Web3.0加密代币应用报错：无法解析./token.did.js文件

开发Web3.0加密代币创建应用时，运行程序出现报错：
Module not found: Error: Can't resolve './token.did.js' in '/home/name/ic-projects/token/src/declarations/token'

使用的导入语句：
import { token } from "../../../declarations/token"

已尝试参考社区内容修改webpack.config.js和tsconfig.json，但问题未解决。

相关文件代码 #

token.did #

service : { balanceOf: (principal) -> (nat) query; }

webpack.config.js #

const path = require("path");
const webpack = require("webpack");
const HtmlWebpackPlugin = require("html-webpack-plugin");
const TerserPlugin = require("terser-webpack-plugin");
const CopyPlugin = require("copy-webpack-plugin");

function initCanisterEnv() {
  let localCanisters, prodCanisters;
  try {
    localCanisters = require(path.resolve(
      ".dfx",
      "local",
      "canister_ids.json"
    ));
  } catch (error) {
    console.log("No local canister_ids.json found. Continuing production");
  }
  try {
    prodCanisters = require(path.resolve("canister_ids.json"));
  } catch (error) {
    console.log("No production canister_ids.json found. Continuing with local");
  }

  const network =
    process.env.DFX_NETWORK ||
    (process.env.NODE_ENV === "production" ? "ic" : "local");

  const canisterConfig = network === "local" ? localCanisters : prodCanisters;

  return Object.entries(canisterConfig).reduce((prev, current) => {
    const [canisterName, canisterDetails] = current;
    prev[canisterName.toUpperCase() + "_CANISTER_ID"] =
      canisterDetails[network];
    return prev;
  }, {});
}
const canisterEnvVariables = initCanisterEnv();

const isDevelopment = process.env.NODE_ENV !== "production";

const frontendDirectory = "token_assets";

const asset_entry = path.join("src", frontendDirectory, "src", "index.html");

module.exports = {
  target: "web",
  mode: isDevelopment ? "development" : "production",
  entry: {
    index: path.join(__dirname, asset_entry).replace(/\.html$/, ".jsx"),
  },
  devtool: isDevelopment ? "source-map" : false,
  optimization: {
    minimize: !isDevelopment,
    minimizer: [new TerserPlugin()],
  },
  resolve: {
    extensions: [".js", ".ts", ".jsx", ".tsx"],
    fallback: {
      assert: require.resolve("assert/"),
      buffer: require.resolve("buffer/"),
      events: require.resolve("events/"),
      stream: require.resolve("stream-browserify/"),
      util: require.resolve("util/"),
    },
  },
  output: {
    filename: "index.js",
    path: path.join(__dirname, "dist", frontendDirectory),
  },
  module: {
   rules: [
     { test: /\.(ts|tsx|jsx)$/, loader: "ts-loader" },
     { test: /\.css$/, use: ['style-loader','css-loader'] }
   ]
  },
  plugins: [
    new HtmlWebpackPlugin({
      template: path.join(__dirname, asset_entry),
      cache: false,
    }),
    new CopyPlugin({
      patterns: [
        {
          from: path.join(__dirname, "src", frontendDirectory, "assets"),
          to: path.join(__dirname, "dist", frontendDirectory),
        },
      ],
    }),
    new webpack.EnvironmentPlugin({
      NODE_ENV: "development",
      ...canisterEnvVariables,
    }),
    new webpack.ProvidePlugin({
      Buffer: [require.resolve("buffer/"), "Buffer"],
      process: require.resolve("process/browser"),
    }),
  ],
  devServer: {
    proxy: {
      "/api": {
        target: "http://localhost:8000",
        changeOrigin: true,
        pathRewrite: {
          "^/api": "/api",
        },
      },
    },
    hot: true,
    watchFiles: [path.resolve(__dirname, "src", frontendDirectory)],
    liveReload: true,
  },
};

tsconfig.json #

{
  "compilerOptions": {
    "target": "es2018",
    "lib": ["ES2018", "DOM"],
    "allowJs": true,
    "jsx": "react",
  },
  "include": ["src/**/*"],
}

这个错误核心是dfx未生成token.did.js声明文件，或是webpack无法识别该文件类型，按以下步骤修复：

1. 重新生成声明文件
   执行命令让dfx重新编译并生成did对应的JS声明文件：

   dfx generate token
   

   执行后检查/home/name/ic-projects/token/src/declarations/token目录，确认是否出现token.did.js和token.did.d.ts文件。

2. 更新webpack的文件扩展名配置
   在webpack.config.js的resolve.extensions中添加.did.js，确保webpack能识别这类文件：

   resolve: {
     extensions: [".js", ".ts", ".jsx", ".tsx", ".did.js"],
     // 保留原有的fallback等配置
   }
   

3. 验证导入路径正确性
   检查前端代码文件的位置，确认../../../declarations/token的相对路径是否准确。也可以配置webpack别名简化导入：

   resolve: {
     // 保留原有的extensions、fallback配置
     alias: {
       "@declarations": path.resolve(__dirname, "src/declarations")
     }
   }
   

   之后导入可改为：

   import { token } from "@declarations/token";
   

4. 清理缓存并重启服务
   删除旧的编译缓存文件，重新部署：

   rm -rf .dfx dist
   dfx start --clean
   dfx deploy
   

内容的提问来源于stack exchange，提问作者ankit