Can't resolve 'core-js/proposals/reflect-metadata' in Angular 13
DanWahlin opened this issue · 2 comments
Versions
8.2.0
Angular CLI: 13.0.2
Node: 14.18.0
Package Manager: npm 6.14.15
OS: darwin x64
Angular: 13.0.1
... animations, common, compiler, compiler-cli, core, forms
... language-service, platform-browser, platform-browser-dynamic
... router
Package Version
---------------------------------------------------------
@angular-devkit/architect 0.1300.2
@angular-devkit/build-angular 13.0.2
@angular-devkit/core 13.0.2
@angular-devkit/schematics 13.0.2
@angular/cli 13.0.2
@schematics/angular 13.0.2
rxjs 6.6.7
typescript 4.4.4
Repro steps
- Clone https://github.com/danwahlin/angular-jumpstart
- npm install
- npm run playground
Observed Behavior
[ng serve]:
Error: Module not found: Error: Can't resolve 'core-js/proposals/reflect-metadata' in '/Users/danwahlin/Dropbox/Projects/GitHub/Angular-JumpStart'
Full output:
Successfully compiled sandbox files.
[ng serve]: - Generating browser application bundles (phase: setup)...
[ng serve]: ✔ Browser application bundle generation complete.
[ng serve]:
Initial Chunk Files | Names | Size
vendor.js | vendor | 3.50 MB
polyfills.js | polyfills | 434.25 kB
styles.css, styles.js | styles | 212.41 kB
runtime.js | runtime | 12.80 kB
main.js | main | 8.43 kB
| Initial Total | 4.16 MB
Lazy Chunk Files | Names | Size
default-src_app_core_core_module_ts-src_app_shared_mocks_ts-src_app_shared_shared_module_ts.js | - | 468.26 kB
default-node_modules_angular_router_fesm2020_testing_mjs.js | - | 26.93 kB
common.js | common | 15.09 kB
default-node_modules_tslib_tslib_es6_js.js | - | 13.70 kB
src_app_customers_customers_component_sandbox_ts.js | - | 12.66 kB
src_app_shared_map_map_component_ts.js | - | 10.38 kB
src_app_customer_customer-details_customer-details_component_sandbox_ts.js | - | 10.11 kB
src_app_customer_customer-orders_customer-orders_component_sandbox_ts.js | - | 7.39 kB
src_app_about_about_component_sandbox_ts.js | - | 4.40 kB
s
[ng serve]: rc_app_customers_customers-card_customers-card_component_sandbox_ts.js | - | 2.81 kB
src_app_customers_customers-grid_customers-grid_component_sandbox_ts.js | - | 2.81 kB
Build at: 2021-11-12T17:03:07.280Z - Hash: d68fa2b8dea5e622 - Time: 11772ms
[ng serve]:
Error: Module not found: Error: Can't resolve 'core-js/proposals/reflect-metadata' in '/Users/danwahlin/Dropbox/Projects/GitHub/Angular-JumpStart'
[ng serve]:
** Angular Live Development Server is listening on 127.0.0.1:4201, open your browser on http://127.0.0.1:4201/ **
[ng serve]:
✖ Failed to compile.
Desired Behavior
Successful build and ability to run Angular Playground
Any other details that may be useful (optional)
I just updated the project to Angular 13 using ng update @angular/cli @angular/core angular-playground.
I tried deleting and reinstalling node_modules just to see if it made a difference but still get the same error. core-js version in the project is 2.5.4.
@DanWahlin I removed 'core-js' from your package.json and references to it in your pollyfills.ts file. I then removed all the node-modules and reinstalled them. I was then able to run playground with no issues. I am not sure if you need 'core-js' for something but it is not in a default angular project.