ValidationRule

type ValidationRule =
  | ValidationRuleName
  | {
  kind: "and";
  rules: ValidationRule[];
}
  | {
  kind: "or";
  rules: ValidationRule[];
}
  | {
  kind: "not";
  rule: ValidationRule;
}
  | {
  kind: "predicate";
  name?: string;
  predicate: (ctx) => boolean;
}
  | {
  kind: "markActiveInSelection";
  name: string;
}
  | {
  kind: "blockTypeIs";
  name: string;
};

Defined in: validation.ts:13