Ionic 3 "rxjs" issue with Typescript and "packages.json" file

Question

I'm running an Ionic 3 project and I got the series of errors bellow after running ionic serve -l on command terminal:

Erros in picture:

Full errors text:

Typescript Error ';' expected. C:/crepedelivery/node_modules/rxjs/internal/types.d.ts } export declare type ObservedValueOf = O extends ObservableInput ? T : never; export declare type ObservedValuesFromArray = X extends Array> ? T : never; Typescript Error ';' expected. C:/crepedelivery/node_modules/rxjs/internal/types.d.ts } export declare type ObservedValueOf = O extends ObservableInput ? T : never; export declare type ObservedValuesFromArray = X extends Array> ? T : never; Typescript Error Expression expected. C:/crepedelivery/node_modules/rxjs/internal/types.d.ts } export declare type ObservedValueOf = O extends ObservableInput ? T : never; export declare type ObservedValuesFromArray = X extends Array> ? T : never; Typescript Error ';' expected. C:/crepedelivery/node_modules/rxjs/internal/types.d.ts export declare type ObservedValueOf = O extends ObservableInput ? T : never; export declare type ObservedValuesFromArray = X extends Array> ? T : never; Typescript Error ';' expected. C:/crepedelivery/node_modules/rxjs/internal/types.d.ts export declare type ObservedValueOf = O extends ObservableInput ? T : never; export declare type ObservedValuesFromArray = X extends Array> ? T : never; Typescript Error Expression expected. C:/crepedelivery/node_modules/rxjs/internal/types.d.ts export declare type ObservedValueOf = O extends ObservableInput ? T : never; export declare type ObservedValuesFromArray = X extends Array> ? T : never; Typescript Error 'ObservableInput' only refers to a type, but is being used as a value here. C:/crepedelivery/node_modules/rxjs/internal/types.d.ts } export declare type ObservedValueOf = O extends ObservableInput ? T : never; export declare type ObservedValuesFromArray = X extends Array> ? T : never; Typescript Error Cannot find name 'infer'. C:/crepedelivery/node_modules/rxjs/internal/types.d.ts } export declare type ObservedValueOf = O extends ObservableInput ? T : never; export declare type ObservedValuesFromArray = X extends Array> ? T : never; Typescript Error Cannot find name 'T'. C:/crepedelivery/node_modules/rxjs/internal/types.d.ts } export declare type ObservedValueOf = O extends ObservableInput ? T : never; export declare type ObservedValuesFromArray = X extends Array> ? T : never; Typescript Error Cannot find name 'T'. C:/crepedelivery/node_modules/rxjs/internal/types.d.ts } export declare type ObservedValueOf = O extends ObservableInput ? T : never; export declare type ObservedValuesFromArray = X extends Array> ? T : never; Typescript Error 'never' only refers to a type, but is being used as a value here. C:/crepedelivery/node_modules/rxjs/internal/types.d.ts } export declare type ObservedValueOf = O extends ObservableInput ? T : never; export declare type ObservedValuesFromArray = X extends Array> ? T : never; Typescript Error 'ObservableInput' only refers to a type, but is being used as a value here. C:/crepedelivery/node_modules/rxjs/internal/types.d.ts export declare type ObservedValueOf = O extends ObservableInput ? T : never; export declare type ObservedValuesFromArray = X extends Array> ? T : never; Typescript Error Cannot find name 'infer'. C:/crepedelivery/node_modules/rxjs/internal/types.d.ts export declare type ObservedValueOf = O extends ObservableInput ? T : never; export declare type ObservedValuesFromArray = X extends Array> ? T : never; Typescript Error Cannot find name 'T'. C:/crepedelivery/node_modules/rxjs/internal/types.d.ts export declare type ObservedValueOf = O extends ObservableInput ? T : never; export declare type ObservedValuesFromArray = X extends Array> ? T : never; Typescript Error Cannot find name 'T'. C:/crepedelivery/node_modules/rxjs/internal/types.d.ts export declare type ObservedValueOf = O extends ObservableInput ? T : never; export declare type ObservedValuesFromArray = X extends Array> ? T : never; Typescript Error 'never' only refers to a type, but is being used as a value here. C:/crepedelivery/node_modules/rxjs/internal/types.d.ts export declare type ObservedValueOf = O extends ObservableInput ? T : never; export declare type ObservedValuesFromArray = X extends Array> ? T : never;

Would should I do? That was after an rxjs update I ran.

Answer 1

Strange, but in our case we were on RXJS 6.0.0 but found this line added

import {parseJson} from "@angular/cli/utilities/json-file";

and that was the source of the problem. After removing the line, everything was OK

Answer 2

I got a solution, running the command:

npm install rxjs@6.0.0 --save