/Javascript/AngularJS/Angular property has no initializer and is not definitely assigned in the constructor

Angular property has no initializer and is not definitely assigned in the constructor

Property 'firstName' has no initializer and is not definitely assigned in the constructor

 "angularCompilerOptions": {
    //   ...
    "strictPropertyInitialization": false

    //   ...
  }

Source: stackoverflow.com

Property 'products' has no initializer and is not definitely assigned in the constructor.

//inside tsconfig.json file "angularCompilerOptions": {
    //   ...
    "strictPropertyInitialization": false

    //   ...
  }

Error TS2564: Property 'description' has no initializer and is not definitely assigned in the constructor. in angular class

  id!: number;

got it, it's because typescript 2.7.2 included a strict class checking where all properties should be declared in constructor. So to work around that, just add a bang sign (!) like: name!:string;

Property 'name' has no initializer and is not definitely assigned in the constructor.ts(2564)

"strictPropertyInitialization": false

Source: stackoverflow.com

Property 'form' has no initializer and is not definitely assigned in the constructor.

"strictPropertyInitialization": false

Source: stackoverflow.com

Angular property has no initializer and is not definitely assigned in the constructor

[Solved] Property ‘…’ has no initializer and is not definitely assigned in the constructor

Source: exerror.com

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