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I am having this issue while ng build --prod. it works fine ng build but give issue in ng build --prod

ERROR in Expected 'styles' to be an array of strings.

ERROR in ./src/main.ts
Module not found: Error: Can't resolve './$$_gendir/app/app.module.ngfactory' in 'D:\Projects\simplifyng2\src'
@ ./src/main.ts 5:0-74
@ multi ./src/main.ts
Niraj Sazzie
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Yadjosan
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1 Answers1

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Based on the error message, I can assume that you forgot to use square brackets in the styles property either in .angular-cli.json or in one of your components.

When you run ng build --prod, it performs AOT by default. As per my experience, AOT compiler catches more errors than JiT. Try this experiment - turn off the AoT during the prod build:

ng build -prod -aot=false

Most likely you won't see any errors.

Yakov Fain
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