reactjstypescriptwebpack

Type 'string' is not assignable to type '"inherit" | "initial" | "unset" | "fixed" | "absolute" | "static" | "relative" | "sticky"'

I get the following error in my application (npm 5.4.2, react 15.4, typescript 2.5.3, webpack 2.2.1, webpack-dev-server 2.4.1).

This will work:

<div style={{position: 'absolute'}}>working</div>

This will not compile:

const mystyle = {
    position: 'absolute'            
} 

<div style={mystyle}>not working</div>

The compile error is:

ERROR in ./src/components/Resource.tsx
(61,18): error TS2322: Type '{ style: { position: string; }; children: string; }' is not assignable to type 'DetailedHTMLProps<HTMLAttributes<HTMLDivElement>, HTMLDivElement>'.
  Type '{ style: { position: string; }; children: string; }' is not assignable to type 'HTMLAttributes<HTMLDivElement>'.
    Types of property 'style' are incompatible.
      Type '{ position: string; }' is not assignable to type 'CSSProperties'.
        Types of property 'position' are incompatible.
          Type 'string' is not assignable to type '"inherit" | "initial" | "unset" | "fixed" | "absolute" | "static" | "relative" | "sticky"'.
webpack: Failed to compile.

But what't the difference? I can fix it with: 

const mystyle = {
    position: 'absolute' as 'absolute'            
}

but is this a good solution?

I don't have this problem with other style/css properties.

I found a similar problem on github: https://github.com/Microsoft/TypeScript/issues/11465 but if understand it right, it was a typescript bug in an ealier version.

Any help appreciated.

Solution

  • This is a workaround, but it is alright. Some other solution is:

    const mystyles = {
   position: 'absolute',
} as React.CSSProperties;

    You can check back when this issue will be solved. Around TS 2.6 i guess, judging by milestones.