Function getLiteralString

book/tiny-ts-parser.ts:530–533

(node: p.TSESTree.Expression)

}

function getLiteralString(node: p.TSESTree.Expression) {
  if (node.type !== "Literal" || typeof node.value !== "string") error("", node);
  return node.value;
}

function getTypeProp(member: p.TSESTree.TypeElement) {
  if (member.type !== "TSPropertySignature" || member.key.type !== "Identifier" || !member.typeAnnotation) {