Update RELEASES.md

Updates release notes for @actions/cache v3.2.3

jest.config.js

@@ -8,4 +8,4 @@ module.exports = {
     '^.+\\.ts$': 'ts-jest'
   },
   verbose: true
-}
+}

package-lock.json

@@ -5781,9 +5781,9 @@
       }
     },
     "node_modules/follow-redirects": {
-      "version": "1.15.2",
-      "resolved": "https://registry.npmjs.org/follow-redirects/-/follow-redirects-1.15.2.tgz",
-      "integrity": "sha512-VQLG33o04KaQ8uYi2tVNbdrWp1QWxNNea+nmIB4EVM28v0hmP17z7aG1+wAkNzVq4KeXTq3221ye5qTJP91JwA==",
+      "version": "1.15.4",
+      "resolved": "https://registry.npmjs.org/follow-redirects/-/follow-redirects-1.15.4.tgz",
+      "integrity": "sha512-Cr4D/5wlrb0z9dgERpUL3LrmPKVDsETIJhaCMeDfuFYcqa5bldGV6wBsAN6X/vxlXQtFBMrXdXxdL8CbDTGniw==",
       "dev": true,
       "funding": [
         {

package.json

@@ -13,7 +13,7 @@
     "lint": "eslint packages/**/*.ts",
     "lint-fix": "eslint packages/**/*.ts --fix",
     "new-package": "scripts/create-package",
-    "test": "jest --testTimeout 10000"
+    "test": "jest --testTimeout 60000"
   },
   "devDependencies": {
     "@types/jest": "^29.5.4",

packages/artifact/README.md

@@ -19,7 +19,7 @@ This is the core library that powers the [`@actions/upload-artifact`](https://gi
 ## v2 - What's New
 
 > [!IMPORTANT]
-> @actions/artifact v2+, upload-artifact@v4+ download-artifact@v4+ are not currently supported on GHES yet. The previous version of this package can be found at [this tag](https://github.com/actions/toolkit/tree/@actions/artifact@1.1.2/packages/artifact) and [on npm](https://www.npmjs.com/package/@actions/artifact/v/1.1.2).
+> @actions/artifact v2+, upload-artifact@v4+, and download-artifact@v4+ are not currently supported on GHES yet. The previous version of this package can be found at [this tag](https://github.com/actions/toolkit/tree/@actions/artifact@1.1.2/packages/artifact) and [on npm](https://www.npmjs.com/package/@actions/artifact/v/1.1.2).
 
 The release of `@actions/artifact@v2` (including `upload-artifact@v4` and `download-artifact@v4`) are major changes to the backend architecture of Artifacts. They have numerous performance and behavioral improvements.
 

packages/artifact/RELEASES.md

@@ -97,7 +97,11 @@
 
 ### 2.0.0
 
-Major release. Supports new Artifact backend for improved speed, reliability and behavior.
-Numerous API changes, [some breaking](./README.md#breaking-changes).
+- Major release. Supports new Artifact backend for improved speed, reliability and behavior.
+- Numerous API changes, [some breaking](./README.md#breaking-changes).
 
-Blog post with more info: TBD
+- Blog post with more info: TBD
+
+### 2.0.1
+
+- Patch to fix transient request timeouts https://github.com/actions/download-artifact/issues/249

packages/artifact/__tests__/download-artifact.test.ts

@@ -9,7 +9,8 @@ import archiver from 'archiver'
 
 import {
   downloadArtifactInternal,
-  downloadArtifactPublic
+  downloadArtifactPublic,
+  streamExtractExternal
 } from '../src/internal/download/download-artifact'
 import {getUserAgentString} from '../src/internal/shared/user-agent'
 import {noopLogs} from './common'
@@ -248,7 +249,44 @@ describe('download-artifact', () => {
       })
     })
 
-    it('should fail if blob storage response is non-200', async () => {
+    it('should fail if blob storage storage chunk does not respond within 30s', async () => {
+      // mock http client to delay response data by 30s
+      const msg = new http.IncomingMessage(new net.Socket())
+      msg.statusCode = 200
+
+      const mockGet = jest.fn(async () => {
+        return new Promise((resolve, reject) => {
+          // Resolve with a 200 status code immediately
+          resolve({
+            message: msg,
+            readBody: async () => {
+              return Promise.resolve(`{"ok": true}`)
+            }
+          })
+
+          // Reject with an error after 31 seconds
+          setTimeout(() => {
+            reject(new Error('Request timeout'))
+          }, 31000) // Timeout after 31 seconds
+        })
+      })
+
+      const mockHttpClient = (HttpClient as jest.Mock).mockImplementation(
+        () => {
+          return {
+            get: mockGet
+          }
+        }
+      )
+
+      await expect(
+        streamExtractExternal(fixtures.blobStorageUrl, fixtures.workspaceDir)
+      ).rejects.toBeInstanceOf(Error)
+
+      expect(mockHttpClient).toHaveBeenCalledWith(getUserAgentString())
+    }, 35000) // add longer timeout to allow for timer to run out
+
+    it('should fail if blob storage response is non-200 after 5 retries', async () => {
       const downloadArtifactMock = github.getOctokit(fixtures.token).rest
         .actions.downloadArtifact as MockedDownloadArtifact
       downloadArtifactMock.mockResolvedValueOnce({
@@ -290,7 +328,60 @@ describe('download-artifact', () => {
       expect(mockGetArtifactFailure).toHaveBeenCalledWith(
         fixtures.blobStorageUrl
       )
-    })
+      expect(mockGetArtifactFailure).toHaveBeenCalledTimes(5)
+    }, 38000)
+
+    it('should retry if blob storage response is non-200 and then succeed with a 200', async () => {
+      const downloadArtifactMock = github.getOctokit(fixtures.token).rest
+        .actions.downloadArtifact as MockedDownloadArtifact
+      downloadArtifactMock.mockResolvedValueOnce({
+        headers: {
+          location: fixtures.blobStorageUrl
+        },
+        status: 302,
+        url: '',
+        data: Buffer.from('')
+      })
+
+      const mockGetArtifact = jest
+        .fn(mockGetArtifactSuccess)
+        .mockImplementationOnce(mockGetArtifactFailure)
+
+      const mockHttpClient = (HttpClient as jest.Mock).mockImplementation(
+        () => {
+          return {
+            get: mockGetArtifact
+          }
+        }
+      )
+
+      const response = await downloadArtifactPublic(
+        fixtures.artifactID,
+        fixtures.repositoryOwner,
+        fixtures.repositoryName,
+        fixtures.token
+      )
+
+      expect(downloadArtifactMock).toHaveBeenCalledWith({
+        owner: fixtures.repositoryOwner,
+        repo: fixtures.repositoryName,
+        artifact_id: fixtures.artifactID,
+        archive_format: 'zip',
+        request: {
+          redirect: 'manual'
+        }
+      })
+      expect(mockHttpClient).toHaveBeenCalledWith(getUserAgentString())
+      expect(mockGetArtifactFailure).toHaveBeenCalledWith(
+        fixtures.blobStorageUrl
+      )
+      expect(mockGetArtifactFailure).toHaveBeenCalledTimes(1)
+      expect(mockGetArtifactSuccess).toHaveBeenCalledWith(
+        fixtures.blobStorageUrl
+      )
+      expect(mockGetArtifactSuccess).toHaveBeenCalledTimes(1)
+      expect(response.downloadPath).toBe(fixtures.workspaceDir)
+    }, 28000)
   })
 
   describe('internal', () => {

packages/artifact/package-lock.json

@@ -1,12 +1,12 @@
 {
   "name": "@actions/artifact",
-  "version": "2.0.0",
+  "version": "2.0.1",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "@actions/artifact",
-      "version": "2.0.0",
+      "version": "2.0.1",
       "license": "MIT",
       "dependencies": {
         "@actions/core": "^1.10.0",
@@ -21,7 +21,6 @@
         "archiver": "^5.3.1",
         "crypto": "^1.0.1",
         "jwt-decode": "^3.1.2",
-        "nock": "^13.4.0",
         "twirp-ts": "^2.5.0",
         "unzip-stream": "^0.3.1"
       },
@@ -109,25 +108,6 @@
         "node": ">=14.0.0"
       }
     },
-    "node_modules/@azure/core-http/node_modules/node-fetch": {
-      "version": "2.7.0",
-      "resolved": "https://registry.npmjs.org/node-fetch/-/node-fetch-2.7.0.tgz",
-      "integrity": "sha512-c4FRfUm/dbcWZ7U+1Wq0AwCyFL+3nt2bEw05wfxSz+DWpWsitgmSgYmy2dQdWyKC1694ELPqMs/YzUSNozLt8A==",
-      "dependencies": {
-        "whatwg-url": "^5.0.0"
-      },
-      "engines": {
-        "node": "4.x || >=6.0.0"
-      },
-      "peerDependencies": {
-        "encoding": "^0.1.0"
-      },
-      "peerDependenciesMeta": {
-        "encoding": {
-          "optional": true
-        }
-      }
-    },
     "node_modules/@azure/core-lro": {
       "version": "2.5.4",
       "resolved": "https://registry.npmjs.org/@azure/core-lro/-/core-lro-2.5.4.tgz",
@@ -352,25 +332,6 @@
         "once": "^1.4.0"
       }
     },
-    "node_modules/@octokit/request/node_modules/node-fetch": {
-      "version": "2.7.0",
-      "resolved": "https://registry.npmjs.org/node-fetch/-/node-fetch-2.7.0.tgz",
-      "integrity": "sha512-c4FRfUm/dbcWZ7U+1Wq0AwCyFL+3nt2bEw05wfxSz+DWpWsitgmSgYmy2dQdWyKC1694ELPqMs/YzUSNozLt8A==",
-      "dependencies": {
-        "whatwg-url": "^5.0.0"
-      },
-      "engines": {
-        "node": "4.x || >=6.0.0"
-      },
-      "peerDependencies": {
-        "encoding": "^0.1.0"
-      },
-      "peerDependenciesMeta": {
-        "encoding": {
-          "optional": true
-        }
-      }
-    },
     "node_modules/@octokit/types": {
       "version": "6.41.0",
       "resolved": "https://registry.npmjs.org/@octokit/types/-/types-6.41.0.tgz",
@@ -795,22 +756,6 @@
       "integrity": "sha512-VxBKmeNcqQdiUQUW2Tzq0t377b54N2bMtXO/qiLa+6eRRmmC4qT3D4OnTGoT/U6O9aklQ/jTwbOtRMTTY8G0Ig==",
       "deprecated": "This package is no longer supported. It's now a built-in Node module. If you've depended on crypto, you should switch to the one that's built-in."
     },
-    "node_modules/debug": {
-      "version": "4.3.4",
-      "resolved": "https://registry.npmjs.org/debug/-/debug-4.3.4.tgz",
-      "integrity": "sha512-PRWFHuSU3eDtQJPvnNY7Jcket1j0t5OuOsFzPPzsekD52Zl8qUfFIPEiswXqIvHWGVHOgX+7G/vCNNhehwxfkQ==",
-      "dependencies": {
-        "ms": "2.1.2"
-      },
-      "engines": {
-        "node": ">=6.0"
-      },
-      "peerDependenciesMeta": {
-        "supports-color": {
-          "optional": true
-        }
-      }
-    },
     "node_modules/delayed-stream": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/delayed-stream/-/delayed-stream-1.0.0.tgz",
@@ -966,11 +911,6 @@
       "resolved": "https://registry.npmjs.org/isarray/-/isarray-1.0.0.tgz",
       "integrity": "sha512-VLghIWNM6ELQzo7zwmcg0NmTVyWKYjvIeM83yjp0wRDTmUnrM678fQbcKBo6n2CJEF0szoG//ytg+TKla89ALQ=="
     },
-    "node_modules/json-stringify-safe": {
-      "version": "5.0.1",
-      "resolved": "https://registry.npmjs.org/json-stringify-safe/-/json-stringify-safe-5.0.1.tgz",
-      "integrity": "sha512-ZClg6AaYvamvYEE82d3Iyd3vSSIjQ+odgjaTzRuO3s7toCdFKczob2i0zCh7JE8kWn17yvAWhUVxvqGwUalsRA=="
-    },
     "node_modules/jsonc-parser": {
       "version": "3.2.0",
       "resolved": "https://registry.npmjs.org/jsonc-parser/-/jsonc-parser-3.2.0.tgz",
@@ -1125,11 +1065,6 @@
         "mkdirp": "bin/cmd.js"
       }
     },
-    "node_modules/ms": {
-      "version": "2.1.2",
-      "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.2.tgz",
-      "integrity": "sha512-sGkPx+VjMtmA6MX27oA4FBFELFCZZ4S4XqeGOXCv68tT+jb3vk/RyaKWP0PTKyWtmLSM0b+adUTEvbs1PEaH2w=="
-    },
     "node_modules/neo-async": {
       "version": "2.6.2",
       "resolved": "https://registry.npmjs.org/neo-async/-/neo-async-2.6.2.tgz",
@@ -1145,17 +1080,23 @@
         "tslib": "^2.0.3"
       }
     },
-    "node_modules/nock": {
-      "version": "13.4.0",
-      "resolved": "https://registry.npmjs.org/nock/-/nock-13.4.0.tgz",
-      "integrity": "sha512-W8NVHjO/LCTNA64yxAPHV/K47LpGYcVzgKd3Q0n6owhwvD0Dgoterc25R4rnZbckJEb6Loxz1f5QMuJpJnbSyQ==",
+    "node_modules/node-fetch": {
+      "version": "2.6.12",
+      "resolved": "https://registry.npmjs.org/node-fetch/-/node-fetch-2.6.12.tgz",
+      "integrity": "sha512-C/fGU2E8ToujUivIO0H+tpQ6HWo4eEmchoPIoXtxCrVghxdKq+QOHqEZW7tuP3KlV3bC8FRMO5nMCC7Zm1VP6g==",
       "dependencies": {
-        "debug": "^4.1.0",
-        "json-stringify-safe": "^5.0.1",
-        "propagate": "^2.0.0"
+        "whatwg-url": "^5.0.0"
       },
       "engines": {
-        "node": ">= 10.13"
+        "node": "4.x || >=6.0.0"
+      },
+      "peerDependencies": {
+        "encoding": "^0.1.0"
+      },
+      "peerDependenciesMeta": {
+        "encoding": {
+          "optional": true
+        }
       }
     },
     "node_modules/normalize-path": {
@@ -1223,14 +1164,6 @@
       "resolved": "https://registry.npmjs.org/process-nextick-args/-/process-nextick-args-2.0.1.tgz",
       "integrity": "sha512-3ouUOpQhtgrbOa17J7+uxOTpITYWaGP7/AhoR3+A+/1e9skrzelGi/dXzEYyvbxubEF6Wn2ypscTKiKJFFn1ag=="
     },
-    "node_modules/propagate": {
-      "version": "2.0.1",
-      "resolved": "https://registry.npmjs.org/propagate/-/propagate-2.0.1.tgz",
-      "integrity": "sha512-vGrhOavPSTz4QVNuBNdcNXePNdNMaO1xj9yBeH1ScQPjk/rhg9sSlCXPhMkFuaNNW/syTvYqsnbIJxMBfRbbag==",
-      "engines": {
-        "node": ">= 8"
-      }
-    },
     "node_modules/readable-stream": {
       "version": "3.6.2",
       "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-3.6.2.tgz",

packages/artifact/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@actions/artifact",
-  "version": "2.0.0",
+  "version": "2.0.1",
   "preview": true,
   "description": "Actions artifact lib",
   "keywords": [
@@ -52,7 +52,6 @@
     "archiver": "^5.3.1",
     "crypto": "^1.0.1",
     "jwt-decode": "^3.1.2",
-    "nock": "^13.4.0",
     "twirp-ts": "^2.5.0",
     "unzip-stream": "^0.3.1"
   },
@@ -63,4 +62,4 @@
     "typedoc-plugin-markdown": "^3.17.1",
     "typescript": "^5.2.2"
   }
-}
+}

packages/artifact/src/internal/download/download-artifact.ts

@@ -38,20 +38,65 @@ async function exists(path: string): Promise<boolean> {
 }
 
 async function streamExtract(url: string, directory: string): Promise<void> {
+  let retryCount = 0
+  while (retryCount < 5) {
+    try {
+      await streamExtractExternal(url, directory)
+      return
+    } catch (error) {
+      retryCount++
+      core.debug(
+        `Failed to download artifact after ${retryCount} retries due to ${error.message}. Retrying in 5 seconds...`
+      )
+      // wait 5 seconds before retrying
+      await new Promise(resolve => setTimeout(resolve, 5000))
+    }
+  }
+
+  throw new Error(`Artifact download failed after ${retryCount} retries.`)
+}
+
+export async function streamExtractExternal(
+  url: string,
+  directory: string
+): Promise<void> {
   const client = new httpClient.HttpClient(getUserAgentString())
   const response = await client.get(url)
-
   if (response.message.statusCode !== 200) {
     throw new Error(
       `Unexpected HTTP response from blob storage: ${response.message.statusCode} ${response.message.statusMessage}`
     )
   }
 
+  const timeout = 30 * 1000 // 30 seconds
+
   return new Promise((resolve, reject) => {
+    const timerFn = (): void => {
+      response.message.destroy(
+        new Error(`Blob storage chunk did not respond in ${timeout}ms`)
+      )
+    }
+    const timer = setTimeout(timerFn, timeout)
+
     response.message
+      .on('data', () => {
+        timer.refresh()
+      })
+      .on('error', (error: Error) => {
+        core.debug(
+          `response.message: Artifact download failed: ${error.message}`
+        )
+        clearTimeout(timer)
+        reject(error)
+      })
       .pipe(unzip.Extract({path: directory}))
-      .on('close', resolve)
-      .on('error', reject)
+      .on('close', () => {
+        clearTimeout(timer)
+        resolve()
+      })
+      .on('error', (error: Error) => {
+        reject(error)
+      })
   })
 }
 

packages/artifact/src/internal/shared/interfaces.ts

@@ -45,21 +45,6 @@ export interface UploadArtifactOptions {
    * For large files that are not easily compressed, a value of 0 is recommended for significantly faster uploads.
    */
   compressionLevel?: number
-  /**
-   * The simulated network error we'll temporarily use to test the azure blob
-   * client behavior.
-   * The value can range from 0 to 6
-   * 0 - fetchError
-   * 1 - abortError
-   * 2 - networkError
-   * 3 - securityError
-   * 4 - notAllowedError
-   * 5 - quotaExceededError
-   * 6 - random
-   * 7 - none
-   *
-   */
-  simulateError?: number
 }
 
 /**

packages/artifact/src/internal/upload/blob-upload.ts

@@ -5,17 +5,8 @@ import {getUploadChunkSize, getConcurrency} from '../shared/config'
 import * as core from '@actions/core'
 import * as crypto from 'crypto'
 import * as stream from 'stream'
-import nock from 'nock'
 import {NetworkError} from '../shared/errors'
 
-export const DEFAULT_ERROR_NUMBER = 7
-export const ERROR_TYPES = [
-  'fetchError',
-  'abortError',
-  'securityError',
-  'notAllowedError',
-  'quotaExceededError'
-]
 export interface BlobUploadResponse {
   /**
    * The total reported upload size in bytes. Empty if the upload failed
@@ -27,58 +18,10 @@ export interface BlobUploadResponse {
    */
   sha256Hash?: string
 }
-export async function sendSimulatedError(
-  simulatedError: number,
-  authenticatedUploadURL: string
-): Promise<void> {
-  switch (simulatedError) {
-    case 0: {
-      nock(authenticatedUploadURL).get('/').replyWithError({
-        code: 'ECONNRESET',
-        message: 'socket hang up'
-      })
-      break
-    }
-    case 1: {
-      const controller = new AbortController()
-      controller.abort()
-      break
-    }
-    case 2: {
-      nock(authenticatedUploadURL).get('/').replyWithError({
-        code: 'ETIMEDOUT'
-      })
-      break
-    }
-    case 3: {
-      nock(authenticatedUploadURL).get('/').reply(403)
-      break
-    }
-    case 4: {
-      nock(authenticatedUploadURL).get('/').reply(405)
-      break
-    }
-    case 5: {
-      nock(authenticatedUploadURL).get('/').reply(429)
-      break
-    }
-    case 6: {
-      const rand = Math.floor(Math.random() * ERROR_TYPES.length)
-      sendSimulatedError(rand, authenticatedUploadURL)
-      break
-    }
-    case 7: {
-      core.info('no error selected')
-      break
-    }
-    default:
-      core.error('something went wrong')
-  }
-}
+
 export async function uploadZipToBlobStorage(
   authenticatedUploadURL: string,
-  zipUploadStream: ZipUploadStream,
-  simulatedError: number = DEFAULT_ERROR_NUMBER
+  zipUploadStream: ZipUploadStream
 ): Promise<BlobUploadResponse> {
   let uploadByteCount = 0
 
@@ -93,9 +36,6 @@ export async function uploadZipToBlobStorage(
 
   const uploadCallback = (progress: TransferProgressEvent): void => {
     core.info(`Uploaded bytes ${progress.loadedBytes}`)
-    if (progress.loadedBytes > 1) {
-      sendSimulatedError(simulatedError, authenticatedUploadURL)
-    }
     uploadByteCount = progress.loadedBytes
   }
 

packages/artifact/src/internal/upload/upload-artifact.ts

@@ -76,8 +76,7 @@ export async function uploadArtifact(
   // Upload zip to blob storage
   const uploadResult = await uploadZipToBlobStorage(
     createArtifactResp.signedUploadUrl,
-    zipUploadStream,
-    options?.simulateError
+    zipUploadStream
   )
 
   // finalize the artifact

packages/cache/RELEASES.md

@@ -164,3 +164,7 @@
 ### 3.2.2
 
 - Add new default cache download method to improve performance and reduce hangs [#1484](https://github.com/actions/toolkit/pull/1484)
+
+### 3.2.3
+
+- Fixed a bug that mutated path arguments to `getCacheVersion` [#1378](https://github.com/actions/toolkit/pull/1378)

packages/cache/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@actions/cache",
-  "version": "3.2.2",
+  "version": "3.2.3",
   "preview": true,
   "description": "Actions cache lib",
   "keywords": [

packages/cache/src/internal/cacheHttpClient.ts

@@ -80,7 +80,8 @@ export function getCacheVersion(
   compressionMethod?: CompressionMethod,
   enableCrossOsArchive = false
 ): string {
-  const components = paths
+  // don't pass changes upstream
+  const components = paths.slice()
 
   // Add compression method to cache version to restore
   // compressed cache as per compression method

packages/core/README.md

@@ -358,3 +358,129 @@ const {
   version, // 10.0.22621
 } = await platform.getDetails()
 ```
+
+#### Populating job summary
+
+These methods can be used to populate a [job summary](https://docs.github.com/en/actions/using-workflows/workflow-commands-for-github-actions#adding-a-job-summary). A job summary is a buffer that can be added to throughout your job via `core.summary` methods.
+
+Job summaries when complete must be written to the summary buffer file via the `core.summary.write()` method.
+
+All methods except `addRaw()` utilize the `addRaw()` method to append to the buffer, followed by an EOL using the `addEOL()` method.
+
+```typescript
+
+// Write raw text, optionally add an EOL after the content, defaults to false
+core.summary.addRaw('Some content here :speech_balloon:', true)
+// Output: Some content here :speech_balloon:\n
+
+// Add an operating system-specific end-of-line marker
+core.summary.addEOL()
+// Output (POSIX): \n
+// Output (Windows): \r\n
+
+// Add a codeblock with an optional language for syntax highlighting
+core.summary.addCodeBlock('console.log(\'hello world\')', 'javascript')
+// Output: <pre lang="javascript"><code>console.log('hello world')</code></pre>
+
+// Add a list, second parameter indicates if list is ordered, defaults to false
+core.summary.addList(['item1','item2','item3'], true)
+// Output: <ol><li>item1</li><li>item2</li><li>item3</li></ol>
+
+// Add a collapsible HTML details element
+core.summary.addDetails('Label', 'Some detail that will be collapsed')
+// Output: <details><summary>Label</summary>Some detail that will be collapsed</details>
+
+// Add an image, image options parameter is optional, you can supply one of or both width and height in pixels
+core.summary.addImage('example.png', 'alt description of img', {width: '100', height: '100'})
+// Output: <img src="example.png" alt="alt description of img" width="100" height="100">
+
+// Add an HTML section heading element, optionally pass a level that translates to 'hX' ie. h2. Defaults to h1
+core.summary.addHeading('My Heading', '2')
+// Output: <h2>My Heading</h2>
+
+// Add an HTML thematic break <hr>
+core.summary.addSeparator()
+// Output: <hr>
+
+// Add an HTML line break <br>
+core.summary.addBreak()
+// Output: <br>
+
+// Add an HTML blockquote with an optional citation
+core.summary.addQuote('To be or not to be', 'Shakespeare')
+// Output: <blockquote cite="Shakespeare">To be or not to be</blockquote>
+
+// Add an HTML anchor tag
+core.summary.addLink('click here', 'https://github.com')
+// Output: <a href="https://github.com">click here</a>
+
+```
+
+Tables are added using the `addTable()` method, and an array of `SummaryTableRow`.
+
+```typescript
+
+export type SummaryTableRow = (SummaryTableCell | string)[]
+
+export interface SummaryTableCell {
+  /**
+   * Cell content
+   */
+  data: string
+  /**
+   * Render cell as header
+   * (optional) default: false
+   */
+  header?: boolean
+  /**
+   * Number of columns the cell extends
+   * (optional) default: '1'
+   */
+  colspan?: string
+  /**
+   * Number of rows the cell extends
+   * (optional) default: '1'
+   */
+  rowspan?: string
+}
+
+```
+
+For example
+
+```typescript
+
+const tableData = [
+  {data: 'Header1', header: true},
+  {data: 'Header2', header: true},
+  {data: 'Header3', header: true},
+  {data: 'MyData1'},
+  {data: 'MyData2'},
+  {data: 'MyData3'}
+]
+
+// Add an HTML table
+core.summary.addTable([tableData])
+// Output: <table><tr><th>Header1</th><th>Header2</th><th>Header3</th></tr><tr></tr><td>MyData1</td><td>MyData2</td><td>MyData3</td></tr></table>
+
+```
+
+In addition to job summary content, there are utility functions for interfacing with the buffer.
+
+```typescript
+
+// Empties the summary buffer AND wipes the summary file on disk
+core.summary.clear()
+
+// Returns the current summary buffer as a string
+core.summary.stringify()
+
+// If the summary buffer is empty
+core.summary.isEmptyBuffer()
+
+// Resets the summary buffer without writing to the summary file on disk
+core.summary.emptyBuffer()
+
+// Writes text in the buffer to the summary buffer file and empties the buffer, optionally overwriting all existing content in the summary file with buffer contents. Defaults to false.
+core.summary.write({overwrite: true})
+```