How does throttleTime operator's config parameter work? (ThrottleConfig)

Question

I have read the throttleTime documentation, but I don\'t get the operator fully.

I know how throttleTime(1000) works. After an event arrives it will ski

Answer 1

throttleTime will start a new throttle interval (a time period in which no items will be emitted) when it receives a new value and isn't already throttled.

leading and trailing specify whether an item should be emitted at the beginning or end of a throttle interval.

leading: Emit the item that starts a new throttle interval at the beginning of the throttle interval.

trailing: Emit the last item received from the source at the end of a throttle interval.

Visualisation

{ leading: true, trailing: false }

source:               --0----1----2----3----4----5----6----7----8-- 
throttle interval:    --[~~~~~~~~~~~~~~~~~]-[~~~~~~~~~~~~~~~~~]-[~~ 
output:               --0-------------------4-------------------8--

{ leading: false, trailing: true }

source:               --0----1----2----3----4----5----6----7----8-- 
throttle interval:    --[~~~~~~~~~~~~~~~~~]-[~~~~~~~~~~~~~~~~~]-[~~ 
output:               --------------------3-------------------7----

{ leading: true, trailing: true }

source:               --0----1----2----3----4----5----6----7----8-- 
throttle interval:    --[~~~~~~~~~~~~~~~~~]-[~~~~~~~~~~~~~~~~~]-[~~  
output:               --0-----------------3-4-----------------7-8--

{ leading: false, trailing: false }

source:               --0----1----2----3----4----5----6----7----8--
throttle interval:    --[~~~~~~~~~~~~~~~~~]-[~~~~~~~~~~~~~~~~~]-[~~
output:               ---------------------------------------------