Map Example (Angular 17 and 18)

1. Create Angular app with ng new leaflet-angular-example
2. Install Leaflet with npm install leaflet
3. Install typings for Leaflet with npm install --save-dev @types/leaflet
4. Create a component with ng g component map-simple
5. Update app.component.html

<main>
  <router-outlet></router-outlet>  
</main>

6. Update app.routes.ts

import { Routes } from '@angular/router';
import { MapSimpleComponent } from './map/map-simple.component';

export const routes: Routes = [
    { path: 'map-simple', component: MapSimpleComponent },
    { path: '**', redirectTo: '/map', pathMatch: 'full' },
];

7. Update styles.scss

body {
    height: 100vh;
    width: 100wh;
    margin: 0;
}

8. Update angular.json by adding node_modules/leaflet/dist/leaflet.css to styles

{
  "$schema": "./node_modules/@angular/cli/lib/config/schema.json",
  "version": 1,
  "newProjectRoot": "projects",
  "projects": {
    "leaflet-angular-example": {
      // ...
      "architect": {
        "build": {
          "builder": "@angular-devkit/build-angular:application",
          "options": {
            // ...
            "styles": [
              "src/styles.scss",
              "node_modules/leaflet/dist/leaflet.css"  // <-- add this line
            ],
            // ...

9. Update map-simple.component.ts

import { AfterViewInit, Component, ElementRef, ViewChild } from '@angular/core';
import { Map, map, tileLayer } from 'leaflet';

@Component({
  selector: 'app-map-simple',
  standalone: true,
  imports: [],
  template: '<div id="map" #map></div>',
  styles: `
    #map {
        height: 100vh;
        width: 100vw;
    }
  `
})
export class MapSimpleComponent implements AfterViewInit {

  @ViewChild('map')
  mapElementRef: ElementRef = null!;

  public map: Map = null!;

  ngAfterViewInit(): void {

    this.map = map(this.mapElementRef.nativeElement)
        .setView([46.801111, 8.226667], 8);

    tileLayer('https://tile.openstreetmap.org/{z}/{x}/{y}.png', {
        maxZoom: 19,
        // add a link to OpenStreetMap (omitted here for shorter line width)
        attribution: '&copy; OpenStreetMap'
    }).addTo(this.map);

  }

}