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Fit to the bounds of a LineString

Get the bounds of a LineString.

<!DOCTYPE html>
<html lang="en">
<head>
    <title>Fit to the bounds of a LineString</title>
    <meta property="og:description" content="Get the bounds of a LineString." />
    <meta charset='utf-8'>
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <link rel="stylesheet" href="https://unpkg.com/[email protected]/dist/trackasia-gl.css" />
    <script src="https://unpkg.com/[email protected]/dist/trackasia-gl.js"></script>
    <style>
        body { margin: 0; padding: 0; }
        html, body, #map { height: 100%; }
    </style>
</head>
<body>
    <style>
    .btn-control {
        font: bold 12px/20px 'Helvetica Neue', Arial, Helvetica, sans-serif;
        background-color: #3386c0;
        color: #fff;
        position: absolute;
        top: 20px;
        left: 50%;
        z-index: 1;
        border: none;
        width: 200px;
        margin-left: -100px;
        display: block;
        cursor: pointer;
        padding: 10px 20px;
        border-radius: 3px;
    }

    .btn-control:hover {
        background-color: #4ea0da;
    }
</style>
<div id="map"></div>
<button id="zoomto" class="btn-control">Zoom to bounds</button>

<script>
    // A GeoJSON object with a LineString route from the White House to Capitol Hill
    const geojson = {
        'type': 'FeatureCollection',
        'features': [
            {
                'type': 'Feature',
                'geometry': {
                    'type': 'LineString',
                    'properties': {},
                    'coordinates': [[106.6366048812866,10.79873175227713],[106.63364372253417,10.79876515143842],[106.63364372253417,10.79549195896866],[106.62982425689697,10.79549195896866],[106.6240092277527,10.79387200688839],[106.61519012451171,10.791416957534205],[106.61521158218382,10.792068305429156],[106.60813055038452,10.792051604275686],[106.60832366943357,10.79143365883688],[106.60818419456481,10.79082405874451],[106.60815200805663,10.78989712255097]]
                }
            }
        ]
    };

    const map = new trackasiagl.Map({
        container: 'map',
        style: 'https://maps.track-asia.com/styles/v1/streets.json?key=public_key',
        center: {"lat":10.762622,"lng":106.660172},
        zoom: 12
    });

    map.on('load', () => {
        map.addSource('LineString', {
            'type': 'geojson',
            'data': geojson
        });
        map.addLayer({
            'id': 'LineString',
            'type': 'line',
            'source': 'LineString',
            'layout': {
                'line-join': 'round',
                'line-cap': 'round'
            },
            'paint': {
                'line-color': '#BF93E4',
                'line-width': 5
            }
        });

        document
            .getElementById('zoomto')
            .addEventListener('click', () => {
                // Geographic coordinates of the LineString
                const coordinates = geojson.features[0].geometry.coordinates;

                // Pass the first coordinates in the LineString to `lngLatBounds` &
                // wrap each coordinate pair in `extend` to include them in the bounds
                // result. A variation of this technique could be applied to zooming
                // to the bounds of multiple Points or Polygon geometries - it just
                // requires wrapping all the coordinates with the extend method.
                const bounds = coordinates.reduce((bounds, coord) => {
                    return bounds.extend(coord);
                }, new trackasiagl.LngLatBounds(coordinates[0], coordinates[0]));

                map.fitBounds(bounds, {
                    padding: 20
                });
            });
    });
</script>

</body>
</html>