npm run build fails

[KishoreKoushik]

I was doing RnD for push notifications. When I do npm run build I am getting below errors

[12:36:30] typescript: node_modules/firebase/index.d.ts, line: 4369
';' expected.

L4368:  gtagName?: string;
L4369:  /** Sets custom name for `dataLayer` array used by gtag. */
L4370:  dataLayerName?: string;

[12:36:30] typescript: node_modules/firebase/index.d.ts, line: 4369
'EventNameString' only refers to a type, but is being used as a value here.

L4368:  gtagName?: string;
L4369:  /** Sets custom name for `dataLayer` array used by gtag. */
L4370:  dataLayerName?: string;

[12:36:30] typescript: node_modules/firebase/index.d.ts, line: 4369
'never' only refers to a type, but is being used as a value here.

L4368:  gtagName?: string;
L4369:  /** Sets custom name for `dataLayer` array used by gtag. */     
L4370:  dataLayerName?: string;

[12:36:30] typescript: node_modules/firebase/index.d.ts, line: 4369
Cannot find name 'T'.

L4368:  gtagName?: string;
L4369:  /** Sets custom name for `dataLayer` array used by gtag. */ 
L4370:  dataLayerName?: string;

To Reproduce
Steps to reproduce the behavior:

1. Create a new ionic 3 project
2. Install below packages

ionic cordova plugin add cordova-plugin-firebase
npm install --save @ionic-native/firebase
npm install --save angularfire2 firebase

3. Run npm run build
4. You get the above error

You can find my code at https://github.com/KishoreKoushik/PushNotification.git

[AhsanSN]

i am facing the same error

[SHROUD1995]

I got this error too. How can i solve this

[cool-projects]

Just install the latest version of typescript.

npm i typescript@latest

[AhsanSN]

Just install the latest version of typescript.

npm i typescript@latest

This worked.

[DiegoPeralta1987]

I am facing the same problem as I can solve this?

[JosephRadebe]

Diego use the command below to update to the latest typescript.

npm i typescript@latest

[RonaldoJB45]

work to me install firebase

npm i firebase@4.6.2