Recently, I completed the upgrade of my project from Angular 4 to Angular 6. However, upon doing so, I encountered a compiler error in Visual Studio related to my Component declarations. Specifically, the basic declaration below is being highlighted in red:
@Component({
template: ''
})
Hovering over it reveals the error message:
Argument of type '{ template: string }' is not assignable to parameter of type 'Component'. Property 'true' is missing in type '{ template: string }'
Interestingly, this issue persists regardless of how complex the declaration may be, whether it involves a selector, template URL, or styles - the error remains unchanged.
It's worth noting that despite this error showing up in the editor, it doesn't impact the compilation or functionality of the application. It seems like a TypeScript configuration problem arising from the transition between Angular 4 and Angular 6. Strangely, the same error does not manifest when opening the Angular 4 project in Visual Studio.
For your reference, here are the tools and versions I'm using: Visual Studio 2015, Angular CLI (6.2.3), TypeScript 2.8.3, and TsLint 5.11.0.
Below is the tsconfig configuration for the project:
{
"compileOnSave": false,
"compilerOptions": {
"outDir": "./dist/out-tsc",
"baseUrl": "src",
"sourceMap": true,
"declaration": false,
"moduleResolution": "node",
"emitDecoratorMetadata": true,
"experimentalDecorators": true,
"preserveWhitespaces": "off",
"strictPropertyInitialization": false,
"target": "es5",
"typeRoots": [
"node_modules/@types"
],
"lib": [
"es2016",
"dom"
]
}
}
I would greatly appreciate any assistance or insights on resolving this issue.
Thanks, John