我目前正在完成Coursera上的“前端Web UI框架和工具：Bootstrap 4”课程，并且遇到了NPM脚本问题。在package.json文件中创建脚本以最小化文件并将它们传输到分发文件夹时，在尝试对根文件夹中的三个单独的html文件运行usemin脚本时，我一直收到ELIFECYCLE错误。对于我的一生，我无法弄清楚为什么我会不断收到此错误，因为它的编写与课堂上讲授的完全相同。我还尝试过对这些文件分别使用usemin，其中一个文件有效，而其他两个则不起作用。由于我对编程没有足够的经验，因此我将不胜感激，并且正在尝试通过此类在线课程来学习更多知识，并且已经在这个问题上停留了一个多星期，这将极大地感谢您的帮助。我也无法通过Google搜索找到有关此问题的任何有用信息。
{
"name": "confusion",
"version": "1.0.0",
"description": "This is a website for Ristorante Con Fusion",
"main": "index.html",
"scripts": {
"start": "npm run watch:all",
"test": "echo \"Error: no test specified\" && exit 1",
"lite": "lite-server",
"scss": "node-sass -o css/ css/",
"watch:scss": "onchange \"css/*.scss\" -- npm run scss",
"watch:all": "parallelshell \"npm run watch:scss\" \"npm run lite\"",
"clean": "rimraf dist",
"copyfonts": "copyfiles -f node_modules/font-awesome/fonts/* dist/",
"imagemin": "imagemin img/* -o dist/img",
"usemin": "usemin contactus.html -d dist --htmlmin -o dist/contactus.html && usemin aboutus.html -d dist --htmlmin -o dist/aboutus.html && usemin index.html -d dist --htmlmin -o dist/index.html",
"build": "npm run clean && npm run copyfonts && npm run imagemin && npm run usemin"
},
"author": "",
"license": "ISC",
"devDependencies": {
"copyfiles": "^2.1.0",
"cssmin": "^0.4.3",
"htmlmin": "0.0.7",
"imagemin": "^6.1.0",
"lite-server": "^2.3.0",
"node-sass": "^4.11.0",
"onchange": "^3.3.0",
"parallelshell": "^3.0.1",
"rimraf": "^2.6.2",
"uglifyjs": "^2.4.11",
"usemin": "^0.5.0",
"usemin-cli": "^0.5.1"
},
"dependencies": {
"bootstrap": "^4.0.0",
"bootstrap-social": "^5.1.1",
"font-awesome": "^4.7.0",
"jquery": "^3.3.1",
"popper.js": "^1.12.9"
}
}
这是我收到的错误日志：
0 info it worked if it ends with ok
1 verbose cli [ 'C:\\Program Files\\nodejs\\node.exe',
1 verbose cli 'C:\\Users\\User\\AppData\\Roaming\\npm\\node_modules\\npm\\bin\\npm-cli.js',
1 verbose cli 'run',
1 verbose cli 'usemin' ]
2 info using npm@6.5.0
3 info using node@v10.13.0
4 verbose run-script [ 'preusemin', 'usemin', 'postusemin' ]
5 info lifecycle confusion@1.0.0~preusemin: confusion@1.0.0
6 info lifecycle confusion@1.0.0~usemin: confusion@1.0.0
7 verbose lifecycle confusion@1.0.0~usemin: unsafe-perm in lifecycle true
8 verbose lifecycle confusion@1.0.0~usemin: PATH: C:\Users\User\AppData\Roaming\npm\node_modules\npm\node_modules\npm-lifecycle\node-gyp-bin;C:\Users\User\Desktop\Programming Courses\CoursEra\Front-End Web UI Frameworks and Tools\Bootstrap4\conFusion\node_modules\.bin;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Program Files (x86)\Skype\Phone\;C:\Program Files\nodejs\;C:\Program Files\Git\cmd;C:\Program Files\Sublime Text 3;C:\Users\User\AppData\Roaming\npm
9 verbose lifecycle confusion@1.0.0~usemin: CWD: C:\Users\User\Desktop\Programming Courses\CoursEra\Front-End Web UI Frameworks and Tools\Bootstrap4\conFusion
10 silly lifecycle confusion@1.0.0~usemin: Args: [ '/d /s /c',
10 silly lifecycle 'usemin contactus.html -d dist --htmlmin -o dist/contactus.html && usemin aboutus.html -d dist --htmlmin -o dist/aboutus.html && usemin index.html -d dist --htmlmin -o dist/index.html' ]
11 silly lifecycle confusion@1.0.0~usemin: Returned: code: 1 signal: null
12 info lifecycle confusion@1.0.0~usemin: Failed to exec usemin script
13 verbose stack Error: confusion@1.0.0 usemin: `usemin contactus.html -d dist --htmlmin -o dist/contactus.html && usemin aboutus.html -d dist --htmlmin -o dist/aboutus.html && usemin index.html -d dist --htmlmin -o dist/index.html`
13 verbose stack Exit status 1
13 verbose stack at EventEmitter.<anonymous> (C:\Users\User\AppData\Roaming\npm\node_modules\npm\node_modules\npm-lifecycle\index.js:301:16)
13 verbose stack at EventEmitter.emit (events.js:182:13)
13 verbose stack at ChildProcess.<anonymous> (C:\Users\User\AppData\Roaming\npm\node_modules\npm\node_modules\npm-lifecycle\lib\spawn.js:55:14)
13 verbose stack at ChildProcess.emit (events.js:182:13)
13 verbose stack at maybeClose (internal/child_process.js:962:16)
13 verbose stack at Process.ChildProcess._handle.onexit (internal/child_process.js:251:5)
14 verbose pkgid confusion@1.0.0
15 verbose cwd C:\Users\User\Desktop\Programming Courses\CoursEra\Front-End Web UI Frameworks and Tools\Bootstrap4\conFusion
16 verbose Windows_NT 6.1.7601
17 verbose argv "C:\\Program Files\\nodejs\\node.exe" "C:\\Users\\User\\AppData\\Roaming\\npm\\node_modules\\npm\\bin\\npm-cli.js" "run" "usemin"
18 verbose node v10.13.0
19 verbose npm v6.5.0
20 error code ELIFECYCLE
21 error errno 1
22 error confusion@1.0.0 usemin: `usemin contactus.html -d dist --htmlmin -o dist/contactus.html && usemin aboutus.html -d dist --htmlmin -o dist/aboutus.html && usemin index.html -d dist --htmlmin -o dist/index.html`
22 error Exit status 1
23 error Failed at the confusion@1.0.0 usemin script.
23 error This is probably not a problem with npm. There is likely additional logging output above.
24 verbose exit [ 1, true ]
答案 0 :(得分：0)
我在做同样的课程，并且遇到类似的错误。但是，我只是能够解决它。我通过重新安装所有开发依赖项并使用当前版本（而不是本课程中的版本）来完成此操作。我也确实将usemin命令（根据我在这里找到的另一个来源）更改为
“ imagemin”：“ imagemin img / * --out-dir = dist / img”，
但是，它仍然无法正常工作，因此我使用以下工具检查了所有文件中的错误：
https://www.freeformatter.com/java-regex-tester.html用于测试html文件； http://www.webtoolkitonline.com/javascript-tester.html用于测试.js文件，而https://jsonlint.com/?json=用于测试package.json文件是否存在错误。
我纠正了所有文件后，命令“ npm run build”终于起作用了。