Code Line Highlighting Extension

This extension allows you to highlight specific lines in code blocks within your Markdown files.

Usage

To highlight specific lines in code blocks, you can use the following syntax in your Markdown files:

```js {.h:1,4-6,11}
const dom = ctx.view.getViewDom()
const codeBlocks = dom?.querySelectorAll('pre > code')

const selectors = new Set<string>()

codeBlocks?.forEach((codeBlock) => {
    codeBlock.classList.forEach((className) => {
    const match = className.match(classNameReg)
    if (match) {
        const range = match[1]
        const lines = rangeParser(range)
        const styleClassName = className.replace(/([:.,])/g, '\\$1')
        lines.forEach((line) => {
            if (line > 0) {
                selectors.add(`pre > code.${styleClassName} table.hljs-ln tr:nth-child(${line}) > *`)
            }
        })
    }
})
```

This will highlight lines 1, 4 to 6, and 11 in the code block.

You Can also use the revealjs style to highlight specific lines:

```js {data-line-numbers="1,3-5,6"}
const hello = 'Hello, World!'
const world = 'World, Hello!'
console.log(hello, world)

const greeting = `${hello} ${world}`
console.log(greeting)

console.log(greeting.toUpperCase())
```

This feature uses the parse-numeric-range library and you can find more syntax on their project details.