Language support for Tessel, a small,
Swift-like language for native apps and command-line programs.
Features
Syntax highlighting for .tsl files.
Errors as you type. The same errors tessel check reports, with their
help text, appear as you edit, before you save, in the editor and in the
Problems panel.
Types on hover. Hover over an expression to see its type.
Code completion. Fields and methods after value., enum cases after
., a module's public names after geometry., and every variable,
function, type and view in scope. Typing . opens the list; Ctrl+Space
asks for it anywhere.
Comment toggling, bracket matching, auto-closing pairs and indentation.
A program is a folder of .tsl files, and the whole folder is checked
together, including the modules it imports.
Requirements
Errors, hover and completion come from the tessel command, which runs as a
language server (tessel lsp). Install Tessel first; see
Installation.
Highlighting works without it.
Settings
Setting
Default
tessel.path
tessel
The tessel command. Set it if tessel isn't on your PATH. ${workspaceFolder} is replaced by the open folder.
In an untrusted workspace, highlighting works, and a folder's own
tessel.path setting is ignored until you trust the folder.
Building from source
npm install
npm run package # makes tessel-<version>.vsix
code --install-extension tessel-<version>.vsix
