Produces invalid JSON when keys/values contain escaped double quotes

[Mesoptier]

For example, consider the following JSON:

{ "this \"key\" is valid": "this \"value\" is valid" }

With limit: 0, this would result in the following JS:

module.exports = JSON.parse(`{"this \"key\" is valid":"this \"value\" is valid"}`)

However, trying to evaluate this JS results in a syntax error:

Uncaught SyntaxError: Unexpected token k in JSON at position 8
    at JSON.parse (<anonymous>)
    at <anonymous>:1:6

The error is correct. Since the quotes are only escaped once, they "appear" escaped to the template string but unescaped to the JSON parser, resulting in a syntax error.

Properly escaped it would look something like this:

module.exports = JSON.parse('{"this \\"key\\" is valid":"this \\"value\\" is valid"}')

I will open a pull request to fix this issue and add test cases.