swc/ecmascript/minifier/tests/projects/refs/underscore-1.5.2.js

(function (
) {
    var root = this,
        previousUnderscore = root._,
        breaker = {
        },
        ArrayProto = Array.prototype,
        ObjProto = Object.prototype,
        FuncProto = Function.prototype,
        push = ArrayProto.push,
        slice = ArrayProto.slice,
        concat = ArrayProto.concat,
        toString = ObjProto.toString,
        hasOwnProperty = ObjProto.hasOwnProperty,
        nativeForEach = ArrayProto.forEach,
        nativeMap = ArrayProto.map,
        nativeReduce = ArrayProto.reduce,
        nativeReduceRight = ArrayProto.reduceRight,
        nativeFilter = ArrayProto.filter,
        nativeEvery = ArrayProto.every,
        nativeSome = ArrayProto.some,
        nativeIndexOf = ArrayProto.indexOf,
        nativeLastIndexOf = ArrayProto.lastIndexOf,
        nativeIsArray = Array.isArray,
        nativeKeys = Object.keys,
        nativeBind = FuncProto.bind,
        _ = function (
            obj
        ) {
            return obj instanceof _
                ? obj
                : this instanceof _
                    ? void (this._wrapped = obj)
                    : new _(
                        obj
                    );
        };
    "undefined" != typeof exports
        ? ("undefined" != typeof module &&
        module.exports &&
        (exports = module.exports = _),
        (exports._ = _))
        : (root._ = _),
    (_.VERSION = "1.5.2");
    var each = (_.each = _.forEach = function (
        obj, iterator, context
    ) {
        if (null != obj)
            if (nativeForEach && obj.forEach === nativeForEach)
                obj.forEach(
                    iterator,
                    context
                );
            else if (obj.length === +obj.length) {
                for (var i = 0, length = obj.length; i < length; i++)
                    if (iterator.call(
                        context,
                        obj[i],
                        i,
                        obj
                    ) === breaker) return;
            } else {
                var keys = _.keys(
                    obj
                );
                for (i = 0, length = keys.length; i < length; i++)
                    if (iterator.call(
                        context,
                        obj[keys[i]],
                        keys[i],
                        obj
                    ) === breaker)
                        return;
            }
    });
    _.map = _.collect = function (
        obj, iterator, context
    ) {
        var results = [];
        return null == obj
            ? results
            : nativeMap && obj.map === nativeMap
                ? obj.map(
                    iterator,
                    context
                )
                : (each(
                    obj,
                    function (
                        value, index, list
                    ) {
                        results.push(
                            iterator.call(
                                context,
                                value,
                                index,
                                list
                            )
                        );
                    }
                ),
                results);
    };
    var reduceError = "Reduce of empty array with no initial value";
    (_.reduce = _.foldl = _.inject = function (
        obj, iterator, memo, context
    ) {
        var initial = arguments.length > 2;
        if (
            (null == obj && (obj = []), nativeReduce && obj.reduce === nativeReduce)
        )
            return (
                context && (iterator = _.bind(
                    iterator,
                    context
                )),
                initial
                    ? obj.reduce(
                        iterator,
                        memo
                    )
                    : obj.reduce(
                        iterator
                    )
            );
        if (
            (each(
                obj,
                function (
                    value, index, list
                ) {
                    initial
                        ? (memo = iterator.call(
                            context,
                            memo,
                            value,
                            index,
                            list
                        ))
                        : ((memo = value), (initial = !0));
                }
            ),
            !initial)
        )
            throw new TypeError(
                reduceError
            );
        return memo;
    }),
    (_.reduceRight = _.foldr = function (
        obj, iterator, memo, context
    ) {
        var initial = arguments.length > 2;
        if (
            (null == obj && (obj = []),
            nativeReduceRight && obj.reduceRight === nativeReduceRight)
        )
            return (
                context && (iterator = _.bind(
                    iterator,
                    context
                )),
                initial
                    ? obj.reduceRight(
                        iterator,
                        memo
                    )
                    : obj.reduceRight(
                        iterator
                    )
            );
        var length = obj.length;
        if (length !== +length) {
            var keys = _.keys(
                obj
            );
            length = keys.length;
        }
        if (
            (each(
                obj,
                function (
                    value, index, list
                ) {
                    (index = keys ? keys[--length] : --length),
                    initial
                        ? (memo = iterator.call(
                            context,
                            memo,
                            obj[index],
                            index,
                            list
                        ))
                        : ((memo = obj[index]), (initial = !0));
                }
            ),
            !initial)
        )
            throw new TypeError(
                reduceError
            );
        return memo;
    }),
    (_.find = _.detect = function (
        obj, iterator, context
    ) {
        var result;
        return (
            any(
                obj,
                function (
                    value, index, list
                ) {
                    if (iterator.call(
                        context,
                        value,
                        index,
                        list
                    ))
                        return (result = value), !0;
                }
            ),
            result
        );
    }),
    (_.filter = _.select = function (
        obj, iterator, context
    ) {
        var results = [];
        return null == obj
            ? results
            : nativeFilter && obj.filter === nativeFilter
                ? obj.filter(
                    iterator,
                    context
                )
                : (each(
                    obj,
                    function (
                        value, index, list
                    ) {
                        iterator.call(
                            context,
                            value,
                            index,
                            list
                        ) && results.push(
                            value
                        );
                    }
                ),
                results);
    }),
    (_.reject = function (
        obj, iterator, context
    ) {
        return _.filter(
            obj,
            function (
                value, index, list
            ) {
                return !iterator.call(
                    context,
                    value,
                    index,
                    list
                );
            },
            context,
        );
    }),
    (_.every = _.all = function (
        obj, iterator, context
    ) {
        iterator || (iterator = _.identity);
        var result = !0;
        return null == obj
            ? result
            : nativeEvery && obj.every === nativeEvery
                ? obj.every(
                    iterator,
                    context
                )
                : (each(
                    obj,
                    function (
                        value, index, list
                    ) {
                        if (
                            !(result = result && iterator.call(
                                context,
                                value,
                                index,
                                list
                            ))
                        )
                            return breaker;
                    }
                ),
                !!result);
    });
    var any = (_.some = _.any = function (
        obj, iterator, context
    ) {
        iterator || (iterator = _.identity);
        var result = !1;
        return null == obj
            ? result
            : nativeSome && obj.some === nativeSome
                ? obj.some(
                    iterator,
                    context
                )
                : (each(
                    obj,
                    function (
                        value, index, list
                    ) {
                        if (result || (result = iterator.call(
                            context,
                            value,
                            index,
                            list
                        )))
                            return breaker;
                    }
                ),
                !!result);
    });
    (_.contains = _.include = function (
        obj, target
    ) {
        return (
            null != obj &&
      (nativeIndexOf && obj.indexOf === nativeIndexOf
          ? -1 != obj.indexOf(
              target
          )
          : any(
              obj,
              function (
                  value
              ) {
                  return value === target;
              }
          ))
        );
    }),
    (_.invoke = function (
        obj, method
    ) {
        var args = slice.call(
                arguments,
                2
            ),
            isFunc = _.isFunction(
                method
            );
        return _.map(
            obj,
            function (
                value
            ) {
                return (isFunc ? method : value[method]).apply(
                    value,
                    args
                );
            }
        );
    }),
    (_.pluck = function (
        obj, key
    ) {
        return _.map(
            obj,
            function (
                value
            ) {
                return value[key];
            }
        );
    }),
    (_.where = function (
        obj, attrs, first
    ) {
        return _.isEmpty(
            attrs
        )
            ? first
                ? void 0
                : []
            : _[first ? "find" : "filter"](
                obj,
                function (
                    value
                ) {
                    for (var key in attrs) if (attrs[key] !== value[key]) return !1;
                    return !0;
                }
            );
    }),
    (_.findWhere = function (
        obj, attrs
    ) {
        return _.where(
            obj,
            attrs,
            !0
        );
    }),
    (_.max = function (
        obj, iterator, context
    ) {
        if (
            !iterator &&
        _.isArray(
            obj
        ) &&
        obj[0] === +obj[0] &&
        obj.length < 65535
        )
            return Math.max.apply(
                Math,
                obj
            );
        if (!iterator && _.isEmpty(
            obj
        )) return -1 / 0;
        var result = {
            computed: -1 / 0,
            value: -1 / 0,
        };
        return (
            each(
                obj,
                function (
                    value, index, list
                ) {
                    var computed = iterator
                        ? iterator.call(
                            context,
                            value,
                            index,
                            list
                        )
                        : value;
                    computed > result.computed &&
            (result = {
                value: value,
                computed: computed,
            });
                }
            ),
            result.value
        );
    }),
    (_.min = function (
        obj, iterator, context
    ) {
        if (
            !iterator &&
        _.isArray(
            obj
        ) &&
        obj[0] === +obj[0] &&
        obj.length < 65535
        )
            return Math.min.apply(
                Math,
                obj
            );
        if (!iterator && _.isEmpty(
            obj
        )) return 1 / 0;
        var result = {
            computed: 1 / 0,
            value: 1 / 0,
        };
        return (
            each(
                obj,
                function (
                    value, index, list
                ) {
                    var computed = iterator
                        ? iterator.call(
                            context,
                            value,
                            index,
                            list
                        )
                        : value;
                    computed < result.computed &&
            (result = {
                value: value,
                computed: computed,
            });
                }
            ),
            result.value
        );
    }),
    (_.shuffle = function (
        obj
    ) {
        var rand,
            index = 0,
            shuffled = [];
        return (
            each(
                obj,
                function (
                    value
                ) {
                    (rand = _.random(
                        index++
                    )),
                    (shuffled[index - 1] = shuffled[rand]),
                    (shuffled[rand] = value);
                }
            ),
            shuffled
        );
    }),
    (_.sample = function (
        obj, n, guard
    ) {
        return arguments.length < 2 || guard
            ? obj[_.random(
                obj.length - 1
            )]
            : _.shuffle(
                obj
            ).slice(
                0,
                Math.max(
                    0,
                    n
                )
            );
    });
    var lookupIterator = function (
        value
    ) {
        return _.isFunction(
            value
        )
            ? value
            : function (
                obj
            ) {
                return obj[value];
            };
    };
    _.sortBy = function (
        obj, value, context
    ) {
        var iterator = lookupIterator(
            value
        );
        return _.pluck(
            _.map(
                obj,
                function (
                    value, index, list
                ) {
                    return {
                        value: value,
                        index: index,
                        criteria: iterator.call(
                            context,
                            value,
                            index,
                            list
                        ),
                    };
                }
            ).sort(
                function (
                    left, right
                ) {
                    var a = left.criteria,
                        b = right.criteria;
                    if (a !== b) {
                        if (a > b || void 0 === a) return 1;
                        if (a < b || void 0 === b) return -1;
                    }
                    return left.index - right.index;
                }
            ),
            "value",
        );
    };
    var group = function (
        behavior
    ) {
        return function (
            obj, value, context
        ) {
            var result = {
                },
                iterator = null == value
                    ? _.identity
                    : lookupIterator(
                        value
                    );
            return (
                each(
                    obj,
                    function (
                        value, index
                    ) {
                        var key = iterator.call(
                            context,
                            value,
                            index,
                            obj
                        );
                        behavior(
                            result,
                            key,
                            value
                        );
                    }
                ),
                result
            );
        };
    };
    (_.groupBy = group(
        function (
            result, key, value
        ) {
            (_.has(
                result,
                key
            )
                ? result[key]
                : (result[key] = [])).push(
                value
            );
        }
    )),
    (_.indexBy = group(
        function (
            result, key, value
        ) {
            result[key] = value;
        }
    )),
    (_.countBy = group(
        function (
            result, key
        ) {
            _.has(
                result,
                key
            )
                ? result[key]++
                : (result[key] = 1);
        }
    )),
    (_.sortedIndex = function (
        array, obj, iterator, context
    ) {
        for (
            var value = (iterator =
            null == iterator
                ? _.identity
                : lookupIterator(
                    iterator
                )).call(
                    context,
                    obj,
                ),
                low = 0,
                high = array.length;
            low < high;

        ) {
            var mid = (low + high) >>> 1;
            iterator.call(
                context,
                array[mid]
            ) < value
                ? (low = mid + 1)
                : (high = mid);
        }
        return low;
    }),
    (_.toArray = function (
        obj
    ) {
        return obj
            ? _.isArray(
                obj
            )
                ? slice.call(
                    obj
                )
                : obj.length === +obj.length
                    ? _.map(
                        obj,
                        _.identity
                    )
                    : _.values(
                        obj
                    )
            : [];
    }),
    (_.size = function (
        obj
    ) {
        return null == obj
            ? 0
            : obj.length === +obj.length
                ? obj.length
                : _.keys(
                    obj
                ).length;
    }),
    (_.first = _.head = _.take = function (
        array, n, guard
    ) {
        if (null != array)
            return null == n || guard
                ? array[0]
                : slice.call(
                    array,
                    0,
                    n
                );
    }),
    (_.initial = function (
        array, n, guard
    ) {
        return slice.call(
            array,
            0,
            array.length - (null == n || guard ? 1 : n)
        );
    }),
    (_.last = function (
        array, n, guard
    ) {
        if (null != array)
            return null == n || guard
                ? array[array.length - 1]
                : slice.call(
                    array,
                    Math.max(
                        array.length - n,
                        0
                    )
                );
    }),
    (_.rest = _.tail = _.drop = function (
        array, n, guard
    ) {
        return slice.call(
            array,
            null == n || guard ? 1 : n
        );
    }),
    (_.compact = function (
        array
    ) {
        return _.filter(
            array,
            _.identity
        );
    });
    var flatten = function (
        input, shallow, output
    ) {
        return shallow && _.every(
            input,
            _.isArray
        )
            ? concat.apply(
                output,
                input
            )
            : (each(
                input,
                function (
                    value
                ) {
                    _.isArray(
                        value
                    ) || _.isArguments(
                        value
                    )
                        ? shallow
                            ? push.apply(
                                output,
                                value
                            )
                            : flatten(
                                value,
                                shallow,
                                output
                            )
                        : output.push(
                            value
                        );
                }
            ),
            output);
    };
    (_.flatten = function (
        array, shallow
    ) {
        return flatten(
            array,
            shallow,
            []
        );
    }),
    (_.without = function (
        array
    ) {
        return _.difference(
            array,
            slice.call(
                arguments,
                1
            )
        );
    }),
    (_.uniq = _.unique = function (
        array, isSorted, iterator, context
    ) {
        _.isFunction(
            isSorted
        ) &&
        ((context = iterator), (iterator = isSorted), (isSorted = !1));
        var initial = iterator
                ? _.map(
                    array,
                    iterator,
                    context
                )
                : array,
            results = [],
            seen = [];
        return (
            each(
                initial,
                function (
                    value, index
                ) {
                    (isSorted
                        ? index && seen[seen.length - 1] === value
                        : _.contains(
                            seen,
                            value
                        )) ||
            (seen.push(
                value
            ), results.push(
                array[index]
            ));
                }
            ),
            results
        );
    }),
    (_.union = function (
    ) {
        return _.uniq(
            _.flatten(
                arguments,
                !0
            )
        );
    }),
    (_.intersection = function (
        array
    ) {
        var rest = slice.call(
            arguments,
            1
        );
        return _.filter(
            _.uniq(
                array
            ),
            function (
                item
            ) {
                return _.every(
                    rest,
                    function (
                        other
                    ) {
                        return _.indexOf(
                            other,
                            item
                        ) >= 0;
                    }
                );
            }
        );
    }),
    (_.difference = function (
        array
    ) {
        var rest = concat.apply(
            ArrayProto,
            slice.call(
                arguments,
                1
            )
        );
        return _.filter(
            array,
            function (
                value
            ) {
                return !_.contains(
                    rest,
                    value
                );
            }
        );
    }),
    (_.zip = function (
    ) {
        for (
            var length = _.max(
                    _.pluck(
                        arguments,
                        "length"
                    ).concat(
                        0
                    )
                ),
                results = new Array(
                    length
                ),
                i = 0;
            i < length;
            i++
        )
            results[i] = _.pluck(
                arguments,
                "" + i
            );
        return results;
    }),
    (_.object = function (
        list, values
    ) {
        if (null == list) return {
        };
        for (var result = {
            }, i = 0, length = list.length; i < length; i++)
            values
                ? (result[list[i]] = values[i])
                : (result[list[i][0]] = list[i][1]);
        return result;
    }),
    (_.indexOf = function (
        array, item, isSorted
    ) {
        if (null == array) return -1;
        var i = 0,
            length = array.length;
        if (isSorted) {
            if ("number" != typeof isSorted)
                return array[(i = _.sortedIndex(
                    array,
                    item
                ))] === item
                    ? i
                    : -1;
            i = isSorted < 0
                ? Math.max(
                    0,
                    length + isSorted
                )
                : isSorted;
        }
        if (nativeIndexOf && array.indexOf === nativeIndexOf)
            return array.indexOf(
                item,
                isSorted
            );
        for (; i < length; i++) if (array[i] === item) return i;
        return -1;
    }),
    (_.lastIndexOf = function (
        array, item, from
    ) {
        if (null == array) return -1;
        var hasIndex = null != from;
        if (nativeLastIndexOf && array.lastIndexOf === nativeLastIndexOf)
            return hasIndex
                ? array.lastIndexOf(
                    item,
                    from
                )
                : array.lastIndexOf(
                    item
                );
        for (var i = hasIndex ? from : array.length; i--; )
            if (array[i] === item) return i;
        return -1;
    }),
    (_.range = function (
        start, stop, step
    ) {
        arguments.length <= 1 && ((stop = start || 0), (start = 0)),
        (step = arguments[2] || 1);
        for (
            var length = Math.max(
                    Math.ceil(
                        (stop - start) / step
                    ),
                    0
                ),
                idx = 0,
                range = new Array(
                    length
                );
            idx < length;

        )
            (range[idx++] = start), (start += step);
        return range;
    });
    var ctor = function (
    ) {};
    (_.bind = function (
        func, context
    ) {
        var args, bound;
        if (nativeBind && func.bind === nativeBind)
            return nativeBind.apply(
                func,
                slice.call(
                    arguments,
                    1
                )
            );
        if (!_.isFunction(
            func
        )) throw new TypeError(
        );
        return (
            (args = slice.call(
                arguments,
                2
            )),
            (bound = function (
            ) {
                if (!(this instanceof bound))
                    return func.apply(
                        context,
                        args.concat(
                            slice.call(
                                arguments
                            )
                        )
                    );
                ctor.prototype = func.prototype;
                var self = new ctor(
                );
                ctor.prototype = null;
                var result = func.apply(
                    self,
                    args.concat(
                        slice.call(
                            arguments
                        )
                    )
                );
                return Object(
                    result
                ) === result
                    ? result
                    : self;
            })
        );
    }),
    (_.partial = function (
        func
    ) {
        var args = slice.call(
            arguments,
            1
        );
        return function (
        ) {
            return func.apply(
                this,
                args.concat(
                    slice.call(
                        arguments
                    )
                )
            );
        };
    }),
    (_.bindAll = function (
        obj
    ) {
        var funcs = slice.call(
            arguments,
            1
        );
        if (0 === funcs.length)
            throw new Error(
                "bindAll must be passed function names"
            );
        return (
            each(
                funcs,
                function (
                    f
                ) {
                    obj[f] = _.bind(
                        obj[f],
                        obj
                    );
                }
            ),
            obj
        );
    }),
    (_.memoize = function (
        func, hasher
    ) {
        var memo = {
        };
        return (
            hasher || (hasher = _.identity),
            function (
            ) {
                var key = hasher.apply(
                    this,
                    arguments
                );
                return _.has(
                    memo,
                    key
                )
                    ? memo[key]
                    : (memo[key] = func.apply(
                        this,
                        arguments
                    ));
            }
        );
    }),
    (_.delay = function (
        func, wait
    ) {
        var args = slice.call(
            arguments,
            2
        );
        return setTimeout(
            function (
            ) {
                return func.apply(
                    null,
                    args
                );
            },
            wait
        );
    }),
    (_.defer = function (
        func
    ) {
        return _.delay.apply(
            _,
            [func, 1,].concat(
                slice.call(
                    arguments,
                    1
                )
            )
        );
    }),
    (_.throttle = function (
        func, wait, options
    ) {
        var context,
            args,
            result,
            timeout = null,
            previous = 0;
        options || (options = {
        });
        var later = function (
        ) {
            (previous = !1 === options.leading
                ? 0
                : new Date(
                )),
            (timeout = null),
            (result = func.apply(
                context,
                args
            ));
        };
        return function (
        ) {
            var now = new Date(
            );
            previous || !1 !== options.leading || (previous = now);
            var remaining = wait - (now - previous);
            return (
                (context = this),
                (args = arguments),
                remaining <= 0
                    ? (clearTimeout(
                        timeout
                    ),
                    (timeout = null),
                    (previous = now),
                    (result = func.apply(
                        context,
                        args
                    )))
                    : timeout ||
              !1 === options.trailing ||
              (timeout = setTimeout(
                  later,
                  remaining
              )),
                result
            );
        };
    }),
    (_.debounce = function (
        func, wait, immediate
    ) {
        var timeout, args, context, timestamp, result;
        return function (
        ) {
            (context = this), (args = arguments), (timestamp = new Date(
            ));
            var later = function (
                ) {
                    var last = new Date(
                    ) - timestamp;
                    last < wait
                        ? (timeout = setTimeout(
                            later,
                            wait - last
                        ))
                        : ((timeout = null),
                        immediate || (result = func.apply(
                            context,
                            args
                        )));
                },
                callNow = immediate && !timeout;
            return (
                timeout || (timeout = setTimeout(
                    later,
                    wait
                )),
                callNow && (result = func.apply(
                    context,
                    args
                )),
                result
            );
        };
    }),
    (_.once = function (
        func
    ) {
        var memo,
            ran = !1;
        return function (
        ) {
            return (
                ran ||
            ((ran = !0), (memo = func.apply(
                this,
                arguments
            )), (func = null)),
                memo
            );
        };
    }),
    (_.wrap = function (
        func, wrapper
    ) {
        return function (
        ) {
            var args = [func,];
            return push.apply(
                args,
                arguments
            ), wrapper.apply(
                this,
                args
            );
        };
    }),
    (_.compose = function (
    ) {
        var funcs = arguments;
        return function (
        ) {
            for (var args = arguments, i = funcs.length - 1; i >= 0; i--)
                args = [funcs[i].apply(
                    this,
                    args
                ),];
            return args[0];
        };
    }),
    (_.after = function (
        times, func
    ) {
        return function (
        ) {
            if (--times < 1) return func.apply(
                this,
                arguments
            );
        };
    }),
    (_.keys =
      nativeKeys ||
      function (
          obj
      ) {
          if (obj !== Object(
              obj
          )) throw new TypeError(
              "Invalid object"
          );
          var keys = [];
          for (var key in obj) _.has(
              obj,
              key
          ) && keys.push(
              key
          );
          return keys;
      }),
    (_.values = function (
        obj
    ) {
        for (
            var keys = _.keys(
                    obj
                ),
                length = keys.length,
                values = new Array(
                    length
                ),
                i = 0;
            i < length;
            i++
        )
            values[i] = obj[keys[i]];
        return values;
    }),
    (_.pairs = function (
        obj
    ) {
        for (
            var keys = _.keys(
                    obj
                ),
                length = keys.length,
                pairs = new Array(
                    length
                ),
                i = 0;
            i < length;
            i++
        )
            pairs[i] = [keys[i], obj[keys[i]],];
        return pairs;
    }),
    (_.invert = function (
        obj
    ) {
        for (
            var result = {
                }, keys = _.keys(
                    obj
                ), i = 0, length = keys.length;
            i < length;
            i++
        )
            result[obj[keys[i]]] = keys[i];
        return result;
    }),
    (_.functions = _.methods = function (
        obj
    ) {
        var names = [];
        for (var key in obj) _.isFunction(
            obj[key]
        ) && names.push(
            key
        );
        return names.sort(
        );
    }),
    (_.extend = function (
        obj
    ) {
        return (
            each(
                slice.call(
                    arguments,
                    1
                ),
                function (
                    source
                ) {
                    if (source) for (var prop in source) obj[prop] = source[prop];
                }
            ),
            obj
        );
    }),
    (_.pick = function (
        obj
    ) {
        var copy = {
            },
            keys = concat.apply(
                ArrayProto,
                slice.call(
                    arguments,
                    1
                )
            );
        return (
            each(
                keys,
                function (
                    key
                ) {
                    key in obj && (copy[key] = obj[key]);
                }
            ),
            copy
        );
    }),
    (_.omit = function (
        obj
    ) {
        var copy = {
            },
            keys = concat.apply(
                ArrayProto,
                slice.call(
                    arguments,
                    1
                )
            );
        for (var key in obj) _.contains(
            keys,
            key
        ) || (copy[key] = obj[key]);
        return copy;
    }),
    (_.defaults = function (
        obj
    ) {
        return (
            each(
                slice.call(
                    arguments,
                    1
                ),
                function (
                    source
                ) {
                    if (source)
                        for (var prop in source)
                            void 0 === obj[prop] && (obj[prop] = source[prop]);
                }
            ),
            obj
        );
    }),
    (_.clone = function (
        obj
    ) {
        return _.isObject(
            obj
        )
            ? _.isArray(
                obj
            )
                ? obj.slice(
                )
                : _.extend(
                    {
                    },
                    obj
                )
            : obj;
    }),
    (_.tap = function (
        obj, interceptor
    ) {
        return interceptor(
            obj
        ), obj;
    });
    var eq = function (
        a, b, aStack, bStack
    ) {
        if (a === b) return 0 !== a || 1 / a == 1 / b;
        if (null == a || null == b) return a === b;
        a instanceof _ && (a = a._wrapped), b instanceof _ && (b = b._wrapped);
        var className = toString.call(
            a
        );
        if (className != toString.call(
            b
        )) return !1;
        switch (className) {
        case "[object String]":
            return a == String(
                b
            );
        case "[object Number]":
            return a != +a ? b != +b : 0 == a ? 1 / a == 1 / b : a == +b;
        case "[object Date]":
        case "[object Boolean]":
            return +a == +b;
        case "[object RegExp]":
            return (
                a.source == b.source &&
          a.global == b.global &&
          a.multiline == b.multiline &&
          a.ignoreCase == b.ignoreCase
            );
        }
        if ("object" != typeof a || "object" != typeof b) return !1;
        for (var length = aStack.length; length--; )
            if (aStack[length] == a) return bStack[length] == b;
        var aCtor = a.constructor,
            bCtor = b.constructor;
        if (
            aCtor !== bCtor &&
      !(
          _.isFunction(
              aCtor
          ) &&
        aCtor instanceof aCtor &&
        _.isFunction(
            bCtor
        ) &&
        bCtor instanceof bCtor
      )
        )
            return !1;
        aStack.push(
            a
        ), bStack.push(
            b
        );
        var size = 0,
            result = !0;
        if ("[object Array]" == className) {
            if ((result = (size = a.length) == b.length))
                for (; size-- && (result = eq(
                    a[size],
                    b[size],
                    aStack,
                    bStack
                )); );
        } else {
            for (var key in a)
                if (
                    _.has(
                        a,
                        key
                    ) &&
          (size++,
          !(result = _.has(
              b,
              key
          ) && eq(
              a[key],
              b[key],
              aStack,
              bStack
          )))
                )
                    break;
            if (result) {
                for (key in b) if (_.has(
                    b,
                    key
                ) && !size--) break;
                result = !size;
            }
        }
        return aStack.pop(
        ), bStack.pop(
        ), result;
    };
    (_.isEqual = function (
        a, b
    ) {
        return eq(
            a,
            b,
            [],
            []
        );
    }),
    (_.isEmpty = function (
        obj
    ) {
        if (null == obj) return !0;
        if (_.isArray(
            obj
        ) || _.isString(
            obj
        )) return 0 === obj.length;
        for (var key in obj) if (_.has(
            obj,
            key
        )) return !1;
        return !0;
    }),
    (_.isElement = function (
        obj
    ) {
        return !(!obj || 1 !== obj.nodeType);
    }),
    (_.isArray =
      nativeIsArray ||
      function (
          obj
      ) {
          return "[object Array]" == toString.call(
              obj
          );
      }),
    (_.isObject = function (
        obj
    ) {
        return obj === Object(
            obj
        );
    }),
    each(
        ["Arguments", "Function", "String", "Number", "Date", "RegExp",],
        function (
            name
        ) {
            _["is" + name] = function (
                obj
            ) {
                return toString.call(
                    obj
                ) == "[object " + name + "]";
            };
        },
    ),
    _.isArguments(
        arguments
    ) ||
      (_.isArguments = function (
          obj
      ) {
          return !(!obj || !_.has(
              obj,
              "callee"
          ));
      }),
    "function" != typeof /./ &&
      (_.isFunction = function (
          obj
      ) {
          return "function" == typeof obj;
      }),
    (_.isFinite = function (
        obj
    ) {
        return isFinite(
            obj
        ) && !isNaN(
            parseFloat(
                obj
            )
        );
    }),
    (_.isNaN = function (
        obj
    ) {
        return _.isNumber(
            obj
        ) && obj != +obj;
    }),
    (_.isBoolean = function (
        obj
    ) {
        return (
            !0 === obj || !1 === obj || "[object Boolean]" == toString.call(
                obj
            )
        );
    }),
    (_.isNull = function (
        obj
    ) {
        return null === obj;
    }),
    (_.isUndefined = function (
        obj
    ) {
        return void 0 === obj;
    }),
    (_.has = function (
        obj, key
    ) {
        return hasOwnProperty.call(
            obj,
            key
        );
    }),
    (_.noConflict = function (
    ) {
        return (root._ = previousUnderscore), this;
    }),
    (_.identity = function (
        value
    ) {
        return value;
    }),
    (_.times = function (
        n, iterator, context
    ) {
        for (var accum = Array(
                Math.max(
                    0,
                    n
                )
            ), i = 0; i < n; i++)
            accum[i] = iterator.call(
                context,
                i
            );
        return accum;
    }),
    (_.random = function (
        min, max
    ) {
        return (
            null == max && ((max = min), (min = 0)),
            min + Math.floor(
                Math.random(
                ) * (max - min + 1)
            )
        );
    });
    var entityMap = {
        escape: {
            "&": "&amp;",
            "<": "&lt;",
            ">": "&gt;",
            '"': "&quot;",
            "'": "&#x27;",
        },
    };
    entityMap.unescape = _.invert(
        entityMap.escape
    );
    var entityRegexes = {
        escape: new RegExp(
            "[" + _.keys(
                entityMap.escape
            ).join(
                ""
            ) + "]",
            "g"
        ),
        unescape: new RegExp(
            "(" + _.keys(
                entityMap.unescape
            ).join(
                "|"
            ) + ")",
            "g"
        ),
    };
    _.each(
        ["escape", "unescape",],
        function (
            method
        ) {
            _[method] = function (
                string
            ) {
                return null == string
                    ? ""
                    : ("" + string).replace(
                        entityRegexes[method],
                        function (
                            match
                        ) {
                            return entityMap[method][match];
                        }
                    );
            };
        }
    ),
    (_.result = function (
        object, property
    ) {
        if (null != object) {
            var value = object[property];
            return _.isFunction(
                value
            )
                ? value.call(
                    object
                )
                : value;
        }
    }),
    (_.mixin = function (
        obj
    ) {
        each(
            _.functions(
                obj
            ),
            function (
                name
            ) {
                var func = (_[name] = obj[name]);
                _.prototype[name] = function (
                ) {
                    var args = [this._wrapped,];
                    return (
                        push.apply(
                            args,
                            arguments
                        ), result.call(
                            this,
                            func.apply(
                                _,
                                args
                            )
                        )
                    );
                };
            }
        );
    });
    var idCounter = 0;
    (_.uniqueId = function (
        prefix
    ) {
        var id = ++idCounter + "";
        return prefix ? prefix + id : id;
    }),
    (_.templateSettings = {
        evaluate: /<%([\s\S]+?)%>/g,
        interpolate: /<%=([\s\S]+?)%>/g,
        escape: /<%-([\s\S]+?)%>/g,
    });
    var noMatch = /(.)^/,
        escapes = {
            "'": "'",
            "\\": "\\",
            "\r": "r",
            "\n": "n",
            "\t": "t",
            "\u2028": "u2028",
            "\u2029": "u2029",
        },
        escaper = /\\|'|\r|\n|\t|\u2028|\u2029/g;
    (_.template = function (
        text, data, settings
    ) {
        var render;
        settings = _.defaults(
            {
            },
            settings,
            _.templateSettings
        );
        var matcher = new RegExp(
                [
                    (settings.escape || noMatch).source,
                    (settings.interpolate || noMatch).source,
                    (settings.evaluate || noMatch).source,
                ].join(
                    "|"
                ) + "|$",
                "g",
            ),
            index = 0,
            source = "__p+='";
        text.replace(
            matcher,
            function (
                match, escape, interpolate, evaluate, offset
            ) {
                return (
                    (source += text
                        .slice(
                            index,
                            offset
                        )
                        .replace(
                            escaper,
                            function (
                                match
                            ) {
                                return "\\" + escapes[match];
                            }
                        )),
                    escape &&
            (source +=
              "'+\n((__t=(" + escape + "))==null?'':_.escape(__t))+\n'"),
                    interpolate &&
            (source += "'+\n((__t=(" + interpolate + "))==null?'':__t)+\n'"),
                    evaluate && (source += "';\n" + evaluate + "\n__p+='"),
                    (index = offset + match.length),
                    match
                );
            },
        ),
        (source += "';\n"),
        settings.variable || (source = "with(obj||{}){\n" + source + "}\n"),
        (source =
        "var __t,__p='',__j=Array.prototype.join,print=function(){__p+=__j.call(arguments,'');};\n" +
        source +
        "return __p;\n");
        try {
            render = new Function(
                settings.variable || "obj",
                "_",
                source
            );
        } catch (e) {
            throw ((e.source = source), e);
        }
        if (data) return render(
            data,
            _
        );
        var template = function (
            data
        ) {
            return render.call(
                this,
                data,
                _
            );
        };
        return (
            (template.source =
        "function(" + (settings.variable || "obj") + "){\n" + source + "}"),
            template
        );
    }),
    (_.chain = function (
        obj
    ) {
        return _(
            obj
        ).chain(
        );
    });
    var result = function (
        obj
    ) {
        return this._chain
            ? _(
                obj
            ).chain(
            )
            : obj;
    };
    _.mixin(
        _
    ),
    each(
        ["pop", "push", "reverse", "shift", "sort", "splice", "unshift",],
        function (
            name
        ) {
            var method = ArrayProto[name];
            _.prototype[name] = function (
            ) {
                var obj = this._wrapped;
                return (
                    method.apply(
                        obj,
                        arguments
                    ),
                    ("shift" != name && "splice" != name) ||
              0 !== obj.length ||
              delete obj[0],
                    result.call(
                        this,
                        obj
                    )
                );
            };
        },
    ),
    each(
        ["concat", "join", "slice",],
        function (
            name
        ) {
            var method = ArrayProto[name];
            _.prototype[name] = function (
            ) {
                return result.call(
                    this,
                    method.apply(
                        this._wrapped,
                        arguments
                    )
                );
            };
        }
    ),
    _.extend(
        _.prototype,
        {
            chain: function (
            ) {
                return (this._chain = !0), this;
            },
            value: function (
            ) {
                return this._wrapped;
            },
        }
    );
}.call(
    this
));