Function when

when<TObsv, TPath>(obj, path, callback, options?): IHandle
Watches the given path on the given object and invokes the callback when the value of the property becomes truthy.

If the value of the property is already truthy, the callback will be invoked immediately.
Type Parameters
- TObsv extends Observable
- TPath extends string
Parameters
- obj: TObsv
  The object to watch.
- path: TPath
  The property path to watch.
- callback: (() => void)
  The callback to invoke when the property becomes truthy.
  - - (): void
    - Returns void
- Optionaloptions: WhenOptions
  Optional. The options to use for watching the property.
Returns IHandle
when<TObsv, TPath>(obj, path, callback, options?): IHandle
Type Parameters
- TObsv extends Observable
- TPath extends `${string}.${string}.${string}.${string}`
Parameters
- obj: TObsv
- path: TPath
- callback: (() => void)
  - - (): void
    - Returns void
- Optionaloptions: WhenOptions
Returns IHandle