Material-ui: getAriaValueText on Slider not working

[junaidatique]

The getAriaValueText prop doesn't work for Slider even in the examples of the docs.

• [x] This is not a v0.x issue.
• [x] I have searched the issues of this repository and believe that this is not a duplicate.

Expected Behavior 🤔

When function is provided on getAriaValueText prop for Slider, it should display the return string value in the label.

Current Behavior 😯

Right now it is showing value in the label which shouldn't be the case.

Steps to Reproduce 🕹

Link:

1. https://codesandbox.io/s/5r8pi

Context 🔦

I am trying to show the selected value as label on slider.

Your Environment 🌎

| Tech | Version |
|--------------|---------|
| Material-UI | v4.3.0 |
| React | 16.8 |
| Browser | Chrome |
| TypeScript | x |
| etc. | |

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[junaidatique]

This is not a support. This is bug. The docs, API and example given does not match. How can a mentioned functionality that is not working can be marked as a support?

[joshwooding]

@junaidatique getAriaValueText affects the aria-valuetext attribute (https://github.com/mui-org/material-ui/blob/ede30a5a0af518e780414bd853b93bb275863f48/packages/material-ui/src/Slider/Slider.js#L700) maybe you’re looking for the valueLabelFormat prop?

[lukehtravis]

Having same problem as @junaidatique

[charlesemarsh]

If anyone else comes across this one.. the variable you pass to this prop should be a function, not a string