現在、エイリアシングを適切に機能させるのに問題があります。私の理解では、Webpackでエイリアシングを適切に機能させるには、以下を行う必要があります。
バージョン
"TypeScript": "2.8.3",
"webpack": "4.16.2",
"webpack-cli": "3.1.0",
"awesome-TypeScript-loader": "5.2.0",
"html-webpack-plugin": "3.2.0",
"source-map-loader": "^0.2.3",
サンプルファイルはこちら
Sample.tsx
import * as React from 'react';
import * as ReactDOM from 'react-dom';
import Footer from '@common/Footer';
export default class Sample{
public static page(): void {
ReactDOM.render(<Footer/>,
document.getElementById('footer')
);
}
}
Webpackでは、awesome-TypeScript-loaderを使用するように構成されています。私が理解しているように、TsConfigPathsPluginを活用して、すべてのエイリアスのtsconfigを調べ、それを解決します。そのため、webpackに到達するまでに、エイリアスはすでに解決されています。ただし、そうではありません。 bundle.jsでは、@ commonやエイリアスが表示されず、変換されていると予想されます。
また、webpack内でエイリアスを直接解決しようとし、エイリアス/ aliasFieldsを解決しようとしました。しかし、まだ運はありません。
webpack.js
const path = require('path');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const webpack = require('webpack');
const fs = require('fs');
const TsConfigPathsPlugin = require('awesome-TypeScript-loader').TsConfigPathsPlugin;
const ROOT_DIR = path.resolve(__dirname, ".","..");
const config = {
context: path.resolve(__dirname, '.',".."),
mode: "development",
resolve: {
modules: [
],
extensions: ['.ts', '.tsx', '.js', '.jsx'],
plugins: [
new TsConfigPathsPlugin({
configFileName: path.resolve(ROOT_DIR,'tsconfig.json')
})
],
aliasFields: ["@entry", "@common"],
alias: {
"@entry": "entry/",
"@common": "common/"
}
},
entry: {
entryPoint: path.resolve(ROOT_DIR,'entry, 'index.tsx')
},
optimization: {
minimize: false, // debugging purpose
runtimeChunk: 'single',
splitChunks: {
cacheGroups: {
vendors: {
test: /[\\/]node_modules[\\/]/,
name: 'vendors',
chunks: 'all'
}
}
}
},
output: {
filename: "[name]_bundle.js",
path: path.join(ROOT_DIR, 'dist_w'),
},
// Enable sourcemaps for debugging webpack's output.
devtool: "eval-source-map",
resolve: {
// Add '.ts' and '.tsx' as resolvable extensions.
extensions: [".ts", ".tsx", ".js", ".json"]
},
module: {
rules: [
// All files with a '.ts' or '.tsx' extension will be handled by 'awesome-TypeScript-loader'.
{ test: /\.(ts|tsx)$/, loader: "awesome-TypeScript-loader" },
// All output '.js' files will have any sourcemaps re-processed by 'source-map-loader'.
{ enforce: "pre", test: /\.js$/, loader: "source-map-loader" }
]
},
plugins: [
//Generate index.html in /dist => https://github.com/ampedandwired/html-webpack-plugin
new HtmlWebpackPlugin({
filename: 'index.html', //Name of file in ./dist/
template: path.resolve(ROOT_DIR,'entry-point', 'index.html'),
hash: true,
})
],
stats: { //object
assets: true,
colors: true,
errors: true,
errorDetails: true,
hash: true
// ...
}
};
module.exports = config;
Webパックから表示されるエラーメッセージは次のとおりです。
Module not found: Error: Can't resolve '@common\Footer' in 'entry\src'
resolve '@common\Footer' in 'entry\src'
Parsed request is a module
using description file: <root>\package.json (relative path: ./entry/)
Field 'browser' doesn't contain a valid alias configuration
resolve as module
entry\node_modules doesn't exist or is not a directory
<root>\..\..\node_modules doesn't exist or is not a directory
<root>\..\node_modules doesn't exist or is not a directory
<root>\node_modules doesn't exist or is not a directory
looking for modules in <root>\node_modules
using description file: <root>\package.json (relative path: ./node_modules)
Field 'browser' doesn't contain a valid alias configuration
looking for modules in entry\node_modules
using description file: <root>\package.json (relative path: ./entry-point/node_modules)
Field 'browser' doesn't contain a valid alias configuration
using description file: <root>\package.json (relative path: ./node_modules/@common//Footer)
no extension
Field 'browser' doesn't contain a valid alias configuration
using description file: <root>\package.json (relative path: ./entry-point/node_modules/@common/Footer)
no extension
Field 'browser' doesn't contain a valid alias configuration
<root>\node_modules\@common\Footer doesn't exist
.ts
…
アドバイスありがとうございます、ありがとう、D
これは私のプロジェクトの1つで使用したもので、tsconfigとwebpack.configの両方で構成する必要がありますが、値は異なります。
// webpack.config
resolve: {
extensions: [".ts", ".js"],
alias: { "@src": path.resolve(__dirname, "src") },
},
// tsconfig
"paths": {
"@src/*": ["./src/*"]
},