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Original file line number Diff line number Diff line change
Expand Up @@ -152,7 +152,12 @@ function getDocumentFromRoot(root: HoistableRoot): Document {
// ReactDOM.Preload
// --------------------------------------
type PreloadAs = ResourceType;
type PreloadOptions = {as: PreloadAs, crossOrigin?: string, integrity?: string};
type PreloadOptions = {
as: PreloadAs,
crossOrigin?: string,
integrity?: string,
type?: string,
};
function preload(href: string, options: PreloadOptions) {
if (__DEV__) {
validatePreloadArguments(href, options);
Expand Down Expand Up @@ -208,6 +213,7 @@ function preloadPropsFromPreloadOptions(
as,
crossOrigin: as === 'font' ? '' : options.crossOrigin,
integrity: options.integrity,
type: options.type,
};
}

Expand Down
Original file line number Diff line number Diff line change
Expand Up @@ -4203,7 +4203,7 @@ type PreloadOptions = {
as: PreloadAs,
crossOrigin?: string,
integrity?: string,
media?: string,
type?: string,
};
export function preload(href: string, options: PreloadOptions) {
if (!currentResources) {
Expand Down Expand Up @@ -4568,6 +4568,7 @@ function preloadPropsFromPreloadOptions(
href,
crossOrigin: as === 'font' ? '' : options.crossOrigin,
integrity: options.integrity,
type: options.type,
};
}

Expand Down
18 changes: 16 additions & 2 deletions packages/react-dom/src/__tests__/ReactDOMFloat-test.js
Original file line number Diff line number Diff line change
Expand Up @@ -2267,7 +2267,7 @@ body {
// @gate enableFloat
it('always enforces crossOrigin "anonymous" for font preloads', async () => {
function App() {
ReactDOM.preload('foo', {as: 'font'});
ReactDOM.preload('foo', {as: 'font', type: 'font/woff2'});
ReactDOM.preload('bar', {as: 'font', crossOrigin: 'foo'});
ReactDOM.preload('baz', {as: 'font', crossOrigin: 'use-credentials'});
ReactDOM.preload('qux', {as: 'font', crossOrigin: 'anonymous'});
Expand All @@ -2285,7 +2285,13 @@ body {
expect(getMeaningfulChildren(document)).toEqual(
<html>
<head>
<link rel="preload" as="font" href="foo" crossorigin="" />
<link
rel="preload"
as="font"
href="foo"
crossorigin=""
type="font/woff2"
/>
<link rel="preload" as="font" href="bar" crossorigin="" />
<link rel="preload" as="font" href="baz" crossorigin="" />
<link rel="preload" as="font" href="qux" crossorigin="" />
Expand Down Expand Up @@ -2347,6 +2353,7 @@ body {

function ClientApp() {
ReactDOM.preload('foo', {as: 'style'});
ReactDOM.preload('font', {as: 'font', type: 'font/woff2'});
React.useInsertionEffect(() => ReactDOM.preload('bar', {as: 'script'}));
React.useLayoutEffect(() => ReactDOM.preload('baz', {as: 'font'}));
React.useEffect(() => ReactDOM.preload('qux', {as: 'style'}));
Expand All @@ -2366,6 +2373,13 @@ body {
<html>
<head>
<link rel="preload" as="style" href="foo" />
<link
rel="preload"
as="font"
href="font"
crossorigin=""
type="font/woff2"
/>
<link rel="preload" as="font" href="baz" crossorigin="" />
<link rel="preload" as="style" href="qux" />
</head>
Expand Down