spyPushBefore

Signature - source.ts#L2401

var spyPushBefore: <T>(
    onPush: (value: T, index: number) => void,
) => Operator<T, T>1 var spyPushBefore: <T>(
2     onPush: (value: T, index: number) => void,
3 ) => Operator<T, T>

1	var spyPushBefore: <T>(
2	onPush: (value: T, index: number) => void,
3	) => Operator<T, T>