如何在AngularCLI中的构建时插入内部版本号或时间戳 [英] How to insert a Build Number or Timestamp at build time in AngularCLI

问题描述

我想在我的Angular2应用程序的某处有一个时间戳或内部版本号，以便告诉用户是否正在使用旧的缓存版本.

如何在AOT编译/构建时使用Angular2中的AngularCLI做到这一点?

解决方案

1. 安装插件 npm install replace-in-file --save-dev

2. 添加到产品环境src/environments/environment.prod.ts新 财产

    export const environment = {
       production: true,
       version: '{BUILD_VERSION}'
   }
    

3. 将构建文件replace.build.js添加到文件夹的根目录

    var replace = require('replace-in-file');
   var buildVersion = process.argv[2];
   const options = {
       files: 'src/environments/environment.prod.ts',
       from: /{BUILD_VERSION}/g,
       to: buildVersion,
       allowEmptyPaths: false,
   };
   
   try {
       let changedFiles = replace.sync(options);
       console.log('Build version set: ' + buildVersion);
   }
   catch (error) {
       console.error('Error occurred:', error);
   }
    

4. 将脚本添加到package.json

   "updateBuild": "node ./replace.build.js"
   

5. 在应用中使用environment.version

6. 构建调用之前npm run updateBuild -- 1.0.1

PS.您必须始终记住，{BUILD_VERSION}从未提交.

PS.我在我的博客中写了一个更好的解决方案

PS.3 @ julien-100000提到您不应提交具有更新版本的environment.prod.ts.版本更新只能在构建过程中进行.而且永远都不要犯.

I want to have a timestamp or build number somewhere on my Angular2 App so I can tell if a user is using an old cached version or not.

How to do this with AngularCLI in Angular2 at AOT compile/build time?

解决方案

1. Install plugin npm install replace-in-file --save-dev

2. Add to prod environment src/environments/environment.prod.ts new property

   export const environment = {
       production: true,
       version: '{BUILD_VERSION}'
   }
   

3. Add build file replace.build.js to root of your folder

   var replace = require('replace-in-file');
   var buildVersion = process.argv[2];
   const options = {
       files: 'src/environments/environment.prod.ts',
       from: /{BUILD_VERSION}/g,
       to: buildVersion,
       allowEmptyPaths: false,
   };
   
   try {
       let changedFiles = replace.sync(options);
       console.log('Build version set: ' + buildVersion);
   }
   catch (error) {
       console.error('Error occurred:', error);
   }
   

4. add scripts to package.json

   "updateBuild": "node ./replace.build.js"
   

5. Use environment.version in your app

6. Before build call npm run updateBuild -- 1.0.1

PS. You must always remember that {BUILD_VERSION} is never committed.

PS. I wrote a bit better solution in my blog

PS.3 as @julien-100000 mentioned you should not commit environment.prod.ts with updated version. Version update must happen only in build process. And should never be committed.

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