ERROR in node_modules/export-from-json/dist/types/index.d.ts(2,13): error TS1005: '=' expected - npm

Question

I'm using angular version 6. After cloning the repo I did npm i. After that I did npm run start and facing this issue as shown below
Here is my package.json file
{
"name": "somaf",
"version": "0.0.0",
"scripts": {
"ng": "ng",
"start": "ng serve --proxy-config proxy.config.json --port=4300 --disable-host-check",
"build": "ng build --prod",
"test": "ng test",
"lint": "ng lint",
"e2e": "ng e2e"
},
"private": true,
"dependencies": {
"#angular/animations": "^6.1.0",
"#angular/cdk": "^6.2.0",
"#angular/common": "^6.1.0",
"#angular/compiler": "^6.1.0",
"#angular/core": "^6.1.0",
"#angular/forms": "^6.1.0",
"#angular/http": "^6.1.0",
"#angular/material": "^6.4.7",
"#angular/platform-browser": "^6.1.0",
"#angular/platform-browser-dynamic": "^6.1.0",
"#angular/router": "^6.1.0",
"ang-jsoneditor": "^1.10.4",
"angular-user-idle": "^2.2.7",
"angular2-promise-buttons": "^3.0.0",
"core-js": "^2.5.4",
"export-from-json": "^1.4.1",
"json-formatter-js": "^2.3.4",
"jsoneditor": "^9.7.4",
"rxjs": "6.2.0",
"zone.js": "~0.8.26"
},
"devDependencies": {
"#angular-devkit/build-angular": "~0.8.0",
"#angular/cli": "~6.2.9",
"#angular/compiler-cli": "^6.1.0",
"#angular/language-service": "^6.1.0",
"#types/jasmine": "~2.8.8",
"#types/jasminewd2": "~2.0.3",
"#types/node": "~8.9.4",
"codelyzer": "~4.3.0",
"jasmine-core": "~2.99.1",
"jasmine-spec-reporter": "~4.2.1",
"karma": "^6.3.19",
"karma-chrome-launcher": "~2.2.0",
"karma-coverage-istanbul-reporter": "~2.0.1",
"karma-jasmine": "~1.1.2",
"karma-jasmine-html-reporter": "^0.2.2",
"node-sass": "^4.14.1",
"protractor": "^7.0.0",
"ts-node": "~7.0.0",
"tslint": "~5.11.0",
"typescript": "^2.9.2",
"webpack": "^4.16.4"
}
}
I have tried updating the typescript version by removing '~' and adding '^' also updated the rxjs version by removing the '~' but did not work for me.