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export 'ɵcoerceToBoolean' (imported as 'ɵcoerceToBoolean') was not found in '@angular/core'

When i tried to update the project from angular 12 to 13,I got this error on the terminal.enter image description here

Nikhil Jose
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1 Answers1

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Probably an issue of mixed versions from upgrade. Remove local version of folder node_modules and remove package-lock.json and reinstall using npm i. If that does not resolve your issue then follow the steps again using upgrade guide: https://update.angular.io/?l=3&v=12.0-13.0

Joosep Parts
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  • I tried removing / renaming `node_modules` first but got the same error. The additional step of removing `package-lock.json` and then running updates ended up upgrading my package.json to version 14 (which is currently prerelease and not what I want!). So then I deleted again, manually set the version to 13.4 and eventually got it working. See also https://stackoverflow.com/questions/65895057/how-to-downgrade-from-angular-11-to-angular-9 – Simon_Weaver Mar 01 '22 at 01:55