Function parseDataUrl

frontend/util/util.ts:451–472

(dataUrl: string)

};

function parseDataUrl(dataUrl: string): ParsedDataUrl {
    if (!dataUrl.startsWith("data:")) throw new Error("Invalid data URL");
    const [header, data] = dataUrl.split(",", 2);
    if (data === undefined) throw new Error("Invalid data URL: missing data");

    const meta = header.slice(5);
    let mimeType = "text/plain;charset=US-ASCII";
    const parts = meta.split(";");
    if (parts[0]) mimeType = parts[0];
    const isBase64 = parts.some((p) => p.toLowerCase() === "base64");

    let buffer: Uint8Array;
    if (isBase64) {
        buffer = base64ToArray(data);
    } else {
        // assume text
        const decoded = decodeURIComponent(data);
        buffer = new TextEncoder().encode(decoded);
    }

    return { mimeType, buffer };
}

function formatRelativeTime(timestamp: number): string {
    if (!timestamp) {