makes-no-sense.js

// BEGIN: This works!
/**
 * Account Institutions Controller.
 * @param {angular.service.$scope} $scope Angular $scope service.
 * @param {angular.service.$http} $http Angular $http service.
 */
    function institutions($scope, $http) {
    console.log('Yaba.app.controller(institution).load()');
    $scope.institutions = [{}];
    $scope.institution = Yaba.models.EMPTY_Institution;
    $http({
        method: 'GET',
        url: '/api/institutions'
    }).then(function(response) {
        $scope.institutions = response.data.institutions;
    });
    $scope.addMapping = function addMapping() {
        $scope.institution.mappings.push({
            fromField: null,
            toField: null,
            mapType: null
        });
    };
}
// END: This works!

// BEGIN: This fails
class Institution {
    constructor(services) {
        services.hasOwnProperty('$http') && ( this.$http = services.$http );
        services.hasOwnProperty('$scope') && ( this.$scope = services.$scope );
    }

    /**
     * Query for an institution, many institutions and get more details in list format.
     * @returns Object<Institution>
     */
    async load() {
        var result = await this.$http({
            method: 'GET',
            url: '/api/institutions'
        });
        this.$scope.institutions = result.data.institutions;
        return result.data.institutions;
    }
}

/**
 * Account Institutions Controller.
 * @param {angular.service.$scope} $scope Angular $scope service.
 * @param {angular.service.$http} $http Angular $http service.
 */
function institutions($scope, $http) {
    var bank = new Yaba.models.Institution({
        $scope: $scope,
        $http: $http
    });
    console.log('Yaba.app.controller(institution).load()');
    bank.load();
    $scope.institution = Yaba.models.EMPTY_Institution;
    $scope.addMapping = function addMapping() {
        $scope.institution.mappings.push({
            fromField: null,
            toField: null,
            mapType: null
        })
    };
}
// END: This fails.
// Why?!?!