Function isValidSyntax

lib/internal/repl/utils.js:758–776

(input)

const startsWithBraceRegExp = /^\s*{/;
const endsWithSemicolonRegExp = /;\s*$/;
function isValidSyntax(input) {
  try {
    AcornParser.parse(input, {
      ecmaVersion: 'latest',
      allowAwaitOutsideFunction: true,
    });
    return true;
  } catch {
    try {
      AcornParser.parse(`_=${input}`, {
        ecmaVersion: 'latest',
        allowAwaitOutsideFunction: true,
      });
      return true;
    } catch {
      return false;
    }
  }
}

/**
 * Checks if some provided code represents an object literal.