syuilo
16 lines
444 B
TypeScript
16 lines
444 B
TypeScript
/*
|
|
* SPDX-FileCopyrightText: syuilo and misskey-project
|
|
* SPDX-License-Identifier: AGPL-3.0-only
|
|
*/
|
|
|
|
let isWebpSupportedCache: boolean | undefined;
|
|
export function isWebpSupported() {
|
|
if (isWebpSupportedCache === undefined) {
|
|
const canvas = document.createElement('canvas');
|
|
canvas.width = 1;
|
|
canvas.height = 1;
|
|
isWebpSupportedCache = canvas.toDataURL('image/webp').startsWith('data:image/webp');
|
|
}
|
|
return isWebpSupportedCache;
|
|
}
|