JSONC (JSON mit Comments) Specification
JSONC ist JSON mit Zeile und Block comments, verwendet durch VS Code und TypeScript Konfiguration Dateien.
Comment Support
JSONC extends JSON with // line comments and /* block comments */. No other syntax changes are made; trailing commas and unquoted keys remain disallowed. The format is used by VS Code settings, tsconfig.json, and other configuration files. JSONC parsers strip comments before standard JSON parsing. The format is a minimal, pragmatic extension for configuration.
- line comments
- // style
- block comments
- /* */ style
- no other changes
- Strict JSON otherwise
VS Code settingstsconfig.jsonminimal extensionParsing Strategy
Most JSONC implementations preprocess input to remove comments before JSON.parse. TypeScript provides native JSONC parsing via tsconfig APIs. VS Code has a built-in JSONC parser with schema validation. The format is not suitable for data interchange due to non-standard parsers. For programmatic config, JSONC offers the simplest extension over JSON.
- preprocess
- Strip then parse
- TypeScript
- Native parse API
- VS Code
- Built-in parser
common approachts.readConfigFilejsonc-parser