New (config/defaultConfigProvider.go)

Provides thread-safe configuration provider with merge and defaults for Hugo.

// Source: https://github.com/gohugoio/hugo | License: Apache-2.0 | Copyright You must retain, in the Source form of any Derivative Works
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// Copyright 2021 The Hugo Authors. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
//
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// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
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... (truncated -- full source via MCP)