My appeal is, some dependencies in my project have been external, and these dependencies are shared by multiple entries. I want to count the external dependencies used by each entry

With webpack4:

function _getAllDeps(module) {
    const moduleRecord = {};
    const result = {};
    const _find = (module) => {
        if (!module || moduleRecord[module.request]) {
            return false;
        }
        moduleRecord[module.request] = true;
        if (module.dependencies && Array.isArray(module.dependencies)) {
            module.dependencies.forEach((dep) => {
                _find(dep.module);
                
                // all dependencies are there, and I can pick the 'externals' by `module.external`
                if (!(dep.module && dep.module.external)) {
                    return false;
                }
                const { request } = dep.module;
                result[request] = true;
            });
        }
    };
    _find(module);
    return Object.keys(result);
}

compiler.hooks.emit.tapAsync('xxxxx', (compilation, done) => {
    compilation.chunks.forEach((chunk) => {
        const actualDeps = _getAllDeps(chunk.entryModule)

        // Now, I have get all the dependences used by the chunk
        // And I can compare with dependencies in package.json
        // Finally, I will get external dependencies used by each entry
 
    })
})

But in webpack5:

compiler.hooks.emit.tapAsync('DepsJsonWebpackPlugin', (compilation, done) => {
    compilation.chunks.forEach((chunk) => {
        console.log(chunk.name);
        for (const module of compilation.chunkGraph.getChunkModulesIterable(chunk)) {
          console.log(module.request);
        }
    });
    done();
});

All the dependencies specified in externals lost.

So, how can I get all module dependencies of each entry in webpack5, including the ones that are external