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