yaml parsing does not work

[kyeotic]

I am able to successfully parse and highlight other languages, but yaml does not parse correctly. It parses "successfully", but the output is missing important decoration. The most visible issue is that key's are not marked as such.

Example Markdown (Ignore the slash, it is needed to stop github from breaking here, but the actual examples are valid)

\```yaml
name: test
checks:
    prop: "a"
    list:
        - first
        - second
\```

Expected Output

Here is an example from the prism playground. The output has keys marked with a key class

Actual Output

However, this library does not apply that class.

Example Code:

import { serve } from "https://deno.land/std@0.177.0/http/server.ts";
import { default as html } from "https://deno.land/x/htm@0.1.3/html.tsx";
import { render } from "https://deno.land/x/gfm/mod.ts";
import 'https://esm.sh/prismjs@1.27.0/components/prism-yaml'


const markdown = `
# Demo

A YAML parsing Test

\`\`\`yaml
name: test
checks:
    prop: "a"
    list:
        - first
        - second
\`\`\`
`;

serve((req: Request) => html(render(markdown)));

Links:

• Deno Playground
• Playground output

Notice the missing key class. Without this, the highlighting is missing nearly all colors.