export type Attrs<T> = {
    [K in keyof T]: TypeDef<T[K]>;
};
export type Alignment = 1 | 2 | 4 | 8;
export type LayoutElement<T> = {
    type: "padding";
    byteLength: number;
} | {
    type: "field";
    name: string;
    offset: number;
    typedef: Attrs<T>[keyof Attrs<T>];
};
export type Struct<T> = {
    type: "struct";
    byteLength: number;
    byteAlign: Alignment;
    layout: LayoutElement<T>[];
};
export type Num<T> = {
    type: "i32" | "f32" | "f64" | "uint8" | "uint16" | "uint32" | "int16" | "int32";
    byteAlign: Alignment;
    byteLength: number;
    T?: T;
};
export type Arr<T> = {
    type: "array";
    element: TypeDef<T>;
    length: number;
    byteLength: number;
    byteAlign: Alignment;
};
export type TypeDef<T> = Num<T> | Struct<T> | Arr<T>;
export declare function array<T>(element: TypeDef<T>, length: number): Arr<T[]>;
export declare const f32: () => TypeDef<number>;
export declare const int32: () => TypeDef<number>;
export declare const uint8: () => TypeDef<number>;
export declare const uint16: () => TypeDef<number>;
export declare const uint32: () => TypeDef<number>;
export declare function struct<T extends object>(attrs: Attrs<T>): Struct<T>;
export declare function offsets<T extends object>(def: Struct<T>): {
    [K in keyof T]: number;
};
export declare function pad(offset: number, alignment: number): number;