Postgres JSONB_ARRAY_ELEMENTS with counter or index value

Suppose I have this order table, where the widgets column is a jsonb array:

order_no	widgets
50	[a,b,c]
51	[d,e,f]

select
  order_no,
  jsonb_array_elements_text(widgets) widget
from order;

order_no	widget
50	a
50	b
50	c
51	d
51	e
51	f

Is there a way to get the query to include an increment/counter for each jsonb array element from the record in order? (the example is zero-based, but find with 1-based...)

order_no	widget	item_no
50	a	0
50	b	1
50	c	2
51	d	0
51	e	1
51	f	2

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