From 85c1af852f92b77549b3c40d30d3b20d88b1b4db Mon Sep 17 00:00:00 2001
From: Copilot <198982749+Copilot@users.noreply.github.com>
Date: Fri, 30 Jan 2026 13:27:03 +0100
Subject: [PATCH] Convert CommonJS to ESM (#255)

* Initial plan

* Convert CommonJS imports to ESM

Co-authored-by: dawidd6 <9713907+dawidd6@users.noreply.github.com>

* Use node: protocol prefix for built-in modules

Co-authored-by: dawidd6 <9713907+dawidd6@users.noreply.github.com>

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: dawidd6 <9713907+dawidd6@users.noreply.github.com>
---
 main.js      | 12 ++++++------
 package.json |  1 +
 2 files changed, 7 insertions(+), 6 deletions(-)

diff --git a/main.js b/main.js
index 59b3e680..6a557333 100644
--- a/main.js
+++ b/main.js
@@ -1,9 +1,9 @@
-const nodemailer = require("nodemailer");
-const core = require("@actions/core");
-const glob = require("@actions/glob");
-const fs = require("fs");
-const showdown = require("showdown");
-const path = require("path");
+import nodemailer from "nodemailer";
+import * as core from "@actions/core";
+import * as glob from "@actions/glob";
+import fs from "node:fs";
+import showdown from "showdown";
+import path from "node:path";
 
 function getText(textOrFile, convertMarkdown) {
     let text = textOrFile;
diff --git a/package.json b/package.json
index c6d85ac5..3010e6a6 100644
--- a/package.json
+++ b/package.json
@@ -1,5 +1,6 @@
 {
   "name": "action-send-mail",
+  "type": "module",
   "main": "main.js",
   "dependencies": {
     "@actions/core": "^3.0.0",