switch to ESM and update config/test wiring

Signed-off-by: CrazyMax <1951866+crazy-max@users.noreply.github.com>

.prettierrc.json

@@ -6,6 +6,5 @@
   "singleQuote": true,
   "trailingComma": "none",
   "bracketSpacing": false,
-  "arrowParens": "avoid",
-  "parser": "typescript"
+  "arrowParens": "avoid"
 }

__tests__/context.test.ts

@@ -2,12 +2,12 @@ import {afterEach, beforeEach, describe, expect, test, it, vi} from 'vitest';
 import * as dotenv from 'dotenv';
 import * as fs from 'fs';
 import * as path from 'path';
-import {Context} from '@actions/github/lib/context';
-import {Git} from '@docker/actions-toolkit/lib/git';
-import {GitHub} from '@docker/actions-toolkit/lib/github';
-import {Toolkit} from '@docker/actions-toolkit/lib/toolkit';
+import {Context} from '@actions/github/lib/context.js';
+import {Git} from '@docker/actions-toolkit/lib/git.js';
+import {GitHub} from '@docker/actions-toolkit/lib/github.js';
+import {Toolkit} from '@docker/actions-toolkit/lib/toolkit.js';
 
-import * as context from '../src/context';
+import * as context from '../src/context.js';
 
 const toolkit = new Toolkit({githubToken: 'fake-github-token'});
 

__tests__/flavor.test.ts

@@ -1,6 +1,6 @@
 import {describe, expect, test} from 'vitest';
 
-import {Flavor, Transform} from '../src/flavor';
+import {Flavor, Transform} from '../src/flavor.js';
 
 describe('transform', () => {
   // prettier-ignore
@@ -175,7 +175,7 @@ describe('transform', () => {
       if (!invalid) {
         console.error(err);
       }
-      // eslint-disable-next-line @vitest/no-conditional-expect
+      // eslint-disable-next-line vitest/no-conditional-expect
       expect(true).toBe(invalid);
     }
   });

__tests__/image.test.ts

@@ -1,6 +1,6 @@
 import {describe, expect, test} from 'vitest';
 
-import {Transform, Image} from '../src/image';
+import {Transform, Image} from '../src/image.js';
 
 describe('transform', () => {
   // prettier-ignore
@@ -95,7 +95,7 @@ describe('transform', () => {
       if (!invalid) {
         console.error(err);
       }
-      // eslint-disable-next-line @vitest/no-conditional-expect
+      // eslint-disable-next-line vitest/no-conditional-expect
       expect(true).toBe(invalid);
     }
   });

__tests__/meta.test.ts

@@ -3,15 +3,15 @@ import * as fs from 'fs';
 import * as path from 'path';
 import * as dotenv from 'dotenv';
 
-import {Context} from '@actions/github/lib/context';
-import {GitHub} from '@docker/actions-toolkit/lib/github';
-import {Toolkit} from '@docker/actions-toolkit/lib/toolkit';
-import {GitHubRepo} from '@docker/actions-toolkit/lib/types/github';
+import {Context} from '@actions/github/lib/context.js';
+import {GitHub} from '@docker/actions-toolkit/lib/github.js';
+import {Toolkit} from '@docker/actions-toolkit/lib/toolkit.js';
+import {GitHubRepo} from '@docker/actions-toolkit/lib/types/github.js';
 
-import {ContextSource, getContext, getInputs, Inputs} from '../src/context';
-import {Meta, Version} from '../src/meta';
+import {ContextSource, getContext, getInputs, Inputs} from '../src/context.js';
+import {Meta, Version} from '../src/meta.js';
 
-import repoFixture from './fixtures/repo.json';
+import repoFixture from './fixtures/repo.json' with {type: 'json'};
 
 vi.spyOn(GitHub.prototype, 'repoData').mockImplementation((): Promise<GitHubRepo> => {
   return <Promise<GitHubRepo>>(repoFixture as unknown);
@@ -85,7 +85,7 @@ const tagsLabelsTest = async (name: string, envFile: string, inputs: Inputs, exV
 
 describe('null', () => {
   // prettier-ignore
-  // eslint-disable-next-line @vitest/expect-expect
+  // eslint-disable-next-line vitest/expect-expect
   test.each([
     [
       'null01',
@@ -144,7 +144,7 @@ describe('null', () => {
 
 describe('push', () => {
   // prettier-ignore
-  // eslint-disable-next-line @vitest/expect-expect
+  // eslint-disable-next-line vitest/expect-expect
   test.each([
     [
       'push01',
@@ -867,7 +867,7 @@ describe('push', () => {
 
 describe('tag', () => {
   // prettier-ignore
-  // eslint-disable-next-line @vitest/expect-expect
+  // eslint-disable-next-line vitest/expect-expect
   test.each([
     [
       'tag01',
@@ -2046,7 +2046,7 @@ describe('tag', () => {
 
 describe('latest', () => {
   // prettier-ignore
-  // eslint-disable-next-line @vitest/expect-expect
+  // eslint-disable-next-line vitest/expect-expect
   test.each([
     [
       'latest01',
@@ -2388,7 +2388,7 @@ describe('latest', () => {
 
 describe('pr', () => {
   // prettier-ignore
-  // eslint-disable-next-line @vitest/expect-expect
+  // eslint-disable-next-line vitest/expect-expect
   test.each([
     [
       'pr01',
@@ -3170,7 +3170,7 @@ describe('pr-head-sha', () => {
 
 describe('schedule', () => {
   // prettier-ignore
-  // eslint-disable-next-line @vitest/expect-expect
+  // eslint-disable-next-line vitest/expect-expect
   test.each([
     [
       'schedule01',
@@ -3434,7 +3434,7 @@ describe('schedule', () => {
 
 describe('release', () => {
   // prettier-ignore
-  // eslint-disable-next-line @vitest/expect-expect
+  // eslint-disable-next-line vitest/expect-expect
   test.each([
     [
       'release01',
@@ -3536,7 +3536,7 @@ describe('release', () => {
 
 describe('raw', () => {
   // prettier-ignore
-  // eslint-disable-next-line @vitest/expect-expect
+  // eslint-disable-next-line vitest/expect-expect
   test.each([
     [
       'raw01',

__tests__/tag.test.ts

@@ -1,6 +1,6 @@
 import {describe, expect, test} from 'vitest';
 
-import {Transform, Parse, Tag, Type, RefEvent, ShaFormat, DefaultPriorities} from '../src/tag';
+import {Transform, Parse, Tag, Type, RefEvent, ShaFormat, DefaultPriorities} from '../src/tag.js';
 
 describe('transform', () => {
   // prettier-ignore
@@ -107,7 +107,7 @@ describe('transform', () => {
       if (!invalid) {
         console.error(err);
       }
-      // eslint-disable-next-line @vitest/no-conditional-expect
+      // eslint-disable-next-line vitest/no-conditional-expect
       expect(true).toBe(invalid);
     }
   });
@@ -461,7 +461,7 @@ describe('parse', () => {
       if (!invalid) {
         console.error(err);
       }
-      // eslint-disable-next-line @vitest/no-conditional-expect
+      // eslint-disable-next-line vitest/no-conditional-expect
       expect(true).toBe(invalid);
     }
   });

eslint.config.mjs

@@ -0,0 +1,52 @@
+import {defineConfig} from 'eslint/config';
+import js from '@eslint/js';
+import tseslint from '@typescript-eslint/eslint-plugin';
+import vitest from '@vitest/eslint-plugin';
+import globals from 'globals';
+import eslintConfigPrettier from 'eslint-config-prettier/flat';
+import eslintPluginPrettier from 'eslint-plugin-prettier';
+
+export default defineConfig([
+  {
+    ignores: ['.yarn/**/*', 'coverage/**/*', 'dist/**/*']
+  },
+  js.configs.recommended,
+  ...tseslint.configs['flat/recommended'],
+  eslintConfigPrettier,
+  {
+    languageOptions: {
+      globals: {
+        ...globals.node
+      }
+    }
+  },
+  {
+    files: ['__tests__/**'],
+    ...vitest.configs.recommended,
+    languageOptions: {
+      globals: {
+        ...globals.node,
+        ...vitest.environments.env.globals
+      }
+    },
+    rules: {
+      ...vitest.configs.recommended.rules,
+      'vitest/no-conditional-expect': 'error',
+      'vitest/no-disabled-tests': 0
+    }
+  },
+  {
+    plugins: {
+      prettier: eslintPluginPrettier
+    },
+    rules: {
+      'prettier/prettier': 'error',
+      '@typescript-eslint/no-require-imports': [
+        'error',
+        {
+          allowAsImport: true
+        }
+      ]
+    }
+  }
+]);

package.json

@@ -1,15 +1,12 @@
 {
   "name": "docker-metadata-action",
   "description": "GitHub Action to extract metadata (tags, labels) for Docker",
+  "type": "module",
   "main": "src/main.ts",
   "scripts": {
     "build": "ncc build --source-map --minify --license licenses.txt",
-    "lint": "yarn run prettier && yarn run eslint",
-    "format": "yarn run prettier:fix && yarn run eslint:fix",
-    "eslint": "eslint --max-warnings=0 .",
-    "eslint:fix": "eslint --fix .",
-    "prettier": "prettier --check \"./**/*.ts\"",
-    "prettier:fix": "prettier --write \"./**/*.ts\"",
+    "lint": "eslint --max-warnings=0 .",
+    "format": "eslint --fix .",
     "test": "vitest run"
   },
   "repository": {
@@ -38,10 +35,9 @@
     "semver": "^7.7.3"
   },
   "devDependencies": {
-    "@eslint/compat": "^2.0.0",
-    "@eslint/eslintrc": "^3.3.3",
     "@eslint/js": "^9.39.2",
     "@types/node": "^20.19.27",
+    "@types/semver": "^7.7.1",
     "@typescript-eslint/eslint-plugin": "^8.50.0",
     "@typescript-eslint/parser": "^8.50.0",
     "@vercel/ncc": "^0.38.4",
@@ -51,8 +47,8 @@
     "eslint": "^9.39.2",
     "eslint-config-prettier": "^10.1.8",
     "eslint-plugin-prettier": "^5.5.4",
+    "globals": "^17.3.0",
     "prettier": "^3.7.4",
-    "ts-node": "^10.9.2",
     "typescript": "^5.9.3",
     "vitest": "^4.0.18"
   }

src/context.ts

@@ -1,9 +1,10 @@
 import * as core from '@actions/core';
-import {Context as GithubContext} from '@actions/github/lib/context';
-import {Util} from '@docker/actions-toolkit/lib/util';
-import {Git} from '@docker/actions-toolkit/lib/git';
-import {GitHub} from '@docker/actions-toolkit/lib/github';
-import {Toolkit} from '@docker/actions-toolkit/lib/toolkit';
+
+import {Context as GithubContext} from '@actions/github/lib/context.js';
+import {Util} from '@docker/actions-toolkit/lib/util.js';
+import {Git} from '@docker/actions-toolkit/lib/git.js';
+import {GitHub} from '@docker/actions-toolkit/lib/github.js';
+import {Toolkit} from '@docker/actions-toolkit/lib/toolkit.js';
 
 export interface Context extends GithubContext {
   commitDate: Date;

src/main.ts

@@ -1,11 +1,11 @@
 import * as fs from 'fs';
 import * as core from '@actions/core';
 import * as actionsToolkit from '@docker/actions-toolkit';
-import {Toolkit} from '@docker/actions-toolkit/lib/toolkit';
-import {Util} from '@docker/actions-toolkit/lib/util';
+import {Toolkit} from '@docker/actions-toolkit/lib/toolkit.js';
+import {Util} from '@docker/actions-toolkit/lib/util.js';
 
-import {getContext, getInputs, Inputs} from './context';
-import {Meta, Version} from './meta';
+import {getContext, getInputs, Inputs} from './context.js';
+import {Meta, Version} from './meta.js';
 
 actionsToolkit.run(
   // main

src/meta.ts

@@ -5,13 +5,13 @@ import moment from 'moment-timezone';
 import * as pep440 from '@renovate/pep440';
 import * as semver from 'semver';
 import * as core from '@actions/core';
-import {Context as ToolkitContext} from '@docker/actions-toolkit/lib/context';
-import {GitHubRepo} from '@docker/actions-toolkit/lib/types/github';
+import {Context as ToolkitContext} from '@docker/actions-toolkit/lib/context.js';
+import {GitHubRepo} from '@docker/actions-toolkit/lib/types/github.js';
 
-import {Inputs, Context} from './context';
-import * as icl from './image';
-import * as tcl from './tag';
-import * as fcl from './flavor';
+import {Inputs, Context} from './context.js';
+import * as icl from './image.js';
+import * as tcl from './tag.js';
+import * as fcl from './flavor.js';
 
 const defaultShortShaLength = 7;