new OCI compat mode flag

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

.github/linters/.yaml-lint.yml

@@ -0,0 +1,10 @@
+rules:
+  document-end: disable
+  document-start:
+    level: warning
+    present: false
+  line-length:
+    level: warning
+    max: 80
+    allow-non-breakable-words: true
+    allow-non-breakable-inline-mappings: true

.github/linters/eslint.config.mjs

@@ -1,14 +1,13 @@
 import eslint from '@eslint/js'
 import importplugin from 'eslint-plugin-import'
 import jestplugin from 'eslint-plugin-jest'
-import path from 'node:path'
 import tseslint from 'typescript-eslint'
 
 export default tseslint.config(
   // Ignore non-project files
   {
     name: 'ignore',
-    ignores: ['.github', 'dist', 'coverage', '**/*.json', 'jest.setup.js', 'eslint.config.mjs']
+    ignores: ['.github', 'dist', 'coverage', '**/*.json', 'jest.setup.js']
   },
   // Use recommended rules from ESLint, TypeScript, and other plugins
   eslint.configs.recommended,
@@ -22,7 +21,7 @@ export default tseslint.config(
     languageOptions: {
       ecmaVersion: 2023,
       parserOptions: {
-        project: [ './tsconfig.lint.json' ]
+        project: ['./.github/linters/tsconfig.json', './tsconfig.json']
       }
     },
     rules: {

.github/linters/tsconfig.json

@@ -0,0 +1,9 @@
+{
+  "$schema": "https://json.schemastore.org/tsconfig",
+  "extends": "../../tsconfig.json",
+  "compilerOptions": {
+    "noEmit": true
+  },
+  "include": ["../../__tests__/**/*", "../../src/**/*"],
+  "exclude": ["../../dist", "../../node_modules", "../../coverage", "*.json"]
+}

.github/workflows/check-dist.yml

@@ -28,7 +28,7 @@ jobs:
     steps:
       - name: Checkout
         id: checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v4
 
       - name: Setup Node.js
         id: setup-node

.github/workflows/ci.yml

@@ -21,7 +21,7 @@ jobs:
     steps:
       - name: Checkout
         id: checkout
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1
 
       - name: Setup Node.js
         id: setup-node
@@ -58,7 +58,7 @@ jobs:
     steps:
       - name: Checkout
         id: checkout
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1
       - name: Calculate subject digest
         id: subject
         env:

.github/workflows/codeql-analysis.yml

@@ -32,7 +32,7 @@ jobs:
     steps:
       - name: Checkout
         id: checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v4
 
       - name: Initialize CodeQL
         id: initialize

.github/workflows/linter.yml

@@ -0,0 +1,50 @@
+name: Lint Codebase
+
+on:
+  pull_request:
+    branches:
+      - main
+  push:
+    branches:
+      - main
+
+permissions:
+  contents: read
+  packages: read
+  statuses: write
+
+jobs:
+  lint:
+    name: Lint Codebase
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        id: checkout
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - name: Setup Node.js
+        id: setup-node
+        uses: actions/setup-node@v4
+        with:
+          node-version-file: .node-version
+          cache: npm
+
+      - name: Install Dependencies
+        id: install
+        run: npm ci
+
+      - name: Lint Codebase
+        id: super-linter
+        uses: super-linter/super-linter/slim@v7.2.1
+        env:
+          DEFAULT_BRANCH: main
+          FILTER_REGEX_EXCLUDE: dist/**/*
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          TYPESCRIPT_DEFAULT_STYLE: prettier
+          VALIDATE_ALL_CODEBASE: true
+          VALIDATE_JAVASCRIPT_STANDARD: false
+          VALIDATE_TYPESCRIPT_STANDARD: false
+          VALIDATE_JSCPD: false

.github/workflows/publish-immutable-actions.yml

@@ -0,0 +1,22 @@
+name: 'Publish Immutable Action Version'
+
+on:
+  release:
+    types: [published]
+
+permissions: {}
+
+jobs:
+  publish:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      id-token: write
+      packages: write
+
+    steps:
+      - name: Checking out
+        uses: actions/checkout@v4
+      - name: Publish
+        id: publish
+        uses: actions/publish-immutable-action@v0.0.4

.node-version

@@ -1 +1 @@
-24.5.0
+20.6.0

README.md

@@ -18,12 +18,6 @@ Once the attestation has been created and signed, it will be uploaded to the GH
 attestations API and associated with the repository from which the workflow was
 initiated.
 
-When an attestation is created, the attestation is stored on the local
-filesystem used by the runner. For each attestation created, the filesystem path
-will be appended to the file `${RUNNER_TEMP}/created_attestation_paths.txt`.
-This can be used to gather all attestations created by all jobs during a the
-workflow.
-
 Attestations can be verified using the [`attestation` command in the GitHub
 CLI][5].
 

__tests__/subject.test.ts

@@ -473,13 +473,6 @@ badline
               '187dcd1506a170337415589ff00c8743f19d41cc31fca246c2739dfd450d0b9d'
           }
         })
-        expect(subjects).toContainEqual({
-          name: 'demo_0.0.1_darwin_arm64',
-          digest: {
-            sha512:
-              '5d8b4751ef31f9440d843fcfa4e53ca2e25b1cb1f13fd355fdc7c24b41fe645293291ea9297ba3989078abb77ebbaac66be073618a9e4974dbd0361881d4c718'
-          }
-        })
       })
     })
   })
@@ -487,8 +480,8 @@ badline
   describe('when specifying a subject checksums string', () => {
     const checksums = `
 f861e68a080799ca83104630b56abb90d8dbcc5f8b5a8639cb691e269838f29e  demo_0.0.1_linux_386
-187dcd1506a170337415589ff00c8743f19d41cc31fca246c2739dfd450d0b9d *demo_0.0.1_linux_amd64
-9ecbf449e286a8a8748c161c52aa28b6b2fc64ab86f94161c5d1b3abc18156c5 demo_0.0.1_linux_arm64`
+187dcd1506a170337415589ff00c8743f19d41cc31fca246c2739dfd450d0b9d  demo_0.0.1_linux_amd64
+9ecbf449e286a8a8748c161c52aa28b6b2fc64ab86f94161c5d1b3abc18156c5  demo_0.0.1_linux_arm64`
 
     it('returns the multiple subjects', async () => {
       const inputs: SubjectInputs = {
@@ -507,20 +500,6 @@ f861e68a080799ca83104630b56abb90d8dbcc5f8b5a8639cb691e269838f29e  demo_0.0.1_lin
             'f861e68a080799ca83104630b56abb90d8dbcc5f8b5a8639cb691e269838f29e'
         }
       })
-      expect(subjects).toContainEqual({
-        name: 'demo_0.0.1_linux_amd64',
-        digest: {
-          sha256:
-            '187dcd1506a170337415589ff00c8743f19d41cc31fca246c2739dfd450d0b9d'
-        }
-      })
-      expect(subjects).toContainEqual({
-        name: 'demo_0.0.1_linux_arm64',
-        digest: {
-          sha256:
-            '9ecbf449e286a8a8748c161c52aa28b6b2fc64ab86f94161c5d1b3abc18156c5'
-        }
-      })
     })
   })
 

action.yml

@@ -73,5 +73,5 @@ outputs:
     description: 'The URL for the attestation summary.'
 
 runs:
-  using: node24
+  using: node20
   main: ./dist/index.js

dist/184.index.js

@@ -0,0 +1,287 @@
+"use strict";
+exports.id = 184;
+exports.ids = [184];
+exports.modules = {
+
+/***/ 91184:
+/***/ ((__unused_webpack___webpack_module__, __webpack_exports__, __webpack_require__) => {
+
+/* harmony export */ __webpack_require__.d(__webpack_exports__, {
+/* harmony export */   "default": () => (/* binding */ pMap)
+/* harmony export */ });
+/* unused harmony exports pMapIterable, pMapSkip */
+async function pMap(
+	iterable,
+	mapper,
+	{
+		concurrency = Number.POSITIVE_INFINITY,
+		stopOnError = true,
+		signal,
+	} = {},
+) {
+	return new Promise((resolve, reject_) => {
+		if (iterable[Symbol.iterator] === undefined && iterable[Symbol.asyncIterator] === undefined) {
+			throw new TypeError(`Expected \`input\` to be either an \`Iterable\` or \`AsyncIterable\`, got (${typeof iterable})`);
+		}
+
+		if (typeof mapper !== 'function') {
+			throw new TypeError('Mapper function is required');
+		}
+
+		if (!((Number.isSafeInteger(concurrency) && concurrency >= 1) || concurrency === Number.POSITIVE_INFINITY)) {
+			throw new TypeError(`Expected \`concurrency\` to be an integer from 1 and up or \`Infinity\`, got \`${concurrency}\` (${typeof concurrency})`);
+		}
+
+		const result = [];
+		const errors = [];
+		const skippedIndexesMap = new Map();
+		let isRejected = false;
+		let isResolved = false;
+		let isIterableDone = false;
+		let resolvingCount = 0;
+		let currentIndex = 0;
+		const iterator = iterable[Symbol.iterator] === undefined ? iterable[Symbol.asyncIterator]() : iterable[Symbol.iterator]();
+
+		const reject = reason => {
+			isRejected = true;
+			isResolved = true;
+			reject_(reason);
+		};
+
+		if (signal) {
+			if (signal.aborted) {
+				reject(signal.reason);
+			}
+
+			signal.addEventListener('abort', () => {
+				reject(signal.reason);
+			});
+		}
+
+		const next = async () => {
+			if (isResolved) {
+				return;
+			}
+
+			const nextItem = await iterator.next();
+
+			const index = currentIndex;
+			currentIndex++;
+
+			// Note: `iterator.next()` can be called many times in parallel.
+			// This can cause multiple calls to this `next()` function to
+			// receive a `nextItem` with `done === true`.
+			// The shutdown logic that rejects/resolves must be protected
+			// so it runs only one time as the `skippedIndex` logic is
+			// non-idempotent.
+			if (nextItem.done) {
+				isIterableDone = true;
+
+				if (resolvingCount === 0 && !isResolved) {
+					if (!stopOnError && errors.length > 0) {
+						reject(new AggregateError(errors)); // eslint-disable-line unicorn/error-message
+						return;
+					}
+
+					isResolved = true;
+
+					if (skippedIndexesMap.size === 0) {
+						resolve(result);
+						return;
+					}
+
+					const pureResult = [];
+
+					// Support multiple `pMapSkip`'s.
+					for (const [index, value] of result.entries()) {
+						if (skippedIndexesMap.get(index) === pMapSkip) {
+							continue;
+						}
+
+						pureResult.push(value);
+					}
+
+					resolve(pureResult);
+				}
+
+				return;
+			}
+
+			resolvingCount++;
+
+			// Intentionally detached
+			(async () => {
+				try {
+					const element = await nextItem.value;
+
+					if (isResolved) {
+						return;
+					}
+
+					const value = await mapper(element, index);
+
+					// Use Map to stage the index of the element.
+					if (value === pMapSkip) {
+						skippedIndexesMap.set(index, value);
+					}
+
+					result[index] = value;
+
+					resolvingCount--;
+					await next();
+				} catch (error) {
+					if (stopOnError) {
+						reject(error);
+					} else {
+						errors.push(error);
+						resolvingCount--;
+
+						// In that case we can't really continue regardless of `stopOnError` state
+						// since an iterable is likely to continue throwing after it throws once.
+						// If we continue calling `next()` indefinitely we will likely end up
+						// in an infinite loop of failed iteration.
+						try {
+							await next();
+						} catch (error) {
+							reject(error);
+						}
+					}
+				}
+			})();
+		};
+
+		// Create the concurrent runners in a detached (non-awaited)
+		// promise. We need this so we can await the `next()` calls
+		// to stop creating runners before hitting the concurrency limit
+		// if the iterable has already been marked as done.
+		// NOTE: We *must* do this for async iterators otherwise we'll spin up
+		// infinite `next()` calls by default and never start the event loop.
+		(async () => {
+			for (let index = 0; index < concurrency; index++) {
+				try {
+					// eslint-disable-next-line no-await-in-loop
+					await next();
+				} catch (error) {
+					reject(error);
+					break;
+				}
+
+				if (isIterableDone || isRejected) {
+					break;
+				}
+			}
+		})();
+	});
+}
+
+function pMapIterable(
+	iterable,
+	mapper,
+	{
+		concurrency = Number.POSITIVE_INFINITY,
+		backpressure = concurrency,
+	} = {},
+) {
+	if (iterable[Symbol.iterator] === undefined && iterable[Symbol.asyncIterator] === undefined) {
+		throw new TypeError(`Expected \`input\` to be either an \`Iterable\` or \`AsyncIterable\`, got (${typeof iterable})`);
+	}
+
+	if (typeof mapper !== 'function') {
+		throw new TypeError('Mapper function is required');
+	}
+
+	if (!((Number.isSafeInteger(concurrency) && concurrency >= 1) || concurrency === Number.POSITIVE_INFINITY)) {
+		throw new TypeError(`Expected \`concurrency\` to be an integer from 1 and up or \`Infinity\`, got \`${concurrency}\` (${typeof concurrency})`);
+	}
+
+	if (!((Number.isSafeInteger(backpressure) && backpressure >= concurrency) || backpressure === Number.POSITIVE_INFINITY)) {
+		throw new TypeError(`Expected \`backpressure\` to be an integer from \`concurrency\` (${concurrency}) and up or \`Infinity\`, got \`${backpressure}\` (${typeof backpressure})`);
+	}
+
+	return {
+		async * [Symbol.asyncIterator]() {
+			const iterator = iterable[Symbol.asyncIterator] === undefined ? iterable[Symbol.iterator]() : iterable[Symbol.asyncIterator]();
+
+			const promises = [];
+			let runningMappersCount = 0;
+			let isDone = false;
+			let index = 0;
+
+			function trySpawn() {
+				if (isDone || !(runningMappersCount < concurrency && promises.length < backpressure)) {
+					return;
+				}
+
+				const promise = (async () => {
+					const {done, value} = await iterator.next();
+
+					if (done) {
+						return {done: true};
+					}
+
+					runningMappersCount++;
+
+					// Spawn if still below concurrency and backpressure limit
+					trySpawn();
+
+					try {
+						const returnValue = await mapper(await value, index++);
+
+						runningMappersCount--;
+
+						if (returnValue === pMapSkip) {
+							const index = promises.indexOf(promise);
+
+							if (index > 0) {
+								promises.splice(index, 1);
+							}
+						}
+
+						// Spawn if still below backpressure limit and just dropped below concurrency limit
+						trySpawn();
+
+						return {done: false, value: returnValue};
+					} catch (error) {
+						isDone = true;
+						return {error};
+					}
+				})();
+
+				promises.push(promise);
+			}
+
+			trySpawn();
+
+			while (promises.length > 0) {
+				const {error, done, value} = await promises[0]; // eslint-disable-line no-await-in-loop
+
+				promises.shift();
+
+				if (error) {
+					throw error;
+				}
+
+				if (done) {
+					return;
+				}
+
+				// Spawn if just dropped below backpressure limit and below the concurrency limit
+				trySpawn();
+
+				if (value === pMapSkip) {
+					continue;
+				}
+
+				yield value;
+			}
+		},
+	};
+}
+
+const pMapSkip = Symbol('skip');
+
+
+/***/ })
+
+};
+;

package.json

@@ -1,7 +1,7 @@
 {
   "name": "actions/attest",
   "description": "Generate signed attestations for workflow artifacts",
-  "version": "3.0.0",
+  "version": "2.2.1",
   "author": "",
   "private": true,
   "homepage": "https://github.com/actions/attest",
@@ -20,15 +20,15 @@
     ".": "./dist/index.js"
   },
   "engines": {
-    "node": ">=24"
+    "node": ">=20"
   },
   "scripts": {
     "bundle": "npm run format:write && npm run package",
     "ci-test": "jest",
     "format:write": "prettier --write **/*.ts",
     "format:check": "prettier --check **/*.ts",
-    "lint:eslint": "npx eslint",
-    "lint:markdown": "npx markdownlint --config .markdown-lint.yml \"*.md\"",
+    "lint:eslint": "npx eslint . -c ./.github/linters/eslint.config.mjs",
+    "lint:markdown": "npx markdownlint --config .github/linters/.markdown-lint.yml \"*.md\"",
     "lint": "npm run lint:eslint && npm run lint:markdown",
     "package": "ncc build src/index.ts --license licenses.txt",
     "package:watch": "npm run package -- --watch",
@@ -71,29 +71,29 @@
   "dependencies": {
     "@actions/attest": "^1.6.0",
     "@actions/core": "^1.11.1",
-    "@actions/github": "^6.0.1",
+    "@actions/github": "^6.0.0",
     "@actions/glob": "^0.5.0",
-    "@sigstore/oci": "^0.6.0",
+    "@sigstore/oci": "^0.4.0",
     "csv-parse": "^5.6.0"
   },
   "devDependencies": {
-    "@eslint/js": "^9.34.0",
-    "@sigstore/mock": "^0.11.0",
-    "@types/jest": "^30.0.0",
+    "@eslint/js": "^9.23.0",
+    "@sigstore/mock": "^0.10.0",
+    "@types/jest": "^29.5.14",
     "@types/make-fetch-happen": "^10.0.4",
-    "@types/node": "^24.3.0",
+    "@types/node": "^22.13.14",
     "@vercel/ncc": "^0.38.3",
-    "eslint": "^9.34.0",
-    "eslint-plugin-import": "^2.32.0",
-    "eslint-plugin-jest": "^29.0.1",
-    "jest": "^30.0.5",
+    "eslint": "^9.23.0",
+    "eslint-plugin-import": "^2.31.0",
+    "eslint-plugin-jest": "^28.11.0",
+    "jest": "^29.7.0",
     "js-yaml": "^4.1.0",
-    "markdownlint-cli": "^0.45.0",
+    "markdownlint-cli": "^0.44.0",
     "nock": "^13.5.6",
-    "prettier": "^3.6.2",
-    "ts-jest": "^29.4.1",
-    "typescript": "^5.9.2",
-    "typescript-eslint": "^8.41.0",
-    "undici": "^5.29.0"
+    "prettier": "^3.5.3",
+    "ts-jest": "^29.3.1",
+    "typescript": "^5.8.2",
+    "typescript-eslint": "^8.29.0",
+    "undici": "^5.28.5"
   }
 }

src/main.ts

@@ -16,7 +16,6 @@ import {
 import type { Subject } from '@actions/attest'
 
 const ATTESTATION_FILE_NAME = 'attestation.json'
-const ATTESTATION_PATHS_FILE_NAME = 'created_attestation_paths.txt'
 
 export type RunInputs = SubjectInputs &
   PredicateInputs & {
@@ -80,28 +79,11 @@ export async function run(inputs: RunInputs): Promise<void> {
       flag: 'a'
     })
 
-    const baseDir = process.env.RUNNER_TEMP
-    /* istanbul ignore else */
-    if (baseDir) {
-      const outputSummaryPath = path.join(baseDir, ATTESTATION_PATHS_FILE_NAME)
-      // Append the output path to the attestations paths file
-      fs.appendFileSync(outputSummaryPath, outputPath + os.EOL, {
-        encoding: 'utf-8',
-        flag: 'a'
-      })
-    } else {
-      core.warning(
-        'RUNNER_TEMP environment variable is not set. Cannot write attestation paths file.'
-      )
-    }
-
-    /* istanbul ignore else */
     if (att.attestationID) {
       core.setOutput('attestation-id', att.attestationID)
       core.setOutput('attestation-url', attestationURL(att.attestationID))
     }
 
-    /* istanbul ignore else */
     if (inputs.showSummary) {
       await logSummary(att)
     }
@@ -159,7 +141,6 @@ const logAttestation = (
     core.info(`${SEARCH_PUBLIC_GOOD_URL}?logIndex=${attestation.tlogID}`)
   }
 
-  /* istanbul ignore else */
   if (attestation.attestationID) {
     core.info(style.highlight('Attestation uploaded to repository'))
     core.info(attestationURL(attestation.attestationID))
@@ -175,7 +156,6 @@ const logAttestation = (
 const logSummary = async (attestation: AttestResult): Promise<void> => {
   const { attestationID } = attestation
 
-  /* istanbul ignore else */
   if (attestationID) {
     const url = attestationURL(attestationID)
     core.summary.addHeading('Attestation Created', 3)

src/subject.ts

@@ -181,14 +181,8 @@ const getSubjectFromChecksumsString = (checksums: string): Subject[] => {
       continue
     }
 
-    // It's common for checksum records to have a leading flag character before
-    // the artifact name. It will be either a '*' or a space.
-    const flag_and_name = record.slice(delimIndex + 1)
-    const name =
-      flag_and_name.startsWith('*') || flag_and_name.startsWith(' ')
-        ? flag_and_name.slice(1)
-        : flag_and_name
-
+    // Swallow the type identifier character at the beginning of the name
+    const name = record.slice(delimIndex + 2)
     const digest = record.slice(0, delimIndex)
 
     if (!HEX_STRING_RE.test(digest)) {

tsconfig.json

@@ -5,7 +5,6 @@
     "module": "NodeNext",
     "rootDir": "./src",
     "moduleResolution": "NodeNext",
-    "isolatedModules": true,
     "baseUrl": "./",
     "sourceMap": true,
     "outDir": "./dist",

tsconfig.lint.json

@@ -1,9 +0,0 @@
-{
-  "$schema": "https://json.schemastore.org/tsconfig",
-  "extends": "./tsconfig.json",
-  "compilerOptions": {
-    "noEmit": true
-  },
-  "include": ["./__tests__/**/*", "./src/**/*"],
-  "exclude": ["./dist", "./node_modules", "./coverage", "*.json"]
-}