Response in ResponseError of withDecoder combinator cannot be consumed

[StefanoMagrassi]

Description

The Response object (carried by response field) in ResponseError raised by withDecoder combinator cannot be consumed (namely using .text(), .json() etc. methods) because the body stream is already read (the combinator acts on a the "response side" of a fetch request).

Look at the spec for further information.

Current behavior

If you try to access to response's content of a ResponseError returned when withDecoder is applied a TypeError: body used already is thrown.

Expected behavior

The response's content should be readable also from withDecoder's ResponseError.

Environment:

• OS: all
• Browser: all
• Node/npm version: all
• Typescript version: all

Additional information

This bug has to be avoided also for other future combinators that act on "response side" of a request.