Function isNode

packages/tools/doctest/src/Transform.ts:41–45

(value: unknown)

}

const isNode = (value: unknown): value is Node =>
  typeof value === "object" && value !== null &&
  "type" in value && typeof value.type === "string" &&
  "start" in value && typeof value.start === "number" &&
  "end" in value && typeof value.end === "number"

const isStatement = (node: Node): boolean => node.type.endsWith("Statement") || statementTypes.has(node.type)