vscode-json-languageservice

JSON language service extracted from VSCode to be reused, e.g in the Monaco editor.

Why?

The vscode-json-languageservice contains the language smarts behind the JSON editing experience of Visual Studio Code and the Monaco editor.

doValidation analyses an input string and returns syntax and lint errors.
doComplete provides completion proposals for a given location.
doResolve resolves a completion proposals.
doHover provides a hover text for a given location.
findDocumentSymbols provides all symbols in the given document.
findDocumentColors provides all color symbols in the given document.
getColorPresentations returns available color formats for a color symbol.
format formats the code at the given range.
getFoldingRanges gets folding ranges for the given document.
getSelectionRanges gets selection ranges for a given location.
getMatchingSchemas matches a document against its schema and returns all AST nodes along with the matching sub schemas.
parseJSONDocument creates a JSON document from source code.
newJSONDocument creates a JSON document from an AST.

npm install --save vscode-json-languageservice

See sample.ts for an example on how to use the JSON language service.

To run the sample use yarn sample

git clone https://github.com/microsoft/vscode-json-languageservice
cd vscode-json-languageservice
yarn

Use yarn test to compile and run tests

run VSCode out of sources setup as described here: https://github.com/Microsoft/vscode/wiki/How-to-Contribute
use yarn link vscode-json-languageservice in vscode/extensions/json-language-features/server to run VSCode with the latest changes from vscode-json-languageservice
run VSCode out of source (vscode/scripts/code.sh|bat) and open a .json file
in VSCode window that is open on the vscode-json-languageservice sources, run command Debug: Attach to Node process and pick the code-oss process with the json-language-features path
set breakpoints, e.g. in jsonCompletion.ts
in the instance run from sources, invoke code completion in the .json file