jlens — JSONata

JSONata in Visual Studio Code, with the language server of jlens, a JSONata 2.2 engine:

• highlighting of .jsonata files;
• diagnostics: syntax errors, unknown functions, wrong argument counts, and fields that the input's schema does not have, with a "did you mean";
• completion of fields, variables and functions, hovers, and signature help;
• a jlens.json at the root of the workspace says which JSON Schema, variables and host functions apply to which files; the extension checks it as it is edited.

The packages for Linux, macOS and Windows on x86-64, and Linux and macOS on ARM64, bundle the jlens binary. On other platforms, install the jlens CLI and the extension uses the jlens on the PATH.

Settings

• jlens.server.path: another jlens program to run, read from user settings only.
• jlens.trace.server: logs the protocol's messages in the jlens output channel.

The command jlens: Restart Language Server starts the server again.

If another JSONata extension is installed, disable its language features, or you get the diagnostics of both.

See the editors guide for jlens.json and the other editors.