什么“模块{路径} \\ src \\ app \\ sales \\ models \\ index.ts没有静态导出”是​​什么意思，我该如何解决？

Question

We've just added webpack 3.0.0 to our angular 2 project. I had it working, got about a 20-25% performance improvement and a 50% (ish) decrease in size. I then rebased this onto the main branch and started to get the error.

ERROR in chunk main [initial]
[name].bundle.js
Module \src\app\sales\models\index.ts has no static exports true

What does that error actually mean? I haven't been able to find anything useful online. Any tips on fixing it?

The \\src\\app\\sales\\models\\index.ts file hasn't changed since my commit and only contains:

export * from './app-state';
export * from './purchase.model';
export * from './base.model';
export * from './view-state.model';
export * from './address';
export * from './core';
export * from './cover';
export * from './disclaimers';
export * from './family';
export * from './premium';
export * from './payments';
export * from './policy';
export * from './tracking.model';

After undoing my initial rebase I rebased the main on branch on top of my work and then found the commit that "broke" webpack (thank goodness for git bisect ) and I'm in the process of slowly walking the changes back in to see if I can keep it working.

Looking at the webpack source the error is being thrown ConcatenatedModule.js in HarmonyImportSpecifierDependencyConcatenatedTemplate

    if(!Array.isArray(module.providedExports))
        throw new Error(`Module ${module.resource} has no static exports ${module.providedExports}`);

Some poking around has shown that module.providedExports is a boolean with a value of true , hence the error; however, I've not been able to workout what sets that value.

What does the error mean? Other debugging tips?

Answer 1

I have this problem too. I don't know why this error is throws but i have fix it in replace '*' by explicit export.

for example :

before :

export * from './foo';
export * from './bar';

after :

export {Foo1, Foo2, /*...*/} from './foo';
export {Bar1, Bar2, /*...*/} from './bar'