minified flag incorrectly transforms SingleEscapeCharacters

[HyeonuPark]

It prints additional backslash

Input Code

const babel = require('babel-core')
console.log(babel.transform('"foo\\n\\t\\r"', {minified: true}).code)

Expected Behavior

"foo\n\t\r"

Current Behavior

"foo\\n\\t\\r"

Your Environment

software	version
Babel	6.17.0
node	6.1.0
npm	3.10.8
Operating System	Linux Mint 17.3

[DrewML]

I think this may have regressed here in the getPossibleRaw method. Commenting out the check for this.format.minified that was added in that commit fixes the bug.

[aaronang]

I have done some investigation and it seems that the current library that we are using does not have any support for not escaping special characters, e.g. \n, \r, \t, etc.

Have a look here: mathiasbynens/jsesc#20.