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A GitHub Action that checks whether a given GitHub release tag does not already exist.

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mdb/ensure-unpublished-release-action

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build-and-test

ensure-unpublished-release-action

A GitHub Action that checks if a given GitHub release tag already exists.

In default configuration, ensure-unpublished-release-action succeeds if the provided release tag is unique and does not already exist, and fails if the tag has already been published as a GitHub release.

The action produces an exists output whose value is true or false.

Usage

- uses: mdb/ensure-unpublished-release-action
  with:
    # Required; a GitHub release tag (typically the release name)
    tag:

    # Required; a GitHub access token (typically `secrets.GITHUB_TOKEN`)
    token:

Example

name: Check that release version does not already exist
on:
  pull_request:

jobs:
  ensure-unpublished-version:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2

      - name: Get package.json version
        run: echo "PACKAGE_VERSION=$(jq -r .version package.json)" >> $GITHUB_ENV

      # Fail the build if package.json's 'version' property specifies
      # a value associated with an already-existing release:
      - uses: mdb/ensure-unpublished-release-action@main
        with:
          tag: ${{ env.PACKAGE_VERSION }}
          token: ${{ secrets.GITHUB_TOKEN }}

Example failure:

failure example

See ensure-unpublished-release-action's own .github/workflows for an additional example.

Development

Install dependencies:

npm install

Format code, lint, compile TypeScript, package code for distribution, and run tests:

npm run all

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A GitHub Action that checks whether a given GitHub release tag does not already exist.

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