Create simple template renderer

utils/templates.jsm

@@ -0,0 +1,28 @@
+import fs from "fs";
+import path from "path";
+
+export function createTemplateRenderer({
+  baseDir = path.resolve("templates"),
+  useCache = true,
+} = {}) {
+  const cache = {};
+
+  return function render(fileName, vars = {}) {
+    const filePath = path.join(baseDir, fileName);
+    let template;
+
+    if (useCache && cache[filePath]) {
+      template = cache[filePath];
+    } else {
+      template = fs.readFileSync(filePath, "utf8");
+      if (useCache) cache[filePath] = template;
+    }
+
+    let html = template;
+    for (const [key, value] of Object.entries(vars)) {
+      html = html.replace(new RegExp(`{{${key}}}`, "g"), value);
+    }
+
+    return html;
+  };
+}