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Preserve blob content type when stripping EXIF data

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This commit is contained in:
Evan Hahn
2021-08-24 14:38:20 -05:00
committed by GitHub
parent fab883c2a6
commit 48cc2b5f11
2 changed files with 74 additions and 3 deletions
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9
ts/util/scaleImageToLevel.ts
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@@ -102,10 +102,13 @@ async function getCanvasBlobAsJPEG(
return canvasToBlob(canvas, IMAGE_JPEG, quality);
}
async function stripImageFileEXIFData(file: File | Blob): Promise<Blob> {
async function stripImageFileEXIFData(
file: File | Blob,
type: MIMEType
): Promise<Blob> {
const arrayBuffer = await file.arrayBuffer();
const xArrayBuffer = await sharp(new Uint8Array(arrayBuffer)).toBuffer();
return new Blob([xArrayBuffer]);
return new Blob([xArrayBuffer], { type });
}
export async function scaleImageToLevel(
@@ -139,7 +142,7 @@ export async function scaleImageToLevel(
MEDIA_QUALITY_LEVEL_DATA.get(level) || DEFAULT_LEVEL_DATA;
if (fileOrBlobOrURL.size <= thresholdSize) {
const blob = await stripImageFileEXIFData(fileOrBlobOrURL);
const blob = await stripImageFileEXIFData(fileOrBlobOrURL, contentType);
return {
blob,
contentType,