Allow to pass Prism instance

[Sourabh Verma]

Hi

We use this library to add language support to a custom version of Prism.

Right now we're using refractor/lang/<lang> methods directly but that does't work for languages that use .register method defined on Refractor instance.

It'd be great if there was a way to pass Prism instance so .register works.

Unless this is already possible, I can work on this, if you are open to merging in something like this.

[Titus]

refractor inherits from Prism, so you should be able to change the instance to overwrite methods.

I’m not sure how exactly you’d want to implement this? What does this solve that you can’t already do (each syntax is a function that is given an instance, and if it has dependencies, then it calls register on that instance with them).

[Sourabh Verma]

I don't import Prism this way var Prism = require('prismjs/components/prism-core')
prismjs/components/prism-core doesn't exist

[Titus]

What? I’m sorry, I don’t understand.

[Sourabh Verma]

Nevermind. Changing the prototype worked

Instead of

import cppLang from 'refractor/lang/cpp';
cppLang(Prism);

Which threw

Unhandled JS Exception: TypeError: Prism.register is not a function. (In 'Prism.register(refractorC)', 'Prism.register' is undefined)

I changed it to

Object.setPrototypeOf(refractor, Prism);
refractor.register(cppLang);