There is a section talking about getting 1.0 to work on VS Code here.
Extracted:
For vscode you will need the
j0.7branch of julia-vscode from my fork. You’ll need to uninstall any existing version vscode and clone to~/.vscode/extensions. Building this requires TypeScript and npm (tsc -pandnpm install).
Has anyone tried it?  I tried to build it but what exactly is the tsc -p command?