The Angular Compiler requires TypeScript >=2.7.2 and <2.10.0 but 3.0.1 was found instead.

I’m submitting a…

[ ] Regression (a behavior that used to work and stopped working in a new release)
[+] Bug report  
[ ] Performance issue
[ ] Feature request
[ ] Documentation issue or request
[ ] Support request => Please do not submit support request here, instead see https://github.com/angular/angular/blob/master/CONTRIBUTING.md#question
[ ] Other... Please describe:

Current behavior

@angular/compiler-cli@6.1.2 requires typescript@‘>=2.7.2 <2.10’ but 3.0.1 was found instead. Using this version can result in undefined behavior and difficult to debug problems.

Expected behavior

The compiler cli should use a newer version of typescript.

Minimal reproduction of the problem with instructions

Run ng new MyProject cd MyProject npm i --save-dev typescript@latest ng serve --open

What is the motivation/use case for changing the behavior?

The tools should use the current stable versions of other tools and not be making one or more steps back.

Environment

"@angular/cli": "~6.1.3",
"@angular/compiler-cli": "^6.1.2",
"@angular/language-service": "^6.1.2",
"@ngrx/schematics": "^6.1.0",
"@types/jasmine": "~2.8.6",
"@types/jasminewd2": "~2.0.3",
"@types/node": "~10.5.8",
"codelyzer": "~4.4.3",
"jasmine-core": "~3.2.0",
"jasmine-spec-reporter": "~4.2.1",
"karma": "~3.0.0",
"karma-chrome-launcher": "~2.2.0",
"karma-coverage-istanbul-reporter": "~2.0.0",
"karma-jasmine": "~1.1.1",
"karma-jasmine-html-reporter": "^1.2.0",
"protractor": "~5.4.0",
"ts-node": "~7.0.1",
"tslint": "~5.11.0",
"tslint-eslint-rules": "^5.3.1",
"typescript": "~3.0.1"

Angular version: 6.1.2


Browser:
 Build problem
 
For Tooling issues:
- Node version: 8.11.2  
- Platform:  Win 10 (x64) 

[alexeagle]

@angular/compiler-cli support for TypeScript 3 will land in Angular 7

[emircanok]

Hello, I solve this problem like this. npm install typescript@">=2.7.2 <2.10.0" Unfortunately, you must run this command after each npm update.