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49 lines
1.5 KiB
Markdown
49 lines
1.5 KiB
Markdown
[](https://deploy.now.sh/?repo=https://github.com/zeit/next.js/tree/master/examples/hello-world)
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# WebAssembly example
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## How to use
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### Using `create-next-app`
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Execute [`create-next-app`](https://github.com/segmentio/create-next-app) with [Yarn](https://yarnpkg.com/lang/en/docs/cli/create/) or [npx](https://github.com/zkat/npx#readme) to bootstrap the example:
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```bash
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npx create-next-app --example with-webassembly with-webassembly-app
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# or
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yarn create next-app --example with-webassembly with-webassembly-app
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```
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### Download manually
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Download the example:
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```bash
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curl https://codeload.github.com/zeit/next.js/tar.gz/canary | tar -xz --strip=2 next.js-canary/examples/with-webassembly
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cd with-webassembly
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```
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Install it and run:
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This example uses Rust compiled to wasm, the wasm file is included in the example, but to compile your own Rust code you'll have to [install](https://www.rust-lang.org/en-US/) Rust.
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```bash
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npm install
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npm run dev
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# or
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yarn
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yarn dev
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```
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To compile `src/add.rs` to `add.wasm` use `npm run build-rust`.
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Deploy it to the cloud with [now](https://zeit.co/now) ([download](https://zeit.co/download))
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```bash
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now
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```
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## The idea behind the example
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This example shows how to import WebAssembly files (`.wasm`) and use them inside of a React component that is server rendered. So the WebAssembly code is executed on the server too. In the case of this example we're showing Rust compiled to WebAssembly.
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