Twitter bootstrap 运行'时出错；npm运行区'；构建bootstrap4

我今天下载并提取了Bootstrap 4，发现一个错误：

设置

pwd
/Volumes/projects/bs4_temp/bootstrap-4.0.0
kevin $ dir
total 1432
drwxr-xr-x  14 kevin  staff   16384 28 May 15:36 .
drwxr-xr-x   8 kevin  staff   16384 29 May 15:15 ..
-rwxr-xr-x   1 kevin  staff     313 18 Jan 09:29 .babelrc.js
-rwxr-xr-x   1 kevin  staff     208 18 Jan 09:29 .editorconfig
-rwxr-xr-x   1 kevin  staff      56 18 Jan 09:29 .eslintignore
-rwxr-xr-x   1 kevin  staff    7123 18 Jan 09:29 .eslintrc.json
-rwxr-xr-x   1 kevin  staff     359 18 Jan 09:29 .gitattributes
drwxr-xr-x   2 kevin  staff   16384 18 Jan 09:29 .github
-rwxr-xr-x   1 kevin  staff     517 18 Jan 09:29 .gitignore
-rwxr-xr-x   1 kevin  staff      45 18 Jan 09:29 .stylelintignore
-rwxr-xr-x   1 kevin  staff    6685 18 Jan 09:29 .stylelintrc
-rwxr-xr-x   1 kevin  staff     782 18 Jan 09:29 .travis.yml
-rwxr-xr-x   1 kevin  staff      17 18 Jan 09:29 CNAME
-rwxr-xr-x   1 kevin  staff    3217 18 Jan 09:29 CODE_OF_CONDUCT.md
-rwxr-xr-x   1 kevin  staff     199 18 Jan 09:29 Gemfile
-rwxr-xr-x   1 kevin  staff    1905 18 Jan 09:29 Gemfile.lock
-rwxr-xr-x   1 kevin  staff    1131 18 Jan 09:29 LICENSE
-rwxr-xr-x   1 kevin  staff    9138 18 Jan 09:29 README.md
-rwxr-xr-x   1 kevin  staff    2505 18 Jan 09:29 _config.yml
drwxr-xr-x   2 kevin  staff   16384 18 Jan 09:29 _data
drwxr-xr-x   3 kevin  staff   16384 18 Jan 09:29 _includes
drwxr-xr-x   2 kevin  staff   16384 18 Jan 09:29 _layouts
drwxr-xr-x   2 kevin  staff   16384 18 Jan 09:29 _plugins
drwxr-xr-x   7 kevin  staff   16384 18 Jan 09:29 assets
drwxr-xr-x   2 kevin  staff   16384 18 Jan 09:29 build
-rwxr-xr-x   1 kevin  staff     744 18 Jan 09:29 composer.json
drwxr-xr-x   4 kevin  staff   16384 18 Jan 09:29 dist
drwxr-xr-x   3 kevin  staff   16384 18 Jan 09:29 docs
-rwxr-xr-x   1 kevin  staff    5430 18 Jan 09:29 favicon.ico
-rwxr-xr-x   1 kevin  staff    4384 18 Jan 09:29 index.html
drwxr-xr-x   5 kevin  staff   16384 18 Jan 09:29 js
drwxr-xr-x   2 kevin  staff   16384 18 Jan 09:29 nuget
-rwxr-xr-x   1 kevin  staff  433474 18 Jan 09:29 package-lock.json
-rwxr-xr-x   1 kevin  staff     530 18 Jan 09:29 package.js
-rwxr-xr-x   1 kevin  staff    9152 18 Jan 09:29 package.json
-rwxr-xr-x   1 kevin  staff     123 18 Jan 09:29 robots.txt
-rwxr-xr-x   1 kevin  staff     249 18 Jan 09:29 sache.json
drwxr-xr-x   4 kevin  staff   16384 18 Jan 09:29 scss
-rwxr-xr-x   1 kevin  staff     114 18 Jan 09:29 sw.js

kevin $ npm --version
6.1.0

错误

kevin $ npm run dist

> bootstrap@4.0.0 dist /Volumes/projects/bs4_temp/bootstrap-4.0.0
> npm-run-all --parallel css js

sh: npm-run-all: command not found
npm ERR! file sh
npm ERR! code ELIFECYCLE
npm ERR! errno ENOENT
npm ERR! syscall spawn
npm ERR! bootstrap@4.0.0 dist: `npm-run-all --parallel css js`
npm ERR! spawn ENOENT
npm ERR! 
npm ERR! Failed at the bootstrap@4.0.0 dist script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.
npm WARN Local package.json exists, but node_modules missing, did you mean to install?

npm ERR! A complete log of this run can be found in:
npm ERR!     /Users/kevin/.npm/_logs/2018-05-29T16_20_07_838Z-debug.log

观察结果

[忽略这一点：我相信当前的版本是4.1，但尽管我查看并尝试了多次，但每次尝试我似乎都在下载4.0.0。]

编辑-从另一台计算机下载4.1.1。这会产生相同的错误，并且没有节点_modules dir

我上次在2月（v4.0.0）看到这个，并在旧目录中运行相同的NPM命令。比较这两个目录，我在Feb中使用的目录有一个node_modules sub dir，而当前的ZIP没有（git似乎也没有）

这是我的问题吗？如果是，为什么现在ZIP文件中缺少节点模块？

通常在发布到web时包括节点模块

相反，用户应该使用NPM安装软件包（在本例中）。只需运行npm安装，npm就会为您创建文件夹

---

Ps.NPM从package.json找到模块列表

Run

NPM install

，将创建node_modules文件夹请参见此处未包含的原因：谢谢，与NPM install一起使用。如果你想回答这个问题？