Tips for choosing the correct type of object to use for styling in Vue/Typescript: { }

This is how I implement styling in my Vue TypeScript project.

    private styleTableObject: CSSStyleSheet = {
      width: '100%',
      height: '76%'
    }

I am being forced to use the any type.

    private styleTableObject: any = {
      width: '100%',
      height: '76%'
    }

Error messages:

Type '{ width: string; height: string; }' is not compatible with type 'CSSStyleSheet'.
  Object literals can only specify known properties, and 'width' does not exist in type 'CSSStyleSheet'.

If I use any type suggested by Visual Studio Code, I receive the following error messages:

 Type '{ width: string; height: string; }' is not compatible with type 'StyleSheet'.
  Object literals can only specify known properties, and 'width' does not exist in type 'StyleSheet'.

219:13 Type '{ width: string; height: string; }' is missing required properties such as alignContent, alignItems, alignSelf, alignmentBaseline, and more.
typescriptvue.js

Answer №1

UPDATE 2024: I originally wrote this answer back in 2020 before transitioning away from Vue to another framework. Therefore, the information provided here may no longer be accurate or relevant. Please refer to kyis' answer for more current details.

To address this issue, utilize 

Partial<CSSStyleDeclaration>
instead

Partial<T>

This function constructs a type with all properties of T set to optional. It creates a type that consists of all possible subsets of a specified type

Resource: https://www.typescriptlang.org/docs/handbook/utility-types.html#partialt

Your code snippet will resemble the following:

private styleTableObject: Partial<CSSStyleDeclaration> = {
    width: '100%',
    height: '76%'
}

Answer №2

Vue 3 introduces a new type specifically for CSS property objects. Keep in mind that using 

Partial<CSSStyleDeclaration>
may lead to type checking errors in your template (especially when Volar is enabled):

import type { CSSProperties } from 'vue'

const styleTableObject: CSSProperties = {
  width: '100%',
  height: '76%'
}

<div :style="styleTableObject" />

Answer №3

That solution appears to be effective:

const newStyle: Partial<CSSStyleDeclaration> = {};
const newArrowStyle: Partial<CSSStyleDeclaration> = {};

const information = ref({
 strokeWidth: 0.108,
 style: newStyle,
 arrowStyle: newArrowStyle,
});

Is there a method to achieve this without using separate variables when initializing const information?

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