error coming in index.d.ts

I am trying to compile my angular application and getting these three errors. This error suddenly started coming, I didnt upgrade or downgrade anything in angular. below errors are coming in

index.d.ts and lib.2015.iterable.d.ts file

Duplicate identifier 'IteratorResult

Import declaration conflicts with local declaration of 'PluginConfig'

Import declaration conflicts with local declaration of 'ProtractorPlugin'

after seeing this(TypeScript: Duplicate identifier 'IteratorResult') post, I tried to upgrade @types/node using the command

npm install --save-dev @types/node

upgrading @types/node did not resolve my issue. I am still getting below error and other errors

Duplicate identifier 'IteratorResult error

Below is my tsconfig.json file:

{

"compileOnSave": false,

"compilerOptions": {

//"outDir": "./dist/out-tsc",

"outDir": "../Bundles",

"skipLibCheck": true,

"sourceMap": true,

"declaration": false,

"moduleResolution": "node",

"emitDecoratorMetadata": true,

"experimentalDecorators": true,

"target": "es5",

"typeRoots": [

"node_modules/@types"

"lib": [

"es2017",

"dom"

]

"angularCompilerOptions": {

"fullTemplateTypeCheck": true,

"strictInjectionParameters": true

}

Below is my package.json file

{

"name": "frontend",

"version": "0.0.0",

"license": "MIT",

"scripts": {

"ng": "ng",

"start": "ng serve",

"build": "ng build --prod",

"test": "ng test",

"lint": "ng lint",

"e2e": "ng e2e"

"private": true,

"dependencies": {

"@angular/animations": "^5.2.4",

"@angular/cdk": "^5.2.1",

"@angular/common": "^5.2.0",

"@angular/compiler": "^5.2.0",

"@angular/core": "^5.2.0",

"@angular/flex-layout": "^5.0.0-beta.14",

"@angular/forms": "^5.2.0",

"@angular/http": "^5.2.0",

"@angular/material": "^5.2.1",

"@angular/platform-browser": "^5.2.0",

"@angular/platform-browser-dynamic": "^5.2.0",

"@angular/router": "^5.2.0",

"ajv": "^6.0.0",

"angular2-text-mask": "^9.0.0",

"angular5-time-picker": "^1.0.8",

"bootstrap": "4.3.1",

"core-js": "^2.4.1",

"font-awesome": "^4.7.0",

"jquery": "^1.9.1",

"ngx-mask": "^2.9.6",

"popper.js": "^1.12.9",

"rxjs": "^5.5.6",

"text-mask-addons": "^3.7.2",

"zone.js": "^0.8.19"

"devDependencies": {

"@angular/cli": "1.6.7",

"@angular/compiler-cli": "^5.2.0",

"@angular/language-service": "^5.2.0",

"@types/jasmine": "~2.8.3",

"@types/jasminewd2": "~2.0.2",

"@types/node": "^14.14.40",

"codelyzer": "^4.0.1",

"jasmine-core": "~2.8.0",

"jasmine-spec-reporter": "~4.2.1",

"karma": "^2.0.4",

"karma-chrome-launcher": "~2.2.0",

"karma-coverage-istanbul-reporter": "^1.2.1",

"karma-jasmine": "~1.1.0",

"karma-jasmine-html-reporter": "^0.2.2",

"protractor": "^5.3.2",

"ts-node": "~4.1.0",

"tslint": "~5.9.1",

"typescript": "~2.5.3"

}

any help will be greatly appreciated.

3 Replies

Know the answer? Post it — somebody with the same question will find it here.

Pranam Bhat5y ago
Follow these steps:

1) Remove your node_modules folder from your project path.

2) Run npm install --save-dev @types/node@latest

3) Run npm install --save-dev @types/node

4) Run npm update --save-dev @types/node

5) Run ng serve
0
Murali Krishnan5y ago
Hi ,if you can post the file then its easy for us to debug and confirm. i am seeing you are copy paste the package.json from some where. try to create new project first using ng new projectname. then do your code
0
Salman Beg5y ago
Check this link which contains few solutions and try it, https://stackoverflow.com/questions/57331779/typescript-duplicate-identifier-iteratorresult
0