Quick Start

Create a highlighter

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package main
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import (
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  "context"
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  "fmt"
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  "log"
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  "github.com/frostybee/nuri"
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  "github.com/frostybee/nuri/bundle/core"
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)
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func main() {
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  ctx := context.Background()
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  h, err := nuri.New(ctx, nuri.WithFS(core.FS()))
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  if err != nil {
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    log.Fatal(err)
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  }
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  defer h.Close(ctx)
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  html, err := h.CodeToHTML(ctx, `fmt.Println("hello, world")`, nuri.CodeToHTMLOptions{
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    Lang:  "go",
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    Theme: "github-dark",
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  })
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  if err != nil {
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    log.Fatal(err)
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  }
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  fmt.Println(html)
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}

nuri.New() compiles the WASM engine and builds the grammar/theme registry. h.Close(ctx) releases WASM resources; always defer it.

Output

The call produces a self-contained <pre> element with inline color styles:

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<pre class="nuri github-dark" style="background-color:#24292e;color:#e1e4e8" tabindex="0">
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  <code>
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    <span class="line">
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      <span style="color:#E1E4E8">fmt.</span>
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      <span style="color:#79B8FF">Println</span>
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      <span style="color:#E1E4E8">(</span>
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      <span style="color:#9ECBFF">"hello, world"</span>
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      <span style="color:#E1E4E8">)</span>
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    </span>
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  </code>
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</pre>

Each token gets a <span> with the resolved color from the theme. Lines are wrapped in <span class="line">.

Next steps

Using Themes to select and switch between themes
Output Formats for ANSI, SVG, JSON, plain text, and raw tokens
Transformers for line highlighting, diff annotations, and custom hooks