我开始使用带有webpack 2的Angular 2.在运行webpack时我遇到了以下错误
WARNING in ./~/@angular/core/@angular/core.es5.js
5870:15-36 Critical dependency: the request of a dependency is an expression
WARNING in ./~/@angular/core/@angular/core.es5.js
5886:15-102 Critical dependency: the request of a dependency is an expression
ERROR in ./app/dashboard/hero-detail.component.css
Module parse failed: D:\WorkSpace\Angular2\Login\app\dashboard\hero-detail.compo
nent.css Unexpected token (1:6)
You may need an appropriate loader to handle this file type.
| label {
| display: inline-block;
| width: 3em;
@ ./app/dashboard/hero-detail.component.ts 45:17-55
@ ./app/dashboard/index.ts
@ ./app/app.module.ts
@ ./app/main.ts
ERROR in ./app/dashboard/dashboard.component.css
Module parse failed: D:\WorkSpace\Angular2\Login\app\dashboard\dashboard.compone
nt.css Unexpected token (1:6)
You may need an appropriate loader to handle this file type.
| [class*='col-'] {
| float: left;
| padding-right: 20px;
@ ./app/dashboard/dashboard.component.ts 32:17-53
@ ./app/dashboard/index.ts
@ ./app/app.module.ts
@ ./app/main.ts
ERROR in ./app/dashboard/heroes.component.css
Module parse failed: D:\WorkSpace\Angular2\Login\app\dashboard\heroes.component.
css Unexpected token (1:0)
You may need an appropriate loader to handle this file type.
| .selected {
| background-color: #CFD8DC !important;
| color: white;
@ ./app/dashboard/heroes.component.ts 65:17-50
@ ./app/dashboard/index.ts
@ ./app/app.module.ts
@ ./app/main.ts
ERROR in ./app/dashboard/hero-search.component.css
Module parse failed: D:\WorkSpace\Angular2\Login\app\dashboard\hero-search.compo
nent.css Unexpected token (1:0)
You may need an appropriate loader to handle this file type.
| .search-result{
| border-bottom: 1px solid gray;
| border-left: 1px solid gray;
@ ./app/dashboard/hero-search.component.ts 59:17-55
@ ./app/dashboard/index.ts
@ ./app/app.module.ts
@ ./app/main.ts
Child html-webpack-plugin for "index.html":
[0] ./~/html-webpack-plugin/lib/loader.js!./index.html 341 bytes {0} [built]
以下是我的package.json
"devDependencies": {
"@types/core-js": "^0.9.41",
"@types/jasmine": "2.5.36",
"@types/node": "^6.0.45",
"angular2-template-loader": "^0.6.0",
"awesome-typescript-loader": "^3.0.4",
"css-loader": "^0.28.0",
"extract-text-webpack-plugin": "^2.1.0",
"file-loader": "^0.9.0",
"html-loader": "^0.4.5",
"html-webpack-plugin": "^2.16.1",
"jasmine-core": "^2.4.1",
"karma": "^1.2.0",
"karma-chrome-launcher": "^2.0.0",
"karma-jasmine": "^1.0.2",
"karma-sourcemap-loader": "^0.3.7",
"karma-webpack": "^2.0.1",
"null-loader": "^0.1.1",
"postcss-cssnext": "^2.10.0",
"postcss-loader": "^1.3.3",
"postcss-responsive-type": "^0.5.1",
"postcss-smart-import": "^0.6.12",
"raw-loader": "^0.5.1",
"resolve-url-loader": "^2.0.2",
"rimraf": "^2.5.2",
"sass-loader": "^6.0.3",
"style-loader": "^0.13.1",
"stylus-loader": "^3.0.1",
"to-string-loader": "^1.1.5",
"typescript": "^2.0.9",
"webpack": "2.2.1",
"webpack-dev-server": "2.4.1",
"webpack-merge": "^3.0.0"
}
这是我的webpack.config.js
var webpack = require('webpack');
var HtmlWebpackPlugin = require('html-webpack-plugin');
var ExtractTextPlugin = require('extract-text-webpack-plugin');
var path = require('path');
module.exports = {
entry: {
'app': './app/main.ts',
'vendor': './vendor.ts'
},
output: {
filename: "[name].js",
path: path.resolve(__dirname, 'dist')
},
resolve: {
extensions: ['.ts', '.js']
},
module: {
rules: [
{
test: /\.ts$/,
loaders: ['awesome-typescript-loader', 'angular2-template-loader']
},
{
test: /\.html$/,
use: [{
loader: 'html-loader',
options: {
minimize: true
}
}],
},
{
test: /\.(png|jpe?g|gif|svg|woff|woff2|ttf|eot|ico)$/,
loader: 'file-loader?name=assets/[name].[hash].[ext]'
},
{
test: /\.css$/,
include: /app(\/|\\)css/,
use: ExtractTextPlugin.extract({
fallback: "style-loader",
use: "css-loader"
})
}
]
},
plugins: [
// Workaround for angular/angular#11580
new webpack.ContextReplacementPlugin(
// The (\\|\/) piece accounts for path separators in *nix and Windows
/angular(\\|\/)core(\\|\/)(esm(\\|\/)src|src)(\\|\/)linker/,
'app', // location of your src
{} // a map of your routes
),
new webpack.optimize.CommonsChunkPlugin({
name: 'vendor'
}),
new HtmlWebpackPlugin({
template: './index.html'
}),
new ExtractTextPlugin("bundle.css")
]
};
如果我删除包含在css中的内置加载器是成功的但是我在遇到URL时遇到了不同的错误
Uncaught Error: Expected 'styles' to be an array of strings.
at assertArrayOfStrings (http://127.0.0.1:8080/vendor.js:30661:19) [<root>]
at CompileMetadataResolver.getNonNormalizedDirectiveMetadata (http://127.0.0.1:8080/vendor.js:41563:13) [<root>]
at CompileMetadataResolver._getEntryComponentMetadata (http://127.0.0.1:8080/vendor.js:42265:45) [<root>]
at http://127.0.0.1:8080/vendor.js:42251:48 [<root>]
at Array.forEach (native) [<root>]
at CompileMetadataResolver._getEntryComponentsFromProvider (http://127.0.0.1:8080/vendor.js:42250:30) [<root>]
at http://127.0.0.1:8080/vendor.js:42214:83 [<root>]
at Array.forEach (native) [<root>]
at CompileMetadataResolver._getProvidersMetadata (http://127.0.0.1:8080/vendor.js:42178:19) [<root>]
at http://127.0.0.1:8080/vendor.js:42180:23 [<root>]
at Array.forEach (native) [<root>]
at CompileMetadataResolver._getProvidersMetadata (http://127.0.0.1:8080/vendor.js:42178:19) [<root>]
at http://127.0.0.1:8080/vendor.js:41753:63 [<root>]
at Array.forEach (native) [<root>]
似乎很多人都面临这个问题，但他们的解决方案对我有用。任何想法我哪里出错了？
答案 0 :(得分：3)
要修复“未捕获错误：预期'样式'为字符串数组”，您需要使用样式而不是StyleUrls，因为StyleUrls需要简单的CSS文本。试试这样的
styles: [require('./dashboard.component.css').toString()]
在插件下，您需要根据最新版本的角度更改配置。请参阅以下代码。
plugins: [
new webpack.ContextReplacementPlugin(
// The (\\|\/) piece accounts for path separators in *nix and Windows
/angular(\\|\/)core(\\|\/)@angular/,
helpers.root('./src'), // location of your src
{} // a map of your routes
),
new webpack.LoaderOptionsPlugin({
options : {
htmlLoader : {
minimize : false
}
}
})
]