/**
 * @packageDocumentation
 * @module Units
 */
import { ViewOf } from "./utils";
import { StyleContext } from "./latex";
/**
 * String literal parser for LaTeX literals (avoids the need for quoting backslash).
 */
export declare const TeX: (template: TemplateStringsArray, ...substitutions: any[]) => string;
/**
 * Our enumerated primitive units.
 */
export declare enum Primitive {
    time = "time",
    mass = "mass",
    length = "length",
    cycles = "cycles",
    angle = "angle",
    solidAngle = "solidAngle",
    current = "current",
    temperature = "temperature",
    amount = "amount",
    candela = "candela",
    money = "money"
}
export declare const primitiveKeys: Primitive[];
/**
 * Comparison predicate for primitive units to allow sorting them into a
 * canonical total order.
 *
 * @param a
 * @param b
 */
export declare const orderUnits: (a: Primitive, b: Primitive) => 0 | 1 | -1;
/**
 * Our supported exponents. A finite list of exponents allows TypeScript to
 * automatically type exponents as numeric literal types.
 */
export declare type Exponent = -9 | -8 | -7 | -6 | -5 | -4 | -3 | -2 | -1 | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9;
/**
 * An object of primitive UNIT: Exponent pairs that uniquely describes each type.
 */
export declare type PUnitTerms = {
    [u in keyof typeof Primitive]?: Exponent;
};
export interface PrimitiveUnitAttributes {
    name: string;
    symbol: string;
    varName: string;
    absolute?: boolean;
    si_base?: boolean;
    names?: string[];
    [k: string]: any;
}
/**
 * Marker interface indicating primitive standard non-prefixed SI-compatible units.
 */
export interface PrimitiveSI {
    name?: string;
}
export interface UnitAttributes extends Partial<PrimitiveUnitAttributes> {
    tex?: string;
    scale?: number;
    offset?: number;
}
/**
 * The public interface to all units and aliases.
 */
export interface IUnitBase<T extends PUnitTerms = PUnitTerms> {
    /**
     * Unique lookup key for this type.
     */
    readonly key: T;
    readonly id: string;
    readonly name: string;
    readonly names: string[];
    readonly symbol?: string;
    readonly varName?: string;
    readonly attributes: UnitAttributes;
    readonly tex: string;
    toTex(ctx?: StyleContext): string;
    readonly html: Element & ViewOf<IUnitBase<T>>;
    toHtml(block?: boolean, ctx?: StyleContext): Element & ViewOf<IUnitBase>;
}
/**
 * Turn the structured UnitTerms key into a string to do the lookup for unique types.
 * @param key
 */
export declare const makeLookupKey: (key: PUnitTerms) => string;
/**
 * Marker interface indicating standard non-prefixed SI-compatible units.
 */
export interface SI {
}
/**
 * Base class for all units (and aliases).
 */
export declare abstract class UnitBase<T extends PUnitTerms> implements IUnitBase<T> {
    readonly key: T;
    readonly symbol?: string;
    readonly attributes: UnitAttributes;
    private id_?;
    private tex_?;
    readonly names: string[];
    protected constructor(key: T, attributes: UnitAttributes);
    toTex(ctx?: StyleContext): string;
    get tex(): string;
    get id(): string;
    abstract readonly name: string;
    get html(): Element & ViewOf<this>;
    toHtml(block?: boolean, ctx?: StyleContext): Element & ViewOf<this>;
    toString(): string;
}
/**
 * Our primitive (non-decomposable) units.
 */
declare class PrimitiveUnit<U extends Primitive> extends UnitBase<{
    [K in U]: 1;
}> implements SI, PrimitiveSI {
    readonly symbol: string;
    readonly name: string;
    readonly varName?: string;
    readonly unit: Primitive;
    constructor(u: U, name: string, symbol: string, varName?: string, attributes?: UnitAttributes);
}
/**
 * Type of our [[PRIMITIVE_MAP]] map. This provides one key/value entry for each primitive,
 * indexed by the UNIT enum.
 */
export declare type PrimitiveMap = {
    [k in keyof typeof Primitive]: PrimitiveUnit<(typeof Primitive)[k]>;
};
/**
 * A map from primitive name to its Unit instance.
 */
export declare const PRIMITIVE_MAP: Readonly<PrimitiveMap>;
/**
 * Namespace for primitives only; merged into the U namespace.
 * @internal
 */
export declare namespace P {
    const mass: IUnitBase<{
        mass: 1;
    }>;
    type mass = typeof mass;
    const time: IUnitBase<{
        time: 1;
    }>;
    type time = typeof time;
    const length: IUnitBase<{
        length: 1;
    }>;
    type length = typeof length;
    const angle: IUnitBase<{
        angle: 1;
    }>;
    type angle = typeof angle;
    const solidAngle: IUnitBase<{
        solidAngle: 1;
    }>;
    type solidAngle = typeof solidAngle;
    const amount: IUnitBase<{
        amount: 1;
    }>;
    type amount = typeof amount;
    const cycles: IUnitBase<{
        cycles: 1;
    }>;
    type cycles = typeof cycles;
    const current: IUnitBase<{
        current: 1;
    }>;
    type current = typeof current;
    const temperature: IUnitBase<{
        temperature: 1;
    }>;
    type temperature = typeof temperature;
    const candela: IUnitBase<{
        candela: 1;
    }>;
    type candela = typeof candela;
    const money: IUnitBase<{
        money: 1;
    }>;
}
export {};
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