AstKeyframesRule

interface AstKeyframesRule {
    "[ROOT]"?: AstStyleSheet | null;
    chi: (AstComment | AstDeclaration | AstInvalidDeclaration)[];
    errors?: ErrorDescription[];
    optimized?: OptimizedSelector;
    parent?: any;
    raw?: RawSelectorTokens;
    sel: string;
    state?: any;
    tokens?: Token[];
    typ: KeyframesRuleNodeType;
    [key: number]: string | undefined;
}