error coming in index.d.ts

Question

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.