Code example

const tag = (strings, ...args) => {
  return strings.raw
};

tag`begin${'first'}middle${'second'}end`;

Expected output is ["begin", "middle", "end"] (with args[0] = "first" and args[1] = "middle")
But current output is ["", ""] (with args[0] = "beginfirstmiddlesecondend")
This is because code is obfuscating into this (with simplest settings):

const tag = (a, ...b) => {
    return a['raw'];
};
tag`${ 'begin' + 'first' + 'middle' + 'second' + 'end' }`;

I'm using tag functions and need to distinguish parts of template strings, but with such behavior it doesn't work
Sorry for bad English