import type { Block, FuncParameter } from 'tinyest';
export interface RawMetadataV1 {
    v: 1;
    name: string;
    ast: {
        params: FuncParameter[];
        body: Block;
        externalNames: string[];
    };
    externals: Record<string, unknown> | (() => Record<string, unknown>);
}
export interface RawMetadataV2 {
    v: 2;
    name: string;
    ast: {
        params: FuncParameter[];
        body: Block;
    };
    externals: {
        [key: string]: () => unknown;
    };
}
/**
 * Holds all function info collected by typegpu-unplugin
 */
export type RawMetadata = RawMetadataV1 | RawMetadataV2;
/**
 * Holds normalized function metadata required for WGSL generation
 */
export interface Metadata {
    ast: {
        params: FuncParameter[];
        body: Block;
    };
    externals: () => Record<string, unknown>;
}
export declare function normalizeMetadata(meta: RawMetadata): Metadata;