Fyi, downloaded the app, installed it and when I launched I'm greeted with this error:

Uncaught Exception:
Error: 
Something went wrong installing the "sharp" module

dlopen(/Applications/Graphite.app/Contents/Resources/app.asar.unpacked/node_modules/sharp/build/Release/sharp-darwin-x64.node, 0x0001): Library not loaded: @rpath/libvips-cpp.42.dylib
Referenced from: <8E44C8DA-AB29-314C-9D4D-0E8353480586> /Applications/Graphite.app/Contents/Resources/app.asar.unpacked/node_modules/sharp/build/Release/sharp-darwin-x64.node
Reason: tried: '/Applications/Graphite.app/Contents/Resources/app.asar.unpacked/node_modules/sharp/build/Release/../.././vendor/8.14.5/darwin-x64/lib/libvips-cpp.42.dylib' (no such file), '/Applications/Graphite.app/Contents/Resources/app.asar.unpacked/node_modules/sharp/build/Release/../.././vendor/8.14.5/darwin-x64/lib/libvips-cpp.42.dylib' (no such file), '/Applications/Graphite.app/Contents/Frameworks/Electron Framework.framework/Versions/A/Libraries/libvips-cpp.42.dylib' (no such file), '/Applications/Graphite.app/Contents/Frameworks/libvips-cpp.42.dylib' (no such file), '/usr/lib/libvips-cpp.42.dylib' (no such file, not in dyld cache)

Possible solutions:
- Install with verbose logging and look for errors: "npm install --ignore-scripts=false --foreground-scripts --verbose sharp"
- Install for the current darwin-x64 runtime: "npm install --platform=darwin --arch=x64 sharp"
- Consult the installation documentation: <https://sharp.pixelplumbing.com/install>
at Object.<anonymous> (/Applications/Graphite.app/Contents/Resources/app.asar/node_modules/sharp/lib/sharp.js:37:9)
at Module._compile (node:internal/modules/cjs/loader:1271:14)
at Object..js (node:internal/modules/cjs/loader:1326:10)
at Module.load (node:internal/modules/cjs/loader:1126:32)
at node:internal/modules/cjs/loader:967:12
at Function._load (node:electron/js2c/asar_bundle:2:13327)
at Module.require (node:internal/modules/cjs/loader:1150:19)
at require (node:internal/modules/cjs/helpers:121:18)
at Object.<anonymous> (/Applications/Graphite.app/Contents/Resources/app.asar/node_modules/sharp/lib/constructor.js:11:1)
at Module._compile (node:internal/modules/cjs/loader:1271:14)

I think the app might have closed itself automatically about 30 seconds after I opened it for the first time. I relaunched and all seems well.