diff --git a/fp/_mapping.js b/fp/_mapping.js
index 001b9be55..9d9462db3 100644
--- a/fp/_mapping.js
+++ b/fp/_mapping.js
@@ -1,204 +1,200 @@
-module.exports = {
+/** Used to map method names to their iteratee ary. */
+exports.aryIteratee = {
+  'assignWith': 2,
+  'assignInWith': 2,
+  'cloneDeepWith': 1,
+  'cloneWith': 1,
+  'dropRightWhile': 1,
+  'dropWhile': 1,
+  'every': 1,
+  'filter': 1,
+  'find': 1,
+  'findIndex': 1,
+  'findKey': 1,
+  'findLast': 1,
+  'findLastIndex': 1,
+  'findLastKey': 1,
+  'flatMap': 1,
+  'forEach': 1,
+  'forEachRight': 1,
+  'forIn': 1,
+  'forInRight': 1,
+  'forOwn': 1,
+  'forOwnRight': 1,
+  'isEqualWith': 2,
+  'isMatchWith': 2,
+  'map': 1,
+  'mapKeys': 1,
+  'mapValues': 1,
+  'partition': 1,
+  'reduce': 2,
+  'reduceRight': 2,
+  'reject': 1,
+  'remove': 1,
+  'some': 1,
+  'takeRightWhile': 1,
+  'takeWhile': 1,
+  'times': 1,
+  'transform': 2
+};
 
-  /** Used to map method names to their iteratee ary. */
-  'aryIteratee': {
-    'assignWith': 2,
-    'assignInWith': 2,
-    'cloneDeepWith': 1,
-    'cloneWith': 1,
-    'dropRightWhile': 1,
-    'dropWhile': 1,
-    'every': 1,
-    'filter': 1,
-    'find': 1,
-    'findIndex': 1,
-    'findKey': 1,
-    'findLast': 1,
-    'findLastIndex': 1,
-    'findLastKey': 1,
-    'flatMap': 1,
-    'forEach': 1,
-    'forEachRight': 1,
-    'forIn': 1,
-    'forInRight': 1,
-    'forOwn': 1,
-    'forOwnRight': 1,
-    'isEqualWith': 2,
-    'isMatchWith': 2,
-    'map': 1,
-    'mapKeys': 1,
-    'mapValues': 1,
-    'partition': 1,
-    'reduce': 2,
-    'reduceRight': 2,
-    'reject': 1,
-    'remove': 1,
-    'some': 1,
-    'takeRightWhile': 1,
-    'takeWhile': 1,
-    'times': 1,
-    'transform': 2
+/** Used to map ary to method names. */
+exports.aryMethod = {
+  1: [
+      'attempt', 'ceil', 'create', 'curry', 'curryRight', 'floor', 'fromPairs',
+      'invert', 'iteratee', 'memoize', 'method', 'methodOf', 'mixin', 'over',
+      'overEvery', 'overSome', 'rest', 'reverse', 'round', 'runInContext',
+      'template', 'trim', 'trimEnd', 'trimStart', 'uniqueId', 'words'
+    ],
+  2: [
+      'add', 'after', 'ary', 'assign', 'assignIn', 'at', 'before', 'bind', 'bindKey',
+      'chunk', 'cloneDeepWith', 'cloneWith', 'concat', 'countBy', 'curryN',
+      'curryRightN', 'debounce', 'defaults', 'defaultsDeep', 'delay', 'difference',
+      'drop', 'dropRight', 'dropRightWhile', 'dropWhile', 'endsWith', 'eq', 'every',
+      'extend', 'filter', 'find', 'find', 'findIndex', 'findKey', 'findLast',
+      'findLastIndex', 'findLastKey', 'flatMap', 'forEach', 'forEachRight', 'forIn',
+      'forInRight', 'forOwn', 'forOwnRight', 'get', 'groupBy', 'gt', 'gte', 'has',
+      'hasIn', 'includes', 'indexOf', 'intersection', 'invertBy', 'invoke',
+      'invokeMap', 'isEqual', 'isMatch', 'join', 'keyBy', 'lastIndexOf', 'lt', 'lte',
+      'map', 'mapKeys', 'mapValues', 'matchesProperty', 'maxBy', 'merge', 'minBy',
+      'omit', 'omitBy', 'orderBy', 'overArgs', 'pad', 'padEnd', 'padStart', 'parseInt',
+      'partition', 'pick', 'pickBy', 'pull', 'pullAll', 'pullAt', 'random', 'range',
+      'rangeRight', 'rearg', 'reject', 'remove', 'repeat', 'result', 'sampleSize',
+      'some', 'sortBy', 'sortedIndex', 'sortedIndexOf', 'sortedLastIndex',
+      'sortedLastIndexOf', 'sortedUniqBy', 'split', 'startsWith', 'subtract',
+      'sumBy', 'take', 'takeRight', 'takeRightWhile', 'takeWhile', 'tap', 'throttle',
+      'thru', 'times', 'truncate', 'union', 'uniqBy', 'uniqWith', 'unset', 'unzipWith',
+      'without', 'wrap', 'xor', 'zip', 'zipObject', 'zipObjectDeep'
+    ],
+  3: [
+      'assignInWith', 'assignWith', 'clamp', 'differenceBy', 'differenceWith',
+      'getOr', 'inRange', 'intersectionBy', 'intersectionWith', 'isEqualWith',
+      'isMatchWith', 'mergeWith', 'pullAllBy', 'reduce', 'reduceRight', 'replace',
+      'set', 'slice', 'sortedIndexBy', 'sortedLastIndexBy', 'transform', 'unionBy',
+      'unionWith', 'xorBy', 'xorWith', 'zipWith'
+    ],
+  4: [
+      'fill', 'setWith'
+    ]
+};
+
+/** Used to map ary to rearg configs. */
+exports.aryRearg = {
+  2: [1, 0],
+  3: [2, 1, 0],
+  4: [3, 2, 0, 1]
+};
+
+/** Used to map method names to iteratee rearg configs. */
+exports.iterateeRearg = {
+  'findKey': [1],
+  'findLastKey': [1],
+  'mapKeys': [1]
+};
+
+/** Used to map method names to rearg configs. */
+exports.methodRearg = {
+  'assignInWith': [1, 2, 0],
+  'assignWith': [1, 2, 0],
+  'clamp': [2, 0, 1],
+  'mergeWith': [1, 2, 0],
+  'reduce': [2, 0, 1],
+  'reduceRight': [2, 0, 1],
+  'set': [2, 0, 1],
+  'setWith': [3, 1, 2, 0],
+  'slice': [2, 0, 1],
+  'transform': [2, 0, 1]
+};
+
+/** Used to iterate `mapping.aryMethod` keys. */
+exports.caps = [1, 2, 3, 4];
+
+/** Used to map keys to other keys. */
+exports.key = {
+  'curryN': 'curry',
+  'curryRightN': 'curryRight',
+  'getOr': 'get'
+};
+
+/** Used to identify methods which mutate arrays or objects. */
+exports.mutate = {
+  'array': {
+    'fill': true,
+    'pull': true,
+    'pullAll': true,
+    'pullAllBy': true,
+    'pullAt': true,
+    'remove': true,
+    'reverse': true
   },
-
-  /** Used to map ary to method names. */
-  'aryMethod': {
-    1: [
-        'attempt', 'ceil', 'create', 'curry', 'curryRight', 'floor', 'fromPairs',
-        'invert', 'iteratee', 'memoize', 'method', 'methodOf', 'mixin', 'over',
-        'overEvery', 'overSome', 'rest', 'reverse', 'round', 'runInContext',
-        'template', 'trim', 'trimEnd', 'trimStart', 'uniqueId', 'words'
-      ],
-    2: [
-        'add', 'after', 'ary', 'assign', 'assignIn', 'at', 'before', 'bind', 'bindKey',
-        'chunk', 'cloneDeepWith', 'cloneWith', 'concat', 'countBy', 'curryN',
-        'curryRightN', 'debounce', 'defaults', 'defaultsDeep', 'delay', 'difference',
-        'drop', 'dropRight', 'dropRightWhile', 'dropWhile', 'endsWith', 'eq',
-        'every', 'extend', 'filter', 'find', 'find', 'findIndex', 'findKey',
-        'findLast', 'findLastIndex', 'findLastKey', 'flatMap', 'forEach',
-        'forEachRight', 'forIn', 'forInRight', 'forOwn', 'forOwnRight', 'get',
-        'groupBy', 'gt', 'gte', 'has', 'hasIn', 'includes', 'indexOf', 'intersection',
-        'invertBy', 'invoke', 'invokeMap', 'isEqual', 'isMatch', 'join', 'keyBy',
-        'lastIndexOf', 'lt', 'lte', 'map', 'mapKeys', 'mapValues', 'matchesProperty',
-        'maxBy', 'merge', 'minBy', 'omit', 'omitBy', 'orderBy', 'overArgs', 'pad',
-        'padEnd', 'padStart', 'parseInt', 'partition', 'pick', 'pickBy', 'pull',
-        'pullAll', 'pullAt', 'random', 'range', 'rangeRight', 'rearg', 'reject',
-        'remove', 'repeat', 'result', 'sampleSize', 'some', 'sortBy', 'sortedIndex',
-        'sortedIndexOf', 'sortedLastIndex', 'sortedLastIndexOf', 'sortedUniqBy',
-        'split', 'startsWith', 'subtract', 'sumBy', 'take', 'takeRight', 'takeRightWhile',
-        'takeWhile', 'tap', 'throttle', 'thru', 'times', 'truncate', 'union', 'uniqBy',
-        'uniqWith', 'unset', 'unzipWith', 'without', 'wrap', 'xor', 'zip', 'zipObject',
-        'zipObjectDeep'
-      ],
-    3: [
-        'assignInWith', 'assignWith', 'clamp', 'differenceBy', 'differenceWith',
-        'getOr', 'inRange', 'intersectionBy', 'intersectionWith', 'isEqualWith',
-        'isMatchWith', 'mergeWith', 'pullAllBy', 'reduce', 'reduceRight', 'replace',
-        'set', 'slice', 'sortedIndexBy', 'sortedLastIndexBy', 'transform', 'unionBy',
-        'unionWith', 'xorBy', 'xorWith', 'zipWith'
-      ],
-    4: [
-        'fill', 'setWith'
-      ]
-  },
-
-  /** Used to map ary to rearg configs. */
-  'aryRearg': {
-    2: [1, 0],
-    3: [2, 1, 0],
-    4: [3, 2, 0, 1]
-  },
-
-  /** Used to map method names to iteratee rearg configs. */
-  'iterateeRearg': {
-    'findKey': [1],
-    'findLastKey': [1],
-    'mapKeys': [1]
-  },
-
-  /** Used to map method names to rearg configs. */
-  'methodRearg': {
-    'assignInWith': [1, 2, 0],
-    'assignWith': [1, 2, 0],
-    'clamp': [2, 0, 1],
-    'mergeWith': [1, 2, 0],
-    'reduce': [2, 0, 1],
-    'reduceRight': [2, 0, 1],
-    'set': [2, 0, 1],
-    'setWith': [3, 1, 2, 0],
-    'slice': [2, 0, 1],
-    'transform': [2, 0, 1]
-  },
-
-  /** Used to iterate `mapping.aryMethod` keys. */
-  'caps': [1, 2, 3, 4],
-
-  /** Used to map keys to other keys. */
-  'key': {
-    'curryN': 'curry',
-    'curryRightN': 'curryRight',
-    'getOr': 'get'
-  },
-
-  /** Used to identify methods which mutate arrays or objects. */
-  'mutate': {
-    'array': {
-      'fill': true,
-      'pull': true,
-      'pullAll': true,
-      'pullAllBy': true,
-      'pullAt': true,
-      'remove': true,
-      'reverse': true
-    },
-    'object': {
-      'assign': true,
-      'assignIn': true,
-      'assignInWith': true,
-      'assignWith': true,
-      'defaults': true,
-      'defaultsDeep': true,
-      'merge': true,
-      'mergeWith': true
-    },
-    'set': {
-      'set': true,
-      'setWith': true
-    }
-  },
-
-  /** Used to track methods with placeholder support */
-  'placeholder': {
-    'bind': true,
-    'bindKey': true,
-    'curry': true,
-    'curryRight': true,
-    'partial': true,
-    'partialRight': true
-  },
-
-  /** Used to map real names to their aliases. */
-  'realToAlias': {
-    'ary': ['nAry'],
-    'assignIn': ['extend'],
-    'assignInWith': ['extendWith'],
-    'filter': ['whereEq'],
-    'flatten': ['unnest'],
-    'flow': ['pipe'],
-    'flowRight': ['compose'],
-    'forEach': ['each'],
-    'forEachRight': ['eachRight'],
-    'get': ['path', 'prop'],
-    'getOr': ['pathOr', 'propOr'],
-    'head': ['first'],
-    'includes': ['contains'],
-    'initial': ['init'],
-    'isEqual': ['equals'],
-    'mapValues': ['mapObj'],
-    'matchesProperty': ['pathEq'],
-    'omit': ['dissoc', 'omitAll'],
-    'overArgs': ['useWith'],
-    'overEvery': ['allPass'],
-    'overSome': ['somePass'],
-    'pick': ['pickAll'],
-    'propertyOf': ['propOf'],
-    'rest': ['unapply'],
-    'some': ['all'],
-    'spread': ['apply'],
-    'zipObject': ['zipObj']
-  },
-
-  /** Used to track methods that skip `_.rearg`. */
-  'skipRearg': {
+  'object': {
     'assign': true,
     'assignIn': true,
-    'concat': true,
-    'difference': true,
-    'matchesProperty': true,
+    'assignInWith': true,
+    'assignWith': true,
+    'defaults': true,
+    'defaultsDeep': true,
     'merge': true,
-    'random': true,
-    'range': true,
-    'rangeRight': true,
-    'zip': true,
-    'zipObject': true
+    'mergeWith': true
+  },
+  'set': {
+    'set': true,
+    'setWith': true
   }
 };
+
+/** Used to track methods with placeholder support */
+exports.placeholder = {
+  'bind': true,
+  'bindKey': true,
+  'curry': true,
+  'curryRight': true,
+  'partial': true,
+  'partialRight': true
+};
+
+/** Used to map real names to their aliases. */
+exports.realToAlias = {
+  'ary': ['nAry'],
+  'assignIn': ['extend'],
+  'assignInWith': ['extendWith'],
+  'filter': ['whereEq'],
+  'flatten': ['unnest'],
+  'flow': ['pipe'],
+  'flowRight': ['compose'],
+  'forEach': ['each'],
+  'forEachRight': ['eachRight'],
+  'get': ['path', 'prop'],
+  'getOr': ['pathOr', 'propOr'],
+  'head': ['first'],
+  'includes': ['contains'],
+  'initial': ['init'],
+  'isEqual': ['equals'],
+  'mapValues': ['mapObj'],
+  'matchesProperty': ['pathEq'],
+  'omit': ['dissoc', 'omitAll'],
+  'overArgs': ['useWith'],
+  'overEvery': ['allPass'],
+  'overSome': ['somePass'],
+  'pick': ['pickAll'],
+  'propertyOf': ['propOf'],
+  'rest': ['unapply'],
+  'some': ['all'],
+  'spread': ['apply'],
+  'zipObject': ['zipObj']
+};
+
+/** Used to track methods that skip `_.rearg`. */
+exports.skipRearg = {
+  'assign': true,
+  'assignIn': true,
+  'concat': true,
+  'difference': true,
+  'matchesProperty': true,
+  'merge': true,
+  'random': true,
+  'range': true,
+  'rangeRight': true,
+  'zip': true,
+  'zipObject': true
+};