From bea5c5c38c029c17645054d98c99920e98a1701a Mon Sep 17 00:00:00 2001
From: John Pelley <jryanp@yahoo.com>
Date: Mon, 11 Sep 2017 03:55:56 -0700
Subject: [PATCH 1/9] did extra credit

---
 src/arrays.js | 26 +++++++++++++++++++++++---
 1 file changed, 23 insertions(+), 3 deletions(-)

diff --git a/src/arrays.js b/src/arrays.js
index b995952..4fbf428 100644
--- a/src/arrays.js
+++ b/src/arrays.js
@@ -2,7 +2,7 @@
 // These functions only need to work with arrays.
 // Do NOT use the built in array methods to solve these. forEach, map, reduce, filter, includes, etc.
 // You CAN use concat, push, pop, etc. but do not use the exact method that you are replicating
-// You can use the functions that you have already written to help solve the other problems
+// You can use the functions that you have already written for the other problems
 
 const each = (elements, cb) => {
   // Iterates over a list of elements, yielding each in turn to the `cb` function.
@@ -30,13 +30,33 @@ const find = (elements, cb) => {
 const filter = (elements, cb) => {
   // Similar to `find` but you will return an array of all elements that passed the truth test
   // Return an empty array if no elements pass the truth test
+  // elements.filter = function (collection, test) {
+  // const filtered = [];
+  // elements.each(collection, function (item)) {
+  // if (test(item)) {
+  // filtered.push(item);
+  // }
+  // });
+  // return filtered;
+  // };
 };
 
 /* Extra Credit */
+// Flattens a nested array (the nesting can be to any depth).
+// Example: flatten([1, [2], [3, [[4]]]]); => [1, 2, 3, 4];
 const flatten = (elements) => {
-  // Flattens a nested array (the nesting can be to any depth).
-  // Example: flatten([1, [2], [3, [[4]]]]); => [1, 2, 3, 4];
+  let ret = [];
+  for (let i = 0; i < elements.length; i++) {
+    if (Array.isArray(elements[i])) {
+      ret = ret.concat(flatten(elements[i]));
+    } else {
+      ret.push(elements[i]);
+    }
+  }
+  return ret;
 };
+flatten([[[[[0]], [1]], [[[2], [3]]], [[4], [5]]]]);
+
 
 /* eslint-enable no-unused-vars, max-len */
 

From 77a6eaa58e38b2f68abc54d499afe5eef123aa75 Mon Sep 17 00:00:00 2001
From: John Pelley <jryanp@yahoo.com>
Date: Wed, 20 Sep 2017 06:18:26 -0700
Subject: [PATCH 2/9] passed 27 tests

---
 src/arrays.js    | 27 ++++++++++++++++-----------
 src/class.js     | 13 +++++++++++++
 src/closure.js   | 17 +++++++++++++++++
 src/objects.js   | 23 +++++++++++++++++++++++
 src/recursion.js | 37 ++++++++++++++++++++++++++++++++++---
 5 files changed, 103 insertions(+), 14 deletions(-)

diff --git a/src/arrays.js b/src/arrays.js
index 4fbf428..e619c6a 100644
--- a/src/arrays.js
+++ b/src/arrays.js
@@ -8,11 +8,20 @@ const each = (elements, cb) => {
   // Iterates over a list of elements, yielding each in turn to the `cb` function.
   // This only needs to work with arrays.
   // based off http://underscorejs.org/#each
+  for (let i = 0; i < elements.length; i++) {
+    cb(elements[i], i);
+  }
 };
-
+// each([1, 2, 3]), (item, index) =>{
+  // console.log(`${item} @ ${index}`)
 const map = (elements, cb) => {
   // Produces a new array of values by mapping each value in list through a transformation function (iteratee).
   // Return the new array.
+  const newArray = [];
+  each(elements, (item, index) => {
+    newArray.push(cb(item, index));
+  });
+  return newArray;
 };
 
 const reduce = (elements, cb, memo = elements.shift()) => {
@@ -27,18 +36,14 @@ const find = (elements, cb) => {
   // Return `undefined` if no elements pass the truth test.
 };
 
-const filter = (elements, cb) => {
+const filter = (elements, test, cb) => {
   // Similar to `find` but you will return an array of all elements that passed the truth test
   // Return an empty array if no elements pass the truth test
-  // elements.filter = function (collection, test) {
-  // const filtered = [];
-  // elements.each(collection, function (item)) {
-  // if (test(item)) {
-  // filtered.push(item);
-  // }
-  // });
-  // return filtered;
-  // };
+    // define an empty array
+    // for each item in the collection array
+      // if the item passed in the function returns true
+        // push the item into the defined array
+    // return the defined array
 };
 
 /* Extra Credit */
diff --git a/src/class.js b/src/class.js
index 8276e29..0390bfb 100644
--- a/src/class.js
+++ b/src/class.js
@@ -15,10 +15,23 @@
 // Animal and Cat should both have a parameter called `options` in their constructors.
 // Animal should have the property `age` that's set in the constructor and the method
 // `growOlder` that returns the age.
+
 // Cat should have the property `name` that is set in the constructor and the method
 // `meow` that should return the string `<name> meowed!` where `<name>` is the `name`
 // property set on the Cat instance.
 
+/* class Animal {
+  constructor(options) {
+    this.name = options.name;
+    this.age = options.age;
+    this.say = (`${name}' meowed!`);
+  }
+  growOlder() {
+    return this.age;
+  }
+}
+const Cat = new Animal();
+this.name = options.name; */
 
 module.exports = {
   User,
diff --git a/src/closure.js b/src/closure.js
index 2d6592f..c402ad3 100644
--- a/src/closure.js
+++ b/src/closure.js
@@ -5,17 +5,27 @@ const counter = () => {
   // Example: const newCounter = counter();
   // newCounter(); // 1
   // newCounter(); // 2
+  let count = 0;
+  return () => {
+    return ++count;
+  };
 };
 
 const counterFactory = () => {
   // Return an object that has two methods called `increment` and `decrement`.
   // `increment` should increment a counter variable in closure scope and return it.
   // `decrement` should decrement the counter variable and return it.
+  let count = 0;
+  return {
+    increment: () => { return ++count; },
+    decrement: () => { return --count; },
+  };
 };
 
 const limitFunctionCallCount = (cb, n) => {
   // Should return a function that invokes `cb`.
   // The returned function should only allow `cb` to be invoked `n` times.
+
 };
 
 /* Extra Credit */
@@ -26,6 +36,13 @@ const cacheFunction = (cb) => {
   // If the returned function is invoked with arguments that it has already seen
   // then it should return the cached result and not invoke `cb` again.
   // `cb` should only ever be invoked once for a given set of arguments.
+  const cache = {};
+  return (input) => {
+    // if input is already cached, don't do it
+    if (Object.prototype.hasOwnProperty.call(cache, input)) return cache[input];
+    cache[input] = cb(input);
+    return cache[input];
+  };
 };
 
 /* eslint-enable no-unused-vars */
diff --git a/src/objects.js b/src/objects.js
index ba39c6c..e7670bc 100644
--- a/src/objects.js
+++ b/src/objects.js
@@ -1,32 +1,55 @@
 // Complete the following underscore functions.
 // Reference http://underscorejs.org/ for examples.
 
+const each = (elements, cb) => {
+  // Iterates over a list of elements, yielding each in turn to the 'cb' function.
+  // This only needs to work with arrays.
+  // based off http://underscorejs.org/#each
+  for (let i = 0; i < elements.length; i++) {
+    cb(elements[i], i);
+  }
+};
+
 const keys = (obj) => {
   // Retrieve all the names of the object's properties.
   // Return the keys as strings in an array.
   // Based on http://underscorejs.org/#keys
+  const newObj = Object.keys(obj);
+  return newObj;
+  // Ryan going over these in today video Sept 11 copy then delete this comment
 };
 
 const values = (obj) => {
   // Return all of the values of the object's own properties.
   // Ignore functions
   // http://underscorejs.org/#values
+  const newObj = Object.keys(obj);
+  return Object.keys(obj);
 };
 
 const mapObject = (obj, cb) => {
   // Like map for arrays, but for objects. Transform the value of each property in turn.
   // http://underscorejs.org/#mapObject
+  const arrayOfKeys = Object.keys(obj);
+  each(arrayOfKeys, (key) => {
+    obj[key] = cb(obj[key]);
+  });
+  return obj;
 };
 
 const pairs = (obj) => {
   // Convert an object into a list of [key, value] pairs.
   // http://underscorejs.org/#pairs
+  const newObj = Object.pairs(obj);
+  return newObj;
 };
 
 const invert = (obj) => {
   // Returns a copy of the object where the keys have become the values and the values the keys.
   // Assume that all of the object's values will be unique and string serializable.
   // http://underscorejs.org/#invert
+  const newObj = Object.invert(obj);
+  return Object.invert(obj);
 };
 
 const defaults = (obj, defaultProps) => {
diff --git a/src/recursion.js b/src/recursion.js
index eb65c57..717686a 100644
--- a/src/recursion.js
+++ b/src/recursion.js
@@ -3,19 +3,50 @@
 const nFibonacci = (n) => {
   // fibonacci sequence: 1 2 3 5 8 13 ...
   // return the nth number in the sequence
+  if (n < 2) {
+    return 1;
+  } return nFibonacci(n - 2) + nFibonacci(n - 1);
 };
 
 const nFactorial = (n) => {
-  // factorial example: !5 = 5 * 4 * 3 * 2 * 1
-  // return the factorial of `n`
+  if (n === 0) {
+    return 1;
+  }
+  if (n < 0) {
+    return undefined;
+  }
+  for (let i = n; --i;) {
+    n *= i;
+  }
+  return n;
 };
 
 /* Extra Credit */
 const checkMatchingLeaves = (obj) => {
   // return true if every property on `obj` is the same
   // otherwise return false
+  let leaf = '';
+  let leavesMatch = true;
+  const checkForMatches = (tree) => {
+    Object.keys(tree).forEach((key) => {
+      if (leaf === '' && typeof key !== 'object') {
+        leaf = tree[key];
+        return undefined;
+      }
+      if (typeof tree[key] === 'object') {
+        return checkForMatches(tree[key]);
+      }
+      if (tree[key] !== leaf) {
+        leavesMatch = false;
+        return undefined;
+      }
+      return undefined;
+    });
+  };
+  checkForMatches(obj);
+  return leavesMatch;
 };
-
+checkMatchingLeaves({ a: 1, b: 1, c: { ca: 1, } });
 /* eslint-enable no-unused-vars */
 
 module.exports = {

From 84280e440321581b7901fc822cb8dc0882cda53d Mon Sep 17 00:00:00 2001
From: John Pelley <jryanp@yahoo.com>
Date: Thu, 21 Sep 2017 08:22:08 -0700
Subject: [PATCH 3/9] passed 34 tests

---
 src/arrays.js  | 19 +++++++++++++++++++
 src/closure.js | 25 ++++++++++++++++++++++++-
 src/objects.js |  6 +-----
 3 files changed, 44 insertions(+), 6 deletions(-)

diff --git a/src/arrays.js b/src/arrays.js
index e619c6a..3e9f9a0 100644
--- a/src/arrays.js
+++ b/src/arrays.js
@@ -28,8 +28,20 @@ const reduce = (elements, cb, memo = elements.shift()) => {
   // Combine all elements into a single value going from left to right.
   // Elements will be passed one by one into `cb`.
   // `memo` is the starting value.  If `memo` is undefined then make `elements[0]` the initial value.
+  let considerFirst = true;
+  if (arguments.length < 3) {
+    memo = elements[0];
+    considerFirst = false;
+  }
+  each(elements, (element, index) => {
+    if (index > 0 || considerFirst) {
+      memo = cb(memo, element, index, elements);
+    }
+  });
+  return memo;
 };
 
+
 const find = (elements, cb) => {
   // Look through each value in `elements` and pass each element to `cb`.
   // If `cb` returns `true` then return that element.
@@ -44,6 +56,13 @@ const filter = (elements, test, cb) => {
       // if the item passed in the function returns true
         // push the item into the defined array
     // return the defined array
+  const filtered = [];
+  each(elements, (item) => {
+    if (test(item)) {
+      filtered.push(item);
+    }
+  });
+  return filtered;
 };
 
 /* Extra Credit */
diff --git a/src/closure.js b/src/closure.js
index c402ad3..568ae13 100644
--- a/src/closure.js
+++ b/src/closure.js
@@ -25,12 +25,35 @@ const counterFactory = () => {
 const limitFunctionCallCount = (cb, n) => {
   // Should return a function that invokes `cb`.
   // The returned function should only allow `cb` to be invoked `n` times.
+  /* let i = 0;
+  function call() {
+    if (i > 10) {
+      return;
+    }
+    i++;
+    console.log('call me');
 
+    call();
+  }
+  call();
+};
+
+const limited = limitFunctionCallCount(() => console.log('go!'), 8);
+console.log(limited());
+console.log(limited());
+console.log(limited());
+console.log(limited());
+console.log(limited());
+console.log(limited());
+console.log(limited());
+console.log(limited());
+console.log(limited());
+*/
 };
 
 /* Extra Credit */
 const cacheFunction = (cb) => {
-  // Should return a funciton that invokes `cb`.
+  // Should return a function that invokes `cb`.
   // A cache (object) should be kept in closure scope.
   // The cache should keep track of all arguments have been used to invoke this function.
   // If the returned function is invoked with arguments that it has already seen
diff --git a/src/objects.js b/src/objects.js
index e7670bc..f602456 100644
--- a/src/objects.js
+++ b/src/objects.js
@@ -24,7 +24,7 @@ const values = (obj) => {
   // Ignore functions
   // http://underscorejs.org/#values
   const newObj = Object.keys(obj);
-  return Object.keys(obj);
+  return Object.keys(newObj);
 };
 
 const mapObject = (obj, cb) => {
@@ -40,16 +40,12 @@ const mapObject = (obj, cb) => {
 const pairs = (obj) => {
   // Convert an object into a list of [key, value] pairs.
   // http://underscorejs.org/#pairs
-  const newObj = Object.pairs(obj);
-  return newObj;
 };
 
 const invert = (obj) => {
   // Returns a copy of the object where the keys have become the values and the values the keys.
   // Assume that all of the object's values will be unique and string serializable.
   // http://underscorejs.org/#invert
-  const newObj = Object.invert(obj);
-  return Object.invert(obj);
 };
 
 const defaults = (obj, defaultProps) => {

From d70e145056abc0386bccfa9c62120de32a2fd670 Mon Sep 17 00:00:00 2001
From: John Pelley <jryanp@yahoo.com>
Date: Mon, 25 Sep 2017 12:26:07 -0700
Subject: [PATCH 4/9] Passed 37 tests

---
 src/arrays.js  |  1 +
 src/closure.js | 38 ++++++++++++++++----------------------
 2 files changed, 17 insertions(+), 22 deletions(-)

diff --git a/src/arrays.js b/src/arrays.js
index 3e9f9a0..a9575bf 100644
--- a/src/arrays.js
+++ b/src/arrays.js
@@ -46,6 +46,7 @@ const find = (elements, cb) => {
   // Look through each value in `elements` and pass each element to `cb`.
   // If `cb` returns `true` then return that element.
   // Return `undefined` if no elements pass the truth test.
+  return elements.filter(cb)[0];
 };
 
 const filter = (elements, test, cb) => {
diff --git a/src/closure.js b/src/closure.js
index 568ae13..59c0e40 100644
--- a/src/closure.js
+++ b/src/closure.js
@@ -22,34 +22,28 @@ const counterFactory = () => {
   };
 };
 
+// const limitFunctionCallCount = (cb, n) => {
+  // Should return a function that invokes `cb`.
+  // The returned function should only allow `cb` to be invoked `n` times.
+  // let count = 0;
+  // return function () {
+    // count += 1;
+    // if (count <= n) return cb();
+  // };
+// };
 const limitFunctionCallCount = (cb, n) => {
   // Should return a function that invokes `cb`.
   // The returned function should only allow `cb` to be invoked `n` times.
-  /* let i = 0;
-  function call() {
-    if (i > 10) {
-      return;
-    }
-    i++;
-    console.log('call me');
-
-    call();
-  }
-  call();
+  let count = 0;
+  return function () {
+    count += 1;
+    if (count <= n) return cb();
+    return null;
+  };
 };
 
 const limited = limitFunctionCallCount(() => console.log('go!'), 8);
-console.log(limited());
-console.log(limited());
-console.log(limited());
-console.log(limited());
-console.log(limited());
-console.log(limited());
-console.log(limited());
-console.log(limited());
-console.log(limited());
-*/
-};
+
 
 /* Extra Credit */
 const cacheFunction = (cb) => {

From f3768383ae6d1e8ffc80b232204789f740c3a9c0 Mon Sep 17 00:00:00 2001
From: John Pelley <jryanp@yahoo.com>
Date: Thu, 12 Oct 2017 19:10:05 -0700
Subject: [PATCH 5/9] got 40 tests to pass

---
 package-lock.json | 88 +++++++++++++++++++++++------------------------
 src/arrays.js     |  4 +--
 src/closure.js    | 13 ++-----
 src/es6.js        | 26 +++++++-------
 src/objects.js    | 10 ++++--
 src/recursion.js  |  3 +-
 6 files changed, 70 insertions(+), 74 deletions(-)

diff --git a/package-lock.json b/package-lock.json
index c2d7130..79342d4 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -13,7 +13,7 @@
     "acorn": {
       "version": "5.1.2",
       "resolved": "https://registry.npmjs.org/acorn/-/acorn-5.1.2.tgz",
-      "integrity": "sha512-o96FZLJBPY1lvTuJylGA9Bk3t/GKPPJG8H0ydQQl01crzwJgspa4AEIq/pVTXigmK0PHVQhiAtn8WMBLL9D2WA==",
+      "integrity": "sha1-kRy1PgNoB88Pp3jcXTcPvYZCRtc=",
       "dev": true
     },
     "acorn-globals": {
@@ -102,7 +102,7 @@
     "anymatch": {
       "version": "1.3.2",
       "resolved": "https://registry.npmjs.org/anymatch/-/anymatch-1.3.2.tgz",
-      "integrity": "sha512-0XNayC8lTHQ2OI8aljNCN3sSx6hsr/1+rlcDAotXJR7C1oZZHCNsfpbKwMjRA3Uqb5tF1Rae2oloTr4xpq+WjA==",
+      "integrity": "sha1-VT3Lj5HjyImEXf26NMd3IbkLnXo=",
       "dev": true,
       "requires": {
         "micromatch": "2.3.11",
@@ -139,7 +139,7 @@
     "arr-flatten": {
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/arr-flatten/-/arr-flatten-1.1.0.tgz",
-      "integrity": "sha512-L3hKV5R/p5o81R7O02IGnwpDmkp6E982XhtbuwSe3O4qOtMMMtodicASA1Cny2U+aCXcNpml+m4dPsvsJ3jatg==",
+      "integrity": "sha1-NgSLv/TntH4TZkQxbJlmnqWukfE=",
       "dev": true
     },
     "array-equal": {
@@ -190,7 +190,7 @@
     "async": {
       "version": "2.5.0",
       "resolved": "https://registry.npmjs.org/async/-/async-2.5.0.tgz",
-      "integrity": "sha512-e+lJAJeNWuPCNyxZKOBdaJGyLGHugXVQtrAwtuAe2vhxTYxFTKE73p8JuTmdH0qdQZtDvI4dhJwjZc5zsfIsYw==",
+      "integrity": "sha1-hDGQ/WtzV6C54clW7d3V7IRitU0=",
       "dev": true,
       "requires": {
         "lodash": "4.17.4"
@@ -709,7 +709,7 @@
         "regenerator-runtime": {
           "version": "0.11.0",
           "resolved": "https://registry.npmjs.org/regenerator-runtime/-/regenerator-runtime-0.11.0.tgz",
-          "integrity": "sha512-/aA0kLeRb5N9K0d4fw7ooEbI+xDe+DKD499EQqygGqeS8N3xto15p09uY2xj7ixP81sNPXvRLnAQIqdVStgb1A=="
+          "integrity": "sha1-flT+W1zNXWYk6mJVw0c74JC4AuE="
         }
       }
     },
@@ -755,7 +755,7 @@
     "babylon": {
       "version": "6.18.0",
       "resolved": "https://registry.npmjs.org/babylon/-/babylon-6.18.0.tgz",
-      "integrity": "sha512-q/UEjfGJ2Cm3oKV71DJz9d25TPnq5rhBVL2Q4fA5wcC3jcrdn7+SssEybFIxwAvvP+YCsCYNKughoF33GxgycQ=="
+      "integrity": "sha1-ry87iPpvXB5MY00aD46sT1WzleM="
     },
     "balanced-match": {
       "version": "1.0.0",
@@ -889,13 +889,13 @@
     "ci-info": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/ci-info/-/ci-info-1.1.1.tgz",
-      "integrity": "sha512-vHDDF/bP9RYpTWtUhpJRhCFdvvp3iDWvEbuDbWgvjUrNGV1MXJrE0MPcwGtEled04m61iwdBLUIHZtDgzWS4ZQ==",
+      "integrity": "sha1-R7RN8RjEjSWXtW00Ln4leRBgFxo=",
       "dev": true
     },
     "circular-json": {
       "version": "0.3.3",
       "resolved": "https://registry.npmjs.org/circular-json/-/circular-json-0.3.3.tgz",
-      "integrity": "sha512-UZK3NBx2Mca+b5LsG7bY183pHWt5Y1xts4P3Pz7ENTwGVnJOUWbRb3ocjvX7hx9tq/yTAdclXm9sZ38gNuem4A==",
+      "integrity": "sha1-gVyZ6oT2gJUp0vRXkb34JxE1LWY=",
       "dev": true
     },
     "cli-cursor": {
@@ -1128,7 +1128,7 @@
     "diff": {
       "version": "3.3.1",
       "resolved": "https://registry.npmjs.org/diff/-/diff-3.3.1.tgz",
-      "integrity": "sha512-MKPHZDMB0o6yHyDryUOScqZibp914ksXwAMYMTHj6KO8UeKsRYNJD3oNCKjTqZon+V488P7N/HzXF8t7ZR95ww==",
+      "integrity": "sha1-qoVnpu7QPFMfyJ0/cRzQ5SWd7HU=",
       "dev": true
     },
     "doctrine": {
@@ -1355,7 +1355,7 @@
     "eslint-config-airbnb-base": {
       "version": "11.3.2",
       "resolved": "https://registry.npmjs.org/eslint-config-airbnb-base/-/eslint-config-airbnb-base-11.3.2.tgz",
-      "integrity": "sha512-/fhjt/VqzBA2SRsx7ErDtv6Ayf+XLw9LIOqmpBuHFCVwyJo2EtzGWMB9fYRFBoWWQLxmNmCpenNiH0RxyeS41w==",
+      "integrity": "sha1-hwOxGr48iKx+wrdFt/31LgCuaAo=",
       "requires": {
         "eslint-restricted-globals": "0.1.1"
       }
@@ -1363,7 +1363,7 @@
     "eslint-import-resolver-node": {
       "version": "0.3.1",
       "resolved": "https://registry.npmjs.org/eslint-import-resolver-node/-/eslint-import-resolver-node-0.3.1.tgz",
-      "integrity": "sha512-yUtXS15gIcij68NmXmP9Ni77AQuCN0itXbCc/jWd8C6/yKZaSNXicpC8cgvjnxVdmfsosIXrjpzFq7GcDryb6A==",
+      "integrity": "sha1-RCJXTN5mqaewmZOO5NUIoZng48w=",
       "dev": true,
       "requires": {
         "debug": "2.6.8",
@@ -1373,7 +1373,7 @@
     "eslint-module-utils": {
       "version": "2.1.1",
       "resolved": "https://registry.npmjs.org/eslint-module-utils/-/eslint-module-utils-2.1.1.tgz",
-      "integrity": "sha512-jDI/X5l/6D1rRD/3T43q8Qgbls2nq5km5KSqiwlyUbGo5+04fXhMKdCPhjwbqAa6HXWaMxj8Q4hQDIh7IadJQw==",
+      "integrity": "sha1-q67IJBd2E7ipWymWOeG2+s9HNEk=",
       "dev": true,
       "requires": {
         "debug": "2.6.8",
@@ -1383,7 +1383,7 @@
     "eslint-plugin-import": {
       "version": "2.7.0",
       "resolved": "https://registry.npmjs.org/eslint-plugin-import/-/eslint-plugin-import-2.7.0.tgz",
-      "integrity": "sha512-HGYmpU9f/zJaQiKNQOVfHUh2oLWW3STBrCgH0sHTX1xtsxYlH1zjLh8FlQGEIdZSdTbUMaV36WaZ6ImXkenGxQ==",
+      "integrity": "sha1-Id4zOAue+1X1720uIQ7A4H5/pp8=",
       "dev": true,
       "requires": {
         "builtin-modules": "1.1.1",
@@ -1476,7 +1476,7 @@
     "esprima": {
       "version": "4.0.0",
       "resolved": "https://registry.npmjs.org/esprima/-/esprima-4.0.0.tgz",
-      "integrity": "sha512-oftTcaMu/EGrEIu904mWteKIv8vMuOgGYo7EhVJJN00R/EED9DCua/xxHRdYnKtcECzVg7xOWhflvJMnqcFZjw==",
+      "integrity": "sha1-RJnt3NERDgshi6zy+n9/WfVcqAQ=",
       "dev": true
     },
     "esquery": {
@@ -1699,7 +1699,7 @@
     "function-bind": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/function-bind/-/function-bind-1.1.1.tgz",
-      "integrity": "sha512-yIovAzMX49sF8Yl58fSCWJ5svSLuaibPxXQJFLmBObTuCr0Mf1KiPopGM9NiFjiYBCbfaa2Fh6breQ6ANVTI0A==",
+      "integrity": "sha1-pWiZ0+o8m6uHS7l3O3xe3pL0iV0=",
       "dev": true
     },
     "generate-function": {
@@ -1743,7 +1743,7 @@
     "glob": {
       "version": "7.1.2",
       "resolved": "https://registry.npmjs.org/glob/-/glob-7.1.2.tgz",
-      "integrity": "sha512-MJTUg1kjuLeQCJ+ccE4Vpa6kKVXkPYJ2mOCQyUuKLcLQsdrMCpBPUi8qVE6+YuaJkozeA9NusTAw3hLr8Xe5EQ==",
+      "integrity": "sha1-wZyd+aAocC1nhhI4SmVSQExjbRU=",
       "dev": true,
       "requires": {
         "fs.realpath": "1.0.0",
@@ -1776,7 +1776,7 @@
     "globals": {
       "version": "9.18.0",
       "resolved": "https://registry.npmjs.org/globals/-/globals-9.18.0.tgz",
-      "integrity": "sha512-S0nG3CLEQiY/ILxqtztTWH/3iRRdyBLw6KMDxnKMchrtbj2OFmehVh0WUCfW3DUrIgx/qFrJPICrq4Z4sTR9UQ=="
+      "integrity": "sha1-qjiWs+abSH8X4x7SFD1pqOMMLYo="
     },
     "globby": {
       "version": "5.0.0",
@@ -1903,7 +1903,7 @@
     "hosted-git-info": {
       "version": "2.5.0",
       "resolved": "https://registry.npmjs.org/hosted-git-info/-/hosted-git-info-2.5.0.tgz",
-      "integrity": "sha512-pNgbURSuab90KbTqvRPsseaTxOJCZBD0a7t+haSN33piP9cCM4l0CqdzAif2hUqm716UovKB2ROmiabGAKVXyg==",
+      "integrity": "sha1-bWDjSzq7yDEwYsO3mO+NkBoHrzw=",
       "dev": true
     },
     "html-encoding-sniffer": {
@@ -1935,7 +1935,7 @@
     "ignore": {
       "version": "3.3.5",
       "resolved": "https://registry.npmjs.org/ignore/-/ignore-3.3.5.tgz",
-      "integrity": "sha512-JLH93mL8amZQhh/p6mfQgVBH3M6epNq3DfsXsTSuSrInVjwyYlFE1nv2AgfRCC8PoOhM0jwQ5v8s9LgbK7yGDw==",
+      "integrity": "sha1-xOcVRV9gc6jX5drnLS/J1xZj26Y=",
       "dev": true
     },
     "imurmurhash": {
@@ -2088,7 +2088,7 @@
     "is-my-json-valid": {
       "version": "2.16.1",
       "resolved": "https://registry.npmjs.org/is-my-json-valid/-/is-my-json-valid-2.16.1.tgz",
-      "integrity": "sha512-ochPsqWS1WXj8ZnMIV0vnNXooaMhp7cyL4FMSIPKTtnV0Ha/T19G2b9kkhcNsabV9bxYkze7/aLZJb/bYuFduQ==",
+      "integrity": "sha1-WoRnd+LCYg0eaRBOXToDsfYIjxE=",
       "dev": true,
       "requires": {
         "generate-function": "2.0.0",
@@ -2218,13 +2218,13 @@
     "istanbul-lib-coverage": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/istanbul-lib-coverage/-/istanbul-lib-coverage-1.1.1.tgz",
-      "integrity": "sha512-0+1vDkmzxqJIn5rcoEqapSB4DmPxE31EtI2dF2aCkV5esN9EWHxZ0dwgDClivMXJqE7zaYQxq30hj5L0nlTN5Q==",
+      "integrity": "sha1-c7+5mIhSmUFck9OKPprfeEp3qdo=",
       "dev": true
     },
     "istanbul-lib-hook": {
       "version": "1.0.7",
       "resolved": "https://registry.npmjs.org/istanbul-lib-hook/-/istanbul-lib-hook-1.0.7.tgz",
-      "integrity": "sha512-3U2HB9y1ZV9UmFlE12Fx+nPtFqIymzrqCksrXujm3NVbAZIJg/RfYgO1XiIa0mbmxTjWpVEVlkIZJ25xVIAfkQ==",
+      "integrity": "sha1-3WYH8DB2V4/n1vKmMM8UO0m6zdw=",
       "dev": true,
       "requires": {
         "append-transform": "0.4.0"
@@ -2248,7 +2248,7 @@
     "istanbul-lib-report": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/istanbul-lib-report/-/istanbul-lib-report-1.1.1.tgz",
-      "integrity": "sha512-tvF+YmCmH4thnez6JFX06ujIA19WPa9YUiwjc1uALF2cv5dmE3It8b5I8Ob7FHJ70H9Y5yF+TDkVa/mcADuw1Q==",
+      "integrity": "sha1-8OVfVmVf+jQiIIC3oM1HYOFAX8k=",
       "dev": true,
       "requires": {
         "istanbul-lib-coverage": "1.1.1",
@@ -2271,7 +2271,7 @@
     "istanbul-lib-source-maps": {
       "version": "1.2.1",
       "resolved": "https://registry.npmjs.org/istanbul-lib-source-maps/-/istanbul-lib-source-maps-1.2.1.tgz",
-      "integrity": "sha512-mukVvSXCn9JQvdJl8wP/iPhqig0MRtuWuD4ZNKo6vB2Ik//AmhAKe3QnPN02dmkRe3lTudFk3rzoHhwU4hb94w==",
+      "integrity": "sha1-pv4ay6jOCO68Y45XLilNJnAIqgw=",
       "dev": true,
       "requires": {
         "debug": "2.6.8",
@@ -2831,7 +2831,7 @@
     "minimatch": {
       "version": "3.0.4",
       "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-3.0.4.tgz",
-      "integrity": "sha512-yJHVQEhyqPLUTgt9B83PXu6W3rx4MvvHvSUvToogpwoGDOUQ+yDrR0HRot+yOCdCO7u4hX3pWft6kWBBcqh0UA==",
+      "integrity": "sha1-UWbihkV/AzBgZL5Ul+jbsMPTIIM=",
       "dev": true,
       "requires": {
         "brace-expansion": "1.1.8"
@@ -2890,7 +2890,7 @@
     "normalize-package-data": {
       "version": "2.4.0",
       "resolved": "https://registry.npmjs.org/normalize-package-data/-/normalize-package-data-2.4.0.tgz",
-      "integrity": "sha512-9jjUFbTPfEy3R/ad/2oNbKtW9Hgovl5O1FvFWKkKblNXoN/Oou6+9+KKohPK13Yc3/TyunyWhJp6gvRNR/PPAw==",
+      "integrity": "sha1-EvlaMH1YNSB1oEkHuErIvpisAS8=",
       "dev": true,
       "requires": {
         "hosted-git-info": "2.5.0",
@@ -3174,7 +3174,7 @@
         "ansi-styles": {
           "version": "3.2.0",
           "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-3.2.0.tgz",
-          "integrity": "sha512-NnSOmMEYtVR2JVMIGTzynRkkaxtiq1xnFBcdQD/DnNCYPoEPsVJhM98BDyaoNOQIi7p4okdi3E27eN7GQbsUug==",
+          "integrity": "sha1-wVm41b4PnlpvNG2rlPFs4CIWG4g=",
           "dev": true,
           "requires": {
             "color-convert": "1.9.0"
@@ -3220,7 +3220,7 @@
     "randomatic": {
       "version": "1.1.7",
       "resolved": "https://registry.npmjs.org/randomatic/-/randomatic-1.1.7.tgz",
-      "integrity": "sha512-D5JUjPyJbaJDkuAazpVnSfVkLlpeO3wDlPROTMLGKG1zMFNFRgrciKo1ltz/AzNTkqE0HzDx655QOL51N06how==",
+      "integrity": "sha1-x6vpzIuHwLqodrGf3oP9RkeX44w=",
       "dev": true,
       "requires": {
         "is-number": "3.0.0",
@@ -3303,7 +3303,7 @@
     "readable-stream": {
       "version": "2.3.3",
       "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-2.3.3.tgz",
-      "integrity": "sha512-m+qzzcn7KUxEmd1gMbchF+Y2eIUbieUaxkWtptyHywrX0rE8QEYqPC07Vuy4Wm32/xE16NcdBctb8S0Xe/5IeQ==",
+      "integrity": "sha1-No8lEtefnUb9/HE0mueHi7weuVw=",
       "dev": true,
       "requires": {
         "core-util-is": "1.0.2",
@@ -3349,7 +3349,7 @@
     "regenerator-transform": {
       "version": "0.10.1",
       "resolved": "https://registry.npmjs.org/regenerator-transform/-/regenerator-transform-0.10.1.tgz",
-      "integrity": "sha512-PJepbvDbuK1xgIgnau7Y90cwaAmO/LCLMI2mPvaXq2heGMR3aWW5/BQvYrhJ8jgmQjXewXvBjzfqKcVOmhjZ6Q==",
+      "integrity": "sha1-HkmWg3Ix2ot/PPQRTXG1aRoGgN0=",
       "requires": {
         "babel-runtime": "6.26.0",
         "babel-types": "6.26.0",
@@ -3359,7 +3359,7 @@
     "regex-cache": {
       "version": "0.4.4",
       "resolved": "https://registry.npmjs.org/regex-cache/-/regex-cache-0.4.4.tgz",
-      "integrity": "sha512-nVIZwtCjkC9YgvWkpM55B5rBhBYRZhAaJbgcFYXXsHnbZ9UZI9nnVWYZpBlCqv9ho2eZryPnWrZGsOdPwVWXWQ==",
+      "integrity": "sha1-db3FiioUls7EihKDW8VMjVYjNt0=",
       "dev": true,
       "requires": {
         "is-equal-shallow": "0.1.3"
@@ -3470,7 +3470,7 @@
     "resolve": {
       "version": "1.4.0",
       "resolved": "https://registry.npmjs.org/resolve/-/resolve-1.4.0.tgz",
-      "integrity": "sha512-aW7sVKPufyHqOmyyLzg/J+8606v5nevBgaliIlV7nUpVMsDnoBGV/cbSLNjZAg9q0Cfd/+easKVKQ8vOu8fn1Q==",
+      "integrity": "sha1-p1vgHFPaJdk0qY69DkxKcxL5KoY=",
       "dev": true,
       "requires": {
         "path-parse": "1.0.5"
@@ -3529,7 +3529,7 @@
     "safe-buffer": {
       "version": "5.1.1",
       "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.1.1.tgz",
-      "integrity": "sha512-kKvNJn6Mm93gAczWVJg7wH+wGYWNrDHdWvpUmHyEsgCtIwwo3bqPtV4tR5tuPaUhTOo/kvhVwd8XwwOllGYkbg==",
+      "integrity": "sha1-iTMSr2myEj3vcfV4iQAWce6yyFM=",
       "dev": true
     },
     "sane": {
@@ -3576,13 +3576,13 @@
     "sax": {
       "version": "1.2.4",
       "resolved": "https://registry.npmjs.org/sax/-/sax-1.2.4.tgz",
-      "integrity": "sha512-NqVDv9TpANUjFm0N8uM5GxL36UgKi9/atZw+x7YFnQ8ckwFGKrl4xX4yWtrey3UJm5nP1kUbnYgLopqWNSRhWw==",
+      "integrity": "sha1-KBYjTiN4vdxOU1T6tcqold9xANk=",
       "dev": true
     },
     "semver": {
       "version": "5.4.1",
       "resolved": "https://registry.npmjs.org/semver/-/semver-5.4.1.tgz",
-      "integrity": "sha512-WfG/X9+oATh81XtllIo/I8gOiY9EXRdv1cQdyykeXK17YcUW3EXUAi2To4pcH6nZtJPr7ZOpM5OMyWJZm+8Rsg==",
+      "integrity": "sha1-4FnAnYVx8FQII3M0M1BdOi8AsY4=",
       "dev": true
     },
     "set-blocking": {
@@ -3605,7 +3605,7 @@
     "shellwords": {
       "version": "0.1.1",
       "resolved": "https://registry.npmjs.org/shellwords/-/shellwords-0.1.1.tgz",
-      "integrity": "sha512-vFwSUfQvqybiICwZY5+DAWIPLKsWO31Q91JSKl3UYv+K5c2QRPzn0qzec6QPu1Qc9eHYItiP3NdJqNVqetYAww==",
+      "integrity": "sha1-1rkYHBpI05cyTISHHvvPxz/AZUs=",
       "dev": true
     },
     "slash": {
@@ -3698,7 +3698,7 @@
     "string_decoder": {
       "version": "1.0.3",
       "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.0.3.tgz",
-      "integrity": "sha512-4AH6Z5fzNNBcH+6XDMfA/BTt87skxqJlO0lAh3Dker5zThcAxG6mKz+iGu308UKoPPQ8Dcqx/4JhujzltRa+hQ==",
+      "integrity": "sha1-D8Z9fBQYJd6UKC3VNr7GubzoYKs=",
       "dev": true,
       "requires": {
         "safe-buffer": "5.1.1"
@@ -3793,7 +3793,7 @@
         "string-width": {
           "version": "2.1.1",
           "resolved": "https://registry.npmjs.org/string-width/-/string-width-2.1.1.tgz",
-          "integrity": "sha512-nOqH59deCq9SRHlxq1Aw85Jnt4w6KvLKqWVik6oA9ZklXLNIOlqg4F2yrT1MVaTjAqvVwdfeZ7w7aCvJD7ugkw==",
+          "integrity": "sha1-q5Pyeo3BPSjKyBXEYhQ6bZASrp4=",
           "dev": true,
           "requires": {
             "is-fullwidth-code-point": "2.0.0",
@@ -3814,7 +3814,7 @@
     "test-exclude": {
       "version": "4.1.1",
       "resolved": "https://registry.npmjs.org/test-exclude/-/test-exclude-4.1.1.tgz",
-      "integrity": "sha512-35+Asrsk3XHJDBgf/VRFexPgh3UyETv8IAn/LRTiZjVy6rjPVqdEk8dJcJYBzl1w0XCJM48lvTy8SfEsCWS4nA==",
+      "integrity": "sha1-TYSWSwlmsAh+zDNKLOAC09k0HiY=",
       "dev": true,
       "requires": {
         "arrify": "1.0.1",
@@ -3833,7 +3833,7 @@
     "throat": {
       "version": "3.2.0",
       "resolved": "https://registry.npmjs.org/throat/-/throat-3.2.0.tgz",
-      "integrity": "sha512-/EY8VpvlqJ+sFtLPeOgc8Pl7kQVOWv0woD87KTXVHPIAE842FGT+rokxIhe8xIUP1cfgrkt0as0vDLjDiMtr8w==",
+      "integrity": "sha1-UMsGcO28QCN7njR9fh+I5GIK+DY=",
       "dev": true
     },
     "through": {
@@ -3963,7 +3963,7 @@
     "uuid": {
       "version": "3.1.0",
       "resolved": "https://registry.npmjs.org/uuid/-/uuid-3.1.0.tgz",
-      "integrity": "sha512-DIWtzUkw04M4k3bf1IcpS2tngXEL26YUD2M0tMDUpnUrz2hgzUBlD55a4FjdLGPvfHxS6uluGWvaVEqgBcVa+g==",
+      "integrity": "sha1-PdPT55Crwk17DToDT/q6vijrvAQ=",
       "dev": true
     },
     "validate-npm-package-license": {
@@ -4013,7 +4013,7 @@
     "webidl-conversions": {
       "version": "4.0.2",
       "resolved": "https://registry.npmjs.org/webidl-conversions/-/webidl-conversions-4.0.2.tgz",
-      "integrity": "sha512-YQ+BmxuTgd6UXZW3+ICGfyqRyHXVlD5GtQr5+qjiNW7bF0cqrzX500HVXPBOvgXb5YnzDd+h0zqyv61KUD7+Sg==",
+      "integrity": "sha1-qFWYCx8LazWbodXZ+zmulB+qY60=",
       "dev": true
     },
     "whatwg-encoding": {
@@ -4046,7 +4046,7 @@
     "which": {
       "version": "1.3.0",
       "resolved": "https://registry.npmjs.org/which/-/which-1.3.0.tgz",
-      "integrity": "sha512-xcJpopdamTuY5duC/KnTTNBraPK54YwpenP4lzxU8H91GudWpFv38u0CKjclE1Wi2EH2EDz5LRcHcKbCIzqGyg==",
+      "integrity": "sha1-/wS9/AEO5UfXgL7DjhrBwnd9JTo=",
       "dev": true,
       "requires": {
         "isexe": "2.0.0"
@@ -4074,7 +4074,7 @@
     "worker-farm": {
       "version": "1.5.0",
       "resolved": "https://registry.npmjs.org/worker-farm/-/worker-farm-1.5.0.tgz",
-      "integrity": "sha512-DHRiUggxtbruaTwnLDm2/BRDKZIoOYvrgYUj5Bam4fU6Gtvc0FaEyoswFPBjMXAweGW2H4BDNIpy//1yXXuaqQ==",
+      "integrity": "sha1-rf3wzUBYFGXtCh9kj5c1cir9XI0=",
       "dev": true,
       "requires": {
         "errno": "0.1.4",
diff --git a/src/arrays.js b/src/arrays.js
index a9575bf..2fb4255 100644
--- a/src/arrays.js
+++ b/src/arrays.js
@@ -35,7 +35,7 @@ const reduce = (elements, cb, memo = elements.shift()) => {
   }
   each(elements, (element, index) => {
     if (index > 0 || considerFirst) {
-      memo = cb(memo, element, index, elements);
+      memo = cb(memo, element, index);
     }
   });
   return memo;
@@ -59,7 +59,7 @@ const filter = (elements, test, cb) => {
     // return the defined array
   const filtered = [];
   each(elements, (item) => {
-    if (test(item)) {
+    if (test(item) === true) {
       filtered.push(item);
     }
   });
diff --git a/src/closure.js b/src/closure.js
index 59c0e40..99d2441 100644
--- a/src/closure.js
+++ b/src/closure.js
@@ -22,27 +22,18 @@ const counterFactory = () => {
   };
 };
 
-// const limitFunctionCallCount = (cb, n) => {
-  // Should return a function that invokes `cb`.
-  // The returned function should only allow `cb` to be invoked `n` times.
-  // let count = 0;
-  // return function () {
-    // count += 1;
-    // if (count <= n) return cb();
-  // };
-// };
 const limitFunctionCallCount = (cb, n) => {
   // Should return a function that invokes `cb`.
   // The returned function should only allow `cb` to be invoked `n` times.
   let count = 0;
-  return function () {
+  return () => {
     count += 1;
     if (count <= n) return cb();
     return null;
   };
 };
 
-const limited = limitFunctionCallCount(() => console.log('go!'), 8);
+// const limited = limitFunctionCallCount(() => ('go!'), 8);
 
 
 /* Extra Credit */
diff --git a/src/es6.js b/src/es6.js
index eb846ab..310489d 100644
--- a/src/es6.js
+++ b/src/es6.js
@@ -7,19 +7,19 @@
 //----------------
 // const, =>, default parameters, arrow functions default return statements using ()
 
-var food = 'pineapple';
+const food = 'pineapple';
 
-var isMyFavoriteFood = function(food) {
+let isMyFavoriteFood = function(food) {
   food = food || 'thousand-year-old egg'; //This sets a default value if `food` is falsey
   return food === 'thousand-year-old egg';
 };
 
-var isThisMyFavorite = isMyFavoriteFood(food);
+const isThisMyFavorite = isMyFavoriteFood(food);
 
 //----------------
 //const, class, template literals, enhanced object literals (foo: foo, -> foo,)
 
-var User = function(options) {
+const User = function(options) {
   this.username = options.username;
   this.password = options.password;
   this.sayHi = function() {
@@ -27,10 +27,10 @@ var User = function(options) {
   };
 }
 
-var username = 'JavaScriptForever';
-var password = 'password';
+let username = 'JavaScriptForever';
+let password = 'password';
 
-var me = new User({
+const me = new User({
   username: username,
   password: password,
 });
@@ -38,19 +38,19 @@ var me = new User({
 // ----------------
 // let, const, =>, ... (spread operator)
 
-var addArgs = function () {
-  var sum = 0;
-  for (var i = 0; i < arguments.length; i++) {
+const addArgs = function () {
+  let sum = 0;
+  for (let i = 0; i < arguments.length; i++) {
     sum += arguments[i];
   }
   return sum;
 };
 
-var argsToCb = function (cb) {
-  var args = Array.prototype.slice.call(arguments);
+const argsToCb = function (cb) {
+  let args = Array.prototype.slice.call(arguments);
   return cb.apply(null, args.splice(1));
 };
 
-var result = argsToCb(addArgs, 1, 2, 3, 4, 5); //result should be 15
+const result = argsToCb(addArgs, 1, 2, 3, 4, 5); //result should be 15
 
 /* eslint-enable */
diff --git a/src/objects.js b/src/objects.js
index f602456..624c602 100644
--- a/src/objects.js
+++ b/src/objects.js
@@ -23,8 +23,8 @@ const values = (obj) => {
   // Return all of the values of the object's own properties.
   // Ignore functions
   // http://underscorejs.org/#values
-  const newObj = Object.keys(obj);
-  return Object.keys(newObj);
+  const newObj = Object.values(obj);
+  return Object.values(newObj);
 };
 
 const mapObject = (obj, cb) => {
@@ -40,18 +40,22 @@ const mapObject = (obj, cb) => {
 const pairs = (obj) => {
   // Convert an object into a list of [key, value] pairs.
   // http://underscorejs.org/#pairs
+  const result = Object.keys(pairs).map(key => ({ key, value: pairs[key] }));
+  return Object.keys(result);
 };
 
 const invert = (obj) => {
   // Returns a copy of the object where the keys have become the values and the values the keys.
   // Assume that all of the object's values will be unique and string serializable.
-  // http://underscorejs.org/#invert
+  // http://underscorejs.org/#inver
+  return obj;
 };
 
 const defaults = (obj, defaultProps) => {
   // Fill in undefined properties that match properties on the `defaultProps` parameter object.
   // Return `obj`.
   // http://underscorejs.org/#defaults
+  return obj;
 };
 
 /* eslint-enable no-unused-vars */
diff --git a/src/recursion.js b/src/recursion.js
index 717686a..96c48d7 100644
--- a/src/recursion.js
+++ b/src/recursion.js
@@ -5,7 +5,8 @@ const nFibonacci = (n) => {
   // return the nth number in the sequence
   if (n < 2) {
     return 1;
-  } return nFibonacci(n - 2) + nFibonacci(n - 1);
+  }
+  return nFibonacci(n - 2) + nFibonacci(n - 1);
 };
 
 const nFactorial = (n) => {

From 831e058ccee943a94820627ffe6a830cf38101df Mon Sep 17 00:00:00 2001
From: John Pelley <jryanp@yahoo.com>
Date: Mon, 30 Oct 2017 18:49:41 -0700
Subject: [PATCH 6/9] Passed 49 of 51 tests

---
 src/class.js   | 33 ++++++++++++++++++++++++++++-----
 src/objects.js | 33 ++++++++++++++++++++++++---------
 2 files changed, 52 insertions(+), 14 deletions(-)

diff --git a/src/class.js b/src/class.js
index 0390bfb..8088c7c 100644
--- a/src/class.js
+++ b/src/class.js
@@ -6,8 +6,21 @@
 // for a potential password that will be compared to the `password` property.
 // Return true if the potential password matches the `password` property.  Otherwise return false.
 
+class User {
+  constructor(options) {
+    this.email = options.email;
+    this.password = options.password;
+  }
 
-/* eslint-disable no-undef */ // Remove this comment once you write your classes.
+  comparePasswords(password) {
+    if (password === this.password) {
+      return true;
+    }
+    return false;
+  }
+
+}
+/*eslint-disable no-undef */
 
 
 // Create a class called `Animal` and a class called `Cat`.
@@ -20,18 +33,28 @@
 // `meow` that should return the string `<name> meowed!` where `<name>` is the `name`
 // property set on the Cat instance.
 
-/* class Animal {
+class Animal {
+  constructor(options) {
+    this.name = options.name;
+    this.age = options.age;
+  }
+  growOlder() {
+    return this.age;
+  }
+}
+class Cat extends Animal {
   constructor(options) {
+    super(name);
     this.name = options.name;
     this.age = options.age;
-    this.say = (`${name}' meowed!`);
   }
   growOlder() {
     return this.age;
   }
+  meow() {
+    return `${this.name} meowed!`;
+  }
 }
-const Cat = new Animal();
-this.name = options.name; */
 
 module.exports = {
   User,
diff --git a/src/objects.js b/src/objects.js
index 624c602..3ccddaa 100644
--- a/src/objects.js
+++ b/src/objects.js
@@ -28,7 +28,8 @@ const values = (obj) => {
 };
 
 const mapObject = (obj, cb) => {
-  // Like map for arrays, but for objects. Transform the value of each property in turn.
+  // Like map for arrays, but for objects. Transform the value of
+  // each property in turn.
   // http://underscorejs.org/#mapObject
   const arrayOfKeys = Object.keys(obj);
   each(arrayOfKeys, (key) => {
@@ -39,25 +40,39 @@ const mapObject = (obj, cb) => {
 
 const pairs = (obj) => {
   // Convert an object into a list of [key, value] pairs.
+  return Object.entries(obj);
   // http://underscorejs.org/#pairs
-  const result = Object.keys(pairs).map(key => ({ key, value: pairs[key] }));
-  return Object.keys(result);
 };
 
 const invert = (obj) => {
   // Returns a copy of the object where the keys have become the values and the values the keys.
   // Assume that all of the object's values will be unique and string serializable.
-  // http://underscorejs.org/#inver
-  return obj;
+  // http://underscorejs.org/#invert
+  // return obj;
+  const result = {};
+  const newKeys = Object.keys(obj);
+  for (let i = 0, length = newKeys.length; i < length; i++) {
+    if (result[obj[newKeys[i]]] instanceof Array) {
+      result[obj[newKeys[i]]].push(newKeys[i]);
+    } else if (result[obj[newKeys[i]]]) {
+      const temp = result[obj[newKeys[i]]];
+      result[obj[newKeys[i]]] = [temp, newKeys[i]];
+    } else {
+      result[obj[newKeys[i]]] = newKeys[i];
+    }
+  }
+  return result;
 };
 
 const defaults = (obj, defaultProps) => {
-  // Fill in undefined properties that match properties on the `defaultProps` parameter object.
-  // Return `obj`.
-  // http://underscorejs.org/#defaults
+// Fill in undefined properties that match properties on the
+// `defaultProps` parameter object.
+// http://underscorejs.org/#defaults
+  Object.keys(defaultProps).forEach((key) => {
+    obj[key] = obj[key] || defaultProps[key];
+  });
   return obj;
 };
-
 /* eslint-enable no-unused-vars */
 
 module.exports = {

From 51860415370eb6876f5f046eb37af0bdba257841 Mon Sep 17 00:00:00 2001
From: John Pelley <jryanp@yahoo.com>
Date: Tue, 21 Nov 2017 00:37:43 -0800
Subject: [PATCH 7/9] Passed 50

---
 package-lock.json | 24 ++++++++++++------------
 package.json      |  2 +-
 src/class.js      | 22 ++++++++++++++--------
 src/closure.js    |  8 ++++++--
 4 files changed, 33 insertions(+), 23 deletions(-)

diff --git a/package-lock.json b/package-lock.json
index 79342d4..6bf30e0 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1381,9 +1381,9 @@
       }
     },
     "eslint-plugin-import": {
-      "version": "2.7.0",
-      "resolved": "https://registry.npmjs.org/eslint-plugin-import/-/eslint-plugin-import-2.7.0.tgz",
-      "integrity": "sha1-Id4zOAue+1X1720uIQ7A4H5/pp8=",
+      "version": "2.8.0",
+      "resolved": "https://registry.npmjs.org/eslint-plugin-import/-/eslint-plugin-import-2.8.0.tgz",
+      "integrity": "sha512-Rf7dfKJxZ16QuTgVv1OYNxkZcsu/hULFnC+e+w0Gzi6jMC3guQoWQgxYxc54IDRinlb6/0v5z/PxxIKmVctN+g==",
       "dev": true,
       "requires": {
         "builtin-modules": "1.1.1",
@@ -3695,15 +3695,6 @@
         }
       }
     },
-    "string_decoder": {
-      "version": "1.0.3",
-      "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.0.3.tgz",
-      "integrity": "sha1-D8Z9fBQYJd6UKC3VNr7GubzoYKs=",
-      "dev": true,
-      "requires": {
-        "safe-buffer": "5.1.1"
-      }
-    },
     "string-length": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/string-length/-/string-length-1.0.1.tgz",
@@ -3724,6 +3715,15 @@
         "strip-ansi": "3.0.1"
       }
     },
+    "string_decoder": {
+      "version": "1.0.3",
+      "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.0.3.tgz",
+      "integrity": "sha1-D8Z9fBQYJd6UKC3VNr7GubzoYKs=",
+      "dev": true,
+      "requires": {
+        "safe-buffer": "5.1.1"
+      }
+    },
     "stringstream": {
       "version": "0.0.5",
       "resolved": "https://registry.npmjs.org/stringstream/-/stringstream-0.0.5.tgz",
diff --git a/package.json b/package.json
index d23afbd..1b89fb3 100644
--- a/package.json
+++ b/package.json
@@ -21,7 +21,7 @@
     "babel-jest": "^19.0.0",
     "eslint": "^3.17.1",
     "eslint-config-airbnb-base": "^11.1.3",
-    "eslint-plugin-import": "^2.2.0",
+    "eslint-plugin-import": "^2.8.0",
     "jest": "^19.0.2",
     "regenerator-runtime": "^0.10.3"
   },
diff --git a/src/class.js b/src/class.js
index 8088c7c..b2d75d3 100644
--- a/src/class.js
+++ b/src/class.js
@@ -20,7 +20,7 @@ class User {
   }
 
 }
-/*eslint-disable no-undef */
+/* eslint-disable no-undef */
 
 
 // Create a class called `Animal` and a class called `Cat`.
@@ -39,23 +39,29 @@ class Animal {
     this.age = options.age;
   }
   growOlder() {
-    return this.age;
+    return this.age += 1;
   }
 }
 class Cat extends Animal {
   constructor(options) {
-    super(name);
+    super(options);
     this.name = options.name;
-    this.age = options.age;
-  }
-  growOlder() {
-    return this.age;
   }
   meow() {
-    return `${this.name} meowed!`;
+    console.log(`${this.name} meowed!`);
   }
 }
 
+const animal = new Animal({ age: 1 });
+
+const cat = new Cat({
+  age: 1,
+  name: 'El Gato'
+});
+console.log(cat.growOlder());
+cat.meow();
+console.log(cat.growOlder());
+
 module.exports = {
   User,
   Cat
diff --git a/src/closure.js b/src/closure.js
index 99d2441..c3a63b7 100644
--- a/src/closure.js
+++ b/src/closure.js
@@ -29,12 +29,16 @@ const limitFunctionCallCount = (cb, n) => {
   return () => {
     count += 1;
     if (count <= n) return cb();
-    return null;
+    else if
+      (count >= n) return null;
   };
 };
 
-// const limited = limitFunctionCallCount(() => ('go!'), 8);
+// const bar = (x, y, z) => (x + y + z);
+const limitedFunction = limitFunctionCallCount(() => console.log(5), 30);
 
+// console.log(limitedFunction());
+// limitedFunction(5, 10, 15);
 
 /* Extra Credit */
 const cacheFunction = (cb) => {

From fc4e5b620436b162ed2b2c162aa8cee1207f2b39 Mon Sep 17 00:00:00 2001
From: John Pelley <jryanp@yahoo.com>
Date: Thu, 30 Nov 2017 20:41:09 -0800
Subject: [PATCH 8/9] Passed 51 tests all suites

---
 src/closure.js | 13 +++----------
 1 file changed, 3 insertions(+), 10 deletions(-)

diff --git a/src/closure.js b/src/closure.js
index c3a63b7..7a88624 100644
--- a/src/closure.js
+++ b/src/closure.js
@@ -26,20 +26,13 @@ const limitFunctionCallCount = (cb, n) => {
   // Should return a function that invokes `cb`.
   // The returned function should only allow `cb` to be invoked `n` times.
   let count = 0;
-  return () => {
+  return (...args) => {
+    if (count === n) return null;
     count += 1;
-    if (count <= n) return cb();
-    else if
-      (count >= n) return null;
+    return cb(...args);
   };
 };
 
-// const bar = (x, y, z) => (x + y + z);
-const limitedFunction = limitFunctionCallCount(() => console.log(5), 30);
-
-// console.log(limitedFunction());
-// limitedFunction(5, 10, 15);
-
 /* Extra Credit */
 const cacheFunction = (cb) => {
   // Should return a function that invokes `cb`.

From 185029ffa474e44394fa6b2d37fc72a048472c12 Mon Sep 17 00:00:00 2001
From: John Pelley <jryanp@yahoo.com>
Date: Tue, 27 Feb 2018 14:25:58 -0800
Subject: [PATCH 9/9] John Pelley, 51 tests passed

---
 src/closure.js | 10 ++++++++++
 src/this.js    | 13 ++++++++++---
 2 files changed, 20 insertions(+), 3 deletions(-)

diff --git a/src/closure.js b/src/closure.js
index 7a88624..9fb1943 100644
--- a/src/closure.js
+++ b/src/closure.js
@@ -42,9 +42,19 @@ const cacheFunction = (cb) => {
   // then it should return the cached result and not invoke `cb` again.
   // `cb` should only ever be invoked once for a given set of arguments.
   const cache = {};
+  /* return (args) => {
+    const cacheKey = args.toString();
+    if (!(cacheKey in cache)) {
+      cache[cacheKey] = cb(args);
+    }
+    return cache[cacheKey];
+  };
+}; */
   return (input) => {
     // if input is already cached, don't do it
     if (Object.prototype.hasOwnProperty.call(cache, input)) return cache[input];
+    // const something = Object.prototype.hasOwnProperty.call( , );
+    // if (something) return cache[input];
     cache[input] = cb(input);
     return cache[input];
   };
diff --git a/src/this.js b/src/this.js
index 8ea3020..6db73ed 100644
--- a/src/this.js
+++ b/src/this.js
@@ -4,17 +4,21 @@
 
 class User {
   constructor(options) {
+    this.username = options.username;
+    this.password = options.password;
+    this.checkPassword = string => string === this.password;
+  }
     // set a username and password property on the user object that is created
   }
   // create a method on the User class called `checkPassword`
   // this method should take in a string and compare it to the object's password property
   // return `true` if they match, otherwise return `false`
-}
-
 const me = new User({ username: 'LambdaSchool', password: 'correcthorsebatterystaple' });
 const result = me.checkPassword('correcthorsebatterystaple'); // should return `true`
+console.log(result);
 
 const checkPassword = function comparePasswords(passwordToCompare) {
+  this.checkPassword(passwordToCompare);
   // recreate the `checkPassword` method that you made on the `User` class
   // use `this` to access the object's `password` property.
   // do not modify this function's parameters
@@ -25,7 +29,10 @@ const checkPassword = function comparePasswords(passwordToCompare) {
 // use .call, .apply, and .bind
 
 // .call
+console.log(checkPassword.call(me, 'correcthorsebatterystaple'));
 
 // .apply
-
+console.log(checkPassword.apply(me, ['correcthorsebatterystaple']));
 // .bind
+const checkCheck = me.checkPassword.bind(me);
+console.log(checkCheck('correcthorsebatterystaple'));