Description

This diagnostic is emitted when an expression used in *ngFor is missing the let keyword.

import {Component} from '@angular/core';

@Component({
  // The `let` keyword is missing in the `*ngFor` expression.
  template: `<div *ngFor="item of items">{{ item }}</div>`,
  // …
})
class MyComponent {
  items = [1, 2, 3];
}

How to resolve the problem

Add the missing let keyword.

import {Component} from '@angular/core';

@Component({
  // The `let` keyword is now present in the `*ngFor` expression,
  // no diagnostic messages are emitted in this case.
  template: `<div *ngFor="let item of items">{{ item }}</div>`,
  // …
})
class MyComponent {
  items = [1, 2, 3];
}