/**
 * Shared document-type rules used by both the ID-type selection screen
 * (SmartComplyFlow) and the capture component (DocumentCapture) — kept in
 * one place so the two can't silently diverge on which documents need a
 * back-side photo.
 */
/**
 * Whether a document's back side should be captured:
 *   true      — required, the flow forces a back-capture step
 *   false     — never offered
 *   "optional" — offered, but the user can skip it and proceed on front alone
 */
export type BackSideMode = boolean | "optional";
/** Documents where the backend OCR pipeline needs (or can use) the reverse side. */
export declare function requiresBackSide(documentType: string): BackSideMode;
/**
 * Scale ratio for fitting an image within maxWidth x maxHeight, never
 * upscaling. Shared by DocumentCapture's canvas sizing and compressImage so
 * both agree on the same clamp-at-1 behavior.
 */
export declare function computeScaleRatio(srcWidth: number, srcHeight: number, maxWidth: number, maxHeight: number): number;
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