feat: initial commit

Cargo.toml

@@ -0,0 +1,31 @@
+[package]
+name = "teewriter"
+version = "0.1.0"
+edition = "2024"
+
+[package.metadata.docs.rs]
+all-features = true
+rustdoc-args = ["--cfg", "docsrs"]
+
+[dependencies]
+futures = { version = "0.3.31", optional = true }
+tokio = { version = "1.48.0", features = [
+  "io-std",
+  "io-util",
+], optional = true }
+
+[dev-dependencies]
+futures = "0.3.31"
+tokio = { version = "1.48.0", features = [
+  "rt",
+  "macros",
+  "io-util",
+  "io-std",
+  "rt-multi-thread",
+] }
+
+[features]
+tokio = ["dep:tokio"]         # Enables tokio::io AsyncRead / AsyncWrite support
+futures = ["dep:futures"]     # Enables futures::io AsyncRead / AsyncWrite support
+io-std = []                   # Enables std::io Read / Write support
+default = ["tokio", "io-std"]