Convert to ESM

src/index.ts

@@ -1,7 +1,8 @@
 /**
- * The entrypoint for the action.
+ * The entrypoint for the action. This file simply imports and runs the action's
+ * main logic.
  */
-import { run } from './main'
+import { run } from './main.js'
 
-// eslint-disable-next-line @typescript-eslint/no-floating-promises
+/* istanbul ignore next */
 run()

src/main.ts

@@ -1,9 +1,10 @@
 import * as core from '@actions/core'
-import { wait } from './wait'
+import { wait } from './wait.js'
 
 /**
  * The main function for the action.
- * @returns {Promise<void>} Resolves when the action is complete.
+ *
+ * @returns Resolves when the action is complete.
  */
 export async function run(): Promise<void> {
   try {

src/wait.ts

@@ -1,13 +1,12 @@
 /**
- * Wait for a number of milliseconds.
+ * Waits for a number of milliseconds.
+ *
  * @param milliseconds The number of milliseconds to wait.
- * @returns {Promise<string>} Resolves with 'done!' after the wait is over.
+ * @returns Resolves with 'done!' after the wait is over.
  */
 export async function wait(milliseconds: number): Promise<string> {
-  return new Promise(resolve => {
-    if (isNaN(milliseconds)) {
-      throw new Error('milliseconds not a number')
-    }
+  return new Promise((resolve) => {
+    if (isNaN(milliseconds)) throw new Error('milliseconds is not a number')
 
     setTimeout(() => resolve('done!'), milliseconds)
   })