The function in Angular 5/Typescript disappears when attempting to call it from within another function

After importing D3 into my component, I encounter an issue when trying to assign a layout to the D3.layout property. Strangely, although the layout property is present in the console output of my D3 object, it seems to be unknown when I attempt to call it. What could be causing this discrepancy?

import { adjacencyMatrixLayout } from './lib/d3-adjacency-matrix-layout';
import * as d3Lib from 'd3';

export class AdjacencyComponent implements OnInit {
  public adjacencyData: any;
  private _d3 = d3Lib;

  constructor(private _dataService: DataService) {
    console.log(this._d3); // <--- layout is there, I can see it in the console
    this._d3.layout; // <---- Property 'layout' does not exist on type 'typeof ?? WHY? 
  }
}

Answer №2

In case others are facing a similar issue, the fix is to set d3Lib within the constructor function.

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