Flycheck checker for json-mode using jsonlint from demjson

This package provides a flycheck checker for json-mode using jsonlint from demjson.

Why another JSON checker

The built in JSON checker uses zaach/jsonlint which has no rules support, but jsonlint from demjson has a set of options let you control which checks are to be performed, e.g. trailing-comma is allowed in .eslintrc but forbidden in package.json.

Installation

1. Uninstall zaach/jsonlint if necessary to avoid conflicts:

   npm -g uninstall jsonlint

2. Install demjson, more info at installing-demjson:

   pip install demjson or easy_install demjson

3. Install flycheck-demjsonlint which is available from :

   M-x package-install [RET] flycheck-demjsonlint [RET].

Configuration

(require 'flycheck-demjsonlint)

Lint Rules(.demjsonrc)

• Built-in support: .eslintrc, package.json
• Precedence: ~/.demjsonrc over pkg-dir/.demjsonrc
• Format: one record per line, filename=jsonlint-cmd-options, e.g. .eslintrc=-S
• Implementation: demjsonlint is just a wrapper of jsonlint from demjson, jsonlint-cmd-options is passed to jsonlint as is