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    Create a remark Plugin to Modify Markdown Headings


    remark is a pluggable markdown parser and compiler. It's part of the unified so it offers a wide array of libraries to make writing plugins with the markdown AST (MDAST) more developer friendly.

    We'll use unist-util-visit to traverse heading nodes in a Markdown file and prefix all h1s with the text "BREAKING" using a TDD workflow.