initial esm conversion

Signed-off-by: Brian DeHamer <bdehamer@github.com>

__tests__/sbom.test.ts

@@ -17,7 +17,7 @@ describe('parseSBOMFromPath', () => {
   describe('when file does not exist', () => {
     it('throws an error', async () => {
       await expect(parseSBOMFromPath('/nonexistent/file.json')).rejects.toThrow(
-        /SBOM file not found/
+        /ENOENT/
       )
     })
   })

dist/606.index.js

@@ -1,7 +1,6 @@
-"use strict";
-exports.id = 606;
-exports.ids = [606];
-exports.modules = {
+export const id = 606;
+export const ids = [606];
+export const modules = {
 
 /***/ 606:
 /***/ ((__unused_webpack___webpack_module__, __webpack_exports__, __webpack_require__) => {
@@ -298,4 +297,3 @@ const pMapSkip = Symbol('skip');
 /***/ })
 
 };
-;

dist/package.json

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

package.json

@@ -4,6 +4,7 @@
   "version": "3.2.0",
   "author": "",
   "private": true,
+  "type": "module",
   "homepage": "https://github.com/actions/attest",
   "repository": {
     "type": "git",
@@ -56,7 +57,13 @@
       "/dist/"
     ],
     "transform": {
-      "^.+\\.ts$": "ts-jest"
+      "^.+\\.ts$": ["ts-jest", {
+        "useESM": false,
+        "tsconfig": {
+          "module": "CommonJS",
+          "moduleResolution": "Node"
+        }
+      }]
     },
     "coverageReporters": [
       "json-summary",

src/sbom.ts

@@ -11,18 +11,15 @@ export type SBOM = {
 const MAX_SBOM_SIZE_BYTES = 16 * 1024 * 1024
 
 export const parseSBOMFromPath = async (filePath: string): Promise<SBOM> => {
-  if (!fs.existsSync(filePath)) {
-    throw new Error(`SBOM file not found: ${filePath}`)
-  }
+  const fileContent = await fs.promises.readFile(filePath, 'utf8')
 
-  const stats = fs.statSync(filePath)
+  const stats = await fs.promises.stat(filePath)
   if (stats.size > MAX_SBOM_SIZE_BYTES) {
     throw new Error(
       `SBOM file exceeds maximum allowed size: ${MAX_SBOM_SIZE_BYTES} bytes`
     )
   }
 
-  const fileContent = await fs.promises.readFile(filePath, 'utf8')
   const sbom = JSON.parse(fileContent) as object
 
   if (checkIsSPDX(sbom)) {

tsconfig.json

@@ -2,9 +2,9 @@
   "$schema": "https://json.schemastore.org/tsconfig",
   "compilerOptions": {
     "target": "ES2022",
-    "module": "NodeNext",
+    "module": "ESNext",
     "rootDir": "./src",
-    "moduleResolution": "NodeNext",
+    "moduleResolution": "Bundler",
     "isolatedModules": true,
     "baseUrl": "./",
     "sourceMap": true,