Trim string so it is only inside a code block [closed]

Pretty simple question, how would I go about cutting the code block identifier out of a string?

These strings should all have the same result:

const str1 = 'Just some example text'
const str2 = '``` Just some example text```'
const str3 = '```js Just some example text```'
const str4 = '```java Just some example text```'
const str5 = '```ts Just some example text'
const result = 'Just some example text'

There were a few answers floating around, but none of them seemed to deal with language identifiers or relied heavily on newlines.

Answer

The proper answer is to use a Markdown parser.

But we can also bung something together with a regex.

(?:(```)([a-zA-Z]+)?s+)?(.+)1  

Try it

Pulling it apart…

(?:
  (```)                 # start of code, $1
  ([a-zA-Z]+)?  # code tag, maybe, $2
  s+                 # always a space
)?                   # that's all optional
(.+)                # the content
1                  # ends with ``` or blank

$1 is the code indicator, $2 is the tag, $3 is the content