eslint-plugin-babel/rules/array-bracket-spacing.js

an eslint rule plugin companion to babel-eslint

"use strict";

var isWarnedForDeprecation = false;
module.exports = {
    meta: {
        deprecated: true,
        schema: [
            {
                "enum": ["always", "never"]
            },
            {
                "type": "object",
                "properties": {
                    "singleValue": {
                        "type": "boolean"
                    },
                    "objectsInArrays": {
                        "type": "boolean"
                    },
                    "arraysInArrays": {
                        "type": "boolean"
                    }
                },
                "additionalProperties": false
            }
        ]
    },
    create: function() {
        return {
            Program: function() {
                if (isWarnedForDeprecation || /\=-(f|-format)=/.test(process.argv.join('='))) {
                    return;
                }

                /* eslint-disable no-console */
                console.log('The babel/array-bracket-spacing rule is deprecated. Please ' +
                            'use the built in array-bracket-spacing rule instead.');
                /* eslint-enable no-console */
                isWarnedForDeprecation = true;
            }
        };
    }
};