rehype-custom-component/dist/index.mjs

Rehype plugin to transform custom components into to handle with React

// src/index.ts
import { visit } from "unist-util-visit";
function rehypeCustomComponent({
  tagName = "custom-component",
  matchName = "CustomComponent"
} = {}) {
  const REGEX = /<MATCH\s+([^>]*?)\/>/;
  const CC_REGEX = new RegExp(REGEX.source.replace("MATCH", matchName), "gs");
  const processTextNode = (text) => {
    const nodes = [];
    let lastIndex = 0;
    for (const match of text.matchAll(CC_REGEX)) {
      const [fullMatch, attributesString] = match;
      const startIndex = match.index ?? 0;
      if (startIndex > lastIndex) {
        nodes.push({
          type: "text",
          value: text.slice(lastIndex, startIndex)
        });
      }
      const properties = [...attributesString.matchAll(/(\w+)(?:=(?:"([^"]*)"|([^\s>]+)))?/g)].reduce((acc, [, attrName, quotedValue, unquotedValue]) => ({
        ...acc,
        [attrName]: quotedValue ?? unquotedValue ?? true
      }), {});
      nodes.push({
        type: "element",
        tagName,
        properties,
        children: []
      });
      lastIndex = startIndex + fullMatch.length;
    }
    if (lastIndex < text.length) {
      nodes.push({
        type: "text",
        value: text.slice(lastIndex)
      });
    }
    return nodes.length > 0 ? nodes : [{ type: "text", value: text }];
  };
  const onVisit = (node, index, parent) => {
    if (!parent || index === void 0 || !("children" in parent)) return;
    const processed = processTextNode(node.value);
    if (processed.length > 1 || processed[0]?.type === "element") {
      parent.children.splice(index, 1, ...processed);
    }
  };
  return (tree) => {
    visit(tree, "text", onVisit);
    visit(tree, "raw", onVisit);
  };
}
export {
  rehypeCustomComponent as default
};