Auto loading of languages breaks mutation testing elements

[nicojs]

When the mutation-testing-elements report loads a language it does not have build-in syntax highlighting for, it will fall back on the autoloader. It will actually download the language highlighting on the spot. This works with the prism autoloader plugin.

However, there is currently no way to register a callback for when syntax highlighting is done. This is vital since we need to attach mutants to the properties of the mutant-components here:

mutation-testing-elements/packages/mutation-testing-elements/src/components/mutation-test-report-file/index.ts

Line 117 in 20b3eab

this.forEachMutantComponent(mutantComponent => {

The result is that the mutants will not be bound to the mutation-test-report-mutant elements which in turn makes the mutants invisible

See PrismJS/prism#2275

Thanks to @theofidry for pointing this out to me in infection/infection#1149

As a workaround, we should disable autoloading and just add languages whenever we want to support one. We'll be adding php shortly 🤝

[nicojs]

Fixed with the pr

[theofidry]

👍