const grab = function()

in tasks/migrate.ts [28:183]

• 105 lines of code
• 20 McCabe index (conditional complexity)

const grab = function() {
  for (const chunk of fg.sync("docs/**/*.md", {
    cwd: "./",
  })) {
    let frontMatterToWrite = "";
    let destination = chunk.slice(5); // slice off docs/
    let file = fs.readFileSync(chunk).toString();
    if (chunk.includes("fragments")) {
      destination = destination.split("fragments/").join("");
      destination = destination.split("/fragments").join("");
      destination = "src/fragments/" + destination + "x";
    } else {
      const frontMatter = file.split("---")[1].split("\n");
      file = file
        .split("---")
        .slice(2)
        .join("---");
      let filterKey = "";
      frontMatterToWrite += "export const meta = {\n";
      for (const line of frontMatter) {
        const [key, value] = line.split(": ");
        if (typeof key === "undefined" || typeof value === "undefined")
          continue;
        if (key === "filterKey") filterKey = value;
        frontMatterToWrite += `  ${key}: \`${value}\`,\n`;
      }

      destination = destination.slice(0, -3); // slice off .md
      if (filterKey === "") {
        if (
          destination.startsWith("cli/") ||
          destination.startsWith("console/")
        ) {
          // deal with cli/start/install right at the top
          destination = "src/pages/" + destination + ".mdx";
        } else if (destination.startsWith("start/")) {
          filterKey = "integration";
        } else if (destination.startsWith("lib/")) {
          filterKey = "platform";
        } else if (destination.startsWith("sdk/")) {
          filterKey = "platform";
        } else if (destination.startsWith("ui/")) {
          filterKey = "framework";
        } else if (destination.startsWith("guides/")) {
          filterKey = "platform";
        }
      }
      frontMatterToWrite += "};\n\n";

      try {
        if (isProductRoot(destination)) {
          // lib/lib -> just lib
          destination = destination.split("/")[0];
        }
      } catch {}

      if (filterKey !== "") {
        destination =
          "src/pages/" + destination + `/q/${filterKey}/[${filterKey}].mdx`;
      }
    }

    // src=[path] -> src="[path]"
    // complicated regex because we don't want to surround strings
    // that already have quotes with more quotes
    file = file.replace(/src=([^"](?:.*?)[^"])>/g, `src="$1">`);
    file = file.replace(/src="~(.*?)"/g, `src="$1"`);
    file = file.replace(/url="~(.*?)"/g, `url="$1"`);
    file = file.replace(/href="~(.*?)"/g, `href="$1"`);

    // reset counter
    counter = 0;
    // inline-fragment -> Fragments
    // <inline-fragment src="~/{1}/fragments{2}"></inline-fragment> ->
    //   import all from "/src/fragments/{1}{2}x";
    //   <Fragments fragments={all: all} />
    file = file.replace(
      /<inline-fragment src="\/(.*?)fragments\/(.*?)"><\/inline-fragment>/g,
      replacer1,
    );

    // <inline-fragment platform/integration="{1}" src="~/{2}/fragments{3}"></inline-fragment> ->
    //   import {1} from "/src/fragments/{2}{3}x";
    //   <Fragments fragments={{1}: {1}} />
    file = file.replace(
      /<inline-fragment .*?="(.*?)" src="\/(.*?)fragments\/(.*?)"><\/inline-fragment>/g,
      replacer2,
    );

    // amplify-block + amplify-block-switcher -> CodeBlock + BlockSwitcher
    file = file.split("amplify-block-switcher").join("BlockSwitcher");
    file = file.split("amplify-block").join("Block");

    // amplify-callout -> Callout
    file = file.split("amplify-callout").join("Callout");

    // amplify-responsive-grid -> Grid
    file = file.split("amplify-responsive-grid").join("Grid");

    // docs-card -> Card
    file = file.split("docs-card").join("Card");

    // docs-internal-link-button -> InternalLinkButton
    file = file.split("docs-internal-link-button").join("InternalLinkButton");

    // docs-hero -> Hero
    file = file.split("docs-hero").join("Hero");

    // docs-footer -> Footer
    file = file.split("docs-footer").join("Footer");

    // docs-container -> Container
    file = file.split("docs-container").join("Container");

    // docs-filter -> FilterContent
    file = file.split("docs-filter").join("FilterContent");

    // links
    file = file.split("(~").join("(");
    file = file.split(".md)").join(")");
    file = file.split('.md"').join('"');

    // misformatted </br>s
    file = file.split("<br>").join("<br/>");
    file = file.split("</br>").join("<br/>");

    // hash URIs
    file = file.split(".md#").join("#");

    // fix ../ image links
    file = file.split("](../../images").join("](/images");

    // double path links
    file = file.split("/start/start").join("/start");
    file = file.split("/lib/lib").join("/lib");
    file = file.split("/cli/cli").join("/cli");
    file = file.split("/ui/ui").join("/ui");

    file = frontMatterToWrite + file;

    // 2 blank lines
    while (file.match(/\n\n\n/g)) {
      file = file.replace(/\n\n\n/g, "\n\n");
    }

    try {
      mkdirp.sync(
        destination
          .split("/")
          .slice(0, -1)
          .join("/"),
      );
    } catch (e) {}
    fs.writeFileSync(destination, file);
  }
};