When Ionic build with AOT, the relation between entities will not be recognized.

[JeongJun-Lee]

When Ionic build with option like --prod or --aot, it'll pass AOT process. But when App is started, it emits not defined reference error at 31 lines like below.

[Versions]
Angular: 5.2.11
ionic-angular: 3.9.2
ionic/app-script: 3.1.9
typeorm: 0.2.7

[Entity: categories.ts]
`
@entity("Categories")
@Index("fk_Categories_Categories1_idx",["Categories_id",])
export class Categories {

@PrimaryGeneratedColumn({
    name:"id"
    })
id:number;
    

@Column("varchar",{ 
    nullable:false,
    length:45,
    name:"name"
    })
name:string;
    

@Column("boolean",{ 
    nullable:true,
    name:"isInactive"
    })
isInactive:boolean;

31: @manytoone(type=>Categories, Categories_id=>Categories_id.subCategories)
@joincolumn({ name:'Categories_id'})
Categories_id:Categories;

@OneToMany(type=>Categories, categories=>categories.Categories_id)
subCategories:Categories[];



@OneToMany(type=>Products, products=>products.Categories_id)
products:Products[];

}
`

[Error]
ore.js:1449 ERROR Error: Uncaught (in promise): ReferenceError: Categories_1 is not defined
ReferenceError: Categories_1 is not defined
at Object.ɵ0 [as type] (categories.ts:31)
at new RelationMetadata (RelationMetadata.js:138)
at EntityMetadataBuilder.js:338
at Array.map ()
at EntityMetadataBuilder.computeEntityMetadataStep1 (EntityMetadataBuilder.js:334)
at EntityMetadataBuilder.js:68
at Array.forEach ()
at EntityMetadataBuilder.build (EntityMetadataBuilder.js:68)
at ConnectionMetadataBuilder.buildEntityMetadatas (ConnectionMetadataBuilder.js:56)
at Connection.buildMetadatas (Connection.js:509)
at Object.ɵ0 [as type] (categories.ts:31)
at new RelationMetadata (RelationMetadata.js:138)
at EntityMetadataBuilder.js:338
at Array.map ()
at EntityMetadataBuilder.computeEntityMetadataStep1 (EntityMetadataBuilder.js:334)
at EntityMetadataBuilder.js:68
at Array.forEach ()
at EntityMetadataBuilder.build (EntityMetadataBuilder.js:68)
at ConnectionMetadataBuilder.buildEntityMetadatas (ConnectionMetadataBuilder.js:56)
at Connection.buildMetadatas (Connection.js:509)
at c (polyfills.js:3)
at polyfills.js:3
at polyfills.js:3
at t.invoke (polyfills.js:3)
at Object.onInvoke (core.js:4760)
at t.invoke (polyfills.js:3)
at r.run (polyfills.js:3)
at polyfills.js:3
at t.invokeTask (polyfills.js:3)
at Object.onInvokeTask (core.js:4751)