Newlines in template literals replaced by literal \n

[lexanth]

Describe the bug
swc is transpiling line breaks to \n characters. This is normally fine, but if we're going to use the raw string (either String.raw tagged template literal or the .raw in the first argument to custom tagged template literal), these are different.

Input code

console.log(String.raw`a
b
c
`);
console.log(String.raw`a\nb\nc\n`);

Gets transpiled to

console.log(String.raw`a\nb\nc\n`);
console.log(String.raw`a\nb\nc\n`);

Whereas babel retains the original line breaks (the code can run in modern node unchanged) - Babel REPL

Config

{
  "sourceMaps": true,
  "jsc": {
    "parser": {
      "syntax": "typescript",
      "tsx": true,
      "dynamicImport": true
    },
    "transform": {
      "react": {
        "runtime": "automatic",
        "refresh": true
      },
      "hidden": {
        "jest": true
      }
    }
  },
  "module": {
    "type": "commonjs"
  },
  "env": {
    "coreJs": 3,
    "mode": "usage"
  }
}

browserslist here is node 14
(this is in jest, but I've reproduced the same with the swc cli)

Expected behavior
Retain the line breaks as line breaks

Running the original code would print

a
b
c

a\nb\nc\n

Running the code post transpilation would print

a\nb\nc\n
a\nb\nc\n

Version
The version of @swc/core: 1.2.55

Additional context
Add any other context about the problem here.

[swc-bot]

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