Prepare 1.11.2

Build with security updates
Bump minimatch from 3.0.4 to 3.1.2 (#278 )
2022-11-11 14:17:14 -05:00 · 2022-11-11 13:54:21 -05:00 · 2022-11-11 13:50:46 -05:00 · 2022-11-11 13:48:23 -05:00 · 2022-11-11 13:48:06 -05:00 · 2022-11-11 13:46:22 -05:00
34 changed files with 7482 additions and 3479 deletions
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -11,7 +11,7 @@ jobs:
  check_pr:
    runs-on: ubuntu-latest
    steps:
-      - uses: actions/checkout@v2.4.0
+      - uses: actions/checkout@v3

      - name: "yarn install"
        run: yarn install
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -5,7 +5,7 @@ jobs:
  check_pr:
    runs-on: ubuntu-latest
    steps:
-    - uses: actions/checkout@v2.4.0
+    - uses: actions/checkout@v3

    - name: "yarn install"
      run: yarn install
--- a/.gitignore
+++ b/.gitignore
@@ -93,3 +93,6 @@ fabric.properties
 .idea/**/markdown-navigator/

 # End of https://www.gitignore.io/api/webstorm
+
+# Coverage
+coverage
--- a/README.md
+++ b/README.md
@@ -2,37 +2,52 @@

 This action will create a GitHub release and optionally upload an artifact to it.

+<div align="center">
+<strong>
+<samp>
+
+[English](README.md) · [简体中文](README.zh-Hans.md)
+
+</samp>
+</strong>
+</div>
+
 ## Action Inputs
- **allowUpdates**: An optional flag which indicates if we should update a release if it already exists. Defaults to `false`.
- **artifactErrorsFailBuild**: An optional flag which indicates if artifact read or upload errors should fail the build.  
- **artifact** (deprecated): An optional set of paths representing artifacts to upload to the release. This may be a single path or a comma delimited list of paths (or globs).
- **artifacts**: An optional set of paths representing artifacts to upload to the release. This may be a single path or a comma delimited list of paths (or globs).
- **artifactContentType**: The content type of the artifact. Defaults to `raw`.
- **body**: An optional body for the release.
- **bodyFile**: An optional body file for the release. This should be the path to the file.
- **commit**: An optional commit reference. This will be used to create the tag if it does not exist.
- **discussionCategory**: When provided this will generate a discussion of the specified category. The category must exist otherwise this will cause the action to fail. This isn't used with draft releases.
- **draft**: Optionally marks this release as a draft release. Set to `true` to enable.
- **generateReleaseNotes**: Indicates if release notes should be automatically generated. Set to `true` to enable.
- **name**: An optional name for the release. If this is omitted the tag will be used.
- **omitBody**: Indicates if the release body should be omitted.
- **omitBodyDuringUpdate**: Indicates if the release body should be omitted during updates. The body will still be applied for newly created releases. This will preserve the existing body during updates.
- **omitName**: Indicates if the release name should be omitted.
- **omitNameDuringUpdate**: Indicates if the release name should be omitted during updates. The name will still be applied for newly created releases. This will preserve the existing name during updates.
- **omitPrereleaseDuringUpdate**: Indicates if the prerelease flag should be omitted during updates. The prerelease flag will still be applied for newly created releases.
-  This will preserve the existing prerelease state during updates.
- **owner**: Optionally specify the owner of the repo where the release should be generated. Defaults to current repo's owner. Example - `ncipollo`.
- **prerelease**: Optionally marks this release as prerelease. Set to true to enable.
- **removeArtifacts**: Indicates if existing release artifacts should be removed. Defaults to `false`.
- **replacesArtifacts**: Indicates if existing release artifacts should be replaced. Defaults to `true`.
- **repo**: Optionally specify the repo where the release should be generated. Defaults to current repo. Example - `release-action`.
- **tag**: An optional tag for the release. If this is omitted the git ref will be used (if it is a tag).
- **token**: The GitHub token. Typically, this will be `${{ secrets.GITHUB_TOKEN }}`. If you are using a personal access token it should have access to the `repo` scope.
+| Input name                 | Description                                                                               	                                                                                                                                                         | Required 	 | Default Value        |
+|----------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|------------|----------------------|
+| allowUpdates               | An optional flag which indicates if we should update a release if it already exists. Defaults to false.                                                                                                                                             | false      | ""                   |
+| artifactErrorsFailBuild    | An optional flag which indicates if artifact read or upload errors should fail the build.                                                                                                                                                           | false      | ""                   |
+| artifacts                  | An optional set of paths representing artifacts to upload to the release. This may be a single path or a comma delimited list of paths (or globs)                                                                                                   | false      | ""                   |
+| artifactContentType        | The content type of the artifact. Defaults to raw                                                                                                                                                                                                   | false      | ""                   |
+| body                       | An optional body for the release.                                                                                                                                                                                                                   | false      | ""                   |
+| bodyFile                   | An optional body file for the release. This should be the path to the file.                                                                                                                                                                         | false      | ""                   |
+| commit                     | An optional commit reference. This will be used to create the tag if it does not exist.                                                                                                                                                             | false      | ""                   |
+| discussionCategory         | When provided this will generate a discussion of the specified category. The category must exist otherwise this will cause the action to fail. This isn't used with draft releases                                                                  | false      | ""                   |
+| draft                      | Optionally marks this release as a draft release. Set to true to enable.                                                                                                                                                                            | false      | ""                   |
+| generateReleaseNotes       | Indicates if release notes should be automatically generated.                                                                                                                                                                                       | false      | false                |
+| name                       | An optional name for the release. If this is omitted the tag will be used.                                                                                                                                                                          | false      | ""                   |
+| omitBody                   | Indicates if the release body should be omitted.                                                                                                                                                                                                    | false      | false                |
+| omitBodyDuringUpdate       | Indicates if the release body should be omitted during updates. The body will still be applied for newly created releases. This will preserve the existing body during updates.                                                                     | false      | false                |
+| omitDraftDuringUpdate      | Indicates if the draft flag should be omitted during updates. The draft flag will still be applied for newly created releases. This will preserve the existing draft state during updates.                                                          | false      | false                |
+| omitName                   | Indicates if the release name should be omitted.                                                                                                                                                                                                    | false      | false                |
+| omitNameDuringUpdate       | Indicates if the release name should be omitted during updates. The name will still be applied for newly created releases. This will preserve the existing name during updates.                                                                     | false      | false                |
+| omitPrereleaseDuringUpdate | Indicates if the prerelease flag should be omitted during updates. The prerelease flag will still be applied for newly created releases. This will preserve the existing prerelease state during updates.                                           | false      | false                |
+| owner                      | Optionally specify the owner of the repo where the release should be generated. Defaults to current repo's owner.                                                                                                                                   | false      | "current repo owner" |
+| prerelease                 | Optionally marks this release as prerelease. Set to true to enable.                                                                                                                                                                                 | false      | ""                   |
+| removeArtifacts            | Indicates if existing release artifacts should be removed.                                                                                                                                                                                          | false      | false                |
+| replacesArtifacts          | Indicates if existing release artifacts should be replaced.                                                                                                                                                                                         | false      | true                 |
+| repo                       | Optionally specify the repo where the release should be generated.                                                                                                                                                                                  | false      | current repo         |
+| skipIfReleaseExists        | When skipIfReleaseExists is enabled the action will be skipped if a non-draft release already exists for the provided tag.                                                                                                                          | false      | current repo         |
+| tag                        | An optional tag for the release. If this is omitted the git ref will be used (if it is a tag).                                                                                                                                                      | false      | ""                   |
+| token                      | The GitHub token. This will default to the GitHub app token. This is primarily useful if you want to use your personal token (for targeting other repos, etc).  If you are using a personal access token it should have access to the `repo` scope. | false      | github.token         |
+| updateOnlyUnreleased       | When allowUpdates is enabled, this will fail the action if the release it is updating is not a draft or a prerelease.                                                                                                                               | false      | false                |

 ## Action Outputs
- **id**: The identifier of the created release.
- **html_url**: The HTML URL of the release.
- **upload_url**: The URL for uploading assets to the release.
+| Output name | Description                                   |
+|-------------|-----------------------------------------------|
+| id          | The identifier of the created release.        |
+| html_url    | The HTML URL of the release.                  |
+| upload_url  | The URL for uploading assets to the release.  |

 ## Example
 This example will create a release when a tag is pushed:
@@ -49,16 +64,17 @@ jobs:

  build:
    runs-on: ubuntu-latest
+    permissions:
+      contents: write
    steps:
    - uses: actions/checkout@v2
    - uses: ncipollo/release-action@v1
      with:
        artifacts: "release.tar.gz,foo/*.txt"
        bodyFile: "body.md"
-        token: ${{ secrets.GITHUB_TOKEN }}
-
 ```

 ## Notes
 - You must provide a tag either via the action input or the git ref (i.e push / create a tag). If you do not provide a tag the action will fail.
 - If the tag of the release you are creating does not yet exist, you should set both the `tag` and `commit` action inputs. `commit` can point to a commit hash or a branch name (ex - `main`).
+- In the example above only required permissions for the action specified (which is `contents: write`). If you add other actions to the same workflow you should expand `permissions` block accordingly.
--- a/README.zh-Hans.md
+++ b/README.zh-Hans.md
@@ -0,0 +1,83 @@
+# Release Action
+
+此操作将创建一个 GitHub Release，并可选择将产出文件上传到其中。
+
+<div align="center">
+<strong>
+<samp>
+
+[English](README.md) · [简体中文](README.zh-Hans.md)
+
+</samp>
+</strong>
+</div>
+
+## Action 输入
+
+| 输入名称                   | 描述                                                                                                                                                                       | 必选  | 默认值               |
+| -------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ----- | -------------------- |
+| allowUpdates               | 一个可选标志，表示如果版本已经存在，我们是否应该更新它。默认值为 false。                                                                                                   | false | ""                   |
+| artifactErrorsFailBuild    | 一个可选标志，表示读取或上传产出文件错误时是否应该使构建失败。                                                                                                             | false | ""                   |
+| artifacts                  | 一组可选的路径，表示要上传到版本的产出文件。 这可能是单个路径或以逗号分隔的路径列表（或 globs）                                                                            | false | ""                   |
+| artifactContentType        | 产出文件的内容类型。 默认为 raw                                                                                                                                            | false | ""                   |
+| body                       | 发布的可选主体。                                                                                                                                                           | false | ""                   |
+| bodyFile                   | 发布的可选正文文件。 这应该是文件的路径。                                                                                                                                  | false | ""                   |
+| commit                     | 一个可选的提交 ref。 如果标签不存在，将用于创建标签。                                                                                                                      | false | ""                   |
+| discussionCategory         | 当提供该选项时，将生成对指定类别的 discussion。类别必须存在，否则将导致 Action 失败。这在草案发布中没有使用                                                                | false | ""                   |
+| draft                      | 可选择将此版本标记为草稿版本。 设置为 true 以启用。                                                                                                                        | false | ""                   |
+| generateReleaseNotes       | 指示是否应自动生成发行说明。                                                                                                                                               | false | false                |
+| name                       | 版本的可选名称。 如果省略，将使用标签。                                                                                                                                    | false | ""                   |
+| omitBody                   | 指示是否应省略发布主体。                                                                                                                                                   | false | false                |
+| omitBodyDuringUpdate       | 指示在更新期间是否应省略发布主体。 正文仍将应用于新创建的版本。 这将在更新期间保留现有正文。                                                                               | false | false                |
+| omitDraftDuringUpdate      | 指示是否应在更新期间省略草稿标志。 草稿标志仍将应用于新创建的版本。 这将在更新期间保留现有的草稿状态。                                                                     | false | false                |
+| omitName                   | 指示是否应省略版本名称。                                                                                                                                                   | false | false                |
+| omitNameDuringUpdate       | 指示在更新期间是否应省略版本名称。 该名称仍将应用于新创建的版本。 这将在更新期间保留现有名称。                                                                             | false | false                |
+| omitPrereleaseDuringUpdate | 指示在更新期间是否应省略预发布标志。 预发布标志仍将应用于新创建的版本。 这将在更新期间保留现有的预发布状态。                                                               | false | false                |
+| owner                      | （可选）指定应在其中生成版本的存储库的所有者。 默认为当前存储库的所有者。                                                                                                  | false | "current repo owner" |
+| prerelease                 | 可选择将此版本标记为预发布。 设置为 true 以启用。                                                                                                                          | false | ""                   |
+| removeArtifacts            | 指示是否应删除现有的发布产出文件。                                                                                                                                         | false | false                |
+| replacesArtifacts          | 指示是否应替换现有的发布产出文件。                                                                                                                                         | false | true                 |
+| repo                       | （可选）指定应在其中生成版本的存储库。                                                                                                                                     | false | current repo         |
+| tag                        | 发布的可选标签。 如果省略，将使用 git ref （如果它是标签）。                                                                                                               | false | ""                   |
+| token                      | GitHub 令牌。 这将默认为 GitHub 应用程序令牌。 如果您想使用您的个人令牌（用于定位其他存储库等），这主要是有用的。 如果您使用的是个人访问令牌，它应该可以访问 `repo` 范围。 | false | github.token         |
+| updateOnlyUnreleased       | 启用 allowUpdates 后，如果它正在更新的版本不是草稿或预发布，则该操作将失败。                                                                                               | false | false                |
+
+## Action 输出
+
+| 输出名称   | 描述                     |
+| ---------- | ------------------------ |
+| id         | 创建的版本的标识符。     |
+| html_url   | 版本的 HTML URL。        |
+| upload_url | 将资产上传到版本的 URL。 |
+
+## 示例
+
+此示例将在推送一个标签时创建一个 Release：
+
+```yml
+name: Releases
+
+on:
+  push:
+    tags:
+      - "*"
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+    steps:
+      - uses: actions/checkout@v2
+      - uses: ncipollo/release-action@v1
+        with:
+          artifacts: "release.tar.gz,foo/*.txt"
+          bodyFile: "body.md"
+          token: ${{ secrets.YOUR_GITHUB_TOKEN }}
+```
+
+## 注意
+
+- 您必须通过 Action 输入或 git ref 提供一个标签（即推送/创建标签）。如果不提供标签，Action 将会失败。
+- 如果您正在创建的版本的标签不存在，您应该同时设置标签和提交 Action 输入。 commit 可以指向提交 Hash 或分支名称（例如 - main）。
+- 在上面的示例中，只需要指定操作的权限（即 contents: write）。 如果您将其他操作添加到同一工作流程，则应相应地扩展权限。
--- a/tests/Action.test.ts
+++ b/tests/Action.test.ts
@@ -5,16 +5,18 @@ import {Releases} from "../src/Releases";
 import {ArtifactUploader} from "../src/ArtifactUploader";
 import {Outputs} from "../src/Outputs";
 import {ArtifactDestroyer} from "../src/ArtifactDestroyer";
+import {ActionSkipper} from "../src/ActionSkipper";

 const applyReleaseDataMock = jest.fn()
+const artifactDestroyMock = jest.fn()
 const createMock = jest.fn()
 const deleteMock = jest.fn()
 const getMock = jest.fn()
 const listArtifactsMock = jest.fn()
 const listMock = jest.fn()
+const shouldSkipMock = jest.fn()
 const updateMock = jest.fn()
 const uploadMock = jest.fn()
-const artifactDestroyMock = jest.fn()

 const artifacts = [
    new Artifact('a/art1'),
@@ -22,20 +24,22 @@ const artifacts = [
 ]

 const createBody = 'createBody'
+const createDraft = true
 const createName = 'createName'
 const commit = 'commit'
 const discussionCategory = 'discussionCategory'
-const draft = true
 const generateReleaseNotes = true
 const id = 100
 const createPrerelease = true
-const updatePrerelease = false
 const releaseId = 101
 const replacesArtifacts = true
 const tag = 'tag'
 const token = 'token'
 const updateBody = 'updateBody'
+const updateDraft = false
 const updateName = 'updateName'
+const updatePrerelease = false
+const updateOnlyUnreleased = false
 const url = 'http://api.example.com'

 describe("Action", () => {
@@ -43,6 +47,7 @@ describe("Action", () => {
        createMock.mockClear()
        getMock.mockClear()
        listMock.mockClear()
+        shouldSkipMock.mockClear()
        updateMock.mockClear()
        uploadMock.mockClear()
    })
@@ -56,7 +61,7 @@ describe("Action", () => {
            createBody,
            commit,
            discussionCategory,
-            draft,
+            createDraft,
            generateReleaseNotes,
            createName,
            createPrerelease)
@@ -76,7 +81,7 @@ describe("Action", () => {
            createBody,
            commit,
            discussionCategory,
-            draft,
+            createDraft,
            generateReleaseNotes,
            createName,
            createPrerelease)
@@ -101,7 +106,7 @@ describe("Action", () => {
            createBody,
            commit,
            discussionCategory,
-            draft,
+            createDraft,
            generateReleaseNotes,
            createName,
            createPrerelease
@@ -121,7 +126,7 @@ describe("Action", () => {
            createBody,
            commit,
            discussionCategory,
-            draft,
+            createDraft,
            generateReleaseNotes,
            createName,
            createPrerelease
@@ -148,6 +153,16 @@ describe("Action", () => {
        assertOutputApplied()
    })

+    it('skips action', async () => {
+        const action = createAction(false, false, false)
+        shouldSkipMock.mockResolvedValue(true)
+
+        await action.perform()
+
+        expect(createMock).not.toBeCalled()
+        expect(updateMock).not.toBeCalled()
+    })
+
    it('throws error when create fails', async () => {
        const action = createAction(false, true)
        createMock.mockRejectedValue("error")
@@ -164,7 +179,7 @@ describe("Action", () => {
            createBody,
            commit,
            discussionCategory,
-            draft,
+            createDraft,
            generateReleaseNotes,
            createName,
            createPrerelease
@@ -215,7 +230,7 @@ describe("Action", () => {
            updateBody,
            commit,
            discussionCategory,
-            draft,
+            updateDraft,
            updateName,
            updatePrerelease
        )
@@ -239,7 +254,7 @@ describe("Action", () => {
            createBody,
            commit,
            discussionCategory,
-            draft,
+            createDraft,
            generateReleaseNotes,
            createName,
            createPrerelease
@@ -266,7 +281,7 @@ describe("Action", () => {
            updateBody,
            commit,
            discussionCategory,
-            draft,
+            updateDraft,
            updateName,
            updatePrerelease
        )
@@ -285,7 +300,7 @@ describe("Action", () => {
            updateBody,
            commit,
            discussionCategory,
-            draft,
+            updateDraft,
            updateName,
            updatePrerelease
        )
@@ -304,7 +319,7 @@ describe("Action", () => {
            updateBody,
            commit,
            discussionCategory,
-            draft,
+            updateDraft,
            updateName,
            updatePrerelease
        )
@@ -316,7 +331,9 @@ describe("Action", () => {
        expect(applyReleaseDataMock).toBeCalledWith({id: releaseId, upload_url: url})
    }

-    function createAction(allowUpdates: boolean, hasArtifact: boolean, removeArtifacts: boolean = false): Action {
+    function createAction(allowUpdates: boolean,
+                          hasArtifact: boolean,
+                          removeArtifacts: boolean = false): Action {
        let inputArtifact: Artifact[]
        if (hasArtifact) {
            inputArtifact = artifacts
@@ -349,6 +366,7 @@ describe("Action", () => {
        listMock.mockResolvedValue({
            data: []
        })
+        shouldSkipMock.mockResolvedValue(false)
        updateMock.mockResolvedValue({
            data: {
                id: releaseId,
@@ -362,22 +380,25 @@ describe("Action", () => {
                allowUpdates: allowUpdates,
                artifactErrorsFailBuild: true,
                artifacts: inputArtifact,
+                createdDraft: createDraft,
                createdReleaseBody: createBody,
                createdReleaseName: createName,
                commit: commit,
                discussionCategory: discussionCategory,
-                draft: draft,
                generateReleaseNotes: true,
                owner: "owner",
                createdPrerelease: createPrerelease,
                replacesArtifacts: replacesArtifacts,
                removeArtifacts: removeArtifacts,
                repo: "repo",
+                skipIfReleaseExists: false,
                tag: tag,
                token: token,
+                updatedDraft: updateDraft,
                updatedReleaseBody: updateBody,
                updatedReleaseName: updateName,
-                updatedPrerelease: updatePrerelease
+                updatedPrerelease: updatePrerelease,
+                updateOnlyUnreleased: updateOnlyUnreleased
            }
        })
        const MockOutputs = jest.fn<Outputs, any>(() => {
@@ -395,13 +416,20 @@ describe("Action", () => {
                destroyArtifacts: artifactDestroyMock
            }
        })
+        
+        const MockActionSkipper = jest.fn<ActionSkipper, any>(() => {
+            return {
+                shouldSkip: shouldSkipMock
+            }
+        })

        const inputs = new MockInputs()
        const outputs = new MockOutputs()
        const releases = new MockReleases()
        const uploader = new MockUploader()
        const artifactDestroyer = new MockArtifactDestroyer()
+        const actionSkipper = new MockActionSkipper()

-        return new Action(inputs, outputs, releases, uploader, artifactDestroyer)
+        return new Action(inputs, outputs, releases, uploader, artifactDestroyer, actionSkipper)
    }
 })
--- a/tests/ActionSkipper.test.ts
+++ b/tests/ActionSkipper.test.ts
@@ -0,0 +1,44 @@
+import {ActionSkipper, ReleaseActionSkipper} from "../src/ActionSkipper";
+import {Releases} from "../src/Releases";
+
+describe("shouldSkip", () => {
+    const getMock = jest.fn()
+    const tag = "tag"
+    const MockReleases = jest.fn<Releases, any>(() => {
+        return {
+            create: jest.fn(),
+            deleteArtifact: jest.fn(),
+            getByTag: getMock,
+            listArtifactsForRelease: jest.fn(),
+            listReleases: jest.fn(),
+            update: jest.fn(),
+            uploadArtifact: jest.fn()
+        }
+    })
+
+    it('should return false when skipIfReleaseExists is false', async () => {
+        const actionSkipper = new ReleaseActionSkipper(false, MockReleases(), tag)
+        expect(await actionSkipper.shouldSkip()).toBe(false)
+    })
+
+    it('should return false when error occurs', async () => {
+        getMock.mockRejectedValue(new Error())
+
+        const actionSkipper = new ReleaseActionSkipper(true, MockReleases(), tag)
+        expect(await actionSkipper.shouldSkip()).toBe(false)
+    })
+
+    it('should return false when release does not exist', async () => {
+        getMock.mockResolvedValue({})
+        
+        const actionSkipper = new ReleaseActionSkipper(true, MockReleases(), tag)
+        expect(await actionSkipper.shouldSkip()).toBe(false)
+    })
+
+    it('should return true when release does exist', async () => {
+        getMock.mockResolvedValue({data: {}})
+
+        const actionSkipper = new ReleaseActionSkipper(true, MockReleases(), tag)
+        expect(await actionSkipper.shouldSkip()).toBe(true)
+    })
+})
--- a/tests/ArtifactUploader.test.ts
+++ b/tests/ArtifactUploader.test.ts
@@ -18,6 +18,7 @@ const uploadMock = jest.fn()

 jest.mock('fs', () => {
    return {
+        promises: {},
        readFileSync: () => fileContents,
        statSync: () => {
            return {size: contentLength}
--- a/tests/Inputs.test.ts
+++ b/tests/Inputs.test.ts
@@ -1,4 +1,5 @@
 const mockGetInput = jest.fn();
+const mockGetBooleanInput = jest.fn();
 const mockGlob = jest.fn()
 const mockReadFileSync = jest.fn();
 const mockStatSync = jest.fn();
@@ -14,7 +15,10 @@ const artifacts = [
 ]

 jest.mock('@actions/core', () => {
-    return {getInput: mockGetInput};
+    return {
+        getInput: mockGetInput,
+        getBooleanInput: mockGetBooleanInput
+    };
 })

 jest.mock('fs', () => {
@@ -87,7 +91,7 @@ describe('Inputs', () => {
            expect(mockGlob).toBeCalledTimes(1)
            expect(mockGlob).toBeCalledWith('art1', 'contentType', true)
        })
-        
+
        it('returns empty artifacts', () => {
            mockGetInput.mockReturnValueOnce('')
                .mockReturnValueOnce('')
@@ -108,7 +112,7 @@ describe('Inputs', () => {

        it('returns input.artifacts with default contentType', () => {
            mockGetInput.mockReturnValueOnce('art1')
-                .mockReturnValueOnce('raw')
+                .mockReturnValueOnce('')
                .mockReturnValueOnce('false')

            expect(inputs.artifacts).toEqual(artifacts)
@@ -128,6 +132,17 @@ describe('Inputs', () => {
        })
    })

+    describe('createdDraft', () => {
+        it('returns false', () => {
+            expect(inputs.createdDraft).toBe(false)
+        })
+
+        it('returns true', () => {
+            mockGetInput.mockReturnValue('true')
+            expect(inputs.createdDraft).toBe(true)
+        })
+    })
+
    describe('createdReleaseBody', () => {
        it('returns input body', () => {
            mockGetInput
@@ -174,7 +189,7 @@ describe('Inputs', () => {
            mockGetInput
                .mockReturnValueOnce('true')
                .mockReturnValueOnce('name')
-            expect(inputs.createdReleaseBody).toBeUndefined()
+            expect(inputs.createdReleaseName).toBeUndefined()
        })

        it('returns tag', () => {
@@ -191,24 +206,13 @@ describe('Inputs', () => {
            mockGetInput.mockReturnValue('Release')
            expect(inputs.discussionCategory).toBe('Release')
        })
-        
+
        it('returns undefined', () => {
            mockGetInput.mockReturnValue('')
            expect(inputs.discussionCategory).toBe(undefined)
        })
    })

-    describe('draft', () => {
-        it('returns false', () => {
-            expect(inputs.draft).toBe(false)
-        })
-
-        it('returns true', () => {
-            mockGetInput.mockReturnValue('true')
-            expect(inputs.draft).toBe(true)
-        })
-    })
-
    describe('generateReleaseNotes', () => {
        it('returns returns true', function () {
            mockGetInput.mockReturnValue("true")
@@ -220,7 +224,7 @@ describe('Inputs', () => {
            expect(inputs.generateReleaseNotes).toBe(false)
        });
    })
-    
+
    describe('owner', () => {
        it('returns owner from context', function () {
            process.env.GITHUB_REPOSITORY = "owner/repo"
@@ -278,6 +282,18 @@ describe('Inputs', () => {
        });
    })

+    describe('skipIfReleaseExists', () => {
+        it('returns false', () => {
+            mockGetBooleanInput.mockReturnValue(false)
+            expect(inputs.skipIfReleaseExists).toBe(false)
+        })
+
+        it('returns true', () => {
+            mockGetBooleanInput.mockReturnValue(true)
+            expect(inputs.skipIfReleaseExists).toBe(true)
+        })
+    })
+
    describe('tag', () => {
        it('returns input tag', () => {
            mockGetInput.mockReturnValue('tag')
@@ -294,10 +310,38 @@ describe('Inputs', () => {
            expect(inputs.tag).toBe('sha-tag')
        })
        it('throws if no tag', () => {
+            context.ref = ""
            expect(() => inputs.tag).toThrow()
        })
    })

+    describe('updatedDraft', () => {
+        it('returns false', () => {
+            expect(inputs.updatedDraft).toBe(false)
+        })
+
+        it('returns true', () => {
+            mockGetInput
+                .mockReturnValueOnce('false')
+                .mockReturnValue('true')
+            expect(inputs.updatedDraft).toBe(true)
+        })
+
+        it('returns true when omitted is blank', () => {
+            mockGetInput
+                .mockReturnValueOnce('')
+                .mockReturnValue('true')
+            expect(inputs.updatedDraft).toBe(true)
+        })
+
+        it('returns undefined when omitted for update', () => {
+            mockGetInput
+                .mockReturnValueOnce('true')
+                .mockReturnValueOnce('true')
+            expect(inputs.updatedDraft).toBeUndefined()
+        })
+    })
+
    describe('updatedReleaseBody', () => {
        it('returns input body', () => {
            mockGetInput
@@ -402,6 +446,17 @@ describe('Inputs', () => {
        })
    })

+    describe('updateOnlyUnreleased', () => {
+        it('returns false', () => {
+            expect(inputs.updateOnlyUnreleased).toBe(false)
+        })
+
+        it('returns true', () => {
+            mockGetInput.mockReturnValueOnce('true')
+            expect(inputs.updateOnlyUnreleased).toBe(true)
+        })
+    })
+
    function createGlobber(): ArtifactGlobber {
        const MockGlobber = jest.fn<ArtifactGlobber, any>(() => {
            return {
--- a/tests/Integration.test.ts
+++ b/tests/Integration.test.ts
@@ -7,6 +7,7 @@ import * as path from "path";
 import {FileArtifactGlobber} from "../src/ArtifactGlobber";
 import {Outputs} from "../src/Outputs";
 import {GithubArtifactDestroyer} from "../src/ArtifactDestroyer";
+import {ReleaseActionSkipper} from "../src/ActionSkipper";

 // This test is currently intended to be manually run during development. To run:
 // - Make sure you have an environment variable named GITHUB_TOKEN assigned to your token
@@ -27,8 +28,9 @@ describe.skip('Integration Test', () => {
            inputs.artifactErrorsFailBuild,
        )
        const artifactDestroyer = new GithubArtifactDestroyer(releases)
+        const actionSkipper = new ReleaseActionSkipper(inputs.skipIfReleaseExists, releases, inputs.tag)
        
-        action = new Action(inputs, outputs, releases, uploader, artifactDestroyer)
+        action = new Action(inputs, outputs, releases, uploader, artifactDestroyer, actionSkipper)
    })

    it('Performs action', async () => {
@@ -41,22 +43,25 @@ describe.skip('Integration Test', () => {
                allowUpdates: true,
                artifactErrorsFailBuild: false,
                artifacts: artifacts(),
+                createdDraft: false,
                createdReleaseBody: "This release was generated by release-action's integration test",
                createdReleaseName: "Releases Action Integration Test",
                commit: undefined,
                discussionCategory: 'Release',
-                draft: false,
                generateReleaseNotes: true,
                owner: "ncipollo",
                createdPrerelease: false,
                replacesArtifacts: true,
                removeArtifacts: false,
                repo: "actions-playground",
+                skipIfReleaseExists: false,
                tag: "release-action-test",
                token: getToken(),
-                updatedReleaseBody: "This release was generated by release-action's integration test",
+                updatedDraft: false,
+                updatedReleaseBody: "This release was updated by release-action's integration test",
                updatedReleaseName: "Releases Action Integration Test",
-                updatedPrerelease: false
+                updatedPrerelease: false,
+                updateOnlyUnreleased: false
            }
        })
        return new MockInputs();
--- a/tests/ReleaseValidator.test.ts
+++ b/tests/ReleaseValidator.test.ts
@@ -0,0 +1,74 @@
+import {ReleaseValidator} from "../src/ReleaseValidator";
+
+describe("validateReleaseUpdate", () => {
+    describe("updateOnlyUnreleased is disabled", () => {
+        const validator = new ReleaseValidator(false)
+        it('should not throw', () => {
+            const releaseResponse = {
+                draft: false,
+                prerelease: false,
+                name: "Name"
+            }
+            expect(() => {
+                validator.validateReleaseUpdate(releaseResponse)
+            }).not.toThrow()
+        })
+    })
+    describe("updateOnlyUnreleased is enabled", () => {
+        const validator = new ReleaseValidator(true)
+        it('should throw if neither draft or prerelease are enabled', () => {
+            const releaseResponse = {
+                draft: false,
+                prerelease: false,
+                name: "Name"
+            }
+            expect(() => {
+                validator.validateReleaseUpdate(releaseResponse)
+            }).toThrow()
+        })
+        
+        it('should not throw if draft is enabled', () => {
+            const releaseResponse = {
+                draft: true,
+                prerelease: false,
+                name: "Name"
+            }
+            expect(() => {
+                validator.validateReleaseUpdate(releaseResponse)
+            }).not.toThrow()
+        })
+
+        it('should not throw if prerelease is enabled', () => {
+            const releaseResponse = {
+                draft: false,
+                prerelease: true,
+                name: "Name"
+            }
+            expect(() => {
+                validator.validateReleaseUpdate(releaseResponse)
+            }).not.toThrow()
+        })
+
+        it('should not throw if draft & prerelease is enabled', () => {
+            const releaseResponse = {
+                draft: true,
+                prerelease: true,
+                name: "Name"
+            }
+            expect(() => {
+                validator.validateReleaseUpdate(releaseResponse)
+            }).not.toThrow()
+        })
+
+        it('should default error message release name to release', () => {
+            const releaseResponse = {
+                draft: false,
+                prerelease: false,
+                name: null
+            }
+            expect(() => {
+                validator.validateReleaseUpdate(releaseResponse)
+            }).toThrow(`Tried to update "release" which is neither a draft or prerelease. (updateOnlyUnreleased is on)`)
+        })
+    })
+})
--- a/action.yml
+++ b/action.yml
@@ -59,6 +59,10 @@ inputs:
    description: 'Indicates if the release body should be omitted during updates. The body will still be applied for newly created releases. This will preserve the existing body during updates.'
    required: false
    default: 'false'
+  omitDraftDuringUpdate:
+    description: 'Indicates if the draft flag should be omitted during updates. The draft flag will still be applied for newly created releases. This will preserve the existing draft state during updates.'
+    required: false
+    default: 'false'
  omitName:
    description: 'Indicates if the release name should be omitted.'
    required: false
@@ -90,7 +94,11 @@ inputs:
  repo:
    description: "Optionally specify the repo where the release should be generated. Defaults to current repo"
    required: false
-    default: ''  
+    default: ''
+  skipIfReleaseExists:
+    description: "When skipIfReleaseExists is enabled the action will be skipped if a non-draft release already exists for the provided tag."
+    required: false
+    default: 'false'
  tag:
    description: 'An optional tag for the release. If this is omitted the git ref will be used (if it is a tag).'
    required: false
@@ -99,6 +107,10 @@ inputs:
    description: 'The Github token.'
    required: false
    default: ${{ github.token }}
+  updateOnlyUnreleased:
+    description: "When allowUpdates is enabled, this will fail the action if the release it is updating is not a draft or a prerelease."
+    required: false
+    default: 'false'
 outputs:
  id:
    description: 'The identifier of the created release.'
@@ -107,7 +119,7 @@ outputs:
  upload_url:
    description: 'The URL for uploading assets to the release.'
 runs:
-  using: 'node12'
+  using: 'node16'
  main: 'dist/index.js'
 branding:
  icon: 'tag'
--- a/dist/index.js
+++ b/dist/index.js
--- a/dist/index.js.map
+++ b/dist/index.js.map
--- a/dist/licenses.txt
+++ b/dist/licenses.txt
@@ -484,28 +484,6 @@ OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 SOFTWARE.


-concat-map
-MIT
-This software is released under the MIT license:
-
-Permission is hereby granted, free of charge, to any person obtaining a copy of
-this software and associated documentation files (the "Software"), to deal in
-the Software without restriction, including without limitation the rights to
-use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
-the Software, and to permit persons to whom the Software is furnished to do so,
-subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in all
-copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
-FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
-COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
-IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
-CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-
-
 deprecation
 ISC
 The ISC License
@@ -576,7 +554,7 @@ glob
 ISC
 The ISC License

-Copyright (c) Isaac Z. Schlueter and Contributors
+Copyright (c) 2009-2022 Isaac Z. Schlueter and Contributors

 Permission to use, copy, modify, and/or distribute this software for any
 purpose with or without fee is hereby granted, provided that the above
@@ -590,12 +568,6 @@ WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
 IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

-## Glob Logo
-
-Glob's logo created by Tanya Brassie <http://tanyabrassie.com/>, licensed
-under a Creative Commons Attribution-ShareAlike 4.0 International License
-https://creativecommons.org/licenses/by-sa/4.0/
-

 inflight
 ISC
@@ -665,7 +637,7 @@ minimatch
 ISC
 The ISC License

-Copyright (c) Isaac Z. Schlueter and Contributors
+Copyright (c) 2011-2022 Isaac Z. Schlueter and Contributors

 Permission to use, copy, modify, and/or distribute this software for any
 purpose with or without fee is hereby granted, provided that the above
@@ -725,30 +697,8 @@ ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
 IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.


-path-is-absolute
+tr46
 MIT
-The MIT License (MIT)
-
-Copyright (c) Sindre Sorhus <sindresorhus@gmail.com> (sindresorhus.com)
-
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in
-all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-THE SOFTWARE.
-

 tunnel
 MIT
@@ -799,6 +749,60 @@ The above copyright notice and this permission notice shall be included in all c
 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.


+uuid
+MIT
+The MIT License (MIT)
+
+Copyright (c) 2010-2020 Robert Kieffer and other contributors
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+
+webidl-conversions
+BSD-2-Clause
+# The BSD 2-Clause License
+
+Copyright (c) 2014, Domenic Denicola
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
+
+1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
+
+2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+whatwg-url
+MIT
+The MIT License (MIT)
+
+Copyright (c) 2015–2016 Sebastian Mayr
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+
+
 wrappy
 ISC
 The ISC License
--- a/jest.config.js
+++ b/jest.config.js
@@ -1,11 +0,0 @@
-module.exports = {
-  clearMocks: true,
-  moduleFileExtensions: ['js', 'ts'],
-  testEnvironment: 'node',
-  testMatch: ['**/*.test.ts'],
-  testRunner: 'jest-circus/runner',
-  transform: {
-    '^.+\\.ts$': 'ts-jest'
-  },
-  verbose: true
-}
--- a/lib/Action.js
+++ b/lib/Action.js
@@ -1,4 +1,23 @@
 "use strict";
+var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
+    if (k2 === undefined) k2 = k;
+    Object.defineProperty(o, k2, { enumerable: true, get: function() { return m[k]; } });
+}) : (function(o, m, k, k2) {
+    if (k2 === undefined) k2 = k;
+    o[k2] = m[k];
+}));
+var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
+    Object.defineProperty(o, "default", { enumerable: true, value: v });
+}) : function(o, v) {
+    o["default"] = v;
+});
+var __importStar = (this && this.__importStar) || function (mod) {
+    if (mod && mod.__esModule) return mod;
+    var result = {};
+    if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
+    __setModuleDefault(result, mod);
+    return result;
+};
 var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
    function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
    return new (P || (P = Promise))(function (resolve, reject) {
@@ -10,17 +29,25 @@ var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, ge
 };
 Object.defineProperty(exports, "__esModule", { value: true });
 exports.Action = void 0;
+const core = __importStar(require("@actions/core"));
 const GithubError_1 = require("./GithubError");
+const ReleaseValidator_1 = require("./ReleaseValidator");
 class Action {
-    constructor(inputs, outputs, releases, uploader, artifactDestroyer) {
+    constructor(inputs, outputs, releases, uploader, artifactDestroyer, skipper) {
        this.inputs = inputs;
        this.outputs = outputs;
        this.releases = releases;
        this.uploader = uploader;
        this.artifactDestroyer = artifactDestroyer;
+        this.skipper = skipper;
+        this.releaseValidator = new ReleaseValidator_1.ReleaseValidator(inputs.updateOnlyUnreleased);
    }
    perform() {
        return __awaiter(this, void 0, void 0, function* () {
+            if (yield this.skipper.shouldSkip()) {
+                core.notice("Skipping action, release already exists and skipIfReleaseExists is enabled.");
+                return;
+            }
            const releaseResponse = yield this.createOrUpdateRelease();
            const releaseData = releaseResponse.data;
            const releaseId = releaseData.id;
@@ -45,6 +72,8 @@ class Action {
                catch (error) {
                    return yield this.checkForMissingReleaseError(error);
                }
+                // Fail if this isn't an unreleased release & updateOnlyUnreleased is enabled.
+                this.releaseValidator.validateReleaseUpdate(getResponse.data);
                return yield this.updateRelease(getResponse.data.id);
            }
            else {
@@ -64,7 +93,7 @@ class Action {
    }
    updateRelease(id) {
        return __awaiter(this, void 0, void 0, function* () {
-            return yield this.releases.update(id, this.inputs.tag, this.inputs.updatedReleaseBody, this.inputs.commit, this.inputs.discussionCategory, this.inputs.draft, this.inputs.updatedReleaseName, this.inputs.updatedPrerelease);
+            return yield this.releases.update(id, this.inputs.tag, this.inputs.updatedReleaseBody, this.inputs.commit, this.inputs.discussionCategory, this.inputs.updatedDraft, this.inputs.updatedReleaseName, this.inputs.updatedPrerelease);
        });
    }
    static noPublishedRelease(error) {
@@ -93,7 +122,7 @@ class Action {
    }
    createRelease() {
        return __awaiter(this, void 0, void 0, function* () {
-            return yield this.releases.create(this.inputs.tag, this.inputs.createdReleaseBody, this.inputs.commit, this.inputs.discussionCategory, this.inputs.draft, this.inputs.generateReleaseNotes, this.inputs.createdReleaseName, this.inputs.createdPrerelease);
+            return yield this.releases.create(this.inputs.tag, this.inputs.createdReleaseBody, this.inputs.commit, this.inputs.discussionCategory, this.inputs.createdDraft, this.inputs.generateReleaseNotes, this.inputs.createdReleaseName, this.inputs.createdPrerelease);
        });
    }
 }
--- a/lib/ActionSkipper.js
+++ b/lib/ActionSkipper.js
@@ -0,0 +1,36 @@
+"use strict";
+var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
+    function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
+    return new (P || (P = Promise))(function (resolve, reject) {
+        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
+        function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
+        function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
+        step((generator = generator.apply(thisArg, _arguments || [])).next());
+    });
+};
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.ReleaseActionSkipper = void 0;
+class ReleaseActionSkipper {
+    constructor(skipIfReleaseExists, releases, tag) {
+        this.skipIfReleaseExists = skipIfReleaseExists;
+        this.releases = releases;
+        this.tag = tag;
+    }
+    shouldSkip() {
+        return __awaiter(this, void 0, void 0, function* () {
+            if (!this.skipIfReleaseExists) {
+                // Bail if skip flag isn't set.
+                return false;
+            }
+            try {
+                const getResponse = yield this.releases.getByTag(this.tag);
+                return getResponse.data != null;
+            }
+            catch (error) {
+                // There is either no release or something else went wrong. Either way, run the action.
+                return false;
+            }
+        });
+    }
+}
+exports.ReleaseActionSkipper = ReleaseActionSkipper;
--- a/lib/Artifact.js
+++ b/lib/Artifact.js
@@ -6,14 +6,14 @@ const fs_1 = require("fs");
 class Artifact {
    constructor(path, contentType = "raw") {
        this.path = path;
-        this.name = (0, path_1.basename)(path);
+        this.name = path_1.basename(path);
        this.contentType = contentType;
    }
    get contentLength() {
-        return (0, fs_1.statSync)(this.path).size;
+        return fs_1.statSync(this.path).size;
    }
    readFile() {
-        return (0, fs_1.readFileSync)(this.path);
+        return fs_1.readFileSync(this.path);
    }
 }
 exports.Artifact = Artifact;
--- a/lib/ArtifactGlobber.js
+++ b/lib/ArtifactGlobber.js
@@ -28,6 +28,7 @@ const Globber_1 = require("./Globber");
 const Artifact_1 = require("./Artifact");
 const untildify_1 = __importDefault(require("untildify"));
 const ArtifactPathValidator_1 = require("./ArtifactPathValidator");
+const PathNormalizer_1 = require("./PathNormalizer");
 class FileArtifactGlobber {
    constructor(globber = new Globber_1.FileGlobber()) {
        this.globber = globber;
@@ -36,6 +37,7 @@ class FileArtifactGlobber {
        const split = /[,\n]/;
        return artifact.split(split)
            .map(path => path.trimStart())
+            .map(path => PathNormalizer_1.PathNormalizer.normalizePath(path))
            .map(path => FileArtifactGlobber.expandPath(path))
            .map(pattern => this.globPattern(pattern, errorsFailBuild))
            .map((globResult) => FileArtifactGlobber.validatePattern(errorsFailBuild, globResult[1], globResult[0]))
@@ -65,7 +67,7 @@ class FileArtifactGlobber {
        throw Error(`Artifact pattern :${pattern} did not match any files`);
    }
    static expandPath(path) {
-        return (0, untildify_1.default)(path);
+        return untildify_1.default(path);
    }
 }
 exports.FileArtifactGlobber = FileArtifactGlobber;
--- a/lib/ArtifactPathValidator.js
+++ b/lib/ArtifactPathValidator.js
@@ -39,7 +39,7 @@ class ArtifactPathValidator {
        }
    }
    verifyNotDirectory(path) {
-        const isDir = (0, fs_1.statSync)(path).isDirectory();
+        const isDir = fs_1.statSync(path).isDirectory();
        if (isDir) {
            const message = `Artifact is a directory:${path}. Directories can not be uploaded to a release.`;
            this.reportError(message);
--- a/lib/Inputs.js
+++ b/lib/Inputs.js
@@ -50,14 +50,6 @@ class CoreInputs {
        const allow = core.getInput('artifactErrorsFailBuild');
        return allow == 'true';
    }
-    get createdReleaseBody() {
-        if (CoreInputs.omitBody)
-            return undefined;
-        return this.body;
-    }
-    static get omitBody() {
-        return core.getInput('omitBody') == 'true';
-    }
    get body() {
        const body = core.getInput('body');
        if (body) {
@@ -69,6 +61,30 @@ class CoreInputs {
        }
        return '';
    }
+    get createdDraft() {
+        const draft = core.getInput('draft');
+        return draft == 'true';
+    }
+    get createdPrerelease() {
+        const preRelease = core.getInput('prerelease');
+        return preRelease == 'true';
+    }
+    get createdReleaseBody() {
+        if (CoreInputs.omitBody)
+            return undefined;
+        return this.body;
+    }
+    static get omitBody() {
+        return core.getInput('omitBody') == 'true';
+    }
+    get createdReleaseName() {
+        if (CoreInputs.omitName)
+            return undefined;
+        return this.name;
+    }
+    static get omitName() {
+        return core.getInput('omitName') == 'true';
+    }
    get commit() {
        const commit = core.getInput('commit');
        if (commit) {
@@ -76,11 +92,6 @@ class CoreInputs {
        }
        return undefined;
    }
-    get createdReleaseName() {
-        if (CoreInputs.omitName)
-            return undefined;
-        return this.name;
-    }
    get discussionCategory() {
        const category = core.getInput('discussionCategory');
        if (category) {
@@ -88,9 +99,6 @@ class CoreInputs {
        }
        return undefined;
    }
-    static get omitName() {
-        return core.getInput('omitName') == 'true';
-    }
    get name() {
        const name = core.getInput('name');
        if (name) {
@@ -98,10 +106,6 @@ class CoreInputs {
        }
        return this.tag;
    }
-    get draft() {
-        const draft = core.getInput('draft');
-        return draft == 'true';
-    }
    get generateReleaseNotes() {
        const generate = core.getInput('generateReleaseNotes');
        return generate == 'true';
@@ -113,18 +117,6 @@ class CoreInputs {
        }
        return this.context.repo.owner;
    }
-    get createdPrerelease() {
-        const preRelease = core.getInput('prerelease');
-        return preRelease == 'true';
-    }
-    static get omitPrereleaseDuringUpdate() {
-        return core.getInput('omitPrereleaseDuringUpdate') == 'true';
-    }
-    get updatedPrerelease() {
-        if (CoreInputs.omitPrereleaseDuringUpdate)
-            return undefined;
-        return this.createdPrerelease;
-    }
    get removeArtifacts() {
        const removes = core.getInput('removeArtifacts');
        return removes == 'true';
@@ -140,6 +132,9 @@ class CoreInputs {
        }
        return this.context.repo.repo;
    }
+    get skipIfReleaseExists() {
+        return core.getBooleanInput("skipIfReleaseExists");
+    }
    get tag() {
        const tag = core.getInput('tag');
        if (tag) {
@@ -155,6 +150,22 @@ class CoreInputs {
    get token() {
        return core.getInput('token', { required: true });
    }
+    get updatedDraft() {
+        if (CoreInputs.omitDraftDuringUpdate)
+            return undefined;
+        return this.createdDraft;
+    }
+    static get omitDraftDuringUpdate() {
+        return core.getInput('omitDraftDuringUpdate') == 'true';
+    }
+    get updatedPrerelease() {
+        if (CoreInputs.omitPrereleaseDuringUpdate)
+            return undefined;
+        return this.createdPrerelease;
+    }
+    static get omitPrereleaseDuringUpdate() {
+        return core.getInput('omitPrereleaseDuringUpdate') == 'true';
+    }
    get updatedReleaseBody() {
        if (CoreInputs.omitBody || CoreInputs.omitBodyDuringUpdate)
            return undefined;
@@ -168,11 +179,14 @@ class CoreInputs {
            return undefined;
        return this.name;
    }
+    get updateOnlyUnreleased() {
+        return core.getInput('updateOnlyUnreleased') == 'true';
+    }
    static get omitNameDuringUpdate() {
        return core.getInput('omitNameDuringUpdate') == 'true';
    }
    stringFromFile(path) {
-        return (0, fs_1.readFileSync)(path, 'utf-8');
+        return fs_1.readFileSync(path, 'utf-8');
    }
 }
 exports.CoreInputs = CoreInputs;
--- a/lib/Main.js
+++ b/lib/Main.js
@@ -38,6 +38,7 @@ const ArtifactGlobber_1 = require("./ArtifactGlobber");
 const GithubError_1 = require("./GithubError");
 const Outputs_1 = require("./Outputs");
 const ArtifactDestroyer_1 = require("./ArtifactDestroyer");
+const ActionSkipper_1 = require("./ActionSkipper");
 function run() {
    return __awaiter(this, void 0, void 0, function* () {
        try {
@@ -58,8 +59,9 @@ function createAction() {
    const inputs = new Inputs_1.CoreInputs(globber, context);
    const outputs = new Outputs_1.CoreOutputs();
    const releases = new Releases_1.GithubReleases(inputs, git);
+    const skipper = new ActionSkipper_1.ReleaseActionSkipper(inputs.skipIfReleaseExists, releases, inputs.tag);
    const uploader = new ArtifactUploader_1.GithubArtifactUploader(releases, inputs.replacesArtifacts, inputs.artifactErrorsFailBuild);
    const artifactDestroyer = new ArtifactDestroyer_1.GithubArtifactDestroyer(releases);
-    return new Action_1.Action(inputs, outputs, releases, uploader, artifactDestroyer);
+    return new Action_1.Action(inputs, outputs, releases, uploader, artifactDestroyer, skipper);
 }
 run();
--- a/lib/PathNormalizer.js
+++ b/lib/PathNormalizer.js
@@ -0,0 +1,13 @@
+"use strict";
+var __importDefault = (this && this.__importDefault) || function (mod) {
+    return (mod && mod.__esModule) ? mod : { "default": mod };
+};
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.PathNormalizer = void 0;
+const path_1 = __importDefault(require("path"));
+class PathNormalizer {
+    static normalizePath(pathString) {
+        return pathString.split(path_1.default.sep).join("/");
+    }
+}
+exports.PathNormalizer = PathNormalizer;
--- a/lib/ReleaseValidator.js
+++ b/lib/ReleaseValidator.js
@@ -0,0 +1,18 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.ReleaseValidator = void 0;
+class ReleaseValidator {
+    constructor(updateOnlyUnreleased) {
+        this.updateOnlyUnreleased = updateOnlyUnreleased;
+    }
+    validateReleaseUpdate(releaseResponse) {
+        var _a;
+        if (!this.updateOnlyUnreleased) {
+            return;
+        }
+        if (!releaseResponse.draft && !releaseResponse.prerelease) {
+            throw new Error(`Tried to update "${(_a = releaseResponse.name) !== null && _a !== void 0 ? _a : "release"}" which is neither a draft or prerelease. (updateOnlyUnreleased is on)`);
+        }
+    }
+}
+exports.ReleaseValidator = ReleaseValidator;
--- a/package.json
+++ b/package.json
@@ -7,6 +7,7 @@
  "scripts": {
    "build": "tsc",
    "clean": "rm -rf lib/*",
+    "coverage": "jest --coverage",
    "debug": "yarn clean && yarn install && yarn build && yarn package",
    "package": "ncc build --source-map --license licenses.txt",
    "release": "yarn clean && yarn install --production && yarn build && yarn package",
@@ -23,19 +24,48 @@
  ],
  "author": "GitHub",
  "license": "MIT",
+  "jest": {
+    "clearMocks": true,
+    "collectCoverage": true,
+    "coveragePathIgnorePatterns": [
+      "src/Globber.ts",
+      "src/Releases.ts"
+    ],
+    "coverageThreshold": {
+      "global": {
+        "branches": 95,
+        "functions": 100,
+        "lines": 100,
+        "statements": 100
+      }
+    },
+    "moduleFileExtensions": [
+      "js",
+      "ts"
+    ],
+    "testEnvironment": "node",
+    "testMatch": [
+      "**/*.test.ts"
+    ],
+    "testRunner": "jest-circus/runner",
+    "transform": {
+      "^.+\\.ts$": "ts-jest"
+    },
+    "verbose": true
+  },
  "dependencies": {
-    "@actions/core": "^1.6.0",
-    "@actions/github": "^5.0.0",
-    "@types/glob": "^7.2.0",
-    "glob": "^7.2.0",
+    "@actions/core": "^1.10.0",
+    "@actions/github": "^5.1.1",
+    "@types/glob": "^8.0.0",
+    "glob": "^8.0.3",
    "untildify": "^4.0.0"
  },
  "devDependencies": {
-    "@types/jest": "^27.0.2",
-    "@types/node": "^16.11.6",
-    "jest": "^27.3.1",
-    "jest-circus": "^27.3.1",
-    "ts-jest": "^27.0.7",
-    "typescript": "^4.4.4"
+    "@types/jest": "^28.1.1",
+    "@types/node": "^18.11.8",
+    "jest": "^28.1.1",
+    "jest-circus": "^29.2.2",
+    "ts-jest": "^28.0.5",
+    "typescript": "^4.8.4"
  }
 }
--- a/src/Action.ts
+++ b/src/Action.ts
@@ -1,3 +1,4 @@
+import * as core from '@actions/core';
 import {Inputs} from "./Inputs";
 import {
    CreateOrUpdateReleaseResponse,
@@ -10,27 +11,40 @@ import {ArtifactUploader} from "./ArtifactUploader";
 import {GithubError} from "./GithubError";
 import {Outputs} from "./Outputs";
 import {ArtifactDestroyer} from "./ArtifactDestroyer";
+import {ReleaseValidator} from "./ReleaseValidator";
+import {ActionSkipper} from "./ActionSkipper";

 export class Action {
    private inputs: Inputs
    private outputs: Outputs
    private releases: Releases
-    private artifactDestroyer: ArtifactDestroyer
    private uploader: ArtifactUploader
+    private artifactDestroyer: ArtifactDestroyer
+    private skipper: ActionSkipper
+    
+    private releaseValidator: ReleaseValidator

    constructor(inputs: Inputs,
                outputs: Outputs,
                releases: Releases,
                uploader: ArtifactUploader,
-                artifactDestroyer: ArtifactDestroyer) {
+                artifactDestroyer: ArtifactDestroyer,
+                skipper: ActionSkipper) {
        this.inputs = inputs
        this.outputs = outputs
        this.releases = releases
        this.uploader = uploader
        this.artifactDestroyer = artifactDestroyer
+        this.skipper = skipper
+        this.releaseValidator = new ReleaseValidator(inputs.updateOnlyUnreleased)
    }

    async perform() {
+        if (await this.skipper.shouldSkip()) {
+            core.notice("Skipping action, release already exists and skipIfReleaseExists is enabled.")
+            return
+        }
+        
        const releaseResponse = await this.createOrUpdateRelease();
        const releaseData = releaseResponse.data
        const releaseId = releaseData.id
@@ -56,6 +70,9 @@ export class Action {
            } catch (error: any) {
                return await this.checkForMissingReleaseError(error)
            }
+            
+            // Fail if this isn't an unreleased release & updateOnlyUnreleased is enabled.
+            this.releaseValidator.validateReleaseUpdate(getResponse.data)

            return await this.updateRelease(getResponse.data.id)
        } else {
@@ -78,7 +95,7 @@ export class Action {
            this.inputs.updatedReleaseBody,
            this.inputs.commit,
            this.inputs.discussionCategory,
-            this.inputs.draft,
+            this.inputs.updatedDraft,
            this.inputs.updatedReleaseName,
            this.inputs.updatedPrerelease
        )
@@ -113,7 +130,7 @@ export class Action {
            this.inputs.createdReleaseBody,
            this.inputs.commit,
            this.inputs.discussionCategory,
-            this.inputs.draft,
+            this.inputs.createdDraft,
            this.inputs.generateReleaseNotes,
            this.inputs.createdReleaseName,
            this.inputs.createdPrerelease
--- a/src/ActionSkipper.ts
+++ b/src/ActionSkipper.ts
@@ -0,0 +1,27 @@
+import {Releases} from "./Releases";
+
+export interface ActionSkipper {
+    shouldSkip(): Promise<boolean>
+}
+
+export class ReleaseActionSkipper {
+    constructor(private skipIfReleaseExists: boolean,
+                private releases: Releases,
+                private tag: string) {
+    }
+
+    async shouldSkip(): Promise<boolean> {
+        if (!this.skipIfReleaseExists) {
+            // Bail if skip flag isn't set.
+            return false;
+        }
+
+        try {
+            const getResponse = await this.releases.getByTag(this.tag)
+            return getResponse.data != null
+        } catch (error: any) {
+            // There is either no release or something else went wrong. Either way, run the action.
+            return false;
+        }
+    }
+}
--- a/src/ArtifactGlobber.ts
+++ b/src/ArtifactGlobber.ts
@@ -3,6 +3,7 @@ import {Globber, FileGlobber} from "./Globber";
 import {Artifact} from "./Artifact";
 import untildify from "untildify";
 import {ArtifactPathValidator} from "./ArtifactPathValidator";
+import {PathNormalizer} from "./PathNormalizer";

 export interface ArtifactGlobber {
    globArtifactString(artifact: string, contentType: string, errorsFailBuild: boolean): Artifact[]
@@ -19,6 +20,7 @@ export class FileArtifactGlobber implements ArtifactGlobber {
        const split = /[,\n]/
        return artifact.split(split)
            .map(path => path.trimStart())
+            .map(path => PathNormalizer.normalizePath(path))
            .map(path => FileArtifactGlobber.expandPath(path))
            .map(pattern => this.globPattern(pattern, errorsFailBuild))
            .map((globResult) => FileArtifactGlobber.validatePattern(errorsFailBuild, globResult[1], globResult[0]))
--- a/src/Inputs.ts
+++ b/src/Inputs.ts
@@ -9,21 +9,24 @@ export interface Inputs {
    readonly artifactErrorsFailBuild: boolean
    readonly artifacts: Artifact[]
    readonly commit?: string
+    readonly createdDraft: boolean
+    readonly createdPrerelease: boolean
    readonly createdReleaseBody?: string
    readonly createdReleaseName?: string
    readonly discussionCategory?: string
-    readonly draft: boolean
    readonly generateReleaseNotes: boolean
    readonly owner: string
-    readonly createdPrerelease: boolean
    readonly removeArtifacts: boolean
    readonly replacesArtifacts: boolean
    readonly repo: string
+    readonly skipIfReleaseExists: boolean
    readonly tag: string
    readonly token: string
+    readonly updatedDraft?: boolean
    readonly updatedReleaseBody?: string
    readonly updatedReleaseName?: string
    readonly updatedPrerelease?: boolean
+    readonly updateOnlyUnreleased: boolean
 }

 export class CoreInputs implements Inputs {
@@ -61,15 +64,6 @@ export class CoreInputs implements Inputs {
        return allow == 'true'
    }

-    get createdReleaseBody(): string | undefined {
-        if (CoreInputs.omitBody) return undefined
-        return this.body
-    }
-
-    private static get omitBody(): boolean {
-        return core.getInput('omitBody') == 'true'
-    }
-
    private get body(): string | undefined {
        const body = core.getInput('body')
        if (body) {
@@ -84,6 +78,34 @@ export class CoreInputs implements Inputs {
        return ''
    }

+    get createdDraft(): boolean {
+        const draft = core.getInput('draft')
+        return draft == 'true'
+    }
+
+    get createdPrerelease(): boolean {
+        const preRelease = core.getInput('prerelease')
+        return preRelease == 'true'
+    }
+
+    get createdReleaseBody(): string | undefined {
+        if (CoreInputs.omitBody) return undefined
+        return this.body
+    }
+
+    private static get omitBody(): boolean {
+        return core.getInput('omitBody') == 'true'
+    }
+
+    get createdReleaseName(): string | undefined {
+        if (CoreInputs.omitName) return undefined
+        return this.name
+    }
+
+    private static get omitName(): boolean {
+        return core.getInput('omitName') == 'true'
+    }
+
    get commit(): string | undefined {
        const commit = core.getInput('commit')
        if (commit) {
@@ -92,11 +114,6 @@ export class CoreInputs implements Inputs {
        return undefined
    }

-    get createdReleaseName(): string | undefined {
-        if (CoreInputs.omitName) return undefined
-        return this.name
-    }
-
    get discussionCategory(): string | undefined {
        const category = core.getInput('discussionCategory')
        if (category) {
@@ -105,10 +122,6 @@ export class CoreInputs implements Inputs {
        return undefined
    }

-    private static get omitName(): boolean {
-        return core.getInput('omitName') == 'true'
-    }
-
    private get name(): string | undefined {
        const name = core.getInput('name')
        if (name) {
@@ -117,11 +130,6 @@ export class CoreInputs implements Inputs {

        return this.tag
    }
-
-    get draft(): boolean {
-        const draft = core.getInput('draft')
-        return draft == 'true'
-    }
    
    get generateReleaseNotes(): boolean {
        const generate = core.getInput('generateReleaseNotes')
@@ -135,20 +143,7 @@ export class CoreInputs implements Inputs {
        }
        return this.context.repo.owner
    }
-
-    get createdPrerelease(): boolean {
-        const preRelease = core.getInput('prerelease')
-        return preRelease == 'true'
-    }
-
-    private static get omitPrereleaseDuringUpdate(): boolean {
-        return core.getInput('omitPrereleaseDuringUpdate') == 'true'
-    }
-
-    get updatedPrerelease(): boolean | undefined {
-        if (CoreInputs.omitPrereleaseDuringUpdate) return undefined
-        return this.createdPrerelease
-    }
+    
    get removeArtifacts(): boolean {
        const removes = core.getInput('removeArtifacts')
        return removes == 'true'
@@ -166,6 +161,10 @@ export class CoreInputs implements Inputs {
        return this.context.repo.repo
    }

+    get skipIfReleaseExists(): boolean {
+        return core.getBooleanInput("skipIfReleaseExists")
+    }
+    
    get tag(): string {
        const tag = core.getInput('tag')
        if (tag) {
@@ -185,6 +184,24 @@ export class CoreInputs implements Inputs {
        return core.getInput('token', {required: true})
    }

+    get updatedDraft(): boolean | undefined {
+        if (CoreInputs.omitDraftDuringUpdate) return undefined
+        return this.createdDraft
+    }
+
+    private static get omitDraftDuringUpdate(): boolean {
+        return core.getInput('omitDraftDuringUpdate') == 'true'
+    }
+    
+    get updatedPrerelease(): boolean | undefined {
+        if (CoreInputs.omitPrereleaseDuringUpdate) return undefined
+        return this.createdPrerelease
+    }
+
+    private static get omitPrereleaseDuringUpdate(): boolean {
+        return core.getInput('omitPrereleaseDuringUpdate') == 'true'
+    }
+
    get updatedReleaseBody(): string | undefined {
        if (CoreInputs.omitBody || CoreInputs.omitBodyDuringUpdate) return undefined
        return this.body
@@ -198,6 +215,10 @@ export class CoreInputs implements Inputs {
        if (CoreInputs.omitName || CoreInputs.omitNameDuringUpdate) return undefined
        return this.name
    }
+    
+    get updateOnlyUnreleased(): boolean {
+        return core.getInput('updateOnlyUnreleased') == 'true'
+    }

    private static get omitNameDuringUpdate(): boolean {
        return core.getInput('omitNameDuringUpdate') == 'true'
--- a/src/Main.ts
+++ b/src/Main.ts
@@ -8,6 +8,7 @@ import {FileArtifactGlobber} from './ArtifactGlobber';
 import {GithubError} from './GithubError';
 import {CoreOutputs} from "./Outputs";
 import {GithubArtifactDestroyer} from "./ArtifactDestroyer";
+import {ActionSkipper, ReleaseActionSkipper} from "./ActionSkipper";

 async function run() {
    try {
@@ -28,10 +29,11 @@ function createAction(): Action {
    const inputs = new CoreInputs(globber, context)
    const outputs = new CoreOutputs()
    const releases = new GithubReleases(inputs, git)
+    const skipper = new ReleaseActionSkipper(inputs.skipIfReleaseExists, releases, inputs.tag)
    const uploader = new GithubArtifactUploader(releases, inputs.replacesArtifacts, inputs.artifactErrorsFailBuild)
    const artifactDestroyer = new GithubArtifactDestroyer(releases)
    
-    return new Action(inputs, outputs, releases, uploader, artifactDestroyer)
+    return new Action(inputs, outputs, releases, uploader, artifactDestroyer, skipper)
 }

 run();
--- a/src/PathNormalizer.ts
+++ b/src/PathNormalizer.ts
@@ -0,0 +1,7 @@
+import path from "path";
+
+export class PathNormalizer {
+    static normalizePath(pathString: string): string {
+        return pathString.split(path.sep).join("/")
+    } 
+}
--- a/src/ReleaseValidator.ts
+++ b/src/ReleaseValidator.ts
@@ -0,0 +1,20 @@
+export class ReleaseValidator {
+    constructor(private updateOnlyUnreleased: boolean) {
+    }
+
+    validateReleaseUpdate(releaseResponse: ReleaseStageArguments) {
+        if (!this.updateOnlyUnreleased) {
+            return
+        }
+
+        if (!releaseResponse.draft && !releaseResponse.prerelease) {
+            throw new Error(`Tried to update "${releaseResponse.name ?? "release"}" which is neither a draft or prerelease. (updateOnlyUnreleased is on)`)
+        }
+    }
+}
+
+export type ReleaseStageArguments = {
+    draft: boolean
+    name: string | null
+    prerelease: boolean
+}
--- a/yarn.lock
+++ b/yarn.lock