highlightjs-elo

Elo language grammar for highlight.js.

Usage with markdown-it

const markdownIt = require('markdown-it');
const hljs = require('highlight.js/lib/core');
const elo = require('@enspirit/highlightjs-elo');

hljs.registerLanguage('elo', elo);

const md = markdownIt({
  highlight: function (str, lang) {
    if (lang === 'elo' && hljs.getLanguage('elo')) {
      return hljs.highlight(str, { language: 'elo' }).value;
    }
    return '';
  }
});

Then in your markdown files:

```elo
let x = 42 in
  if x > 0 then 'positive'
  else 'negative'
```

Usage with highlight.js (browser)

<link rel="stylesheet" href="path/to/highlight.js/styles/default.min.css">
<script src="path/to/highlight.js/highlight.min.js"></script>
<script src="path/to/elo.js"></script>
<script>
  hljs.registerLanguage('elo', window.hljsDefineElo);
  hljs.highlightAll();
</script>

Supported syntax

• Keywords: let, in, if, then, else, fn, guard, check, and, or, not
• Literals: booleans, null, numbers, strings (single-quoted)
• Date/datetime literals: D2024-01-15, D2024-01-15T10:30:00Z
• Duration literals: P1D, PT1H30M
• Temporal keywords: NOW, TODAY, TOMORROW, YESTERDAY, BOT, EOT, etc.
• Type selectors: Int, Float, Bool, String, Date, Datetime, etc.
• Standard library functions: map, filter, upper, length, sum, etc.
• Operators: |>, ~>, .., ..., comparisons, arithmetic
• Data paths: .field.nested
• Comments: # line comment