js-compute-runtime
now
js-compute-runtime | now | |
---|---|---|
8 | 8 | |
200 | 3 | |
0.5% | - | |
9.5 | 3.4 | |
5 days ago | over 1 year ago | |
JavaScript | JavaScript | |
Apache License 2.0 | GNU General Public License v3.0 only |
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js-compute-runtime
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What sorts of things would you consider to be “advanced” javascript concepts?
There are multiple JavaScript runtimes. SpiderMonkey is one example that has nothing to do with Node.js, see (js-compute-runtime)[https://github.com/fastly/js-compute-runtime].
- [AskJS] Has anybody implemented and compiled ServiceWorker specification to a standalone executable?
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JavaScript support hits 1.0 milestone on Compute@Edge
We listened to the community feedback, filled in feature gaps, and addressed many bugs in the SDK. Not only that, we’ve also overhauled the SDK reference docs making it easier for you to know what’s supported and how to implement the features. All the Fastly specific features of the JS SDK now have interactive example applications in the documentation.
- Workerd: The Open Source Cloudflare Workers Runtime
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Wasmtime 1.0
These are good questions! Here's some answers from the corner of the world I know best as a Wasmtime contributor at Fastly:
1. Spidermonkey.wasm is the basis of Fastly's JavaScript on Compute@Edge support. We have found it to be faster than QuickJS. The source code is here: https://github.com/fastly/js-compute-runtime.
2. Fastly Compute@Edge is built on wasmtime. You can develop web services for it in Rust, JS, and Go: https://developer.fastly.com/learning/compute/
3. Fastly's multi-tenant platform is closed source, but our single-tenant local development platform, which also uses wasmtime under the hood as well, is open source: https://github.com/fastly/viceroy. It isn't a big leap to make viceroy multi-tenant: Wasmtime provides everything you need, and all Viceroy would have to do is dispatch on e.g. HTTP host header to the correct tenant. Our multi-tenant platform is closed source because it is very specialized for use on Fastly's edge, not because the multi-tenant aspect is special.
- Fastly Compute Edge JavaScript Runtime
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Debunking Cloudflare’s recent performance tests
btw. for what it's worth their javascript to wasm is opensource:
- https://github.com/fastly/js-compute-runtime
- https://github.com/tschneidereit/spidermonkey-wasi-embedding
and besides that it is slower than nodejs it is still plenty fast (no matter that it is not as fast as they want) btw. it's startup is faster than node. (maybe better pgo might help)
now
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Can you make your own JavaScript by implementing ECMAScript standard?
Technically you can run Node.js in the browser right now now.
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Can you use JavaScript to create an app that installs Node.Js then deploys the (or an) app?
Here is an example of downloading Node.js, extracting node executable, compiling to WASM to use node in the browser https://github.com/cemalgnlts/now.
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What sorts of things would you consider to be “advanced” javascript concepts?
Just to demonstrate how finicky folks on this r/learnjavascript are: I shared this Node on Web. Use Nodejs freely in your browser with Linux infrastructure. here and on r/node. r/node folks get it, that is, the work that had to go in to making that a reality. Folks on this r/learnjavascript evidently don't get the effort it took to make that so, after StackBlitz announced "... run Node.js, entirely inside your browser" only to walk back from that claim here https://github.com/stackblitz/webcontainer-core/issues/658#issuecomment-1091004244 "We currently do not expose a way to use WebContainer outside of StackBlitz.com".
- Node on Web. Use Nodejs freely in your browser with Linux infrastructure.
- This website lets you run linux in browser
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IT department refuses to let me install Python and other programs/languages I need for my job.
For running programming languages other than JavaScript in the browser there is Emscripten and WebAssembly. There is v86, where a Linux build is compiled to WASM. Folks have written QuickJS into a Linux build compiled to WASM, Node.js into the Linux buildroot https://github.com/cemalgnlts/now, so Python or CPython can be written to the image and loaded into the browser as WASM as well https://github.com/pyodide/pyodide.
What are some alternatives?
quickjs-rs - Rust wrapper for the quickjs Javascript engine.
browser-shell - A Linux command-line shell in the browser
workerd - The JavaScript / Wasm runtime that powers Cloudflare Workers
wasm-workers-server - 🚀 Develop and run serverless applications on WebAssembly
spidermonkey-wasi-embedding
jor1k - Online OR1K Emulator running Linux
javy - JS to WebAssembly toolchain
wasm-jseval - A safe eval library based on WebAssembly and Duktape/QuickJS.
landlord - Provides the ability to run multiple JVM based applications on the one JVM
single-executable - This team aims to advance the state of the art in packaging Node.js applications as single standalone executables (SEAs) on all supported operating systems.
spidermonkey-wasi-embedding
c-cpp-to-javascript - Based on EMSDK Emscripten project.