Markdown indexed block

This lib will annotate every block in the markdown file with site wise unique identifier and it can generate set of html based on the HTML

It introduce two new remark node type

• IndexedBlock
• IndexedBlockChildren

The flow

• remark-indexed-block: Generate new markdown with indexed block syntax
• mdast-utils-to-hast(remark-rehype): We transfer custom node type to hast, and then transfer to HTML
  • We could use remark-rehype-options.handler to handle custom node

Normal Logic

1. It will use the file's relative file path and uuidv5 to form a unique id. For example, if you have a file's path is /src/data/blog/hi-i-am-indexed-block(relative to the root of the project.) It will tokenize this path and generate id.
2. It will use the first 6 character as the prefix.
3. The suffix is depend on the order of the section.

# Header 1

## Sub Header 1

hi, I am a block!

Every unique representation will be a block, take above markdown for example, Header 1, Sub Header 1 and the hi, I am a block! are three separated blocks. The suffix will be determined by their order. If the calculated prefix is r43erf the overall index of Header 1 will be r43erf-1

Worth notice Caveat

• Because remark is a esm module, we have to keep an eye one that:

  • We use tsc to build the package and imply that we are using esm by type config in package.json type: "module"
  • When testing the plugin, we run the script with node, but node is running with CommonJS by default, you need to imply that you want to run with esm by this flag --experimental-specifier-resolution=node

• unified.parse will generate a syntax tree, but does not run plugins/transformers.

  • ref: https://github.com/unifiedjs/unified/discussions/162
  • If you want unified to run plugin you could write something like this

  const ast = unified().use(remarkParse).parse(buffer);
  const transformedAst = await unified().use(remarkIndexedBlock).run(ast);

• You could declare custom node type

    type IndexedBlock = {
      type: "IndexedBlock";
      id: string;
      children: Content[];
    };
  
    declare module "mdast" {
      interface BlockContentMap {
        indexedBlock: IndexedBlock;
      }
    }