I am getting this error when I try use a module which have custom components using angular-element
.
I try to use that module in my app as CoreModule.forRoot()
. It have exported components and these same components are listed as entry component and custom component.
When I drilled down to the code, I found that the generated javascript line below is causing the error.
customElements.define('cfheader', Object(_angular_elements__WEBPACK_IMPORTED_MODULE_12__["createCustomElement"])(HeaderComponent, { injector: injector }));
...
Same line in source code in angular
customElements.define('cf-header', createCustomElement(HeaderComponent, {injector}));
...
Error message:
DOMException: Failed to execute 'define' on 'CustomElementRegistry': "cfheader" is not a valid custom element name
at new CoreModule (http://localhost:4200/vendor.js:68177:24)
at _createClass (http://localhost:4200/vendor.js:43333:20)
at _createProviderInstance$1 (http://localhost:4200/vendor.js:43303:26)
at initNgModule (http://localhost:4200/vendor.js:43239:32)
at new NgModuleRef_ (http://localhost:4200/vendor.js:43962:9)
at createNgModuleRef (http://localhost:4200/vendor.js:43951:12)
at Object.debugCreateNgModuleRef [as createNgModuleRef] (http://localhost:4200/vendor.js:45776:12)
at NgModuleFactory_.push../node_modules/@angular/core/fesm5/core.js.NgModuleFactory_.create (http://localhost:4200/vendor.js:46478:25)
at http://localhost:4200/vendor.js:39376:43
at ZoneDelegate.push../node_modules/zone.js/dist/zone.js.ZoneDelegate.invoke (http://localhost:4200/polyfills.js:2704:26)