useExperimentalClosure leads to error in prod mode

[yupengfei]

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Short description of the problem:

useExperimentalClosure in prod mode leads to

Uncaught Error: Cannot mix multi providers and regular providers, got: [object Object] [object Object]

error in prod mode

What behavior are you expecting?

when use

"build": "ionic-app-scripts build --rollup ./config/rollup.config.js --experimentalPurgeDecorators true --useExperimentalClosure true ",    

everything goes well

but after add --prod, the page went error.

Steps to reproduce:

1. ionic start demo tabs

2. modify the package.json,

"build": "ionic-app-scripts build --rollup ./config/rollup.config.js --experimentalPurgeDecorators true --useExperimentalClosure true --prod",

3. open the browser, and error show in console.

insert any relevant code between the above and below backticks

Which @ionic/app-scripts version are you using?

2.1.4

Other information: (e.g. stacktraces, related issues, suggestions how to fix, stackoverflow links, forum links, etc)

main.js:948 Uncaught Error: Cannot mix multi providers and regular providers, got: [object Object] [object Object]
at Function.b.resolve (main.js:948)
at Function.b.rB (main.js:949)
at main.js:797
at main.js:797
at main.js:1458
at main.js:1458