TS1086: An accessor cannot be declared in an ambient context.

[azizkhani]

    
    ERROR in node_modules/@asymmetrik/ngx-leaflet/dist/leaflet/layers/base/leaflet-baselayers.directive.d.ts(22,9): error TS1086: An accessor cannot be declared in an ambient context.
    node_modules/@asymmetrik/ngx-leaflet/dist/leaflet/layers/base/leaflet-baselayers.directive.d.ts(25,9): error TS1086: An accessor cannot be declared in an ambient context.
    node_modules/@asymmetrik/ngx-leaflet/dist/leaflet/layers/control/leaflet-control-layers.directive.d.ts(21,9): error TS1086: An accessor cannot be declared in an ambient context.
    node_modules/@asymmetrik/ngx-leaflet/dist/leaflet/layers/control/leaflet-control-layers.directive.d.ts(22,9): error TS1086: An accessor cannot be declared in an ambient context.
    node_modules/@asymmetrik/ngx-leaflet/dist/leaflet/layers/leaflet-layers.directive.d.ts(24,9): error TS1086: An accessor cannot be declared in an ambient context.
    node_modules/@asymmetrik/ngx-leaflet/dist/leaflet/layers/leaflet-layers.directive.d.ts(25,9): error TS1086: An accessor cannot be declared in an ambient context.
    

[reblace]

I think this is caused by: microsoft/TypeScript#33939 - It's a backward compatibility with newer Typescript versions.

I suspect your solution is to upgrade Typescript and ng cli to make sure you're running the latest CLI and at least typescript 3.7+.

If not, you should post your package.json

[cranfillkd]

Updating to Angular 9 fixed this for me. https://update.angular.io/

[reblace]

Closing as upgrading Angular CLI is the fix.