jsonc-eslint-parser

:name_badge: Introduction

JSON, JSONC and JSON5 parser for use with ESLint plugins.

This parser allows us to lint JSON, JSONC and JSON5 files. This parser and the rules of eslint-plugin-jsonc would catch some of the mistakes and code style violations.

See eslint-plugin-jsonc for details.

:cd: Installation

npm i --save-dev jsonc-eslint-parser

:book: Usage

In your ESLint configuration file, set the overrides > parser property:

{
  // ...
  // Add the following settings.
  "overrides": [
    {
      "files": ["*.json", "*.json5"], // Specify the extension or pattern you want to parse as JSON.
      "parser": "jsonc-eslint-parser", // Set this parser.
    },
  ],
}

:gear: Configuration

The following additional configuration options are available by specifying them in parserOptions in your ESLint configuration file.

{
  // ...
  "overrides": [
    {
      "files": ["*.json", "*.json5"],
      "parser": "jsonc-eslint-parser",
      // Additional configuration options
      "parserOptions": {
        "jsonSyntax": "JSON5"
      }
    },
  ],
}

`parserOptions.jsonSyntax`

Set to "JSON", "JSONC" or "JSON5". Select the JSON syntax you are using.
If not specified, all syntaxes that express static values are accepted. For example, template literals without interpolation.

Note : Recommended to loosen the syntax checking by the parser and use check rules of eslint-plugin-jsonc to automatically fix it.

Usage for Custom Rules / Plugins

AST.md is AST specification.
Plugins.md describes using this in an ESLint plugin.
no-template-literals.ts is an example.
You can see the AST on the Online DEMO.

:traffic_light: Semantic Versioning Policy

jsonc-eslint-parser follows Semantic Versioning.

:couple: Related Packages

eslint-plugin-jsonc ... ESLint plugin for JSON, JSON with comments (JSONC) and JSON5.
eslint-plugin-yml ... ESLint plugin for YAML.
eslint-plugin-toml ... ESLint plugin for TOML.
eslint-plugin-json-schema-validator ... ESLint plugin that validates data using JSON Schema Validator.
yaml-eslint-parser ... YAML parser for use with ESLint plugins.
toml-eslint-parser ... TOML parser for use with ESLint plugins.