keywords: deploy, publish, release, CLI, npm, package.json
在上一篇文章中已經有透露如果要對 semantic-release 套用外掛(plugin)或進行更多的設定,可以在根目錄建立一支 .releaserc.json 的檔案,現在我們一樣可以透過這支檔案,來讓 semantic-release 自動產生 CHANGELOG.md 的檔案。
安裝 semantic-release 外掛
預設的情況下,semantic-release 就已經安裝了幾個外掛(plugin),像是 :
"@semantic-release/commit-analyzer" "@semantic-release/github" "@semantic-release/npm" "@semantic-release/release-notes-generator"
為了要產生 CHANGELOG 檔案,並且保存推進 git 中,需要再安裝 @semantic-release/changelog 和 @semantic-release/git 這兩個外掛:
$ npm install @semantic-release/changelog @semantic-release/git -D
設定 .releaserc.json
接著在根目錄底下新增一隻 .releaserc.json 的檔案(如果已經建過就不用重複新增),在這支檔案裡貼上:
// .releaserc.json { "plugins": [ "@semantic-release/commit-analyzer", "@semantic-release/release-notes-generator", "@semantic-release/changelog", "@semantic-release/npm", "@semantic-release/git" ] }
建立好設定檔後,commit 並推上 Github,這時候在 Travis CI 持續整合的過程中,就會新增一支 CHANGELOG.md 的檔案在根目錄了:
這裡你可以注意到:
- 最後的 git commit 是由 semantic-release-bot 所建立的,這是透過 @semantic-release/git 這個套件達到的。
- 不知道你先前有沒有發現到,之前雖然每次推上 Github 或發佈到 npm 上時的版號都有不斷更新,但 git 中 package.json 檔案裡面的版號卻都沒有改變,這同樣是因為之前沒有安裝 @semantic-release/git 的關係,所以雖然 Github 和 npm 上的版號更新了,但因為 semantic-release 沒有把更新後的 package.json 檔 commit 回我們的 repository,所以本機 package.json 中的版號才會都沒有更動。
- CHANGELOG.md 檔案的內容有更新了,這是透過 @semantic-release/changelog 這個套件達到的。CHANGELOG 中的內容會依據 commit 的內容進行更新:
semantic-release 的外掛設定
在了解如何產生 CHANGELOG.md 檔,並透過 @semantic-release/git 來把變更的內容推回 git 後,我們可以再來看一下 semantic-release 外掛的設定:
@semantic-release/changelog
在 @semantic-release/changelog 這個套件中,預設會在根目錄新增一支 CHANGELOG.md 的檔案,如果你想要修改 CHANGELOG 檔放置的路徑或標題(title),一樣可以在 .releaserc.json 中進行設定:
// .releaserc.json { "plugins": [ "@semantic-release/commit-analyzer", "@semantic-release/release-notes-generator", // 修改 changelog 檔預設的路徑和標題 ["@semantic-release/changelog", { "changelogFile": "docs/CHANGELOG.md", "changelogTitle": "This is Title" }], // 預設會 commit 根目錄的 CHANGELOG.md 檔,因此要告訴它說去其他路徑取得 CHANGELOG 檔 ["@semantic-release/git", { "assets": ["docs/CHANGELOG.md"], }] ] }
@semantic-release/git
透過 @semantic-release/git 這個套件,可以告訴 semantic-release 哪些檔案是它可以 commit 進我們的專案,並且可以修改 commit 的訊息。預設的情況下它可以 commit 進專案的檔案包括:
['CHANGELOG.md', 'package.json', 'package-lock.json', 'npm-shrinkwrap.json']
如果檔案的路徑有變更,或者有些檔案是打包後才產生,希望可以大家可以透過 github 取得的,一樣可以在這裡進行設定,以下面的設定為例,除了 CHANGELOG.md, package.json 和 package-lock.json 會進 git 之外,我們把打包後會產生的 extension.zip 檔案也進 git,如此使用者便會在 Github 上看得到這隻檔案:
// .releaserc.json { "plugins": [ "@semantic-release/commit-analyzer", "@semantic-release/release-notes-generator", "@semantic-release/changelog", ["@semantic-release/git", { "assets": [ "CHANGELOG.md", "package.json", "package-lock.json", "extension.zip" ] }] ] }
@semantic-release/npm
如我你的套件並不需要發佈到 npm 上,除了可以透過上一篇的方式,設定 npmPublish: false 外,也可以在 .releaserc.json 中把 @semantic-release/npm 移掉也可以達到一樣的效果。
錯誤處理:在 Travis CI 上使用出現 Cannot find module 的問題
如果你在 Travis CI 執行的過程中出現類似的錯誤訊息時:
Cannot find module '@semantic-release/changelog'
Cannot find module '@semantic-release/git'
可以修改 .travis.yaml 的檔案,將 script 的地方改成:
script: npx -p @semantic-release/changelog -p @semantic-release/git -p semantic-release semantic-release
下一步
現在我們已經完成了 semantic-release 的基本設定,透過 semantic-release 可以幫助我們省下不少的時間,自動更新套件版號、自動發佈套件到 npm,以及自動產生 CHANGELOG 檔等等...。在下一篇文章中,將會說明如何套用大家在 README 中常見各種標章(badge):
其中最重要的就是測試覆蓋率拉!就讓我們到下一篇中說明吧!
參考
- Plugins @ semantic-release
- @semantic-release/changelog @ github
- @semantic-release/git @ github
- @semantic-release/npm @ github
- How to automatically pull changelog and git modules when issuing npx semantic-release? @ Github Issues
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