prose-star-test.js

    // get all the ingredients from the recipe that were present in the page, plus "prose.*"
    const filteredRecipeIngredients = file.data.recipe.body.filter(
      (ingredient) =>
        pageIngredientNames.includes(ingredient) || ingredient === "prose.*"
    );
    // get the index of the "prose.*" ingredient in the recipe
    const indexOfProseStar = filteredRecipeIngredients.indexOf("prose.*");
    if (indexOfProseStar !== -1) {
      // get the ingredients before and after prose.* in the recipe
      const ingredientBefore = filteredRecipeIngredients[indexOfProseStar - 1];
      const ingredientAfter = filteredRecipeIngredients[indexOfProseStar + 1];
      // get the node indices (positions) of the before and after ingredients in the page
      const indexBefore = getPageIndex(ingredientBefore, pageIngredients);
      const indexAfter = getPageIndex(ingredientAfter, pageIngredients);

      // get all the custom prose sections from the page
      const customSections = collectProseStar(tree, file);
      // all custom prose sections must have a node index between the previous and next
      for (const section of customSections) {
        if (
          (indexBefore !== null && indexBefore >= section.data.pageIndex) ||
          (indexAfter !== null && indexAfter <= section.data.pageIndex)
        ) {
          const message = file.message(
            `prose.*: ${section.tagName}#${section.properties.id} not expected in this position`,
            section,
            `${source}:${path.basename(
              file.data.recipePath,
              ".yaml"
            )}/prose.*/ingredient-out-of-order`
          );
          message.fatal = true;
        }
      }
    }