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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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