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feat: introduce as prop for Hyperlink #3082

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feat: introduce as prop for Hyperlink #3082

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97a577b
feat: introduce as prop for Hyperlink
adamstankiewicz May 29, 2024
9ead6aa
docs: add README example
adamstankiewicz May 29, 2024
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17 changes: 13 additions & 4 deletions src/Hyperlink/index.tsx
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Original file line number Diff line number Diff line change
@@ -1,13 +1,17 @@
import React from 'react';
import PropTypes from 'prop-types';
import classNames from 'classnames';
import {
type BsPrefixRefForwardingComponent as ComponentWithAsProp,
type BsPrefixProps,
} from 'react-bootstrap/esm/helpers';
import { Launch } from '../../icons';
import Icon from '../Icon';

export const HYPER_LINK_EXTERNAL_LINK_ALT_TEXT = 'in a new tab';
export const HYPER_LINK_EXTERNAL_LINK_TITLE = 'Opens in a new tab';

interface Props extends Omit<React.ComponentPropsWithRef<'a'>, 'href' | 'target'> {
interface HyperlinkProps extends BsPrefixProps, Omit<React.ComponentPropsWithRef<'a'>, 'href' | 'target'> {
/** specifies the URL */
destination: string;
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@adamstankiewicz adamstankiewicz May 29, 2024 •
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When using Hyperlink with Link from React Router (or GatsbyLink on the Paragon docs site example), the destination prop will not suffice as it gets passed to an href prop, leading to the link getting treated as an external URL (triggering full-page refresh).

Both Link and GatsbyLink utilize the standard hyperlink (i.e., a) when href prop is provided; to get it to work with internal routing, the to prop must be passed.

Because we use prop spreading of all attributes passed to the Hyperlink component, consumers can pass to prop but would continue to need to pass destination as it's a required prop.

We will need to determine how consumers can pass to without needing to also pass an identical value to destination (i.e., href), e.g.:

<Hyperlink
  as={GatsbyLink}
  to="/components/button"
  // `destination` is still a required prop even though the `to` takes precedence.
  destination="/components/button"
>
  Button
</Hyperlink>

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@bradenmacdonald Curious if you might have any thoughts on how to mitigate this concern around to vs. href vs. destination?

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Yeah, I was wondering about this.

I think one nice option is to change the Paragon hyperlink to accept to instead of destination and just treat destination as a deprecated alias for to ?

Otherwise to avoid the need to introspect as and determine what prop to pass based on some conditions, you could change the logic that currently converts destination to href and instead convert destination to both href and to, and unconditionally pass both props to the inner as component. Though I think this may display a DOM warning in the console that a doesn't accept a to attribute. So maybe some conditional logic is actually needed.

/** Content of the hyperlink */
Expand All @@ -27,7 +31,10 @@ interface Props extends Omit<React.ComponentPropsWithRef<'a'>, 'href' | 'target'
target?: '_blank' | '_self';
}

const Hyperlink = React.forwardRef<HTMLAnchorElement, Props>(({
type HyperlinkType = ComponentWithAsProp<'a', HyperlinkProps>;

const Hyperlink: HyperlinkType = React.forwardRef<HTMLAnchorElement, HyperlinkProps>(({
as: Component = 'a',
className,
destination,
children,
Expand Down Expand Up @@ -77,7 +84,7 @@ const Hyperlink = React.forwardRef<HTMLAnchorElement, Props>(({
}

return (
<a
<Component
ref={ref}
className={classNames(
'pgn__hyperlink',
Expand All @@ -95,11 +102,12 @@ const Hyperlink = React.forwardRef<HTMLAnchorElement, Props>(({
>
{children}
{externalLinkIcon}
</a>
</Component>
);
});

Hyperlink.defaultProps = {
as: 'a',
className: undefined,
target: '_self',
onClick: () => {},
Expand All @@ -111,6 +119,7 @@ Hyperlink.defaultProps = {
};

Hyperlink.propTypes = {
as: PropTypes.elementType,
/** specifies the URL */
destination: PropTypes.string.isRequired,
/** Content of the hyperlink */
Expand Down
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