Mognitio for Visual Studio Code

Open-source language support for Mognitio, maintained independently of the compiler and language server.

Compatibility

Extension	Mognitio language server	VS Code	Platform
0.1.0	0.15.x formal releases	1.91.0 or later	Linux amd64 desktop; Ubuntu 24.04 and 26.04

Extension versions and language versions are independent. Development toolchains and versions outside the listed range are rejected by the distributed extension. Remote-SSH, WSL, web, and virtual workspaces are not supported in this version. The compatibility table describes the supported contract; see release notes for published artifacts and completed validation.

Features

Associate .mgn files with Mognitio.
Lexical highlighting, comments, brackets, and language configuration.
Semantic highlighting and Problems from the shared Mognitio language server.
Unsaved source analysis, dependency refresh, and multiple project folders.
Syntax diagnostics for standalone saved files.

The extension does not bundle or download a compiler. Install a compatible Mognitio toolchain separately. Make mognitio-lsp available on PATH, or set mognitio.serverPath to its absolute executable path in User settings. Workspace settings cannot select an executable.

Install Mognitio by the Mognitio publisher (mognitio.mognitio) from the Visual Studio Marketplace, or install the exact VSIX from GitHub Releases with Extensions: Install from VSIX.

The GitHub-only preview used the separate ID ProjectCuriositas.mognitio. Uninstall that preview before installing the stable extension; it is not an in-place Marketplace upgrade. The stable release remains independently versioned as 0.1.0. Release assets and their checksums are immutable.

Open a project folder containing mognitio.toml and src/. Semantic analysis requires workspace trust; untrusted workspaces retain lexical highlighting. At most four language server sessions run per window, including a shared standalone-file session. Overlapping source roots are rejected. The server checks source files without running project entry points or tests.

Use Mognitio: Restart Language Server after resolving launch or server failures. Details appear in the Mognitio Output channel. VS Code's editor.semanticHighlighting.enabled setting controls semantic highlighting independently of diagnostics.

Development

Run npm ci, npm run check, npm test, and npm run package.

See CONTRIBUTING.md for contribution, validation, independent versioning, and release rules. See CHANGELOG.md for extension changes and LICENSE for the MIT license.