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Diffstat (limited to 'node_modules/clone/clone.js')
-rw-r--r-- | node_modules/clone/clone.js | 166 |
1 files changed, 0 insertions, 166 deletions
diff --git a/node_modules/clone/clone.js b/node_modules/clone/clone.js deleted file mode 100644 index ba200c2..0000000 --- a/node_modules/clone/clone.js +++ /dev/null @@ -1,166 +0,0 @@ -var clone = (function() { -'use strict'; - -/** - * Clones (copies) an Object using deep copying. - * - * This function supports circular references by default, but if you are certain - * there are no circular references in your object, you can save some CPU time - * by calling clone(obj, false). - * - * Caution: if `circular` is false and `parent` contains circular references, - * your program may enter an infinite loop and crash. - * - * @param `parent` - the object to be cloned - * @param `circular` - set to true if the object to be cloned may contain - * circular references. (optional - true by default) - * @param `depth` - set to a number if the object is only to be cloned to - * a particular depth. (optional - defaults to Infinity) - * @param `prototype` - sets the prototype to be used when cloning an object. - * (optional - defaults to parent prototype). -*/ -function clone(parent, circular, depth, prototype) { - var filter; - if (typeof circular === 'object') { - depth = circular.depth; - prototype = circular.prototype; - filter = circular.filter; - circular = circular.circular - } - // maintain two arrays for circular references, where corresponding parents - // and children have the same index - var allParents = []; - var allChildren = []; - - var useBuffer = typeof Buffer != 'undefined'; - - if (typeof circular == 'undefined') - circular = true; - - if (typeof depth == 'undefined') - depth = Infinity; - - // recurse this function so we don't reset allParents and allChildren - function _clone(parent, depth) { - // cloning null always returns null - if (parent === null) - return null; - - if (depth == 0) - return parent; - - var child; - var proto; - if (typeof parent != 'object') { - return parent; - } - - if (clone.__isArray(parent)) { - child = []; - } else if (clone.__isRegExp(parent)) { - child = new RegExp(parent.source, __getRegExpFlags(parent)); - if (parent.lastIndex) child.lastIndex = parent.lastIndex; - } else if (clone.__isDate(parent)) { - child = new Date(parent.getTime()); - } else if (useBuffer && Buffer.isBuffer(parent)) { - if (Buffer.allocUnsafe) { - // Node.js >= 4.5.0 - child = Buffer.allocUnsafe(parent.length); - } else { - // Older Node.js versions - child = new Buffer(parent.length); - } - parent.copy(child); - return child; - } else { - if (typeof prototype == 'undefined') { - proto = Object.getPrototypeOf(parent); - child = Object.create(proto); - } - else { - child = Object.create(prototype); - proto = prototype; - } - } - - if (circular) { - var index = allParents.indexOf(parent); - - if (index != -1) { - return allChildren[index]; - } - allParents.push(parent); - allChildren.push(child); - } - - for (var i in parent) { - var attrs; - if (proto) { - attrs = Object.getOwnPropertyDescriptor(proto, i); - } - - if (attrs && attrs.set == null) { - continue; - } - child[i] = _clone(parent[i], depth - 1); - } - - return child; - } - - return _clone(parent, depth); -} - -/** - * Simple flat clone using prototype, accepts only objects, usefull for property - * override on FLAT configuration object (no nested props). - * - * USE WITH CAUTION! This may not behave as you wish if you do not know how this - * works. - */ -clone.clonePrototype = function clonePrototype(parent) { - if (parent === null) - return null; - - var c = function () {}; - c.prototype = parent; - return new c(); -}; - -// private utility functions - -function __objToStr(o) { - return Object.prototype.toString.call(o); -}; -clone.__objToStr = __objToStr; - -function __isDate(o) { - return typeof o === 'object' && __objToStr(o) === '[object Date]'; -}; -clone.__isDate = __isDate; - -function __isArray(o) { - return typeof o === 'object' && __objToStr(o) === '[object Array]'; -}; -clone.__isArray = __isArray; - -function __isRegExp(o) { - return typeof o === 'object' && __objToStr(o) === '[object RegExp]'; -}; -clone.__isRegExp = __isRegExp; - -function __getRegExpFlags(re) { - var flags = ''; - if (re.global) flags += 'g'; - if (re.ignoreCase) flags += 'i'; - if (re.multiline) flags += 'm'; - return flags; -}; -clone.__getRegExpFlags = __getRegExpFlags; - -return clone; -})(); - -if (typeof module === 'object' && module.exports) { - module.exports = clone; -} |