Postgres JSONB_ARRAY_ELEMENTS with counter or index value

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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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