Fix thumbnail generation when offscreen canvas fails (#9272)

pull/28217/head
Michael Telatynski 2022-09-13 13:34:35 +01:00 committed by GitHub
parent f67b8d0d32
commit b1cecccb57
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1 changed files with 2 additions and 3 deletions

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@ -92,9 +92,8 @@ export async function createThumbnail(
context.drawImage(element, 0, 0, targetWidth, targetHeight);
let thumbnailPromise: Promise<Blob>;
if (window.OffscreenCanvas) {
thumbnailPromise = (canvas as OffscreenCanvas).convertToBlob({ type: mimeType });
if (canvas instanceof window.OffscreenCanvas) {
thumbnailPromise = canvas.convertToBlob({ type: mimeType });
} else {
thumbnailPromise = new Promise<Blob>(resolve => (canvas as HTMLCanvasElement).toBlob(resolve, mimeType));
}