Class LazyValue<T>

Example

 import { LazyValue } from "apprt-core/promise-utils";

 const lazy = new LazyValue();

 // code which needs the value, has to use:
 const theValue = await lazy.promise;

 // code which like to update the value uses:
 lazy.value = "newValue";

 // the value can updated several times.
 // with every update the promise is replaced

 // this resets the value to not fulfilled
 // the promise will then block again.
 lazy.value = undefined;

 // NOTE: currently the promise can not be switched into an error state.
Copy