/**
 * Encoding helpers for the embedded asset tree (compiled binaries).
 *
 * The tree ships inside the bundled JS as `Record<string, Record<string, string>>`,
 * so binary siblings (.png, .woff2, .wasm, etc.) cannot be stored as raw bytes.
 * We base64-encode them with a NUL-prefixed sentinel so the runtime serve path
 * recognizes which entries are binary and decodes back to a Buffer before
 * writing the HTTP response. UTF-8 decoding the same bytes (the v1.29 first
 * pass) corrupts every binary asset.
 */
import { Buffer } from 'node:buffer';
export declare function isBinaryAssetExtension(ext: string): boolean;
/**
 * Encode a file's bytes for inclusion in the embedded asset tree. Text
 * extensions stay as UTF-8 strings (cheap to template-literalize and
 * round-trip cleanly through `res.end(string)`). Binary extensions get
 * the sentinel + base64 treatment.
 */
export declare function encodeAssetForEmbed(content: Buffer, ext: string): string;
/**
 * Decode an embedded asset value back into the bytes the runtime should
 * write to the response. Returns `{ buffer }` for binary entries and
 * `{ text }` for plain UTF-8. Callers pick `res.end(buffer)` or
 * `res.end(text)` accordingly so binary bytes round-trip unchanged.
 */
export declare function decodeEmbeddedAsset(value: string): {
    text?: string;
    buffer?: Buffer;
};
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