Error: Duplicate identifier 'export='

[JimLynchCodes]

When I run ng serve or ngbuild I get an error saying, "Duplicate identifier 'export='.", and it's complaining about the node_modules/firebase/firebase.d.ts file:

ERROR in [default] /Users/jim/Git-Projects/Park-Boys-Bootcamp/4-Firebase-Rooms/project/node_modules/firebase/firebase.d.ts:391:2 
Duplicate identifier 'export='.

ERROR in [default] /Users/jim/Git-Projects/Park-Boys-Bootcamp/4-Firebase-Rooms/project/src/typings/modules/firebase/index.d.ts:498:0 
Duplicate identifier 'export='.

in my package.json:

angular: 2.0.1

"angularfire2": "^2.0.0-beta.5",
"core-js": "^2.4.1",
"firebase": "^3.4.0",

Any ideas on how to fix? Anyone else getting this? thanks? :)

[mukesh51]

@JimTheMan are you on the latest version of angular. one of the options you can try is removing the following entry from src/tsconfig.json, which actually is not recommended as per installation guide.

"types": [
"firebase"
]

[JimLynchCodes]

Hi @mukesh51! Thanks, but I already have "types":[
"firebase"
]

in the tsconfig.json file.

I tried with Angular 2.0.0 and 2.0.1

[mukesh51]

Can you show your code with plnkr. also do you want to try removing that entry mentioned above and see how it looks.

[JimLynchCodes]

I'm getting the same error after removing it. It would be hard for me to fit it into a plunkr, but it is an angular cli project. You can see the source code here: https://github.com/ParkBoys/Park-Boys-Bootcamp/tree/master/4-Firebase-Rooms/project

[mukesh51]

@JimTheMan I suspect something to do with your node_modules. Can you try deleting and re-installing your node_modules. Also put this entry back in your src/tsconfig.json. Look at the troubleshooting section of install guide. Also, what output do you see, when you execute the following command "ng -v"

[JimLynchCodes]

@mukesh51 Thanks, but I'm still getting the same error. :'(

I've been deleting and reinstalling node_modules this whole time. I am getting this error now though on npm i:

Then when I try npm serve same error:

ng -v returns this:
angular-cli: 1.0.0-beta.15
node: 5.11.1
os: darwin x64

[mukesh51]

@JimTheMan This was called out here issue 520 and it was resolved by upgrading the angular-cli version, but not necessarily that is the solution.

You can safely remove the firebase entry from types array. See issues 525

@jeffbcross @davideast any thoughts ?

[JimLynchCodes]

That thread doesn't really give me anything else to try. :/

[davideast]

@JimTheMan Are you still having this problem? It should have been fixed in the last release.

[JimLynchCodes]

Hi @davideast !

Sorry, I actually moved my project over to angular cli so I'm not sure. :/

I can try it, but for now I'll close the issue. Thanks.

[AnuragKDwivedi]

hello @davideast !
Im getting the same problem .

And when im trying -->const promise = firebase.auth().createUserWithEmailAndPassword(this.email,this.password)
.then(function(user){
console.log(user)
}).catch(function(error){
console.log(error)
});

im getting firebase is not defined !

[kumaresan-subramani]

Error at D:/hence/angular2-webpack-seed/node_modules/@types/node/index.d.ts:5957:5: Duplicate identifier 'export='.
Error at D:/hence/angular2-webpack-seed/node_modules/@types/requirejs/index.d.ts:38:2: Duplicate identifier 'export='.
Error at D:/hence/angular2-webpack-seed/node_modules/@types/requirejs/index.d.ts:422:13: Subsequent variable declarations must have the same type. Variable 'require' must be of type 'NodeRequire', but here has type 'Require'.
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! angular2-webpack-seed@1.2.0 scripts: ngc -p tsconfig-aot.json
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the angular2-webpack-seed@1.2.0 scripts script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

This is error, how should i resolve it?