adds typescript to project

Author: lucas-lourencoo

index.js

@@ -0,0 +1,90 @@
+/**
+ * @author Shyam Hajare <hajareshyam@gmail.com>
+ */
+
+/**
+ * create function is used to create pdf from handlebar templates.
+ * @param  {document, options}
+ * @return {callback}
+ */
+
+import Handlebars from "handlebars";
+import pdf, { CreateOptions } from "html-pdf";
+
+Handlebars.registerHelper(
+  "ifCond",
+  function (
+    this: any,
+    v1: any,
+    operator: string,
+    v2: any,
+    options: IfCondOptions
+  ) {
+    switch (operator) {
+      case "==":
+        return v1 == v2 ? options.fn(this) : options.inverse(this);
+      case "===":
+        return v1 === v2 ? options.fn(this) : options.inverse(this);
+      case "!=":
+        return v1 != v2 ? options.fn(this) : options.inverse(this);
+      case "!==":
+        return v1 !== v2 ? options.fn(this) : options.inverse(this);
+      case "<":
+        return v1 < v2 ? options.fn(this) : options.inverse(this);
+      case "<=":
+        return v1 <= v2 ? options.fn(this) : options.inverse(this);
+      case ">":
+        return v1 > v2 ? options.fn(this) : options.inverse(this);
+      case ">=":
+        return v1 >= v2 ? options.fn(this) : options.inverse(this);
+      case "&&":
+        return v1 && v2 ? options.fn(this) : options.inverse(this);
+      case "||":
+        return v1 || v2 ? options.fn(this) : options.inverse(this);
+      default:
+        return options.inverse(this);
+    }
+  }
+);
+
+const create = function (
+  document: Document,
+  options: CreateOptions
+): Promise<Buffer | NodeJS.ReadableStream | pdf.FileInfo> {
+  return new Promise((resolve, reject) => {
+    if (!document || !document.html || !document.data) {
+      reject(new Error("Some, or all, options are missing."));
+    }
+    // Compiles a template
+    const html = Handlebars.compile(document.html)(document.data);
+    const pdfPromise = pdf.create(html, options);
+
+    // Create PDF from html template generated by handlebars
+    // Output will be PDF file
+
+    switch (document.type) {
+      case "buffer":
+        pdfPromise.toBuffer((err, res) => {
+          if (!err) resolve(res);
+          else reject(err);
+        });
+        break;
+
+      case "stream":
+        pdfPromise.toStream((err, res) => {
+          if (!err) resolve(res);
+          else reject(err);
+        });
+        break;
+
+      default:
+        pdfPromise.toFile(document.path!, (err, res) => {
+          if (!err) resolve(res);
+          else reject(err);
+        });
+        break;
+    }
+  });
+};
+
+module.exports.create = create;

index.ts

@@ -47,6 +47,11 @@
   "license": "ISC",
   "dependencies": {
     "handlebars": "^4.7.7",
-    "html-pdf": "^3.0.1"
+    "html-pdf": "^3.0.1",
+    "typescript": "^5.7.3"
+  },
+  "devDependencies": {
+    "@types/html-pdf": "^3.0.3",
+    "@types/node": "^22.13.0"
   }
 }

package-lock.json

@@ -0,0 +1,11 @@
+{
+  "compilerOptions": {
+    /* Visit https://aka.ms/tsconfig to read more about this file */
+    "target": "es2016",
+    "module": "commonjs",
+    "esModuleInterop": true,
+    "forceConsistentCasingInFileNames": true,
+    "strict": true,
+    "skipLibCheck": true
+  }
+}

package.json

@@ -0,0 +1,11 @@
+interface IfCondOptions {
+  fn: (context: any) => string;
+  inverse: (context: any) => string;
+}
+
+interface Document {
+  html: string;
+  data: any;
+  type: "buffer" | "stream" | "file";
+  path?: string;
+}