`"` compiles to `\"` which prevent using npm:regex library

[hackwaly]

@unboxed
type interpolation =
  | S(string)
  | R(RegExp.t)

@module("regex") @taggedTemplate
external regex: (array<string>, array<interpolation>) => RegExp.t = "regex"

Console.log(regex`"`) // This compiles to "console.log(regex`\"`)" which causes "Invalid regular expression: invalid escaped character for Unicode pattern: /\"/v"

[zth]

Was this not discussed recently? @tsnobip ?

[tsnobip]

this is very annoying, basically today tagged templates use the same code path as regular string interpolation which transforms it to double quoted strings, my recommendation would be to have a dedicated AST node and compile string interpolations and tagged templates externals to the exact same JS code.

@zth this is indeed a duplicate of #7196 but in that case, turning newlines into \n was not really an issue in itself because they're semantically the same in JS, in this case it's not.