16 lines
606 B
TypeScript
16 lines
606 B
TypeScript
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export function mimeTypeFromBase64(base64: string) {
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if (base64.startsWith("/9j/")) return "image/jpeg";
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if (base64.startsWith("iVBORw0KGgo")) return "image/png";
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if (base64.startsWith("R0lGODlh")) return "image/gif";
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if (base64.startsWith("UklGRg")) return "image/webp";
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throw new Error("Unknown image type");
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}
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export function extFromMimeType(mimeType: string) {
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if (mimeType === "image/jpeg") return "jpg";
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if (mimeType === "image/png") return "png";
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if (mimeType === "image/gif") return "gif";
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if (mimeType === "image/webp") return "webp";
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throw new Error("Unknown image type");
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}
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