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Cover image for Building a Map Application with MapLibre GL JS and Svelte
MapLibre User Group Japan profile image Yasunori Kirimoto
Yasunori Kirimoto for MapLibre User Group Japan

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Building a Map Application with MapLibre GL JS and Svelte

#maplibre #svelte #gis #foss4g

img

I built a development environment combining MapLibre GL JS and Svelte 🎉

The created environment is available on GitHub. Please use it!

GitHub logo mug-jp / maplibregljs-svelte-starter

Start MapLibre GL JS and Svelte easily. [MapLibre GL JS, Svelte, Vite]

maplibregljs-svelte-starter

README02

Start MapLibre GL JS and Svelte easily.


blog

Building a Map Application with MapLibre GL JS and Svelte


Usage

README03


Install package

npm install
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code format

npm run format
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build

npm run build
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dev

npm run dev
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Unit Tests

npm run test:unit
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Lint

npm run lint
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README01


License

MIT

Copyright (c) 2023 MapLibre User Group Japan



Japanese


MapLibre GL JS & Svelte スターター

README02

MapLibre GL JSとSvelteを手軽に始める


blog

MapLibre GL JSとSvelteを組み合わせた開発環境を構築してみた


使用方法

README03


パッケージインストール

npm install
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コードフォーマット

npm run format
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ビルド

npm run build
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開発

npm run dev
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Unitテスト

npm run test:unit
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リント

npm run lint
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README01


ライセンス

MIT

Copyright (c) 2023 MapLibre User Group Japan



View on GitHub


Advance Preparation

  • Creating a Svelte project

Svelte #001 – environment setup with create-svelte

img

Execution environment

  • node v20.6.1
  • npm v9.8.1

Install MapLibre GL JS

Install MapLibre GL JS into your Svelte project.



npm install maplibre-gl
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img

Building the map application

Finally, let's build the actual map application. Change or delete some files from the template.

Overall composition
img

package.json 



{
    "name": "maplibregljs-svelte-starter",
    "version": "1.0.0",
    "scripts": {
        "dev": "vite dev",
        "build": "vite build",
        "preview": "vite preview",
        "test": "npm run test:integration && npm run test:unit",
        "check": "svelte-kit sync && svelte-check --tsconfig ./tsconfig.json",
        "check:watch": "svelte-kit sync && svelte-check --tsconfig ./tsconfig.json --watch",
        "lint": "prettier --plugin-search-dir . --check . && eslint .",
        "format": "prettier --plugin-search-dir . --write .",
        "test:integration": "playwright test",
        "test:unit": "vitest"
    },
    "keywords": [],
    "author": "MapLibre User Group Japan",
    "license": "ISC",
    "devDependencies": {
        "@fontsource/fira-mono": "^4.5.10",
        "@neoconfetti/svelte": "^1.0.0",
        "@playwright/test": "^1.28.1",
        "@sveltejs/adapter-auto": "^2.0.0",
        "@sveltejs/kit": "^1.20.4",
        "@types/cookie": "^0.5.1",
        "@typescript-eslint/eslint-plugin": "^6.0.0",
        "@typescript-eslint/parser": "^6.0.0",
        "eslint": "^8.28.0",
        "eslint-config-prettier": "^8.5.0",
        "eslint-plugin-svelte": "^2.30.0",
        "prettier": "^2.8.0",
        "prettier-plugin-svelte": "^2.10.1",
        "svelte": "^4.0.5",
        "svelte-check": "^3.4.3",
        "tslib": "^2.4.1",
        "typescript": "^5.0.0",
        "vite": "^4.4.2",
        "vitest": "^0.32.2"
    },
    "type": "module",
    "dependencies": {
        "maplibre-gl": "^3.3.1"
    }
}
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/src/routes

+layout.svelte

Delete the existing page and leave the slot tag.



<script lang="ts">
    import './styles.css';
</script>

<slot />

<style></style>
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/src/routes

+page.svelte

Change to load the map component.



<script lang="ts">
    import Map from '$lib/components/MapPane.svelte';
</script>

<svelte:head>
    <title>MapLibre GL JS & Svelte Starter</title>
    <meta name="description" content="MapLibre GL JS & Svelte Starter" />
</svelte:head>

<Map />

<style></style>
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/src/lib/components

MapPane.svelte

Create a new MapLibre GL JS map component.



<script setup lang="ts">
    import 'maplibre-gl/dist/maplibre-gl.css';
    import { Map, NavigationControl } from 'maplibre-gl';
    import { onMount } from 'svelte';

    onMount(() => {
        const map = new Map({
            container: 'map',
            style: {
                version: 8,
                sources: {
                    MIERUNEMAP: {
                        type: 'raster',
                        tiles: ['https://tile.mierune.co.jp/mierune_mono/{z}/{x}/{y}.png'],
                        tileSize: 256,
                        attribution:
                            "Maptiles by <a href='http://mierune.co.jp/' target='_blank'>MIERUNE</a>, under CC BY. Data by <a href='http://osm.org/copyright' target='_blank'>OpenStreetMap</a> contributors, under ODbL."
                    }
                },
                layers: [
                    {
                        id: 'MIERUNEMAP',
                        type: 'raster',
                        source: 'MIERUNEMAP',
                        minzoom: 0,
                        maxzoom: 18
                    }
                ]
            },
            center: [139.767, 35.681],
            zoom: 11
        });

        map.addControl(
            new NavigationControl({
                visualizePitch: true
            })
        );
    });
</script>

<div id="map" />

<style>
    #map {
        height: 100vh;
    }
</style>
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Let's check with a simple local server.



npm run dev
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You can display it using a combination of Svelte and MapLibre GL JS!
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References
MapLibre GL JS
Svelte

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