src/language-js/printer-estree.js/nodeStr
function nodeStr(node, options, isFlowOrTypeScriptDirectiveLiteral) {
  const raw = rawText(node);
  const isDirectiveLiteral =
    isFlowOrTypeScriptDirectiveLiteral || node.type === "DirectiveLiteral";
  return privateUtil.printString(raw, options, isDirectiveLiteral);
}