//#region packages/media-core/src/base64.d.ts
/** Estimates decoded bytes without allocating a cleaned copy of the base64 payload. */
declare function estimateBase64DecodedBytes(base64: string): number;
/**
 * Normalizes and validates a base64 string, returning canonical no-whitespace
 * base64 only when the input has valid alphabet, padding, and length.
 */
declare function canonicalizeBase64(base64: string): string | undefined;
//#endregion
export { estimateBase64DecodedBytes as n, canonicalizeBase64 as t };