import { YAML } from "https://deno.land/x/aether@v0.0.3/deps.ts";
const { isCollection } = YAML.CST;
type
(token: Token | null | undefined) => token is BlockMap | BlockSequence | FlowCollection
import { YAML } from "https://deno.land/x/aether@v0.0.3/deps.ts";
const { isCollection } = YAML.CST;