import { type Metadata, type RawMetadata } from './normalizeMetadata.ts';
/**
 * Don't use or you WILL get fired from your job.
 *
 * The information that this type describes is additional
 * properties that we add onto `globalThis`, used by tools
 * like `unplugin-typegpu` or our test suite.
 *
 * @internal
 */
export type INTERNAL_GlobalExt = typeof globalThis & {
    __TYPEGPU_VERSION__?: string;
    __TYPEGPU_META__?: WeakMap<object, RawMetadata>;
    __TYPEGPU_AUTONAME__?: <T>(exp: T, label: string) => T;
    __TYPEGPU_MEASURE_PERF__?: boolean | undefined;
    __TYPEGPU_PERF_RECORDS__?: Map<string, unknown[]>;
};
/**
 * Can be assigned a name. Not to be confused with just having a name.
 * The `$name` function should use `setName` to rename the object itself,
 * even if `$getNameForward` symbol is present.
 */
export interface TgpuNamable {
    $name(label: string): this;
}
export declare function isNamable(value: unknown): value is TgpuNamable;
export declare function getName(definition: unknown): string | undefined;
export declare function setName(definition: object, name: string): void;
/**
 * Retrieves normalized (non-raw) function metadata.
 * If `globalExt.__TYPEGPU_META__` contains raw metadata for the function,
 * it is normalized, and then deleted to avoid unnecessary re-normalization.
 */
export declare function getFunctionMetadata(definition: object): Metadata | undefined;
/**
 * AST's are given to functions with a 'use gpu' directive, which this function checks for.
 */
export declare function hasTinyestMetadata(value: unknown): value is (...args: never[]) => unknown;
/**
 * Performance measurements are only enabled in dev & test environments for now
 */
export declare const PERF: {
    readonly enabled: boolean;
    record(name: string, data: unknown): void;
} | undefined;