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otto
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SSR React in Go
robertkrimen/otto
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Jacobin: Minimal JVM written in Go and capable of running Java 17 classes
Ummm, excuse me, but where the f&$k has this been hiding? I’ve been looking for ways to extend my go applications with scripting support. I started with Lua (worked ) then Python (worked but hacky) then javascript using otto [1]. However it lacks ES6 support so having pretty OOP js code is a non-starter. I would love to have Java as a runtime that can be executed from goroutines.
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Running a Js file inside Go
Either call a JavaScript interpreter like node with exec.Command and read its stdout, or use a pure Go JavaScript interpreter like goja or otto.
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Suggestion for a dynamic Struct Validation Rules
Otto https://github.com/robertkrimen/otto Seems interesting. It lets me call Go functions from inside JS as well as return results. The fncs pattern reminds me a bit of how the template engine works.
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Wazero: The zero dependency WebAssembly runtime for Go developers
> why host other languages
Here's an example:
I recently finished building https://subzo.com.au which allows customizing and ordering 3D models. The way the model's cost, volume and other attributes are calculated needs to be done both on the frontend (for speed) and on the backend (to validate). Backend is in Go and we can't practically run Go in the browser. So instead, I wrote the calculation snippets in JavaScript (which runs natively in the browser) and ran them on the backend on a JavaScript VM library written in Go [1].
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Choosing scripting extension - need advice
Googling suggests https://github.com/robertkrimen/otto which allows scripting in javascript for golang projects. This would be definitely enough, but in some way it may be a bit overkill - and scripts supporter shall need some knowledge of javascript which is not always straightforward :)
- I Need to Find an Apartment
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I write my own web desktop OS for 3 years and this is what it looks like now
It doesn't make sense to ask the user (aka me) to change the code every time I want to modify any web apps right? So I decided to split the webapps into two parts. WebApps are those only require basic permissions and do not interact with the host OS. They will be run inside a sandbox created using ECMA5 VM called Otto. The other type is called Subservice, in which it will need extra permission to interact with the OS and require higher level of access to the backend file system.
go-lua
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Jacobin: Minimal JVM written in Go and capable of running Java 17 classes
https://github.com/Shopify/go-lua
Unless you specifically need a JVM either of these will be a much more practical and mature choice for embedded scripting.
Alternatively if you prefer JS then Otto is a good choice:
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Are there any Golang Lua VMs that support snapshotting/serializationi?
Do you know about go-lua? There's a good discussion of various go lua implementations here, including this choice quote:
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Change go code behaviour at runtime
There are lua and Go-script options. My impression is that a few are well accepted but perhaps just a little less widely used than the first two. I cannot speak from personal experience on them. Shopify has a Lua 5.2 port: https://github.com/Shopify/go-lua and I know https://github.com/bitfield/script is one of the Go-like scripting languages, but I think it's more for a shell script replacement than embedding.
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Show HN: LadyLua, batteries-included static Lua 5.1 interpreter
GopherLua [0] is a Lua implementation written in Go, not just a wrapper around the C implementation.
The main alternative seems to be Shopify’s go-lua [1], given that Microsoft’s golua [2] is no longer being developed. The main difference between these three implementations seems to be the supported Lua version - 5.1, 5.2 and 5.3 respectively.
[0] https://github.com/yuin/gopher-lua
What are some alternatives?
goja - ECMAScript/JavaScript engine in pure Go
gopher-lua - GopherLua: VM and compiler for Lua in Go
go-php - PHP bindings for the Go programming language (Golang)
go-duktape - [abandoned] Duktape JavaScript engine bindings for Go
tengo - A fast script language for Go
go-python - naive go bindings to the CPython2 C-API
anko - Scriptable interpreter written in golang
golua - Go bindings for Lua C API - in progress