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flag.js (807B)

     1 /*!
     2  * Chai - flag utility
     3  * Copyright(c) 2012-2014 Jake Luer <jake@alogicalparadox.com>
     4  * MIT Licensed
     5  */
     6 
     7 /**
     8  * ### flag(object, key, [value])
     9  *
    10  * Get or set a flag value on an object. If a
    11  * value is provided it will be set, else it will
    12  * return the currently set value or `undefined` if
    13  * the value is not set.
    14  *
    15  *     utils.flag(this, 'foo', 'bar'); // setter
    16  *     utils.flag(this, 'foo'); // getter, returns `bar`
    17  *
    18  * @param {Object} object constructed Assertion
    19  * @param {String} key
    20  * @param {Mixed} value (optional)
    21  * @namespace Utils
    22  * @name flag
    23  * @api private
    24  */
    25 
    26 module.exports = function (obj, key, value) {
    27   var flags = obj.__flags || (obj.__flags = Object.create(null));
    28   if (arguments.length === 3) {
    29     flags[key] = value;
    30   } else {
    31     return flags[key];
    32   }
    33 };