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General Tech Bugs & Fixes 2 years ago
Posted on 16 Aug 2022, this text provides information on Bugs & Fixes related to General Tech. Please note that while accuracy is prioritized, the data presented might not be entirely correct or up-to-date. This information is offered for general knowledge and informational purposes only, and should not be considered as a substitute for professional advice.
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TypeScript newbie here. I have a below component using styled-components that I would like to convert to TypeScript.
styled-components
TypeScript
import React from 'react' import PropTypes from 'prop-types' import styled from 'styled-components' const propTypes = { name: PropTypes.string.isRequired // https://material.io/tools/icons/?style=baseline } const Icon = styled(({name, className, ...props}) => <i className={`material-icons ${className}`} {...props}>{name}i>)` font-size: ${props => props.theme.sizeLarger}; ` Icon.propTypes = propTypes export default Icon
I know I can replace my propTypes with an interface
propTypes
interface
interface Props { name: string }
However, TypeScript complains that I leave className undeclared. The thing is, I would ideally like to use the interface as a sort of spec for props that a developer can provide, without having to declare props like className or theme which are injected by libraries like styled-components.
className
theme
How do I properly convert this component to TypeScript?
import React from "react"; import styled from "styled-components"; interface Props { name: string; className?: string; } const NonStyledIcon: React.SFC<Props> = ({ name, className, ...props }) => ( <i className={`material-icons ${className}`} {...props}> {name} i> ); const Icon = styled(NonStyledIcon)` font-size: ${props => props.theme.sizeLarger}; `; export default Icon;
As per the styled-components TypeScript docs: when defining a component you will need to mark className as optional in your Props interface
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