From 37d37a6bec3aad5e3ac6d94ea97198bc2a8a9a16 Mon Sep 17 00:00:00 2001
From: Georgios Konstantopoulos <me@gakonst.com>
Date: Sun, 31 May 2020 19:20:08 +0300
Subject: [PATCH] add a prelude to make importing stuff easier

---
 crates/ethers/examples/contract.rs     |  6 ++----
 crates/ethers/examples/ens.rs          |  2 +-
 crates/ethers/examples/get_logs.rs     |  5 +----
 crates/ethers/examples/local_signer.rs |  8 ++------
 crates/ethers/examples/sign.rs         |  4 ++--
 crates/ethers/examples/transfer_eth.rs |  8 +-------
 crates/ethers/src/lib.rs               | 23 +++++++++++++++++++++++
 7 files changed, 32 insertions(+), 24 deletions(-)

diff --git a/crates/ethers/examples/contract.rs b/crates/ethers/examples/contract.rs
index 9abd4c83..bb9ea960 100644
--- a/crates/ethers/examples/contract.rs
+++ b/crates/ethers/examples/contract.rs
@@ -1,9 +1,7 @@
 use anyhow::Result;
 use ethers::{
-    contract::{abigen, ContractFactory},
-    core::utils::{GanacheBuilder, Solc},
-    providers::HttpProvider,
-    signers::MainnetWallet,
+    prelude::*,
+    utils::{GanacheBuilder, Solc},
 };
 use std::convert::TryFrom;
 
diff --git a/crates/ethers/examples/ens.rs b/crates/ethers/examples/ens.rs
index 7326387c..6aa24886 100644
--- a/crates/ethers/examples/ens.rs
+++ b/crates/ethers/examples/ens.rs
@@ -1,5 +1,5 @@
 use anyhow::Result;
-use ethers::{core::types::TransactionRequest, providers::HttpProvider, signers::MainnetWallet};
+use ethers::prelude::*;
 use std::convert::TryFrom;
 
 #[tokio::main]
diff --git a/crates/ethers/examples/get_logs.rs b/crates/ethers/examples/get_logs.rs
index 053dd2ef..142ef659 100644
--- a/crates/ethers/examples/get_logs.rs
+++ b/crates/ethers/examples/get_logs.rs
@@ -1,8 +1,5 @@
 use anyhow::Result;
-use ethers::{
-    core::types::{Address, Filter},
-    providers::{networks::Any, HttpProvider},
-};
+use ethers::{networks::Any, prelude::*};
 use std::convert::TryFrom;
 
 #[tokio::main]
diff --git a/crates/ethers/examples/local_signer.rs b/crates/ethers/examples/local_signer.rs
index d4fe5059..09a8bb26 100644
--- a/crates/ethers/examples/local_signer.rs
+++ b/crates/ethers/examples/local_signer.rs
@@ -1,9 +1,5 @@
 use anyhow::Result;
-use ethers::{
-    core::{types::TransactionRequest, utils::GanacheBuilder},
-    providers::HttpProvider,
-    signers::MainnetWallet,
-};
+use ethers::{prelude::*, utils::GanacheBuilder};
 use std::convert::TryFrom;
 
 #[tokio::main]
@@ -37,7 +33,7 @@ async fn main() -> Result<()> {
 
     let receipt = client.get_transaction_receipt(tx.hash).await?;
 
-    println!("Send tx: {}", serde_json::to_string(&tx)?);
+    println!("Sent tx: {}\n", serde_json::to_string(&tx)?);
     println!("Tx receipt: {}", serde_json::to_string(&receipt)?);
 
     Ok(())
diff --git a/crates/ethers/examples/sign.rs b/crates/ethers/examples/sign.rs
index 35103636..3df2d55f 100644
--- a/crates/ethers/examples/sign.rs
+++ b/crates/ethers/examples/sign.rs
@@ -1,8 +1,8 @@
-use ethers::signers::{MainnetWallet as Wallet, Signer};
+use ethers::prelude::*;
 
 fn main() {
     let message = "Some data";
-    let wallet = Wallet::new(&mut rand::thread_rng());
+    let wallet = MainnetWallet::new(&mut rand::thread_rng());
 
     // sign a message
     let signature = wallet.sign_message(message);
diff --git a/crates/ethers/examples/transfer_eth.rs b/crates/ethers/examples/transfer_eth.rs
index 2dcaf0a3..eac06309 100644
--- a/crates/ethers/examples/transfer_eth.rs
+++ b/crates/ethers/examples/transfer_eth.rs
@@ -1,11 +1,5 @@
 use anyhow::Result;
-use ethers::{
-    core::{
-        types::{BlockNumber, TransactionRequest},
-        utils::GanacheBuilder,
-    },
-    providers::{networks::Any, HttpProvider},
-};
+use ethers::{networks::Any, prelude::*, utils::GanacheBuilder};
 use std::convert::TryFrom;
 
 #[tokio::main]
diff --git a/crates/ethers/src/lib.rs b/crates/ethers/src/lib.rs
index 2287d0b1..9d5bc8af 100644
--- a/crates/ethers/src/lib.rs
+++ b/crates/ethers/src/lib.rs
@@ -34,3 +34,26 @@ pub mod signers {
 pub mod core {
     pub use ethers_core::*;
 }
+
+// Re-export ethers_core::utils
+#[cfg(feature = "core")]
+pub use ethers_core::utils;
+
+// Re-export ethers_providers::networks
+#[cfg(feature = "providers")]
+pub use ethers_providers::networks;
+
+/// Brings all types, contract, providers and signer imports into scope
+pub mod prelude {
+    #[cfg(feature = "contract")]
+    pub use ethers_contract::*;
+
+    #[cfg(feature = "providers")]
+    pub use ethers_providers::*;
+
+    #[cfg(feature = "signers")]
+    pub use ethers_signers::*;
+
+    #[cfg(feature = "core")]
+    pub use ethers_core::types::*;
+}