NAD83 to WGS84 - JavaScript NodeJs

nad83-to-wgs84.js

// - https://www.getbounds.com/blog/rtk-to-wgs84/
//
// Output:
// nad83: https://www.google.com/maps?q=36.2929067,-97.308243
// wgs84: https://www.google.com/maps?q=36.29291304405147,-97.30825093744994

import proj4 from 'proj4';

// The transformation in this example (known as the ITRF00 transformation) came from ArcGIS Desktop 10.7
function coordRTKtoWGS84(point) {
    const nad83ITRF00 = "+proj=longLat +ellps=GRS80 +towgs84=-0.9956,1.9013,0.5215,0.025915,0.009246,0.011599,-0.00062 +units=degrees +no_defs";
    const nad83NoTransform = "+proj=longLat +ellps=GRS80 +towgs84=0,0,0 +units=degrees +no_defs";
    var pointInNAD83 = proj4(nad83NoTransform, point);
    return proj4(nad83ITRF00, 'WGS84', pointInNAD83)
}

try {

    const latitude = 36.2929067;
    const longitude = -97.308243;
    const nad83Point = [longitude, latitude];

    // How fast is it?
    // Pretty fast without console.logs
    const countRepeat = 1;
    for (let i = 0; i < countRepeat; i++) {
        var wgs84 = coordRTKtoWGS84(nad83Point);

        console.log(i);
        console.log(`nad83: `, nad83Point);
        console.log(`wgs84: `, wgs84);

        const urlNad83 = pointToGooleMapsUrl(nad83Point);;
        console.log(`urlNad83: `, urlNad83);

        const urlWgs84 = pointToGooleMapsUrl(wgs84);;
        console.log(`urlWgs84: `, urlWgs84);
    }

} catch (error) {
    console.log('Exception:', error);
}