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In order to develop smart contracts you will need Node.js for javascript, and the rust toolchain for Rust.

Developing Contracts in Rust​

Follow these instructions for setting up Rust. Then, add the wasm32-unknown-unknown toolchain which enables compiling Rust to Web Assembly (wasm), the low-level language used by the NEAR platform.

# Get Rust in linux and MacOS
curl --proto '=https' --tlsv1.2 -sSf | sh
source $HOME/.cargo/env

# Add the wasm toolchain
rustup target add wasm32-unknown-unknown