talm

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// This Source Code Form is subject to the terms of the Mozilla Public
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// License, v. 2.0. If a copy of the MPL was not distributed with this
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// file, You can obtain one at http://mozilla.org/MPL/2.0/.
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// Package ctxutil provides utilities for working with contexts.
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package ctxutil
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import "context"
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// Cause returns the cause of the context error, or nil if there is no error or the error is a usual context error.
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func Cause(ctx context.Context) error {
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	if c := context.Cause(ctx); c != ctx.Err() {
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		return c
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	}
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	return nil
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}
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