@just-every/ensemble/dist/cjs/utils/image_validation.cjs

LLM provider abstraction layer with unified streaming interface

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.isValidBase64 = isValidBase64;
exports.detectImageType = detectImageType;
function isValidBase64(str) {
    try {
        return btoa(atob(str)) === str;
    }
    catch {
        return false;
    }
}
function detectImageType(base64Data) {
    try {
        const decoded = atob(base64Data.slice(0, 16));
        const bytes = new Uint8Array(decoded.split('').map(char => char.charCodeAt(0)));
        if (bytes[0] === 0xff && bytes[1] === 0xd8)
            return 'image/jpeg';
        if (bytes[0] === 0x89 && bytes[1] === 0x50)
            return 'image/png';
        if (bytes[0] === 0x47 && bytes[1] === 0x49)
            return 'image/gif';
        if (bytes[0] === 0x52 && bytes[1] === 0x49)
            return 'image/webp';
        return null;
    }
    catch {
        return null;
    }
}
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