external-repos/squoosh
1
0
Fork 1
mirror of https://github.com/GoogleChromeLabs/squoosh.git synced 2025-11-13 09:17:20 +00:00
Code Issues Packages Projects Releases Wiki Activity

Fix JXL mimetype (#970)

Browse Source
This commit is contained in:
Jake Archibald
2021-03-10 14:56:59 +00:00
committed by GitHub
parent 42cfbe11a1
commit ef77da9e96
3 changed files with 18 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files

16
src/client/lazy-app/util/index.ts
View File

@@ -137,7 +137,7 @@ export function blobToText(blob: Blob): Promise<string> {
return new Response(blob).text();
}
const magicNumberToMimeType = new Map<RegExp, string>([
const magicNumberMapInput = [
[/^%PDF-/, 'application/pdf'],
[/^GIF87a/, 'image/gif'],
[/^GIF89a/, 'image/gif'],
@@ -150,11 +150,17 @@ const magicNumberToMimeType = new Map<RegExp, string>([
[/^RIFF....WEBPVP8[LX ]/, 'image/webp'],
[/^\xF4\xFF\x6F/, 'image/webp2'],
[/^\x00\x00\x00 ftypavif\x00\x00\x00\x00/, 'image/avif'],
[/^\xff\x0a/, 'image/jpegxl'],
[/^\x00\x00\x00\x0cJXL \x0d\x0a\x87\x0a/, 'image/jpegxl'],
]);
[/^\xff\x0a/, 'image/jxl'],
[/^\x00\x00\x00\x0cJXL \x0d\x0a\x87\x0a/, 'image/jxl'],
] as const;
export async function sniffMimeType(blob: Blob): Promise<string> {
export type ImageMimeTypes = typeof magicNumberMapInput[number][1];
const magicNumberToMimeType = new Map<RegExp, ImageMimeTypes>(
magicNumberMapInput,
);
export async function sniffMimeType(blob: Blob): Promise<ImageMimeTypes | ''> {
const firstChunk = await blobToArrayBuffer(blob.slice(0, 16));
const firstChunkString = Array.from(new Uint8Array(firstChunk))
.map((v) => String.fromCodePoint(v))