How to get dynamic module info in importCall hook on Webpack 4

[yangguansen]

I'm making a webpack plugin in webpack@4.
I have below code in my project,
like const Home = lazy(() => import(/* webpackChunkName: "Home" */'@src/routes/index'));

plugin code is :

    compiler.hooks.compilation.tap(this.pluginName, (compilation, { normalModuleFactory }) => {
      const handler = (parser, options) => {
        parser.hooks.importCall.tap(this.pluginName, (expr) => {
          if (parser.state.current.resource.includes('node_modules')) {
            return;
          }
          if (expr.arguments.length !== 1) {
            throw new Error(
              "Incorrect number of arguments provided to 'import(module: string) -> Promise'."
            );
          }
          const param = parser.evaluateExpression(expr.arguments[0]);
          // I want to get dynamic import module info, such as '@src/routes/index'
        })        
      }

      normalModuleFactory.hooks.parser
        .for("javascript/auto")
        .tap(this.pluginName, handler);
      normalModuleFactory.hooks.parser
        .for("javascript/dynamic")
        .tap(this.pluginName, handler);
      normalModuleFactory.hooks.parser
        .for("javascript/esm")
        .tap(this.pluginName, handler);
    });