wip

# Conflicts:
#	codecs/cpp.Dockerfile
#	codecs/imagequant/example.html
#	codecs/webp/dec/webp_dec.d.ts
#	codecs/webp/dec/webp_dec.js
#	codecs/webp/dec/webp_dec.wasm
#	codecs/webp/enc/webp_enc.d.ts
#	codecs/webp/enc/webp_enc.js
#	codecs/webp/enc/webp_enc.wasm
#	package-lock.json
#	package.json
#	src/codecs/tiny.webp
#	src_old/codecs/encoders.ts
#	src_old/codecs/processor-worker/tiny.avif
#	src_old/codecs/processor-worker/tiny.webp
#	src_old/codecs/tiny.webp
#	src_old/components/compress/index.tsx
#	src_old/lib/util.ts
#	src_old/sw/util.ts

src_old/codecs/generic/util.ts

@@ -0,0 +1,13 @@
+import { canvasEncode } from '../../lib/util';
+
+export async function canvasEncodeTest(mimeType: string) {
+  try {
+    const blob = await canvasEncode(new ImageData(1, 1), mimeType);
+    // According to the spec, the blob should be null if the format isn't supported…
+    if (!blob) return false;
+    // …but Safari & Firefox fall back to PNG, so we need to check the mime type.
+    return blob.type === mimeType;
+  } catch (err) {
+    return false;
+  }
+}