build(ariadne): vendor serde crates

third_party/crates/serde_json-1.0.151/src/io/mod.rs

@@ -0,0 +1,20 @@
+//! A tiny, `no_std`-friendly facade around `std::io`.
+//! Reexports types from `std` when available; otherwise reimplements and
+//! provides some of the core logic.
+//!
+//! The main reason that `std::io` hasn't found itself reexported as part of
+//! the `core` crate is the `std::io::{Read, Write}` traits' reliance on
+//! `std::io::Error`, which may contain internally a heap-allocated `Box<Error>`
+//! and/or now relying on OS-specific `std::backtrace::Backtrace`.
+
+pub use self::imp::{Error, ErrorKind, Result, Write};
+
+#[cfg(not(feature = "std"))]
+#[path = "core.rs"]
+mod imp;
+
+#[cfg(feature = "std")]
+use std::io as imp;
+
+#[cfg(feature = "std")]
+pub use std::io::{Bytes, Read};