code: function templateLiteralToStringConcat(node, sourceCode) {
      const ss = []
      node.quasis.forEach((q, i) => {
          const value = q.value.cooked
          if (value) {
              ss.push(JSON.stringify(value))
          }
  
          if (i < node.expressions.length) {
              const e = node.expressions[i]
              const text = sourceCode.getText(e)
              ss.push(text)
          }
      })
      if (!ss.length || !isStringLiteralCode(ss[0])) {
          ss.unshift(`""`)
      }
      return ss.join("+")
  }
docs: Transform template literal to string concatenation.
  @param  {ASTNode} node TemplateLiteral node.(not within TaggedTemplateExpression)
  @param  {SourceCode} sourceCode SourceCode
  @returns {string} After transformation