Typescript version problem while updating Angular 8 to Angular 9

Question

Angular 9 support typescript >=3.6 and <3.8. But while updating angular 8 to 9 the cli is installing ts 3.8 which is not supported by angular 9 itself.

It is solved. It's needed to update with --force flag. Then the typescript version need to be updated manually to any version >=3.6 and <3.6. As for example : npm install --save [email protected] — shafiul2344
– shafiul2344, Commented Mar 25, 2020 at 5:31

JWP · Accepted Answer · 2020-03-25 04:57:45Z

2

Upgrading to version 9 requires very specific actions. The good news is they are all documented here.

https://github.com/angular/angular-cli/issues/17297

Summary

Upgrade to latest version of 8 first. Then to 9. Using the --force option fixes your issue.

edited Mar 25, 2020 at 4:57

answered Mar 25, 2020 at 4:51

JWP

6,9853 gold badges59 silver badges77 bronze badges

Sign up to request clarification or add additional context in comments.

2 Comments

shafiul2344 Over a year ago

I have updated to latest version of angular 8 as per the update steps stated in update documentation. Now using --force

JWP Over a year ago

Ok now go to 9 and use --force option

Collectives™ on Stack Overflow

Typescript version problem while updating Angular 8 to Angular 9

1 Answer 1

2 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

2 Comments

Your Answer

Sign up or log in

Post as a guest

Related