export type Keywords = keyof typeof KEYWORDS_TYPES;
export type KeywordType = 'Call' | 'Modifier' | 'Append' | 'Block';
export declare function isKeyword(word: string): word is Keywords;
export declare function isKeyword(word: string, type: KeywordType): boolean;
/**
 * This includes the full list of keywords currently in use in the template
 * language, and where their valid usages are.
 */
export declare const KEYWORDS_TYPES: {
    action: ("Call" | "Modifier")[];
    component: ("Block" | "Call" | "Append")[];
    debugger: "Append"[];
    'each-in': "Block"[];
    each: "Block"[];
    'has-block-params': ("Call" | "Append")[];
    'has-block': ("Call" | "Append")[];
    helper: ("Call" | "Append")[];
    if: ("Block" | "Call" | "Append")[];
    'in-element': "Block"[];
    let: "Block"[];
    log: ("Call" | "Append")[];
    modifier: ("Call" | "Modifier")[];
    mount: "Append"[];
    mut: ("Call" | "Append")[];
    outlet: "Append"[];
    readonly: ("Call" | "Append")[];
    unbound: ("Call" | "Append")[];
    unless: ("Block" | "Call" | "Append")[];
    yield: "Append"[];
};