transferFlags.js
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/*!
* Chai - transferFlags utility
* Copyright(c) 2012-2014 Jake Luer <jake@alogicalparadox.com>
* MIT Licensed
*/
/**
* ### transferFlags(assertion, object, includeAll = true)
*
* Transfer all the flags for `assertion` to `object`. If
* `includeAll` is set to `false`, then the base Chai
* assertion flags (namely `object`, `ssfi`, and `message`)
* will not be transferred.
*
*
* var newAssertion = new Assertion();
* utils.transferFlags(assertion, newAssertion);
*
* var anotherAsseriton = new Assertion(myObj);
* utils.transferFlags(assertion, anotherAssertion, false);
*
* @param {Assertion} assertion the assertion to transfer the flags from
* @param {Object} object the object to transfer the flags to; usually a new assertion
* @param {Boolean} includeAll
* @name transferFlags
* @api private
*/
module.exports = function (assertion, object, includeAll) {
var flags = assertion.__flags || (assertion.__flags = Object.create(null));
if (!object.__flags) {
object.__flags = Object.create(null);
}
includeAll = arguments.length === 3 ? includeAll : true;
for (var flag in flags) {
if (includeAll ||
(flag !== 'object' && flag !== 'ssfi' && flag != 'message')) {
object.__flags[flag] = flags[flag];
}
}
};