Stagger

Stagger the execution of a series of actions.

Import

import { stagger } from 'popmotion';

stagger(actions: Action[], interval: number | (i: number) => number): Action

stagger accepts two arguments, an array of actions and an interval:

stagger([
  tween(),
  spring()
], 100)

When started, it outputs the values as an array. Actions that haven’t yet started will output undefined, and you can define a default.

stagger([
  tween(),
  spring()
], 100).start((values) => values.forEach((v = 0, i) => {
  console.log(v);
}))

stagger() returns:

filter((v: any) => boolean): Returns a new action that filters out values when the provided function returns false.
pipe(...funcs: Array<(v) => v): Returns a new action that will run update values through this sequence of functions.
start(update | { update, complete }): Starts the tween and returns a subscription.
while((v: any) => boolean): Returns a new action that will complete when the provided function returns false.

stagger().start() returns: