Prepare 1.6.0 release

Bump handlebars from 4.1.2 to 4.5.3

README.md

@@ -12,6 +12,8 @@ This action will create a github release and optionally upload an artifact to it
 - **commit**: An optional commit reference. This will be used to create the tag if it does not exist.
 - **draft**: Optionally marks this release as a draft release. Set to `true` to enable.
 - **name**: An optional name for the release. If this is omitted the tag will be used.
+- **prerelease**: Optionally marks this release as prerelease. Set to true to enable.
+- **replacesArtifacts**: Indicates if existing release artifacts should be replaced. Defaults to true.
 - **tag**: An optional tag for the release. If this is omitted the git ref will be used (if it is a tag).
 - **token**: (**Required**) The Github token. Typically this will be `${{ secrets.GITHUB_TOKEN }}`.
 

__tests__/Action.test.ts

@@ -5,7 +5,10 @@ import { Releases } from "../src/Releases";
 import { ArtifactUploader } from "../src/ArtifactUploader";
 
 const createMock = jest.fn()
+const deleteMock = jest.fn()
 const getMock = jest.fn()
+const listArtifactsMock = jest.fn()
+const listMock = jest.fn()
 const updateMock = jest.fn()
 const uploadMock = jest.fn()
 
@@ -19,6 +22,9 @@ const commit = 'commit'
 const draft = true
 const id = 100
 const name = 'name'
+const prerelease = true
+const releaseId = 101
+const replacesArtifacts = true
 const tag = 'tag'
 const token = 'token'
 const url = 'http://api.example.com'
@@ -27,6 +33,7 @@ describe("Action", () => {
     beforeEach(() => {
         createMock.mockClear()
         getMock.mockClear()
+        listMock.mockClear()
         updateMock.mockClear()
         uploadMock.mockClear()
     })
@@ -36,17 +43,45 @@ describe("Action", () => {
 
         await action.perform()
 
-        expect(createMock).toBeCalledWith(tag, body, commit, draft, name)
+        expect(createMock).toBeCalledWith(tag, body, commit, draft, name, prerelease)
         expect(uploadMock).not.toBeCalled()
     })
 
+    it('creates release if no release exists to update', async () => {
+        const action = createAction(true, true)
+        const error = { status: 404 }
+        getMock.mockRejectedValue(error)
+
+        await action.perform()
+
+        expect(createMock).toBeCalledWith(tag, body, commit, draft, name, prerelease)
+        expect(uploadMock).toBeCalledWith(artifacts, releaseId, url)
+    })
+
+    it('creates release if no draft releases', async () => {
+        const action = createAction(true, true)
+        const error = { status: 404 }
+        getMock.mockRejectedValue(error)
+        listMock.mockResolvedValue({
+            data: [
+                { id: id, draft: false, tag_name: tag }
+            ]
+        })
+
+        await action.perform()
+
+        expect(createMock).toBeCalledWith(tag, body, commit, draft, name, prerelease)
+        expect(uploadMock).toBeCalledWith(artifacts, releaseId, url)
+
+    })
+
     it('creates release then uploads artifact', async () => {
         const action = createAction(false, true)
 
         await action.perform()
 
-        expect(createMock).toBeCalledWith(tag, body, commit, draft, name)
+        expect(createMock).toBeCalledWith(tag, body, commit, draft, name, prerelease)
-        expect(uploadMock).toBeCalledWith(artifacts, url)
+        expect(uploadMock).toBeCalledWith(artifacts, releaseId, url)
     })
 
     it('throws error when create fails', async () => {
@@ -60,12 +95,12 @@ describe("Action", () => {
             expect(error).toEqual("error")
         }
 
-        expect(createMock).toBeCalledWith(tag, body, commit, draft, name)
+        expect(createMock).toBeCalledWith(tag, body, commit, draft, name, prerelease)
         expect(uploadMock).not.toBeCalled()
     })
 
     it('throws error when get fails', async () => {
-        const action = createAction(true, false)
+        const action = createAction(true, true)
         const error = {
             errors: [
                 {
@@ -83,23 +118,17 @@ describe("Action", () => {
             expect(error).toEqual("error")
         }
 
-        expect(createMock).toBeCalledWith(tag, body, commit, draft, name)
+        expect(getMock).toBeCalledWith(tag)
+        expect(updateMock).not.toBeCalled()
         expect(uploadMock).not.toBeCalled()
 
     })
 
     it('throws error when update fails', async () => {
-        const action = createAction(true, false)
+        const action = createAction(true, true)
-        const error = {
-            errors: [
-                {
-                    code: 'already_exists'
-                }
-            ]
-        }
 
-        createMock.mockRejectedValue(error)
         updateMock.mockRejectedValue("error")
+
         expect.hasAssertions()
         try {
             await action.perform()
@@ -107,9 +136,8 @@ describe("Action", () => {
             expect(error).toEqual("error")
         }
 
-        expect(createMock).toBeCalledWith(tag, body, commit, draft, name)
+        expect(updateMock).toBeCalledWith(id, tag, body, commit, draft, name, prerelease)
         expect(uploadMock).not.toBeCalled()
-        
     })
 
     it('throws error when upload fails', async () => {
@@ -123,45 +151,45 @@ describe("Action", () => {
             expect(error).toEqual("error")
         }
 
-        expect(createMock).toBeCalledWith(tag, body, commit, draft, name)
+        expect(createMock).toBeCalledWith(tag, body, commit, draft, name, prerelease)
-        expect(uploadMock).toBeCalledWith(artifacts, url)
+        expect(uploadMock).toBeCalledWith(artifacts, releaseId, url)
+    })
+
+    it('updates draft release', async () => {
+        const action = createAction(true, true)
+        const error = { status: 404 }
+        getMock.mockRejectedValue(error)
+        listMock.mockResolvedValue({
+            data: [
+                { id: 123, draft: false, tag_name: tag },
+                { id: id, draft: true, tag_name: tag }
+            ]
+        })
+
+        await action.perform()
+
+        expect(updateMock).toBeCalledWith(id, tag, body, commit, draft, name, prerelease)
+        expect(uploadMock).toBeCalledWith(artifacts, releaseId, url)
+
     })
 
     it('updates release but does not upload if no artifact', async () => {
         const action = createAction(true, false)
-        const error = {
-            errors: [
-                {
-                    code: 'already_exists'
-                }
-            ]
-        }
-        
-        createMock.mockRejectedValue(error)
 
         await action.perform()
 
-        expect(createMock).toBeCalledWith(tag, body, commit, draft, name)
+        expect(updateMock).toBeCalledWith(id, tag, body, commit, draft, name, prerelease)
         expect(uploadMock).not.toBeCalled()
 
     })
 
     it('updates release then uploads artifact', async () => {
         const action = createAction(true, true)
-        const error = {
-            errors: [
-                {
-                    code: 'already_exists'
-                }
-            ]
-        }
-        
-        createMock.mockRejectedValue(error)
 
         await action.perform()
 
-        expect(createMock).toBeCalledWith(tag, body, commit, draft, name)
+        expect(updateMock).toBeCalledWith(id, tag, body, commit, draft, name, prerelease)
-        expect(uploadMock).toBeCalledWith(artifacts, url)
+        expect(uploadMock).toBeCalledWith(artifacts, releaseId, url)
 
     })
 
@@ -175,14 +203,18 @@ describe("Action", () => {
         const MockReleases = jest.fn<Releases, any>(() => {
             return {
                 create: createMock,
+                deleteArtifact: deleteMock,
                 getByTag: getMock,
+                listArtifactsForRelease: listArtifactsMock,
+                listReleases: listMock,
                 update: updateMock,
-                uploadArtifact: uploadMock
+                uploadArtifact: jest.fn()
             }
         })
 
         createMock.mockResolvedValue({
             data: {
+                id: releaseId,
                 upload_url: url
             }
         })
@@ -191,8 +223,12 @@ describe("Action", () => {
                 id: id
             }
         })
+        listMock.mockResolvedValue({
+            data: []
+        })
         updateMock.mockResolvedValue({
             data: {
+                id: releaseId,
                 upload_url: url
             }
         })
@@ -206,6 +242,8 @@ describe("Action", () => {
                 commit: commit,
                 draft: draft,
                 name: name,
+                prerelease: prerelease,
+                replacesArtifacts: replacesArtifacts,
                 tag: tag,
                 token: token,
                 readArtifact: () => artifactData

__tests__/ArtifactUploader.test.ts

@@ -8,9 +8,13 @@ const artifacts = [
 ]
 const fileContents = Buffer.from('artful facts', 'utf-8')
 const contentLength = 42
-const uploadMock = jest.fn()
+const releaseId = 100
 const url = 'http://api.example.com'
 
+const deleteMock = jest.fn()
+const listArtifactsMock = jest.fn()
+const uploadMock = jest.fn()
+
 jest.mock('fs', () => {
     return {
         readFileSync: () => fileContents,
@@ -19,27 +23,115 @@ jest.mock('fs', () => {
 })
 
 describe('ArtifactUploader', () => {
-    it('uploads artifacts', () => {
+    beforeEach(() => {
-        const uploader = createUploader()
+        deleteMock.mockClear()
+        listArtifactsMock.mockClear()
+        uploadMock.mockClear()
+    })
 
-        uploader.uploadArtifacts(artifacts, url)
+    it('replaces all artifacts', async () => {
+        mockDeleteSuccess()
+        mockListWithAssets()
+        const uploader = createUploader(true)
+
+        await uploader.uploadArtifacts(artifacts, releaseId, url)
 
         expect(uploadMock).toBeCalledTimes(2)
         expect(uploadMock)
             .toBeCalledWith(url, contentLength, 'raw', fileContents, 'art1')
         expect(uploadMock)
             .toBeCalledWith(url, contentLength, 'raw', fileContents, 'art2')
+
+        expect(deleteMock).toBeCalledTimes(2)
+        expect(deleteMock).toBeCalledWith(1)
+        expect(deleteMock).toBeCalledWith(2)
     })
     
-    function createUploader(): GithubArtifactUploader {
+    it('replaces no artifacts when previous asset list empty', async () => {
+        mockDeleteSuccess()
+        mockListWithoutAssets()
+        const uploader = createUploader(true)
+
+        await uploader.uploadArtifacts(artifacts, releaseId, url)
+
+        expect(uploadMock).toBeCalledTimes(2)
+        expect(uploadMock)
+            .toBeCalledWith(url, contentLength, 'raw', fileContents, 'art1')
+        expect(uploadMock)
+            .toBeCalledWith(url, contentLength, 'raw', fileContents, 'art2')
+
+        expect(deleteMock).toBeCalledTimes(0)
+    })
+
+    it('throws error from replace', async () => {
+        mockDeleteError()
+        mockListWithAssets()
+        const uploader = createUploader(true)
+
+        expect.hasAssertions()
+        try {
+            await uploader.uploadArtifacts(artifacts, releaseId, url)
+        } catch (error) {
+            expect(error).toEqual("error")
+        }
+    })
+
+    it('updates all artifacts, delete none', async () => {
+        mockDeleteError()
+        mockListWithAssets()
+        const uploader = createUploader(false)
+
+        await uploader.uploadArtifacts(artifacts, releaseId, url)
+
+        expect(uploadMock).toBeCalledTimes(2)
+        expect(uploadMock)
+            .toBeCalledWith(url, contentLength, 'raw', fileContents, 'art1')
+        expect(uploadMock)
+            .toBeCalledWith(url, contentLength, 'raw', fileContents, 'art2')
+
+        expect(deleteMock).toBeCalledTimes(0)
+    })
+
+    function createUploader(replaces: boolean): GithubArtifactUploader {
+        uploadMock.mockResolvedValue({})
         const MockReleases = jest.fn<Releases, any>(() => {
             return {
-                getByTag: jest.fn(),
                 create: jest.fn(),
+                deleteArtifact: deleteMock,
+                getByTag: jest.fn(),
+                listArtifactsForRelease: listArtifactsMock,
+                listReleases: jest.fn(),
                 update: jest.fn(),
                 uploadArtifact: uploadMock
             }
         })
-        return new GithubArtifactUploader(new MockReleases())
+        return new GithubArtifactUploader(new MockReleases(), replaces)
+    }
+
+    function mockDeleteError(): any {
+        deleteMock.mockRejectedValue("error")
+    }
+
+    function mockDeleteSuccess(): any {
+        deleteMock.mockResolvedValue({})
+    }
+
+    function mockListWithAssets() {
+        listArtifactsMock.mockResolvedValue({
+            data: [
+                {
+                    name: "art1",
+                    id: 1
+                },
+                {
+                    name: "art2",
+                    id: 2
+                }
+            ]
+        })
+    }
+
+    function mockListWithoutAssets() {
+        listArtifactsMock.mockResolvedValue({ data: [] })
     }
 });

__tests__/ErrorMessage.test.ts

@@ -14,15 +14,16 @@ describe('ErrorMessage', () => {
                     code: 'already_exists',
                     resource: 'release'
                 }
-            ]
+            ],
+            status: 422
         }
 
-        it('does not have error', ()=> {
+        it('does not have error', () => {
             const errorMessage = new ErrorMessage(error)
             expect(errorMessage.hasErrorWithCode('missing_field')).toBeFalsy()
         })
 
-        it('has error', ()=> {
+        it('has error', () => {
             const errorMessage = new ErrorMessage(error)
             expect(errorMessage.hasErrorWithCode('missing')).toBeTruthy()
         })
@@ -41,22 +42,30 @@ describe('ErrorMessage', () => {
                     code: 'already_exists',
                     resource: 'release'
                 }
-            ]
+            ],
+            status: 422
         }
 
         const errorMessage = new ErrorMessage(error)
 
-        const expectedString = "something bad happened\nErrors:\n- release does not exist.\n- release already exists."
+        const expectedString = "Error 422: something bad happened\nErrors:\n- release does not exist.\n- release already exists."
         expect(errorMessage.toString()).toBe(expectedString)
     })
 
     it('generates message without errors', () => {
         const error = {
-            message: 'something bad happened'
+            message: 'something bad happened',
+            status: 422
         }
 
         const errorMessage = new ErrorMessage(error)
 
-        expect(errorMessage.toString()).toBe('something bad happened')
+        expect(errorMessage.toString()).toBe('Error 422: something bad happened')
+    })
+
+    it('provides error status', () => {
+        const error = { status: 404 }
+        const errorMessage = new ErrorMessage(error)
+        expect(errorMessage.status).toBe(404)
     })
 })

__tests__/Inputs.test.ts

@@ -133,6 +133,28 @@ describe('Inputs', () => {
         })
     })
 
+    describe('prerelase', () => {
+        it('returns false', () => {
+            expect(inputs.prerelease).toBe(false)
+        })
+
+        it('returns true', () => {
+            mockGetInput.mockReturnValue('true')
+            expect(inputs.prerelease).toBe(true)
+        })
+    })
+
+    describe('replacesArtifacts', () => {
+        it('returns false', () => {
+            expect(inputs.replacesArtifacts).toBe(false)
+        })
+
+        it('returns true', () => {
+            mockGetInput.mockReturnValue('true')
+            expect(inputs.replacesArtifacts).toBe(true)
+        })
+    })
+
     describe('tag', () => {
         it('returns input tag', () => {
             mockGetInput.mockReturnValue('tag')

action.yml

@@ -29,6 +29,12 @@ inputs:
   name:
     description: 'An optional name for the release. If this is omitted the tag will be used.'
     default: ''
+  prerelease:
+    description: "Optionally marks this release as prerelease. Set to true to enable."
+    default: ''
+  replacesArtifacts:
+    description: "Indicates if existing release artifacts should be replaced. Defaults to true."
+    default: 'true'  
   tag:
     description: 'An optional tag for the release. If this is omitted the git ref will be used (if it is a tag).'
     default: ''

lib/Action.js

@@ -18,44 +18,71 @@ class Action {
     }
     perform() {
         return __awaiter(this, void 0, void 0, function* () {
-            const uploadUrl = yield this.createOrUpdateRelease();
+            const releaseResponse = yield this.createOrUpdateRelease();
+            const releaseId = releaseResponse.id;
+            const uploadUrl = releaseResponse.upload_url;
             const artifacts = this.inputs.artifacts;
             if (artifacts.length > 0) {
-                yield this.uploader.uploadArtifacts(artifacts, uploadUrl);
+                yield this.uploader.uploadArtifacts(artifacts, releaseId, uploadUrl);
             }
         });
     }
     createOrUpdateRelease() {
         return __awaiter(this, void 0, void 0, function* () {
-            try {
+            if (this.inputs.allowUpdates) {
+                try {
+                    const getResponse = yield this.releases.getByTag(this.inputs.tag);
+                    return yield this.updateRelease(getResponse.data.id);
+                }
+                catch (error) {
+                    if (this.noPublishedRelease(error)) {
+                        return yield this.updateDraftOrCreateRelease();
+                    }
+                    else {
+                        throw error;
+                    }
+                }
+            }
+            else {
                 return yield this.createRelease();
             }
-            catch (error) {
+        });
-                if (this.releaseAlreadyExisted(error) && this.inputs.allowUpdates) {
+    }
-                    return this.updateRelease();
+    updateRelease(id) {
-                }
+        return __awaiter(this, void 0, void 0, function* () {
-                else {
+            const response = yield this.releases.update(id, this.inputs.tag, this.inputs.body, this.inputs.commit, this.inputs.draft, this.inputs.name, this.inputs.prerelease);
-                    throw error;
+            return response.data;
-                }
+        });
+    }
+    noPublishedRelease(error) {
+        const errorMessage = new ErrorMessage_1.ErrorMessage(error);
+        return errorMessage.status == 404;
+    }
+    updateDraftOrCreateRelease() {
+        return __awaiter(this, void 0, void 0, function* () {
+            const draftReleaseId = yield this.findMatchingDraftReleaseId();
+            if (draftReleaseId) {
+                return yield this.updateRelease(draftReleaseId);
             }
+            else {
+                return yield this.createRelease();
+            }
+        });
+    }
+    findMatchingDraftReleaseId() {
+        var _a;
+        return __awaiter(this, void 0, void 0, function* () {
+            const tag = this.inputs.tag;
+            const response = yield this.releases.listReleases();
+            const releases = response.data;
+            const draftRelease = releases.find(release => release.draft && release.tag_name == tag);
+            return (_a = draftRelease) === null || _a === void 0 ? void 0 : _a.id;
         });
     }
     createRelease() {
         return __awaiter(this, void 0, void 0, function* () {
-            const response = yield this.releases.create(this.inputs.tag, this.inputs.body, this.inputs.commit, this.inputs.draft, this.inputs.name);
+            const response = yield this.releases.create(this.inputs.tag, this.inputs.body, this.inputs.commit, this.inputs.draft, this.inputs.name, this.inputs.prerelease);
-            return response.data.upload_url;
+            return response.data;
-        });
-    }
-    releaseAlreadyExisted(error) {
-        const errorMessage = new ErrorMessage_1.ErrorMessage(error);
-        return errorMessage.hasErrorWithCode('already_exists');
-    }
-    updateRelease() {
-        return __awaiter(this, void 0, void 0, function* () {
-            const getResponse = yield this.releases.getByTag(this.inputs.tag);
-            const id = getResponse.data.id;
-            const response = yield this.releases.update(id, this.inputs.tag, this.inputs.body, this.inputs.commit, this.inputs.draft, this.inputs.name);
-            return response.data.upload_url;
         });
     }
 }

lib/ArtifactUploader.js

@@ -8,16 +8,52 @@ var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, ge
         step((generator = generator.apply(thisArg, _arguments || [])).next());
     });
 };
+var __importStar = (this && this.__importStar) || function (mod) {
+    if (mod && mod.__esModule) return mod;
+    var result = {};
+    if (mod != null) for (var k in mod) if (Object.hasOwnProperty.call(mod, k)) result[k] = mod[k];
+    result["default"] = mod;
+    return result;
+};
 Object.defineProperty(exports, "__esModule", { value: true });
+const core = __importStar(require("@actions/core"));
 class GithubArtifactUploader {
-    constructor(releases) {
+    constructor(releases, replacesExistingArtifacts) {
+        this.replacesExistingArtifacts = true;
         this.releases = releases;
+        this.replacesExistingArtifacts = replacesExistingArtifacts;
     }
-    uploadArtifacts(artifacts, uploadUrl) {
+    uploadArtifacts(artifacts, releaseId, uploadUrl) {
         return __awaiter(this, void 0, void 0, function* () {
-            artifacts.forEach((artifact) => __awaiter(this, void 0, void 0, function* () {
+            if (this.replacesExistingArtifacts) {
-                yield this.releases.uploadArtifact(uploadUrl, artifact.contentLength, artifact.contentType, artifact.readFile(), artifact.name);
+                yield this.deleteUpdatedArtifacts(artifacts, releaseId);
-            }));
+            }
+            for (const artifact of artifacts) {
+                try {
+                    yield this.releases.uploadArtifact(uploadUrl, artifact.contentLength, artifact.contentType, artifact.readFile(), artifact.name);
+                }
+                catch (error) {
+                    const message = `Failed to upload artifact ${artifact.name}. Does it already exist?`;
+                    core.warning(message);
+                }
+            }
+            return Promise.resolve();
+        });
+    }
+    deleteUpdatedArtifacts(artifacts, releaseId) {
+        return __awaiter(this, void 0, void 0, function* () {
+            const response = yield this.releases.listArtifactsForRelease(releaseId);
+            const releaseAssets = response.data;
+            const assetByName = new Map();
+            releaseAssets.forEach(asset => {
+                assetByName[asset.name] = asset;
+            });
+            for (const artifact of artifacts) {
+                const asset = assetByName[artifact.name];
+                if (asset) {
+                    yield this.releases.deleteArtifact(asset.id);
+                }
+            }
         });
     }
 }

lib/ErrorMessage.js

@@ -15,17 +15,21 @@ class ErrorMessage {
             return [];
         }
     }
+    get status() {
+        return this.error.status;
+    }
     hasErrorWithCode(code) {
         return this.githubErrors.some((err) => err.code == code);
     }
     toString() {
         const message = this.error.message;
         const errors = this.githubErrors;
+        const status = this.status;
         if (errors.length > 0) {
-            return `${message}\nErrors:\n${this.errorBulletedList(errors)}`;
+            return `Error ${status}: ${message}\nErrors:\n${this.errorBulletedList(errors)}`;
         }
         else {
-            return message;
+            return `Error ${status}: ${message}`;
         }
     }
     errorBulletedList(errors) {

lib/Inputs.js

@@ -58,6 +58,14 @@ class CoreInputs {
         }
         return this.tag;
     }
+    get prerelease() {
+        const preRelease = core.getInput('prerelease');
+        return preRelease == 'true';
+    }
+    get replacesArtifacts() {
+        const replaces = core.getInput('replacesArtifacts');
+        return replaces == 'true';
+    }
     get tag() {
         const tag = core.getInput('tag');
         if (tag) {

lib/Main.js

@@ -43,7 +43,7 @@ function createAction() {
     const globber = new ArtifactGlobber_1.FileArtifactGlobber();
     const inputs = new Inputs_1.CoreInputs(globber, context);
     const releases = new Releases_1.GithubReleases(context, git);
-    const uploader = new ArtifactUploader_1.GithubArtifactUploader(releases);
+    const uploader = new ArtifactUploader_1.GithubArtifactUploader(releases, inputs.replacesArtifacts);
     return new Action_1.Action(inputs, releases, uploader);
 }
 run();

lib/Releases.js

@@ -14,19 +14,46 @@ class GithubReleases {
         this.context = context;
         this.git = git;
     }
-    create(tag, body, commitHash, draft, name) {
+    create(tag, body, commitHash, draft, name, prerelease) {
         return __awaiter(this, void 0, void 0, function* () {
             return this.git.repos.createRelease({
                 body: body,
                 name: name,
                 draft: draft,
                 owner: this.context.repo.owner,
+                prerelease: prerelease,
                 repo: this.context.repo.repo,
                 target_commitish: commitHash,
                 tag_name: tag
             });
         });
     }
+    deleteArtifact(assetId) {
+        return __awaiter(this, void 0, void 0, function* () {
+            return this.git.repos.deleteReleaseAsset({
+                asset_id: assetId,
+                owner: this.context.repo.owner,
+                repo: this.context.repo.repo
+            });
+        });
+    }
+    listArtifactsForRelease(releaseId) {
+        return __awaiter(this, void 0, void 0, function* () {
+            return this.git.repos.listAssetsForRelease({
+                owner: this.context.repo.owner,
+                release_id: releaseId,
+                repo: this.context.repo.repo
+            });
+        });
+    }
+    listReleases() {
+        return __awaiter(this, void 0, void 0, function* () {
+            return this.git.repos.listReleases({
+                owner: this.context.repo.owner,
+                repo: this.context.repo.repo
+            });
+        });
+    }
     getByTag(tag) {
         return __awaiter(this, void 0, void 0, function* () {
             return this.git.repos.getReleaseByTag({
@@ -36,7 +63,7 @@ class GithubReleases {
             });
         });
     }
-    update(id, tag, body, commitHash, draft, name) {
+    update(id, tag, body, commitHash, draft, name, prerelease) {
         return __awaiter(this, void 0, void 0, function* () {
             return this.git.repos.updateRelease({
                 release_id: id,
@@ -44,6 +71,7 @@ class GithubReleases {
                 name: name,
                 draft: draft,
                 owner: this.context.repo.owner,
+                prerelease: prerelease,
                 repo: this.context.repo.repo,
                 target_commitish: commitHash,
                 tag_name: tag

node_modules/.yarn-integrity

@@ -11,14 +11,14 @@
     "@actions/core@^1.0.0",
     "@actions/github@^1.0.0",
     "@types/glob@^7.1.1",
-    "@types/jest@^24.0.13",
+    "@types/jest@^24.0.25",
     "@types/node@^12.0.4",
     "add@^2.0.6",
     "glob@^7.1.4",
     "global@^4.4.0",
     "jest-circus@^24.7.1",
-    "jest@^24.8.0",
+    "jest@^24.9.0",
-    "ts-jest@^24.0.2",
+    "ts-jest@^24.2.0",
     "typescript@^3.7.3"
   ],
   "lockfileEntries": {
@@ -81,8 +81,7 @@
     "@types/istanbul-lib-coverage@^2.0.0": "https://registry.yarnpkg.com/@types/istanbul-lib-coverage/-/istanbul-lib-coverage-2.0.1.tgz#42995b446db9a48a11a07ec083499a860e9138ff",
     "@types/istanbul-lib-report@*": "https://registry.yarnpkg.com/@types/istanbul-lib-report/-/istanbul-lib-report-1.1.1.tgz#e5471e7fa33c61358dd38426189c037a58433b8c",
     "@types/istanbul-reports@^1.1.1": "https://registry.yarnpkg.com/@types/istanbul-reports/-/istanbul-reports-1.1.1.tgz#7a8cbf6a406f36c8add871625b278eaf0b0d255a",
-    "@types/jest-diff@*": "https://registry.yarnpkg.com/@types/jest-diff/-/jest-diff-20.0.1.tgz#35cc15b9c4f30a18ef21852e255fdb02f6d59b89",
+    "@types/jest@^24.0.25": "https://registry.yarnpkg.com/@types/jest/-/jest-24.0.25.tgz#2aba377824ce040114aa906ad2cac2c85351360f",
-    "@types/jest@^24.0.13": "https://registry.yarnpkg.com/@types/jest/-/jest-24.0.18.tgz#9c7858d450c59e2164a8a9df0905fc5091944498",
     "@types/minimatch@*": "https://registry.yarnpkg.com/@types/minimatch/-/minimatch-3.0.3.tgz#3dca0e3f33b200fc7d1139c0cd96c1268cadfd9d",
     "@types/node@*": "https://registry.yarnpkg.com/@types/node/-/node-12.7.3.tgz#27b3f40addaf2f580459fdb405222685542f907a",
     "@types/node@^12.0.4": "https://registry.yarnpkg.com/@types/node/-/node-12.7.2.tgz#c4e63af5e8823ce9cc3f0b34f7b998c2171f0c44",
@@ -161,7 +160,7 @@
     "color-name@1.1.3": "https://registry.yarnpkg.com/color-name/-/color-name-1.1.3.tgz#a7d0558bd89c42f795dd42328f740831ca53bc25",
     "combined-stream@^1.0.6": "https://registry.yarnpkg.com/combined-stream/-/combined-stream-1.0.8.tgz#c3d45a8b34fd730631a110a8a2520682b31d5a7f",
     "combined-stream@~1.0.6": "https://registry.yarnpkg.com/combined-stream/-/combined-stream-1.0.8.tgz#c3d45a8b34fd730631a110a8a2520682b31d5a7f",
-    "commander@~2.20.0": "https://registry.yarnpkg.com/commander/-/commander-2.20.0.tgz#d58bb2b5c1ee8f87b0d340027e9e94e222c5a422",
+    "commander@~2.20.3": "https://registry.yarnpkg.com/commander/-/commander-2.20.3.tgz#fd485e84c03eb4881c20722ba48035e8531aeb33",
     "component-emitter@^1.2.1": "https://registry.yarnpkg.com/component-emitter/-/component-emitter-1.3.0.tgz#16e4070fba8ae29b679f2215853ee181ab2eabc0",
     "concat-map@0.0.1": "https://registry.yarnpkg.com/concat-map/-/concat-map-0.0.1.tgz#d8a96bd77fd68df7793a73036a3ba0d5405d477b",
     "console-control-strings@^1.0.0": "https://registry.yarnpkg.com/console-control-strings/-/console-control-strings-1.1.0.tgz#3d7cf4464db6446ea644bf4b39507f9851008e8e",
@@ -253,7 +252,7 @@
     "graceful-fs@^4.1.15": "https://registry.yarnpkg.com/graceful-fs/-/graceful-fs-4.2.2.tgz#6f0952605d0140c1cfdb138ed005775b92d67b02",
     "graceful-fs@^4.1.2": "https://registry.yarnpkg.com/graceful-fs/-/graceful-fs-4.2.2.tgz#6f0952605d0140c1cfdb138ed005775b92d67b02",
     "growly@^1.3.0": "https://registry.yarnpkg.com/growly/-/growly-1.3.0.tgz#f10748cbe76af964b7c96c93c6bcc28af120c081",
-    "handlebars@^4.1.2": "https://registry.yarnpkg.com/handlebars/-/handlebars-4.1.2.tgz#b6b37c1ced0306b221e094fc7aca3ec23b131b67",
+    "handlebars@^4.1.2": "https://registry.yarnpkg.com/handlebars/-/handlebars-4.5.3.tgz#5cf75bd8714f7605713511a56be7c349becb0482",
     "har-schema@^2.0.0": "https://registry.yarnpkg.com/har-schema/-/har-schema-2.0.0.tgz#a94c2224ebcac04782a0d9035521f24735b7ec92",
     "har-validator@~5.1.0": "https://registry.yarnpkg.com/har-validator/-/har-validator-5.1.3.tgz#1ef89ebd3e4996557675eed9893110dc350fa080",
     "has-flag@^3.0.0": "https://registry.yarnpkg.com/has-flag/-/has-flag-3.0.0.tgz#b5d454dc2199ae225699f3467e5a07f3b955bafd",
@@ -325,6 +324,7 @@
     "jest-circus@^24.7.1": "https://registry.yarnpkg.com/jest-circus/-/jest-circus-24.9.0.tgz#8a557683636807d537507eac02ba64c95b686485",
     "jest-cli@^24.9.0": "https://registry.yarnpkg.com/jest-cli/-/jest-cli-24.9.0.tgz#ad2de62d07472d419c6abc301fc432b98b10d2af",
     "jest-config@^24.9.0": "https://registry.yarnpkg.com/jest-config/-/jest-config-24.9.0.tgz#fb1bbc60c73a46af03590719efa4825e6e4dd1b5",
+    "jest-diff@^24.3.0": "https://registry.yarnpkg.com/jest-diff/-/jest-diff-24.9.0.tgz#931b7d0d5778a1baf7452cb816e325e3724055da",
     "jest-diff@^24.9.0": "https://registry.yarnpkg.com/jest-diff/-/jest-diff-24.9.0.tgz#931b7d0d5778a1baf7452cb816e325e3724055da",
     "jest-docblock@^24.3.0": "https://registry.yarnpkg.com/jest-docblock/-/jest-docblock-24.9.0.tgz#7970201802ba560e1c4092cc25cbedf5af5a8ce2",
     "jest-each@^24.9.0": "https://registry.yarnpkg.com/jest-each/-/jest-each-24.9.0.tgz#eb2da602e2a610898dbc5f1f6df3ba86b55f8b05",
@@ -351,7 +351,7 @@
     "jest-watcher@^24.9.0": "https://registry.yarnpkg.com/jest-watcher/-/jest-watcher-24.9.0.tgz#4b56e5d1ceff005f5b88e528dc9afc8dd4ed2b3b",
     "jest-worker@^24.6.0": "https://registry.yarnpkg.com/jest-worker/-/jest-worker-24.9.0.tgz#5dbfdb5b2d322e98567898238a9697bcce67b3e5",
     "jest-worker@^24.9.0": "https://registry.yarnpkg.com/jest-worker/-/jest-worker-24.9.0.tgz#5dbfdb5b2d322e98567898238a9697bcce67b3e5",
-    "jest@^24.8.0": "https://registry.yarnpkg.com/jest/-/jest-24.9.0.tgz#987d290c05a08b52c56188c1002e368edb007171",
+    "jest@^24.9.0": "https://registry.yarnpkg.com/jest/-/jest-24.9.0.tgz#987d290c05a08b52c56188c1002e368edb007171",
     "js-tokens@^3.0.0 || ^4.0.0": "https://registry.yarnpkg.com/js-tokens/-/js-tokens-4.0.0.tgz#19203fb59991df98e3a287050d4647cdeaf32499",
     "js-tokens@^4.0.0": "https://registry.yarnpkg.com/js-tokens/-/js-tokens-4.0.0.tgz#19203fb59991df98e3a287050d4647cdeaf32499",
     "jsbn@~0.1.0": "https://registry.yarnpkg.com/jsbn/-/jsbn-0.1.1.tgz#a5e654c2e5a2deb5f201d96cefbca80c0ef2f513",
@@ -378,6 +378,7 @@
     "load-json-file@^4.0.0": "https://registry.yarnpkg.com/load-json-file/-/load-json-file-4.0.0.tgz#2f5f45ab91e33216234fd53adab668eb4ec0993b",
     "locate-path@^3.0.0": "https://registry.yarnpkg.com/locate-path/-/locate-path-3.0.0.tgz#dbec3b3ab759758071b58fe59fc41871af21400e",
     "lodash.get@^4.4.2": "https://registry.yarnpkg.com/lodash.get/-/lodash.get-4.4.2.tgz#2d177f652fa31e939b4438d5341499dfa3825e99",
+    "lodash.memoize@4.x": "https://registry.yarnpkg.com/lodash.memoize/-/lodash.memoize-4.1.2.tgz#bcc6c49a42a2840ed997f323eada5ecd182e0bfe",
     "lodash.set@^4.3.2": "https://registry.yarnpkg.com/lodash.set/-/lodash.set-4.3.2.tgz#d8757b1da807dde24816b0d6a84bea1a76230b23",
     "lodash.sortby@^4.7.0": "https://registry.yarnpkg.com/lodash.sortby/-/lodash.sortby-4.7.0.tgz#edd14c824e2cc9c1e0b0a1b42bb5210516a42438",
     "lodash.uniq@^4.5.0": "https://registry.yarnpkg.com/lodash.uniq/-/lodash.uniq-4.5.0.tgz#d0225373aeb652adc1bc82e4945339a842754773",
@@ -593,13 +594,13 @@
     "tough-cookie@~2.4.3": "https://registry.yarnpkg.com/tough-cookie/-/tough-cookie-2.4.3.tgz#53f36da3f47783b0925afa06ff9f3b165280f781",
     "tr46@^1.0.1": "https://registry.yarnpkg.com/tr46/-/tr46-1.0.1.tgz#a8b13fd6bfd2489519674ccde55ba3693b706d09",
     "trim-right@^1.0.1": "https://registry.yarnpkg.com/trim-right/-/trim-right-1.0.1.tgz#cb2e1203067e0c8de1f614094b9fe45704ea6003",
-    "ts-jest@^24.0.2": "https://registry.yarnpkg.com/ts-jest/-/ts-jest-24.0.2.tgz#8dde6cece97c31c03e80e474c749753ffd27194d",
+    "ts-jest@^24.2.0": "https://registry.yarnpkg.com/ts-jest/-/ts-jest-24.2.0.tgz#7abca28c2b4b0a1fdd715cd667d65d047ea4e768",
     "tunnel-agent@^0.6.0": "https://registry.yarnpkg.com/tunnel-agent/-/tunnel-agent-0.6.0.tgz#27a5dea06b36b04a0a9966774b290868f0fc40fd",
     "tweetnacl@^0.14.3": "https://registry.yarnpkg.com/tweetnacl/-/tweetnacl-0.14.5.tgz#5ae68177f192d4456269d108afa93ff8743f4f64",
     "tweetnacl@~0.14.0": "https://registry.yarnpkg.com/tweetnacl/-/tweetnacl-0.14.5.tgz#5ae68177f192d4456269d108afa93ff8743f4f64",
     "type-check@~0.3.2": "https://registry.yarnpkg.com/type-check/-/type-check-0.3.2.tgz#5884cab512cf1d355e3fb784f30804b2b520db72",
     "typescript@^3.7.3": "https://registry.yarnpkg.com/typescript/-/typescript-3.7.3.tgz#b36840668a16458a7025b9eabfad11b66ab85c69",
-    "uglify-js@^3.1.4": "https://registry.yarnpkg.com/uglify-js/-/uglify-js-3.6.0.tgz#704681345c53a8b2079fb6cec294b05ead242ff5",
+    "uglify-js@^3.1.4": "https://registry.yarnpkg.com/uglify-js/-/uglify-js-3.7.3.tgz#f918fce9182f466d5140f24bb0ff35c2d32dcc6a",
     "union-value@^1.0.0": "https://registry.yarnpkg.com/union-value/-/union-value-1.0.1.tgz#0b6fe7b835aecda61c6ea4d4f02c14221e109847",
     "universal-user-agent@^2.0.3": "https://registry.yarnpkg.com/universal-user-agent/-/universal-user-agent-2.1.0.tgz#5abfbcc036a1ba490cb941f8fd68c46d3669e8e4",
     "universal-user-agent@^3.0.0": "https://registry.yarnpkg.com/universal-user-agent/-/universal-user-agent-3.0.0.tgz#4cc88d68097bffd7ac42e3b7c903e7481424b4b9",
@@ -643,5 +644,13 @@
     "yargs@^13.3.0": "https://registry.yarnpkg.com/yargs/-/yargs-13.3.0.tgz#4c657a55e07e5f2cf947f8a366567c04a0dedc83"
   },
   "files": [],
-  "artifacts": {}
+  "artifacts": {
+    "fsevents@1.2.9": [
+      "lib",
+      "lib/binding",
+      "lib/binding/Release",
+      "lib/binding/Release/node-v72-darwin-x64",
+      "lib/binding/Release/node-v72-darwin-x64/fse.node"
+    ]
+  }
 }

package.json

@@ -32,10 +32,10 @@
     "global": "^4.4.0"
   },
   "devDependencies": {
-    "@types/jest": "^24.0.13",
+    "@types/jest": "^24.0.25",
-    "jest": "^24.8.0",
+    "jest": "^24.9.0",
     "jest-circus": "^24.7.1",
-    "ts-jest": "^24.0.2",
+    "ts-jest": "^24.2.0",
     "typescript": "^3.7.3"
   }
 }

src/Action.ts

@@ -1,5 +1,6 @@
 import { Inputs } from "./Inputs";
 import { Releases } from "./Releases";
+import { ReposCreateReleaseResponse } from "@octokit/rest";
 import { ArtifactUploader } from "./ArtifactUploader";
 import { ErrorMessage } from "./ErrorMessage";
 
@@ -15,56 +16,80 @@ export class Action {
     }
 
     async perform() {
-        const uploadUrl = await this.createOrUpdateRelease()
+        const releaseResponse = await this.createOrUpdateRelease();
+        const releaseId = releaseResponse.id
+        const uploadUrl = releaseResponse.upload_url
 
         const artifacts = this.inputs.artifacts
         if (artifacts.length > 0) {
-            await this.uploader.uploadArtifacts(artifacts, uploadUrl)
+            await this.uploader.uploadArtifacts(artifacts, releaseId, uploadUrl)
         }
     }
 
-    private async createOrUpdateRelease(): Promise<string> {
+    private async createOrUpdateRelease(): Promise<ReposCreateReleaseResponse> {
-        try {
+        if (this.inputs.allowUpdates) {
-            return await this.createRelease()
+            try {
-        } catch (error) {
+                const getResponse = await this.releases.getByTag(this.inputs.tag)
-            if (this.releaseAlreadyExisted(error) && this.inputs.allowUpdates) {
+                return await this.updateRelease(getResponse.data.id)
-                return this.updateRelease()
+            } catch (error) {
-            } else {
+                if (this.noPublishedRelease(error)) {
-                throw error
+                    return await this.updateDraftOrCreateRelease()
+                } else {
+                    throw error
+                }
             }
+        } else {
+            return await this.createRelease()
         }
     }
 
-    private async createRelease(): Promise<string> {
+    private async updateRelease(id: number): Promise<ReposCreateReleaseResponse> {
-        const response = await this.releases.create(
-            this.inputs.tag,
-            this.inputs.body,
-            this.inputs.commit,
-            this.inputs.draft,
-            this.inputs.name
-        )
-
-        return response.data.upload_url
-    }
-
-    private releaseAlreadyExisted(error: any): boolean {
-        const errorMessage = new ErrorMessage(error)
-        return errorMessage.hasErrorWithCode('already_exists')
-    }
-
-    private async updateRelease(): Promise<string> {
-        const getResponse = await this.releases.getByTag(this.inputs.tag)
-        const id = getResponse.data.id
-
         const response = await this.releases.update(
             id,
             this.inputs.tag,
             this.inputs.body,
             this.inputs.commit,
             this.inputs.draft,
-            this.inputs.name
+            this.inputs.name,
+            this.inputs.prerelease
         )
 
-        return response.data.upload_url
+        return response.data
+    }
+
+    private noPublishedRelease(error: any): boolean {
+        const errorMessage = new ErrorMessage(error)
+        return errorMessage.status == 404
+    }
+
+    private async updateDraftOrCreateRelease(): Promise<ReposCreateReleaseResponse> {
+        const draftReleaseId = await this.findMatchingDraftReleaseId()
+        if (draftReleaseId) {
+            return await this.updateRelease(draftReleaseId)
+        } else {
+            return await this.createRelease()
+        }
+    }
+
+    private async findMatchingDraftReleaseId(): Promise<number | undefined> {
+        const tag = this.inputs.tag
+        const response = await this.releases.listReleases()
+        const releases = response.data
+        const draftRelease = releases.find(release => release.draft && release.tag_name == tag)
+
+        return draftRelease?.id
+    }
+
+    private async createRelease(): Promise<ReposCreateReleaseResponse> {
+        const response = await this.releases.create(
+            this.inputs.tag,
+            this.inputs.body,
+            this.inputs.commit,
+            this.inputs.draft,
+            this.inputs.name,
+            this.inputs.prerelease
+        )
+
+        return response.data
     }
 }

src/ArtifactUploader.ts

@@ -1,24 +1,56 @@
+import * as core from '@actions/core';
 import { Artifact } from "./Artifact";
 import { Releases } from "./Releases";
+import { ReposListAssetsForReleaseResponseItem } from "@octokit/rest";
+import { ErrorMessage } from './ErrorMessage';
 
 export interface ArtifactUploader {
-    uploadArtifacts(artifacts: Artifact[], uploadUrl: string): Promise<void>
+    uploadArtifacts(artifacts: Artifact[], releaseId: number, uploadUrl: string): Promise<void>
 }
 
 export class GithubArtifactUploader implements ArtifactUploader {
     private releases: Releases
+    private replacesExistingArtifacts: boolean = true
 
-    constructor(releases: Releases) {
+    constructor(releases: Releases, replacesExistingArtifacts: boolean) {
         this.releases = releases
+        this.replacesExistingArtifacts = replacesExistingArtifacts
     }
 
-    async uploadArtifacts(artifacts: Artifact[], uploadUrl: string) {
+    async uploadArtifacts(artifacts: Artifact[],
-        artifacts.forEach(async artifact => {
+        releaseId: number,
-            await this.releases.uploadArtifact(uploadUrl,
+        uploadUrl: string): Promise<void> {
-                artifact.contentLength,
+        if(this.replacesExistingArtifacts)  {
-                artifact.contentType,
+            await this.deleteUpdatedArtifacts(artifacts, releaseId)
-                artifact.readFile(),
+        }
-                artifact.name)
+
+        for (const artifact of artifacts) {
+            try {
+                await this.releases.uploadArtifact(uploadUrl,
+                    artifact.contentLength,
+                    artifact.contentType,
+                    artifact.readFile(),
+                    artifact.name)
+            } catch (error) {
+                const message = `Failed to upload artifact ${artifact.name}. Does it already exist?`
+                core.warning(message)
+            }
+        }
+        return Promise.resolve()
+    }
+
+    async deleteUpdatedArtifacts(artifacts: Artifact[], releaseId: number) {
+        const response = await this.releases.listArtifactsForRelease(releaseId)
+        const releaseAssets = response.data
+        const assetByName = new Map<string, ReposListAssetsForReleaseResponseItem>()
+        releaseAssets.forEach(asset => {
+            assetByName[asset.name] = asset
         });
+        for (const artifact of artifacts) {
+            const asset = assetByName[artifact.name]
+            if (asset) {
+                await this.releases.deleteArtifact(asset.id)
+            }
+        }
     }
 }

src/ErrorMessage.ts

@@ -18,6 +18,10 @@ export class ErrorMessage {
         }
     }
 
+    get status():number {
+        return this.error.status
+    }
+
     hasErrorWithCode(code: String): boolean {
         return this.githubErrors.some((err) => err.code == code)
     }
@@ -25,10 +29,11 @@ export class ErrorMessage {
     toString(): string {
         const message = this.error.message
         const errors = this.githubErrors
+        const status = this.status
         if (errors.length > 0) {
-            return `${message}\nErrors:\n${this.errorBulletedList(errors)}`
+            return `Error ${status}: ${message}\nErrors:\n${this.errorBulletedList(errors)}`
         } else {
-            return message
+            return `Error ${status}: ${message}`
         }
     }
 

src/Inputs.ts

@@ -11,6 +11,8 @@ export interface Inputs {
     readonly commit: string
     readonly draft: boolean
     readonly name: string
+    readonly prerelease: boolean
+    readonly replacesArtifacts: boolean
     readonly tag: string
     readonly token: string
 }
@@ -77,6 +79,16 @@ export class CoreInputs implements Inputs {
         return this.tag
     }
 
+    get prerelease(): boolean {
+        const preRelease = core.getInput('prerelease')
+        return preRelease == 'true'
+    }
+
+    get replacesArtifacts(): boolean {
+        const replaces = core.getInput('replacesArtifacts')
+        return replaces == 'true'
+    }
+
     get tag(): string {
         const tag = core.getInput('tag')
         if (tag) {

src/Main.ts

@@ -25,7 +25,7 @@ function createAction(): Action {
 
   const inputs = new CoreInputs(globber, context)
   const releases = new GithubReleases(context, git)
-  const uploader = new GithubArtifactUploader(releases)
+  const uploader = new GithubArtifactUploader(releases, inputs.replacesArtifacts)
   return new Action(inputs, releases, uploader)
 }
 

src/Releases.ts

@@ -1,6 +1,6 @@
 import { Context } from "@actions/github/lib/context";
 import { GitHub } from "@actions/github";
-import { AnyResponse, Response, ReposCreateReleaseResponse, ReposGetReleaseByTagResponse } from "@octokit/rest";
+import { AnyResponse, Response, ReposDeleteReleaseAssetResponse, ReposListAssetsForReleaseResponse, ReposCreateReleaseResponse, ReposGetReleaseByTagResponse, ReposListReleasesResponse } from "@octokit/rest";
 
 export interface Releases {
     create(
@@ -8,18 +8,26 @@ export interface Releases {
         body?: string,
         commitHash?: string,
         draft?: boolean,
-        name?: string
+        name?: string,
+        prerelease?: boolean
     ): Promise<Response<ReposCreateReleaseResponse>>
 
+    deleteArtifact(assetId: number): Promise<Response<ReposDeleteReleaseAssetResponse>>
+
     getByTag(tag: string): Promise<Response<ReposGetReleaseByTagResponse>>
 
+    listArtifactsForRelease(releaseId: number): Promise<Response<ReposListAssetsForReleaseResponse>>
+
+    listReleases(): Promise<Response<ReposListReleasesResponse>>
+
     update(
         id: number,
         tag: string,
         body?: string,
         commitHash?: string,
         draft?: boolean,
-        name?: string
+        name?: string,
+        prerelease?: boolean
     ): Promise<Response<ReposCreateReleaseResponse>>
 
     uploadArtifact(
@@ -45,19 +53,48 @@ export class GithubReleases implements Releases {
         body?: string,
         commitHash?: string,
         draft?: boolean,
-        name?: string
+        name?: string,
+        prerelease?: boolean
     ): Promise<Response<ReposCreateReleaseResponse>> {
         return this.git.repos.createRelease({
             body: body,
             name: name,
             draft: draft,
             owner: this.context.repo.owner,
+            prerelease: prerelease,
             repo: this.context.repo.repo,
             target_commitish: commitHash,
             tag_name: tag
         })
     }
 
+    async deleteArtifact(
+        assetId: number
+    ): Promise<Response<ReposDeleteReleaseAssetResponse>> {
+        return this.git.repos.deleteReleaseAsset({
+            asset_id: assetId,
+            owner: this.context.repo.owner,
+            repo: this.context.repo.repo
+        })
+    }
+
+    async listArtifactsForRelease(
+        releaseId: number
+    ): Promise<Response<ReposListAssetsForReleaseResponse>> {
+        return this.git.repos.listAssetsForRelease({
+            owner: this.context.repo.owner,
+            release_id: releaseId,
+            repo: this.context.repo.repo
+        })
+    }
+
+    async listReleases(): Promise<Response<ReposListReleasesResponse>> {
+        return this.git.repos.listReleases({
+            owner: this.context.repo.owner,
+            repo: this.context.repo.repo
+        })
+    }
+
     async getByTag(tag: string): Promise<Response<ReposGetReleaseByTagResponse>> {
         return this.git.repos.getReleaseByTag({
             owner: this.context.repo.owner,
@@ -72,7 +109,8 @@ export class GithubReleases implements Releases {
         body?: string,
         commitHash?: string,
         draft?: boolean,
-        name?: string
+        name?: string,
+        prerelease?: boolean
     ): Promise<Response<ReposCreateReleaseResponse>> {
         return this.git.repos.updateRelease({
             release_id: id,
@@ -80,6 +118,7 @@ export class GithubReleases implements Releases {
             name: name,
             draft: draft,
             owner: this.context.repo.owner,
+            prerelease: prerelease,
             repo: this.context.repo.repo,
             target_commitish: commitHash,
             tag_name: tag

yarn.lock

@@ -425,17 +425,12 @@
     "@types/istanbul-lib-coverage" "*"
     "@types/istanbul-lib-report" "*"
 
-"@types/jest-diff@*":
+"@types/jest@^24.0.25":
-  version "20.0.1"
+  version "24.0.25"
-  resolved "https://registry.yarnpkg.com/@types/jest-diff/-/jest-diff-20.0.1.tgz#35cc15b9c4f30a18ef21852e255fdb02f6d59b89"
+  resolved "https://registry.yarnpkg.com/@types/jest/-/jest-24.0.25.tgz#2aba377824ce040114aa906ad2cac2c85351360f"
-  integrity sha512-yALhelO3i0hqZwhjtcr6dYyaLoCHbAMshwtj6cGxTvHZAKXHsYGdff6E8EPw3xLKY0ELUTQ69Q1rQiJENnccMA==
+  integrity sha512-hnP1WpjN4KbGEK4dLayul6lgtys6FPz0UfxMeMQCv0M+sTnzN3ConfiO72jHgLxl119guHgI8gLqDOrRLsyp2g==
-
-"@types/jest@^24.0.13":
-  version "24.0.18"
-  resolved "https://registry.yarnpkg.com/@types/jest/-/jest-24.0.18.tgz#9c7858d450c59e2164a8a9df0905fc5091944498"
-  integrity sha512-jcDDXdjTcrQzdN06+TSVsPPqxvsZA/5QkYfIZlq1JMw7FdP5AZylbOc+6B/cuDurctRe+MziUMtQ3xQdrbjqyQ==
   dependencies:
-    "@types/jest-diff" "*"
+    jest-diff "^24.3.0"
 
 "@types/minimatch@*":
   version "3.0.3"
@@ -887,10 +882,10 @@ combined-stream@^1.0.6, combined-stream@~1.0.6:
   dependencies:
     delayed-stream "~1.0.0"
 
-commander@~2.20.0:
+commander@~2.20.3:
-  version "2.20.0"
+  version "2.20.3"
-  resolved "https://registry.yarnpkg.com/commander/-/commander-2.20.0.tgz#d58bb2b5c1ee8f87b0d340027e9e94e222c5a422"
+  resolved "https://registry.yarnpkg.com/commander/-/commander-2.20.3.tgz#fd485e84c03eb4881c20722ba48035e8531aeb33"
-  integrity sha512-7j2y+40w61zy6YC2iRNpUe/NwhNyoXrYpHMrSunaMG64nRnaf96zO/KMQR4OyN/UnE5KLyEBnKHd4aG3rskjpQ==
+  integrity sha512-GpVkmM8vF2vQUkj2LvZmD35JxeJOLCwJ9cUkugyk2nuhbv3+mJvpLYYt+0+USMxE+oj+ey/lJEnhZw75x/OMcQ==
 
 component-emitter@^1.2.1:
   version "1.3.0"
@@ -1416,9 +1411,9 @@ growly@^1.3.0:
   integrity sha1-8QdIy+dq+WS3yWyTxrzCivEgwIE=
 
 handlebars@^4.1.2:
-  version "4.1.2"
+  version "4.5.3"
-  resolved "https://registry.yarnpkg.com/handlebars/-/handlebars-4.1.2.tgz#b6b37c1ced0306b221e094fc7aca3ec23b131b67"
+  resolved "https://registry.yarnpkg.com/handlebars/-/handlebars-4.5.3.tgz#5cf75bd8714f7605713511a56be7c349becb0482"
-  integrity sha512-nvfrjqvt9xQ8Z/w0ijewdD/vvWDTOweBUm96NTr66Wfvo1mJenBLwcYmPs3TIBP5ruzYGD7Hx/DaM9RmhroGPw==
+  integrity sha512-3yPecJoJHK/4c6aZhSvxOyG4vJKDshV36VHp0iVCDVh7o9w2vwi3NSnL2MMPj3YdduqaBcu7cGbggJQM0br9xA==
   dependencies:
     neo-async "^2.6.0"
     optimist "^0.6.1"
@@ -1872,7 +1867,7 @@ jest-config@^24.9.0:
     pretty-format "^24.9.0"
     realpath-native "^1.1.0"
 
-jest-diff@^24.9.0:
+jest-diff@^24.3.0, jest-diff@^24.9.0:
   version "24.9.0"
   resolved "https://registry.yarnpkg.com/jest-diff/-/jest-diff-24.9.0.tgz#931b7d0d5778a1baf7452cb816e325e3724055da"
   integrity sha512-qMfrTs8AdJE2iqrTp0hzh7kTd2PQWrsFyj9tORoKmu32xjPjeE4NyjVRDz8ybYwqS2ik8N4hsIpiVTyFeo2lBQ==
@@ -2167,7 +2162,7 @@ jest-worker@^24.6.0, jest-worker@^24.9.0:
     merge-stream "^2.0.0"
     supports-color "^6.1.0"
 
-jest@^24.8.0:
+jest@^24.9.0:
   version "24.9.0"
   resolved "https://registry.yarnpkg.com/jest/-/jest-24.9.0.tgz#987d290c05a08b52c56188c1002e368edb007171"
   integrity sha512-YvkBL1Zm7d2B1+h5fHEOdyjCG+sGMz4f8D86/0HiqJ6MB4MnDc8FgP5vdWsGnemOQro7lnYo8UakZ3+5A0jxGw==
@@ -2329,6 +2324,11 @@ lodash.get@^4.4.2:
   resolved "https://registry.yarnpkg.com/lodash.get/-/lodash.get-4.4.2.tgz#2d177f652fa31e939b4438d5341499dfa3825e99"
   integrity sha1-LRd/ZS+jHpObRDjVNBSZ36OCXpk=
 
+lodash.memoize@4.x:
+  version "4.1.2"
+  resolved "https://registry.yarnpkg.com/lodash.memoize/-/lodash.memoize-4.1.2.tgz#bcc6c49a42a2840ed997f323eada5ecd182e0bfe"
+  integrity sha1-vMbEmkKihA7Zl/Mj6tpezRguC/4=
+
 lodash.set@^4.3.2:
   version "4.3.2"
   resolved "https://registry.yarnpkg.com/lodash.set/-/lodash.set-4.3.2.tgz#d8757b1da807dde24816b0d6a84bea1a76230b23"
@@ -3525,15 +3525,16 @@ trim-right@^1.0.1:
   resolved "https://registry.yarnpkg.com/trim-right/-/trim-right-1.0.1.tgz#cb2e1203067e0c8de1f614094b9fe45704ea6003"
   integrity sha1-yy4SAwZ+DI3h9hQJS5/kVwTqYAM=
 
-ts-jest@^24.0.2:
+ts-jest@^24.2.0:
-  version "24.0.2"
+  version "24.2.0"
-  resolved "https://registry.yarnpkg.com/ts-jest/-/ts-jest-24.0.2.tgz#8dde6cece97c31c03e80e474c749753ffd27194d"
+  resolved "https://registry.yarnpkg.com/ts-jest/-/ts-jest-24.2.0.tgz#7abca28c2b4b0a1fdd715cd667d65d047ea4e768"
-  integrity sha512-h6ZCZiA1EQgjczxq+uGLXQlNgeg02WWJBbeT8j6nyIBRQdglqbvzDoHahTEIiS6Eor6x8mK6PfZ7brQ9Q6tzHw==
+  integrity sha512-Yc+HLyldlIC9iIK8xEN7tV960Or56N49MDP7hubCZUeI7EbIOTsas6rXCMB4kQjLACJ7eDOF4xWEO5qumpKsag==
   dependencies:
     bs-logger "0.x"
     buffer-from "1.x"
     fast-json-stable-stringify "2.x"
     json5 "2.x"
+    lodash.memoize "4.x"
     make-error "1.x"
     mkdirp "0.x"
     resolve "1.x"
@@ -3565,11 +3566,11 @@ typescript@^3.7.3:
   integrity sha512-Mcr/Qk7hXqFBXMN7p7Lusj1ktCBydylfQM/FZCk5glCNQJrCUKPkMHdo9R0MTFWsC/4kPFvDS0fDPvukfCkFsw==
 
 uglify-js@^3.1.4:
-  version "3.6.0"
+  version "3.7.3"
-  resolved "https://registry.yarnpkg.com/uglify-js/-/uglify-js-3.6.0.tgz#704681345c53a8b2079fb6cec294b05ead242ff5"
+  resolved "https://registry.yarnpkg.com/uglify-js/-/uglify-js-3.7.3.tgz#f918fce9182f466d5140f24bb0ff35c2d32dcc6a"
-  integrity sha512-W+jrUHJr3DXKhrsS7NUVxn3zqMOFn0hL/Ei6v0anCIMoKC93TjcflTagwIHLW7SfMFfiQuktQyFVCFHGUE0+yg==
+  integrity sha512-7tINm46/3puUA4hCkKYo4Xdts+JDaVC9ZPRcG8Xw9R4nhO/gZgUM3TENq8IF4Vatk8qCig4MzP/c8G4u2BkVQg==
   dependencies:
-    commander "~2.20.0"
+    commander "~2.20.3"
     source-map "~0.6.1"
 
 union-value@^1.0.0: