Cannot get a layer to appear on map

Question

This is my first time using the ArcGIS API for JavaScript. I'm running into a fairly elementary error. I cannot get a layer I have hosted on ArcGIS Online to appear on the map. Here is my code:

require([    "esri/config",    "esri/Map",    "esri/layers/FeatureLayer",    "esri/views/MapView"], function (esriConfig, Map, MapView, FeatureLayer) {
    //Setting the API key    esriConfig.apiKey = api key hidden
    const map = new Map({        basemap: "arcgis-topographic"    });
    const view = new MapView({        container: "viewDiv",        map: map,        extent: {            xmin: -88.4407865369763,            ymin: 44.2519512604157,            xmax: -87.57033074655209,            ymax: 44.58559644055305,            spatialReference: 4326        },    });
    let one_year_high = new FeatureLayer({        url: "https://services.arcgis.com/HRPe58bUyBqyyiCt/ArcGIS/rest/services/1_year_high_lake_level/FeatureServer/13",        id: "1-year-high",        apiKey: api key hidden    });
    map.add(one_year_high);
});

This script produces the following error in my browser:

[esri.Map] #add() The item being added is not a Layer or a Promise that resolves to a Layer.

My layer can be found here: https://services.arcgis.com/HRPe58bUyBqyyiCt/ArcGIS/rest/services/1_year_high_lake_level/FeatureServer/13

I can't figure out why it won't appear.

Thanks in advance.

RRubalcava · Accepted Answer

In your require and function, the MapView and FeatureLayer order are swapped. When using amd, the order matters.