Please use the following settings for esLint:

.eslintrc

module.exports = {  …  extends: [    'eslint:recommended',  ],  overrides: [    {      …      extends: [        'plugin:@typescript-eslint/recommended-type-checked'      ],    },  ],  rules: {    eqeqeq: 2  } };

Type Declarations

We always use explicit type declarations.

private readonly counter: number = 0;

Constructors

We use constructors with explicit field initialization.

The following code segment shows how we use constructors:

export class A {
  data: string;
} 
export class B extends A {
  constructor(data: string){
    this.data = data; // explicit initialization
  }
}

The following code segment shows how not to do it:

export class A {
  data: string;
} 
export class B extends A {
  constructor(readonly data: string){ // implicit initializaion
    …
  }
}

Fields

Fields are private and readonly if possible.

export class A {
  private readonly data: string;
  private isTrue: boolean = true;
  constructor(data: string){
    this.data = data;
  }
}