Migrate to ESM, fixes #36

dist/package.json

@@ -0,0 +1,3 @@
+{
+  "type": "module"
+}

jest.config.ts

@@ -6,11 +6,14 @@
 import type { Config } from "jest";
 
 const config: Config = {
-  preset: "ts-jest",
+  preset: "ts-jest/presets/default-esm",
+  moduleNameMapper: {
+    '^(\\.{1,2}/.*)\\.js$': '$1',
+  },
   verbose: true,
   collectCoverage: true,
   coverageDirectory: "coverage",
-  coverageProvider: "v8",
+  coverageProvider: "v8"
 };
 
 export default config;

package.json

@@ -18,6 +18,7 @@
     "setup",
     "ghidra"
   ],
+  "type": "module",
   "main": "index.js",
   "scripts": {
     "build": "ncc build src/setup-ghidra.ts",

src/github_helper.test.ts

@@ -1,4 +1,4 @@
-import * as github_helper from "./github_helper";
+import * as github_helper from "./github_helper.js";
 
 test("Oktokit getter, no token", () => {
   const octokit = github_helper.getOctokit();

src/github_helper.ts

@@ -1,5 +1,5 @@
 import { Octokit } from "@octokit/rest";
-import { getOctokitOptions } from "@actions/github/lib/utils";
+import { getOctokitOptions } from "@actions/github/lib/utils.js";
 
 export function getOctokit(auth_token?: string) {
   let options = {};

src/installer.test.ts

@@ -1,7 +1,7 @@
 import path = require("path");
 import io = require("@actions/io");
-import * as github_helper from "./github_helper";
-import * as installer from "./installer";
+import * as github_helper from "./github_helper.js";
+import * as installer from "./installer.js";
 import * as fs from "fs";
 
 describe("Installer tests", () => {

src/setup-ghidra.ts

@@ -1,6 +1,6 @@
 import * as core from "@actions/core";
-import * as github_helper from "./github_helper";
-import * as installer from "./installer";
+import * as github_helper from "./github_helper.js";
+import * as installer from "./installer.js";
 
 const regexVersion = new RegExp("^\\d+(\\.\\d+)*(\\.\\d+)*$");
 const regexSha256sum = new RegExp("^[\\da-fA-F]{64}$");