Statistic Module added

modules/_baseIteratee.js

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+import identity from './identity.js';
+import isFunction from './isFunction.js';
+import isObject from './isObject.js';
+import isArray from './isArray.js';
+import matcher from './matcher.js';
+import property from './property.js';
+import optimizeCb from './_optimizeCb.js';
+
+// An internal function to generate callbacks that can be applied to each
+// element in a collection, returning the desired result — either `_.identity`,
+// an arbitrary callback, a property matcher, or a property accessor.
+export default function baseIteratee(value, context, argCount) {
+  if (value == null) return identity;
+  if (isFunction(value)) return optimizeCb(value, context, argCount);
+  if (isObject(value) && !isArray(value)) return matcher(value);
+  return property(value);
+}

modules/_cb.js

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+import _ from './underscore.js';
+import baseIteratee from './_baseIteratee.js';
+import iteratee from './iteratee.js';
+
+// The function we call internally to generate a callback. It invokes
+// `_.iteratee` if overridden, otherwise `baseIteratee`.
+export default function cb(value, context, argCount) {
+  if (_.iteratee !== iteratee) return _.iteratee(value, context);
+  return baseIteratee(value, context, argCount);
+}

modules/_collectNonEnumProps.js

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+import { nonEnumerableProps, ObjProto } from './_setup.js';
+import isFunction from './isFunction.js';
+import has from './_has.js';
+
+// Internal helper to create a simple lookup structure.
+// `collectNonEnumProps` used to depend on `_.contains`, but this led to
+// circular imports. `emulatedSet` is a one-off solution that only works for
+// arrays of strings.
+function emulatedSet(keys) {
+  var hash = {};
+  for (var l = keys.length, i = 0; i < l; ++i) hash[keys[i]] = true;
+  return {
+    contains: function(key) { return hash[key]; },
+    push: function(key) {
+      hash[key] = true;
+      return keys.push(key);
+    }
+  };
+}
+
+// Internal helper. Checks `keys` for the presence of keys in IE < 9 that won't
+// be iterated by `for key in ...` and thus missed. Extends `keys` in place if
+// needed.
+export default function collectNonEnumProps(obj, keys) {
+  keys = emulatedSet(keys);
+  var nonEnumIdx = nonEnumerableProps.length;
+  var constructor = obj.constructor;
+  var proto = isFunction(constructor) && constructor.prototype || ObjProto;
+
+  // Constructor is a special case.
+  var prop = 'constructor';
+  if (has(obj, prop) && !keys.contains(prop)) keys.push(prop);
+
+  while (nonEnumIdx--) {
+    prop = nonEnumerableProps[nonEnumIdx];
+    if (prop in obj && obj[prop] !== proto[prop] && !keys.contains(prop)) {
+      keys.push(prop);
+    }
+  }
+}

modules/_createAssigner.js

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+// An internal function for creating assigner functions.
+export default function createAssigner(keysFunc, defaults) {
+  return function(obj) {
+    var length = arguments.length;
+    if (defaults) obj = Object(obj);
+    if (length < 2 || obj == null) return obj;
+    for (var index = 1; index < length; index++) {
+      var source = arguments[index],
+          keys = keysFunc(source),
+          l = keys.length;
+      for (var i = 0; i < l; i++) {
+        var key = keys[i];
+        if (!defaults || obj[key] === void 0) obj[key] = source[key];
+      }
+    }
+    return obj;
+  };
+}

modules/_createPredicateIndexFinder.js

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+import cb from './_cb.js';
+import getLength from './_getLength.js';
+
+// Internal function to generate `_.findIndex` and `_.findLastIndex`.
+export default function createPredicateIndexFinder(dir) {
+  return function(array, predicate, context) {
+    predicate = cb(predicate, context);
+    var length = getLength(array);
+    var index = dir > 0 ? 0 : length - 1;
+    for (; index >= 0 && index < length; index += dir) {
+      if (predicate(array[index], index, array)) return index;
+    }
+    return -1;
+  };
+}

modules/_createSizePropertyCheck.js

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+import { MAX_ARRAY_INDEX } from './_setup.js';
+
+// Common internal logic for `isArrayLike` and `isBufferLike`.
+export default function createSizePropertyCheck(getSizeProperty) {
+  return function(collection) {
+    var sizeProperty = getSizeProperty(collection);
+    return typeof sizeProperty == 'number' && sizeProperty >= 0 && sizeProperty <= MAX_ARRAY_INDEX;
+  }
+}

modules/_deepGet.js

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+// Internal function to obtain a nested property in `obj` along `path`.
+export default function deepGet(obj, path) {
+  var length = path.length;
+  for (var i = 0; i < length; i++) {
+    if (obj == null) return void 0;
+    obj = obj[path[i]];
+  }
+  return length ? obj : void 0;
+}

modules/_getLength.js

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+import shallowProperty from './_shallowProperty.js';
+
+// Internal helper to obtain the `length` property of an object.
+export default shallowProperty('length');

modules/_group.js

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+import cb from './_cb.js';
+import each from './each.js';
+
+// An internal function used for aggregate "group by" operations.
+export default function group(behavior, partition) {
+  return function(obj, iteratee, context) {
+    var result = partition ? [[], []] : {};
+    iteratee = cb(iteratee, context);
+    each(obj, function(value, index) {
+      var key = iteratee(value, index, obj);
+      behavior(result, value, key);
+    });
+    return result;
+  };
+}

modules/_has.js

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+import { hasOwnProperty } from './_setup.js';
+
+// Internal function to check whether `key` is an own property name of `obj`.
+export default function has(obj, key) {
+  return obj != null && hasOwnProperty.call(obj, key);
+}

modules/_isArrayLike.js

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+import createSizePropertyCheck from './_createSizePropertyCheck.js';
+import getLength from './_getLength.js';
+
+// Internal helper for collection methods to determine whether a collection
+// should be iterated as an array or as an object.
+// Related: https://people.mozilla.org/~jorendorff/es6-draft.html#sec-tolength
+// Avoids a very nasty iOS 8 JIT bug on ARM-64. #2094
+export default createSizePropertyCheck(getLength);

modules/_optimizeCb.js

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+// Internal function that returns an efficient (for current engines) version
+// of the passed-in callback, to be repeatedly applied in other Underscore
+// functions.
+export default function optimizeCb(func, context, argCount) {
+  if (context === void 0) return func;
+  switch (argCount == null ? 3 : argCount) {
+    case 1: return function(value) {
+      return func.call(context, value);
+    };
+    // The 2-argument case is omitted because we’re not using it.
+    case 3: return function(value, index, collection) {
+      return func.call(context, value, index, collection);
+    };
+    case 4: return function(accumulator, value, index, collection) {
+      return func.call(context, accumulator, value, index, collection);
+    };
+  }
+  return function() {
+    return func.apply(context, arguments);
+  };
+}

modules/_setup.js

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+// Current version.
+export var VERSION = '1.13.0';
+
+// Establish the root object, `window` (`self`) in the browser, `global`
+// on the server, or `this` in some virtual machines. We use `self`
+// instead of `window` for `WebWorker` support.
+export var root = typeof self == 'object' && self.self === self && self ||
+          typeof global == 'object' && global.global === global && global ||
+          Function('return this')() ||
+          {};
+
+// Save bytes in the minified (but not gzipped) version:
+export var ArrayProto = Array.prototype, ObjProto = Object.prototype;
+export var SymbolProto = typeof Symbol !== 'undefined' ? Symbol.prototype : null;
+
+// Create quick reference variables for speed access to core prototypes.
+export var push = ArrayProto.push,
+    slice = ArrayProto.slice,
+    toString = ObjProto.toString,
+    hasOwnProperty = ObjProto.hasOwnProperty;
+
+// Modern feature detection.
+export var supportsArrayBuffer = typeof ArrayBuffer !== 'undefined',
+    supportsDataView = typeof DataView !== 'undefined';
+
+// All **ECMAScript 5+** native function implementations that we hope to use
+// are declared here.
+export var nativeIsArray = Array.isArray,
+    nativeKeys = Object.keys,
+    nativeCreate = Object.create,
+    nativeIsView = supportsArrayBuffer && ArrayBuffer.isView;
+
+// Create references to these builtin functions because we override them.
+export var _isNaN = isNaN,
+    _isFinite = isFinite;
+
+// Keys in IE < 9 that won't be iterated by `for key in ...` and thus missed.
+export var hasEnumBug = !{toString: null}.propertyIsEnumerable('toString');
+export var nonEnumerableProps = ['valueOf', 'isPrototypeOf', 'toString',
+  'propertyIsEnumerable', 'hasOwnProperty', 'toLocaleString'];
+
+// The largest integer that can be represented exactly.
+export var MAX_ARRAY_INDEX = Math.pow(2, 53) - 1;

modules/_shallowProperty.js

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+// Internal helper to generate a function to obtain property `key` from `obj`.
+export default function shallowProperty(key) {
+  return function(obj) {
+    return obj == null ? void 0 : obj[key];
+  };
+}

modules/_tagTester.js

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+import { toString } from './_setup.js';
+
+// Internal function for creating a `toString`-based type tester.
+export default function tagTester(name) {
+  var tag = '[object ' + name + ']';
+  return function(obj) {
+    return toString.call(obj) === tag;
+  };
+}

modules/_toPath.js

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+import _ from './underscore.js';
+import './toPath.js';
+
+// Internal wrapper for `_.toPath` to enable minification.
+// Similar to `cb` for `_.iteratee`.
+export default function toPath(path) {
+  return _.toPath(path);
+}

modules/each.js

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+import optimizeCb from './_optimizeCb.js';
+import isArrayLike from './_isArrayLike.js';
+import keys from './keys.js';
+
+// The cornerstone for collection functions, an `each`
+// implementation, aka `forEach`.
+// Handles raw objects in addition to array-likes. Treats all
+// sparse array-likes as if they were dense.
+export default function each(obj, iteratee, context) {
+  iteratee = optimizeCb(iteratee, context);
+  var i, length;
+  if (isArrayLike(obj)) {
+    for (i = 0, length = obj.length; i < length; i++) {
+      iteratee(obj[i], i, obj);
+    }
+  } else {
+    var _keys = keys(obj);
+    for (i = 0, length = _keys.length; i < length; i++) {
+      iteratee(obj[_keys[i]], _keys[i], obj);
+    }
+  }
+  return obj;
+}

modules/extendOwn.js

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+import createAssigner from './_createAssigner.js';
+import keys from './keys.js';
+
+// Assigns a given object with all the own properties in the passed-in
+// object(s).
+// (https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object/assign)
+export default createAssigner(keys);

modules/find.js

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+import isArrayLike from './_isArrayLike.js';
+import findIndex from './findIndex.js';
+import findKey from './findKey.js';
+
+// Return the first value which passes a truth test.
+export default function find(obj, predicate, context) {
+  var keyFinder = isArrayLike(obj) ? findIndex : findKey;
+  var key = keyFinder(obj, predicate, context);
+  if (key !== void 0 && key !== -1) return obj[key];
+}

modules/findIndex.js

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+import createPredicateIndexFinder from './_createPredicateIndexFinder.js';
+
+// Returns the first index on an array-like that passes a truth test.
+export default createPredicateIndexFinder(1);

modules/findKey.js

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+import cb from './_cb.js';
+import keys from './keys.js';
+
+// Returns the first key on an object that passes a truth test.
+export default function findKey(obj, predicate, context) {
+  predicate = cb(predicate, context);
+  var _keys = keys(obj), key;
+  for (var i = 0, length = _keys.length; i < length; i++) {
+    key = _keys[i];
+    if (predicate(obj[key], key, obj)) return key;
+  }
+}

modules/first.js

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+import initial from './initial.js';
+
+// Get the first element of an array. Passing **n** will return the first N
+// values in the array. The **guard** check allows it to work with `_.map`.
+export default function first(array, n, guard) {
+  if (array == null || array.length < 1) return n == null || guard ? void 0 : [];
+  if (n == null || guard) return array[0];
+  return initial(array, array.length - n);
+}

modules/groupBy.js

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+import group from './_group.js';
+import has from './_has.js';
+
+// Groups the object's values by a criterion. Pass either a string attribute
+// to group by, or a function that returns the criterion.
+export default group(function(result, value, key) {
+  if (has(result, key)) result[key].push(value); else result[key] = [value];
+});

modules/identity.js

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+// Keep the identity function around for default iteratees.
+export default function identity(value) {
+  return value;
+}

modules/index.collections.statistics.js

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+//Statistical Function
+export { default as sum } from './sum.js';
+export { default as mean } from './mean.js';
+export { default as median } from './median.js';
+export { default as standardDeviation } from './standardDeviation.js';
+export { default as variance } from './variance.js';
+export { default as mode } from './mode.js';
+export { default as standardError } from './standardError.js';
+export { default as statRange } from './statRange.js';
+export { default as percentile } from './percentile.js';

modules/initial.js

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+import { slice } from './_setup.js';
+
+// Returns everything but the last entry of the array. Especially useful on
+// the arguments object. Passing **n** will return all the values in
+// the array, excluding the last N.
+export default function initial(array, n, guard) {
+  return slice.call(array, 0, Math.max(0, array.length - (n == null || guard ? 1 : n)));
+}

modules/isArguments.js

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+import tagTester from './_tagTester.js';
+import has from './_has.js';
+
+var isArguments = tagTester('Arguments');
+
+// Define a fallback version of the method in browsers (ahem, IE < 9), where
+// there isn't any inspectable "Arguments" type.
+(function() {
+  if (!isArguments(arguments)) {
+    isArguments = function(obj) {
+      return has(obj, 'callee');
+    };
+  }
+}());
+
+export default isArguments;

modules/isArray.js

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+import { nativeIsArray } from './_setup.js';
+import tagTester from './_tagTester.js';
+
+// Is a given value an array?
+// Delegates to ECMA5's native `Array.isArray`.
+export default nativeIsArray || tagTester('Array');