@vivliostyle/vfm/lib/plugins/replace.js

Custom Markdown syntax specialized in book authoring.

import findAndReplace from 'hast-util-find-and-replace';
import { h } from 'hastscript';
export function replace({ rules } = {}) {
    if (!rules || rules.length == 0)
        return;
    const search = rules.map((rule) => [
        rule.test,
        (...result) => rule.match(result, h),
    ]);
    return (tree) => findAndReplace(tree, search);
}