[英]How can I use 'watch' in my npm scripts?
我有以下目录结构:
我的package.json
看起来像这样:
{
"name": "personal_site",
"version": "1.0.0",
"description": "My personal website.",
"main": "index.js",
"scripts": {
"test": "echo \"Error: no test specified\" && exit 1",
"node-sass": "node-sass --output-style compressed --include-path node_modules/bourbon/app/assets/stylesheets/ --include-path node_modules/bourbon-neat/app/assets/stylesheets/ 'src/scss/styles.scss' 'dist/css/bundle.min.css'",
"html-minifier": "html-minifier --collapse-whitespace --remove-comments --remove-attribute-quotes -o 'dist/index.html' 'src/index.html'",
"imagemin": "imagemin src/images dist/images",
"serve": "http-server ./dist"
},
"author": "Dean Gibson",
"license": "ISC",
"dependencies": {
"bourbon": "^4.2.6",
"bourbon-neat": "^1.7.4",
"normalize-scss": "^4.0.3"
},
"devDependencies": {
"html-minifier": "^1.3.0",
"http-server": "^0.9.0",
"node-sass": "^3.4.2"
}
}
所以首先,我必须单独运行这些脚本中的每一个,例如npm run node-sass
或npm run html-minifier
等。我最想要的是运行npm serve
它将执行以下操作:
src
文件夹中的所有内容,并在文件更改时运行相应的脚本,例如node-sass
等。我怎样才能最好地解决这个问题?
您可以使用nodemon
查看您的目录。
一种解决方案是创建三个监视脚本,每个任务一个:
watch:node-sass
,watch:html-minifier
,和watch:imagemin
。 然后有一个中央脚本watch
开始三个:
{
"name": "personal_site",
"version": "1.0.0",
"description": "My personal website.",
"main": "index.js",
"scripts": {
"test": "echo \"Error: no test specified\" && exit 1",
"node-sass": "node-sass --output-style compressed --include-path node_modules/bourbon/app/assets/stylesheets/ --include-path node_modules/bourbon-neat/app/assets/stylesheets/ 'src/scss/styles.scss' 'dist/css/bundle.min.css'",
"html-minifier": "html-minifier --collapse-whitespace --remove-comments --remove-attribute-quotes -o 'dist/index.html' 'src/index.html'",
"imagemin": "imagemin src/images dist/images",
"serve": "http-server ./dist",
"watch:node-sass": "nodemon -e scss -x \"npm run node-sass\"",
"watch:html-minifier": "nodemon -e html -x \"npm run html-minifier\"",
"watch:imagemin": "nodemon --watch src/images -x \"npm run imagemin\"",
"watch": "npm run watch:node-sass & npm run watch:html-minifier & npm run watch:imagemin"
},
"author": "Dean Gibson",
"license": "ISC",
"dependencies": {
"bourbon": "^4.2.6",
"bourbon-neat": "^1.7.4",
"normalize-scss": "^4.0.3"
},
"devDependencies": {
"html-minifier": "^1.3.0",
"http-server": "^0.9.0",
"node-sass": "^3.4.2"
}
}
另 请阅读: 如何使用 npm 作为构建工具。
我建议onchange
,请参阅此样板。
例如,
"watch:css": "onchange 'src/scss/*.scss' -- npm run build:css",
或
"watch:js": "onchange 'src/js/*.js' -- npm run build:js",
不需要咕噜声或吞咽!
对于这种脚本化案例,最广泛采用的工具是 gulp 或 grunt。 它们是您经常会遇到的工具。 您还可以为您的 minify/concat/copy/imagemin 找到他们的 grunt/gulp 库,以及观察者库,以便在您更改代码时更改它们。 Nodemon/forever/pm2 也有监视功能来重启你的 http 服务器
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