/** Escape a string for embedding in a GDScript string literal via runtime template
 *  interpolation (participates in GDScript % formatting). % → %% and ' → \'. */
export declare function gdEscape(s: string): string;
/** Escape a string for a GDScript property-value literal (does NOT participate in %
 *  formatting, so % and ' are preserved verbatim). Used by scene-commit serializeGdValue.
 *  Shares escapeGdStringCore with gdEscape — change escape logic in one place. */
export declare function escapeForGdLiteral(s: string): string;
/** Format a number as a Godot-compatible float literal (e.g. 2 → 2.0). */
export declare const ff: (n: number) => string;
/** Normalize leading spaces to tabs to prevent "Mixed tabs and spaces" errors.
 *  Detects the smallest nonzero leading-space count as the indent unit,
 *  then replaces each group of that many spaces with one tab. */
export declare function normalizeIndentToTabs(code: string): string;
export declare function normalizeNodePath(input: string): string;
export declare function sanitizeResPath(raw: unknown, field: string): string;
/**
 * Unified GDScript value serializer.
 *
 * Converts a JS value into a GDScript expression string.
 * Used by scene.ts, ui-tools.ts, animation-shared.ts, and animation-ops.ts.
 *
 * Returns a bare GDScript literal / constructor call:
 *   null, true/false, 42, "string", Vector2(1,2), Vector3(1,2,3), Color(1,0,0,1)
 *
 * Throws on unsupported types (objects with unexpected keys, arbitrary arrays, etc.).
 * Throws on NaN / Infinity values.
 *
 * @param v         The value to serialize.
 * @param trackType Optional animation track type hint (e.g. 'rotation_3d' → Quaternion).
 */
export declare function valueToGd(v: unknown, trackType?: string): string;