/**
 * The CSS a `look:` value lowers to: the condition terms a Look condition
 * decomposes into, the token that names one lowered rule, and the selector,
 * media query and declaration that rule is written as.
 *
 * D115 P4 R3d: these are pure functions over the Look AST and the module's
 * static values — no emitter state reaches them — so both `emit/look.ts` (the
 * stylesheet) and `emit/jsx.ts` (an inline `look:` attribute) read the same
 * lowering rather than two spellings of it.
 */
import type { Expression } from "@velarscript/compiler/extension";
import { type LookStaticValue } from "../look-static.ts";
export interface LookStaticAtom {
    readonly kind: "hook" | "media" | "scheme" | "motion";
    readonly name: string;
    readonly operator?: "<" | "<=" | ">" | ">=";
    readonly value?: string;
    readonly negated: boolean;
}
export interface LookRuntimeAtom {
    readonly expression: Expression;
    readonly negated: boolean;
}
export interface LookConditionTerm {
    readonly staticAtoms: readonly LookStaticAtom[];
    readonly runtimeAtoms: readonly LookRuntimeAtom[];
}
export interface LookRule {
    readonly token: string;
    readonly property: string;
    readonly target: string;
    readonly staticAtoms: readonly LookStaticAtom[];
    /** Declaration order of the token's first appearance, the last tie-break. */
    readonly sequence: number;
}
export declare const EMPTY_LOOK_TERM: LookConditionTerm;
export declare function lookConditionTerms(expression: Expression, negated?: boolean, staticValues?: ReadonlyMap<string, LookStaticValue>): readonly LookConditionTerm[];
export declare function combineLookTerms(left: readonly LookConditionTerm[], right: readonly LookConditionTerm[]): readonly LookConditionTerm[];
export declare function lookToken(atoms: readonly LookStaticAtom[], target: string, property: string): string;
export declare function lookConditionDepth(atoms: readonly LookStaticAtom[]): number;
export declare function lookDeclaration(token: string, property: string): string;
export declare function lookMediaQuery(atom: LookStaticAtom): string;
export declare function lookSelectors(base: string, atoms: readonly LookStaticAtom[], target: string): readonly string[];
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