@swordjs/wasmedge-quickjs
v0.5.0-alpha.1
Published
Now supporting wasmedge socket for HTTP requests and Tensorflow in JavaScript programs!
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Run JavaScript in WebAssembly
Now supporting wasmedge socket for HTTP requests and Tensorflow in JavaScript programs!
Prerequisites
Make sure that you will have GCC installed on Ubuntu 20.04.
$ sudo apt update
$ sudo apt install build-essentialInstall Rust and use the following command to install the wasm32-wasi target.
$ rustup target add wasm32-wasiInstall wasmedge CLI tool. Make sure that you use the -e all option to install the WasmEdge Tensorflow extensions if you want to try the Tensorflow examples.
Hello world
Build
$ cargo build --target wasm32-wasi --releaseRun
$ wasmedge --dir .:. target/wasm32-wasi/release/wasmedge_quickjs.wasm example_js/hello.js WasmEdge RuntimeAdd Core Module With JavaScript(ES)
Build
cargo build --target wasm32-wasi --releaseRun
$ wasmedge --dir .:. target/wasm32-wasi/release/wasmedge_quickjs.wasm example_js/module_demo/demo.js
ReferenceError: could not load module filename 'my_mod_1'
$ ls example_js/module_demo/modules/
my_mod_1.js my_mod_2.js
# copy `my_mod_1.js` & `my_mod_2.js` into modules/
# and wasmedge_quickjs will load it as a core module
$ cp example_js/module_demo/modules/* modules/
$ wasmedge --dir .:. target/wasm32-wasi/release/wasmedge_quickjs.wasm example_js/module_demo/demo.js
hello from "my_mod_1.js"
hello from "my_mod_2.js"
Async HTTP Request
Build
$ cargo build --target wasm32-wasi --releaseRun
HTTP client applications.
$ wasmedge --dir .:. target/wasm32-wasi/release/wasmedge_quickjs.wasm example_js/wasi_http_client.jsStart an HTTP server.
$ nohup wasmedge --dir .:. target/wasm32-wasi/release/wasmedge_quickjs.wasm example_js/wasi_http_echo.js &Access the server.
$ curl -d "WasmEdge" -X POST http://localhost:8000
echo:WasmEdgeThese examples also show how to import another JavaScript file into the current program.
React SSR
Build
$ cargo build --target wasm32-wasi --releaseThen use rollup.js to bundle the React application into a combined JS file. It turns the CommonJS modules in the application into ES6 modules, which we support.
$ cd example_js/react_ssr
$ npm install
$ npm run buildRun
$ wasmedge --dir .:. ../../target/wasm32-wasi/release/wasmedge_quickjs.wasm dist/main.js
<div data-reactroot=""><div>This is home</div><div><div>This is page</div></div></div>React Stream SSR
Build
$ cargo build --target wasm32-wasi --releaseThen use rollup.js to bundle the React application into a combined JS file. It turns the CommonJS modules in the application into ES6 modules, which we support.
$ cd example_js/react_ssr_stream
$ npm install
$ npm run buildRun
Start the server.
$ nohup wasmedge --dir .:. ../../target/wasm32-wasi/release/wasmedge_quickjs.wasm dist/main.mjs &Access the server.
$ curl http://localhost:8001The results show the response comes in chuncks and the client closes the connection once all chuncks are received.
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
0 0 0 0 0 0 0 0 --:--:-- --:--:-- --:--:-- 0
100 211 0 211 0 0 1029 0 --:--:-- --:--:-- --:--:-- 1024
100 275 0 275 0 0 221 0 --:--:-- 0:00:01 --:--:-- 220
100 547 0 547 0 0 245 0 --:--:-- 0:00:02 --:--:-- 245
100 1020 0 1020 0 0 413 0 --:--:-- 0:00:02 --:--:-- 413
<!DOCTYPE html><html lang="en"><head><meta charSet="utf-8"/><title>Title</title></head><body><div><div> This is LazyHome </div><!--$?--><template id="B:0"></template><div> loading... </div><!--/$--></div></body></html><div hidden id="S:0"><template id="P:1"></template></div><div hidden id="S:1"><div><div>This is lazy page</div></div></div><script>function $RS(a,b){a=document.getElementById(a);b=document.getElementById(b);for(a.parentNode.removeChild(a);a.firstChild;)b.parentNode.insertBefore(a.firstChild,b);b.parentNode.removeChild(b)};$RS("S:1","P:1")</script><script>function $RC(a,b){a=document.getElementById(a);b=document.getElementById(b);b.parentNode.removeChild(b);if(a){a=a.previousSibling;var f=a.parentNode,c=a.nextSibling,e=0;do{if(c&&8===c.nodeType){var d=c.data;if("/$"===d)if(0===e)break;else e--;else"$"!==d&&"$?"!==d&&"$!"!==d||e++}d=c.nextSibling;f.removeChild(c);c=d}while(c);for(;b.firstChild;)f.insertBefore(b.firstChild,c);a.data="$";a._reactRetry&&a._reactRetry()}};$RC("B:0","S:0")</script>TensorFlow
Build
Note: Build the QuickJS interpreter with the WasmEdge Tensorflow extension.
$ cargo build --target wasm32-wasi --release --features=tensorflowRun
$ cd example_js/tensorflow_lite_demo
$ wasmedge-tensorflow-lite --dir .:. ../../target/wasm32-wasi/release/wasmedge_quickjs.wasm main.jsES6 module support
Build
$ cargo build --target wasm32-wasi --releaseRun
$ cd example_js/es6_module_demo
$ wasmedge --dir .:. ../../target/wasm32-wasi/release/wasmedge_quickjs.wasm demo.jsOptional: Get static-lib & binding.rs
If you want to build a custom libquickjs.a to export some static c function.
See [quickjs-wasi]
run quickjs-wasi/lib/build.sh