@clevertree/md2ast

Markdown → JSON AST for CleverScript / Relay hosts (WASM, JNI, Rust).

Architecture

graph TD
    subgraph "Input"
        MD[Markdown Source]
    end

    subgraph "Parser Core (Rust)"
        CM[pulldown-cmark]
        HTML[HTML Tag Filter]
        AST[AST Generator]
    end

    subgraph "Output"
        JSON[JSON AST]
    end

    MD --> CM
    CM --> HTML
    HTML --> AST
    AST --> JSON

This library parses Markdown (including GitHub Flavored Markdown) and converts it into a JSON-serializable Abstract Syntax Tree (AST) for CleverScript, Relay, React, or other JSX-like runtimes.

Features

• Fast: Powered by Rust and pulldown-cmark.
• Cross-Platform: WASM for Web, JNI for Android.
• HTML Support: Supports nested HTML tags within Markdown.
• Custom Tag Filtering: Only renders HTML tags explicitly allowed in allowed_tags.
• GFM Support: Tables, task lists, and strikethrough enabled by default.

Installation

NPM (Web)

npm install @clevertree/md2ast

Maven (Android)

Add to your build.gradle:

dependencies {
    implementation 'com.clevertree:md2ast:1.0.0'
}

Cargo (Rust)

[dependencies]
md2ast = "1.0.0"

Usage

Web (WASM)

import init, { parse_markdown } from '@clevertree/md2ast';

async function run() {
    await init();
    const markdown = "# Hello\n<CustomBox title=\"Alert\">Content</CustomBox>";
    const options = {
        allowed_tags: ["CustomBox"]
    };
    const ast = parse_markdown(markdown, options);
    console.log(ast);
}

Android (Kotlin)

val astJson = MarkdownParser.parse(markdown, allowedTags = listOf("CustomBox"))

AST Structure

The output is a list of nodes:

[
  {
    "type": "element",
    "tag": "h1",
    "props": {},
    "children": [
      { "type": "text", "content": "Hello" }
    ]
  }
]

License

MIT OR Apache-2.0