travis-ci在grunt-contrib-imagemin任務上構建失敗（無法准備未定義的屬性“ contents”

Question

在travis-ci構建grunt-contrib-imagemin任務時遇到錯誤...

Warning: Running "imagemin:dist" (imagemin) task
    Fatal error: Cannot read property 'contents' of undefined

grunt構建在我的本地計算機上成功運行，但是通過travis-ci執行時失敗

Gruntfile.js

imagemin: {
      dist: {
        files: [{
          expand: true,
          cwd: '<%= yeoman.app %>/images',
          src: '{,*/}*.{png,jpg,jpeg,gif}',
          dest: '<%= yeoman.dist %>/images'
        }]
      }
    },

本地Grunt構建（輸出）

Running "imagemin:dist" (imagemin) task
    Minified 9 images (saved 77.32 kB)

    Done, without errors.

    Execution Time (2016-01-13 17:04:49 UTC)
    imagemin:dist  1.6s  100%
    Total 1.6s

Travis CI grunt構建（輸出）

Warning: Running "imagemin:dist" (imagemin) task
    Fatal error: Cannot read property 'contents' of undefined


    Execution Time (2016-01-13 17:00:32 UTC)
    loading tasks    9ms   2%
    imagemin:dist  441ms  98%
    Total 450ms Use --force to continue.

        Aborted due to warnings.

我試圖確定在任務中聲明src的方式中是否存在語法問題...但是，情況似乎並非如此...因為我可以成功地在本地完成構建，而不會出現一些錯誤語法樣式，包括Grunt為grunt-contrib-imagemin提供的示例

參考： https : //github.com/gruntjs/grunt-contrib-imagemin

dynamic: {                         // Another target
      files: [{
        expand: true,                  // Enable dynamic expansion
        cwd: 'src/',                   // Src matches are relative to this path
        src: ['**/*.{png,jpg,gif}'],   // Actual patterns to match
        dest: 'dist/'                  // Destination path prefix
      }]

有什么想法或建議嗎？

Answer 1

作為后續...

我已通過一個簡單的解決方法成功解決了此問題，方法是將“ grunt-contrib-imagemin”：“ ^ 1.0.0”換為“ grunt-image”：“ ^ 1.2.1” ...，然后更新了我的Gruntfile。 js通過將imagemin任務替換為image任務...

本地版本和Travis CI版本現在都取得了成功，並取得了相同的結果。

Gruntfile.js

image: {
      dist: {
        files: [{
          expand: true,
          cwd: '<%= yeoman.app %>/images',
          src: '{,*/}*.{png,jpg,jpeg,gif}',
          dest: '<%= yeoman.dist %>/images'
        }]
      }
    },

以下是通過本地計算機和travis-ci生成的示例輸出：

Running "image:dist" (image) task
✔ app/images/npmjs.png -> before=3.75 kB after=158 B reduced=3.59 kB(95.9%)
✔ app/images/bootstrap.png -> before=41.5 kB after=21.93 kB reduced=19.57 kB(47.2%)
✔ app/images/bowerjs.png -> before=17.71 kB after=6.65 kB reduced=11.06 kB(62.5%)
✔ app/images/nodejs.png -> before=8.45 kB after=2.93 kB reduced=5.51 kB(65.3%)
✔ app/images/starterlog.png -> before=34.53 kB after=10.58 kB reduced=23.95 kB(69.3%)
✔ app/images/gruntjs.png -> before=84.38 kB after=27.98 kB reduced=56.4 kB(66.8%)
✔ app/images/firebase.png -> before=32.03 kB after=12.19 kB reduced=19.83 kB(61.9%)
✔ app/images/fontawesome.png -> before=12.01 kB after=5.63 kB reduced=6.38 kB(53.1%)
✔ app/images/angular.png -> before=41.5 kB after=18.63 kB reduced=22.87 kB(55.1%)

Done, without errors.

Execution Time (2016-01-13 17:47:44 UTC)
image:dist  2.6s  99%
Total 2.6s

這個帶有grunt-image的解決方案正在我的Angular + Firebase應用程序上運行...我正在通過travis-ci和部署工具dpl將其部署到Firebase Hosting。

但是我還沒有在travis-ci中用grunt-contrib-imagemin確定原始bug /問題的解決方案

任何想法將不勝感激。 干杯!

Answer 2

1. 刪除node_modules

2. 更改package.json以使用“ grunt-contrib-imagemin”：“ 1.0.0”和“ vinyl-fs”：“ 2.3.1”

3. 做npm install