From f9111d5c6f7bec462b8a62f9d7e6f648324e6d70 Mon Sep 17 00:00:00 2001
From: Rody van Sambeek <info@rodyvansambeek.com>
Date: Thu, 21 Mar 2024 16:50:03 +0100
Subject: [PATCH] Updated way to check for main in ESM

---
 package-lock.json | 8 ++++++++
 package.json      | 3 +++
 src/index.ts      | 4 +++-
 tsconfig.json     | 2 +-
 4 files changed, 15 insertions(+), 2 deletions(-)

diff --git a/package-lock.json b/package-lock.json
index 0872fa5..ef10be9 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -8,6 +8,9 @@
       "name": "@rodys/week",
       "version": "1.0.0",
       "license": "MIT",
+      "dependencies": {
+        "es-main": "^1.3.0"
+      },
       "bin": {
         "week": "dist/index.js"
       },
@@ -1598,6 +1601,11 @@
         "is-arrayish": "^0.2.1"
       }
     },
+    "node_modules/es-main": {
+      "version": "1.3.0",
+      "resolved": "https://registry.npmjs.org/es-main/-/es-main-1.3.0.tgz",
+      "integrity": "sha512-AzORKdz1Zt97TzbYQnIrI3ZiibWpRXUfpo/w0xOJ20GpNYd2bd3MU9m31zS/aJ1TJl6JfLTok83Y8HjNunYT0A=="
+    },
     "node_modules/escalade": {
       "version": "3.1.2",
       "resolved": "https://registry.npmjs.org/escalade/-/escalade-3.1.2.tgz",
diff --git a/package.json b/package.json
index 3577c23..3ab43ca 100644
--- a/package.json
+++ b/package.json
@@ -35,5 +35,8 @@
     "jest": "^29.7.0",
     "ts-jest": "^29.1.2",
     "typescript": "^5.4.2"
+  },
+  "dependencies": {
+    "es-main": "^1.3.0"
   }
 }
diff --git a/src/index.ts b/src/index.ts
index 7602049..23dd58c 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -1,5 +1,7 @@
 #!/usr/bin/env node
 
+import esMain from "es-main";
+
 const getCurrentISOWeek = (date: Date) => {
   const dayOfWeek = date.getDay();
   const currentDay = date.getDate();
@@ -18,6 +20,6 @@ const getCurrentISOWeek = (date: Date) => {
 
 export default getCurrentISOWeek;
 
-if (require.main === module) {
+if (esMain(import.meta)) {
   console.log(getCurrentISOWeek(new Date()));
 }
diff --git a/tsconfig.json b/tsconfig.json
index 6fb473c..a9c2a75 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -25,7 +25,7 @@
     // "moduleDetection": "auto",                        /* Control what method is used to detect module-format JS files. */
 
     /* Modules */
-    "module": "CommonJS",                                /* Specify what module code is generated. */
+    "module": "ESNext",                                /* Specify what module code is generated. */
     "rootDir": "./src",                                  /* Specify the root folder within your source files. */
     "moduleResolution": "node10",                     /* Specify how TypeScript looks up a file from a given module specifier. */
     // "baseUrl": "./",                                  /* Specify the base directory to resolve non-relative module names. */