 fixed this problem, which should be released in the next patch version. Leave a comment if this is still causing problems for you.