[FL-3579, FL-3601, FL-3714] JavaScript runner

[nminaylov]

What's new

• JS scripting engine based on MJS lib
• Plugin-based JS module system
• Initial set of JS modules: BadUSB, UART, dialog, notification, flipper
• file_browser: support for multiple extensions filter
• Running JS scripts from Apps menu or archive

Verification

• Run examples from Apps -> Scripts

Checklist (For Reviewer)

• PR has description of feature/bug or link to Confluence/Jira task
• Description contains actions to verify feature/bugfix
• I've built this code, uploaded it to the device and verified feature/bugfix

[github-actions]

PVS-Studio report for commit 471df948:

• Report

[github-actions]

Compiled f7 firmware for commit 0e8a785a:

• 📦 Update package
• 📥 DFU file
• ☁️ Web/App updater

[cowchimp]

so excited about this 🤩

[vtrenton]

Just noting - JavaScript - while popular is a very heavy language compared to something like C. The flipper isn't exactly a compute powerhouse, so I'm concerned that there will be a substantial performance penalty integrating a high-level interpreted language like this. thoughts?

[jessycormier]

Just noting - JavaScript - while popular is a very heavy language compared to something like C. The flipper isn't exactly a compute powerhouse, so I'm concerned that there will be a substantial performance penalty integrating a high-level interpreted language like this. thoughts?

I believe there are available tooling to convert Js to C. I wonder if this could be part of a "build process" to enable the faster running of the Js.

[vtrenton]

I believe there are available tooling to convert Js to C. I wonder if this could be part of a "build process" to enable the faster running of the Js.

I think that would be a great idea because it allows devs more familiar with JavaScript to write applications for the Flipper platform which as I understand would be the intent of this PR. Obviously, we'd want to build BEFORE reaching the end device - no JIT stuff - because you do not want to compile C on the flipper. So you'd be able to write JS and have that build to a binary .fap file. This PR appears to be adding a JS interpreter on the actual Flipper itself so you can run JS natively on the flipper... I personally think performance issues will start coming up quick going this route.

[nvx]

This would be perfect for NFC KDF plugins (#3197)

[ghost]

Looking forward to this!

[dogtopus]

@vtrenton It's also worth noting that MJS is not any known version of JavaScript. It's a proprietary subset that misses critical features to the point that I'm a bit hesitant to call it JavaScript. This also means no TypeScript support out of the box and no npm package transpilation (not just the heavy modules, no, not even a single line hello world program would be allowed) unless one can figure out how to polyfill.

TBH I don't know how usable this really is other than writing some really simple programs with it, since for more complex programs the development overhead might be even bigger than C especially without TypeScript support.

[Bachar-official]

Great news! Wanna see docs about this feature.