TypeScript學習筆記（三）Webpack
阿新 • • 發佈：2019-01-11
照著教程配完報了個奇怪的錯誤，哪位大神幫忙看一下
1.建立專案：
mkdir proj
cd projmkdir srcmkdir distmkdir componentsnpm init3.安裝依賴ts-loader和source-map-loader。
npm install -g typescript webpacknpm install --save react react-dom @types/react @types/react-dom
5.在根目錄下新增tsconfig.json檔案npm install --save-dev ts-loader source-map-loader npm link typescript
{
"compilerOptions": {
"outDir": "./dist/",
"sourceMap": true,
"noImplicitAny": true,
"module": "commonjs",
"target": "es5",
"jsx": "react"
},
"files": [
"./src/components/Hello.tsx",
"./src/index.tsx"
]
}6.寫程式碼，在src/components目錄下建立名為Hello.tsx的檔案
7.在src下建立index.tsx檔案import * as React from "react"; export interface HelloProps { compiler: string; framework: string; } export class Hello extends React.Component<HelloProps, {}> { render() { return <h1>Hello from {this.props.compiler} and {this.props.framework}!</h1>; } }
import * as React from "react";
import * as ReactDOM from "react-dom";
import { Hello } from "./components/Hello";
ReactDOM.render(
<Hello compiler="TypeScript" framework="React" />,
document.getElementById("example")
);
<!DOCTYPE html> <html> <head> <meta charset="UTF-8" /> <title>Hello React!</title> </head> <body> <div id="example"></div> <!-- Dependencies --> <script src="./node_modules/react/dist/react.js"></script> <script src="./node_modules/react-dom/dist/react-dom.js"></script> <!-- Main --> <script src="./dist/bundle.js"></script> </body> </html>
9.建立webpack配置檔案
1）在工程根目錄建立webpack.config.js
module.exports = {
entry: "./src/index.tsx",
output: {
filename: "bundle.js",
path: __dirname + "/dist"
},
// Enable sourcemaps for debugging webpack's output.
devtool: "source-map",
resolve: {
// Add '.ts' and '.tsx' as resolvable extensions.
extensions: ["", ".webpack.js", ".web.js", ".ts", ".tsx", ".js"]
},
module: {
loaders: [
// All files with a '.ts' or '.tsx' extension will be handled by 'ts-loader'.
{
test: /\.tsx?$/,
loader: "ts-loader"
}
],
preLoaders: [
// All output '.js' files will have any sourcemaps re-processed by 'source-map-loader'.
{
test: /\.js$/,
loader: "source-map-loader"
}
]
},
// When importing a module whose path matches one of the following, just
// assume a corresponding global variable exists and use that instead.
// This is important because it allows us to avoid bundling all of our
// dependencies, which allows browsers to cache those libraries between builds.
externals: {
"react": "React",
"react-dom": "ReactDOM"
},
};2）執行webpack
3）在瀏覽器開啟index.html