Point to the clang-tidy check that rewrites implicit conversions (#5563)

The community-maintained clang-tidy check
modernize-nlohmann-json-explicit-conversions rewrites implicit
conversions into explicit get<T>() calls, which is exactly the
preparation the docs ask for ahead of implicit conversions being
switched off by default. Mention it on the JSON_USE_IMPLICIT_CONVERSIONS
page and in the migration guide, as promised in discussion #4610.

Signed-off-by: Niels Lohmann <mail@nlohmann.me>
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Niels Lohmann authored and GitHub committed 2026-09-24 17:02:48 +02:00
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@@ -176,6 +176,12 @@ You can prepare existing code by already defining
conversions with calls to [`get`](../api/basic_json/get.md), [`get_to`](../api/basic_json/get_to.md),
[`get_ref`](../api/basic_json/get_ref.md), or [`get_ptr`](../api/basic_json/get_ptr.md).
!!! tip "Automatic migration"
The community-maintained clang-tidy check `modernize-nlohmann-json-explicit-conversions` rewrites most implicit
conversions into calls to [`get`](../api/basic_json/get.md). It is not part of clang-tidy itself; see
[discussion #4610](https://github.com/nlohmann/json/discussions/4610) for how to build and use it.
=== "Deprecated"
```cpp