import { types as t } from "@marko/compiler";
import { type ForType } from "./branch-tag";
export declare function assertNoSpreadAttrs(tag: t.NodePath<t.MarkoTag>): void;
export declare function assertOnlyValueAttr(tag: t.NodePath<t.MarkoTag>, required: true, change?: boolean, hint?: (attr: t.MarkoAttribute) => string | undefined): t.MarkoAttribute;
export declare function assertOnlyValueAttr(tag: t.NodePath<t.MarkoTag>, required?: boolean, change?: boolean, hint?: (attr: t.MarkoAttribute) => string | undefined): t.MarkoAttribute | undefined;
export declare function assertHasVar(tag: t.NodePath<t.MarkoTag>, hint?: string | ((tag: t.NodePath<t.MarkoTag>) => string)): void;
export declare function assertIdentifierVar(tag: t.NodePath<t.MarkoTag>): void;
export declare function assertNoTagVarMutation(tag: t.NodePath<t.MarkoTag>): void;
export declare function assertHasBody(tag: t.NodePath<t.MarkoTag>): void;
export declare function assertNoBodyContent(tag: t.NodePath<t.MarkoTag>): void;
export declare function buildAttrsError(tag: t.NodePath<t.MarkoTag>, attrs: t.MarkoTag["attributes"], msg: string): Error;
export declare function buildAttrNameError(tag: t.NodePath<t.MarkoTag>, attr: t.MarkoAttribute, msg: string): Error;
/** The loop a `<for>` tag's attributes run, which it requires. */
export declare function assertForType(tag: t.NodePath<t.MarkoTag>): ForType;
/** The attributes a loop of `type` takes, besides `by=`. */
export declare function getForAttrs(type: ForType): string[];
/** Throws for a param that a loop of `type` never supplies. */
export declare function assertForParams(tag: t.NodePath<t.MarkoTag>, type: ForType): void;