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Font Library: install fonts in sequence to work around race condition #60180

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Mar 26, 2024
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Original file line number Diff line number Diff line change
Expand Up @@ -234,10 +234,23 @@ export function makeFontFacesFormData( font ) {
}

export async function batchInstallFontFaces( fontFamilyId, fontFacesData ) {
const promises = fontFacesData.map( ( faceData ) =>
fetchInstallFontFace( fontFamilyId, faceData )
);
const responses = await Promise.allSettled( promises );
const responses = [];

/*
* Uses the same response format as Promise.allSettled, but executes requests in sequence to work
* around a race condition that can cause an error when the fonts directory doesn't exist yet.
*/
for ( const faceData of fontFacesData ) {
try {
const response = await fetchInstallFontFace(
fontFamilyId,
faceData
);
responses.push( { status: 'fulfilled', value: response } );
} catch ( error ) {
responses.push( { status: 'rejected', reason: error } );
}
}

const results = {
errors: [],
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