Modularize master branch.

_DataView.js

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+import getNative from './_getNative.js';
+import root from './_root.js';
+
+/* Built-in method references that are verified to be native. */
+var DataView = getNative(root, 'DataView');
+
+export default DataView;

_Hash.js

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+import hashClear from './_hashClear.js';
+import hashDelete from './_hashDelete.js';
+import hashGet from './_hashGet.js';
+import hashHas from './_hashHas.js';
+import hashSet from './_hashSet.js';
+
+/**
+ * Creates a hash object.
+ *
+ * @private
+ * @constructor
+ * @param {Array} [entries] The key-value pairs to cache.
+ */
+function Hash(entries) {
+  var index = -1,
+      length = entries == null ? 0 : entries.length;
+
+  this.clear();
+  while (++index < length) {
+    var entry = entries[index];
+    this.set(entry[0], entry[1]);
+  }
+}
+
+// Add methods to `Hash`.
+Hash.prototype.clear = hashClear;
+Hash.prototype['delete'] = hashDelete;
+Hash.prototype.get = hashGet;
+Hash.prototype.has = hashHas;
+Hash.prototype.set = hashSet;
+
+export default Hash;

_ListCache.js

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+import listCacheClear from './_listCacheClear.js';
+import listCacheDelete from './_listCacheDelete.js';
+import listCacheGet from './_listCacheGet.js';
+import listCacheHas from './_listCacheHas.js';
+import listCacheSet from './_listCacheSet.js';
+
+/**
+ * Creates an list cache object.
+ *
+ * @private
+ * @constructor
+ * @param {Array} [entries] The key-value pairs to cache.
+ */
+function ListCache(entries) {
+  var index = -1,
+      length = entries == null ? 0 : entries.length;
+
+  this.clear();
+  while (++index < length) {
+    var entry = entries[index];
+    this.set(entry[0], entry[1]);
+  }
+}
+
+// Add methods to `ListCache`.
+ListCache.prototype.clear = listCacheClear;
+ListCache.prototype['delete'] = listCacheDelete;
+ListCache.prototype.get = listCacheGet;
+ListCache.prototype.has = listCacheHas;
+ListCache.prototype.set = listCacheSet;
+
+export default ListCache;

_Map.js

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+import getNative from './_getNative.js';
+import root from './_root.js';
+
+/* Built-in method references that are verified to be native. */
+var Map = getNative(root, 'Map');
+
+export default Map;

_MapCache.js

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+import mapCacheClear from './_mapCacheClear.js';
+import mapCacheDelete from './_mapCacheDelete.js';
+import mapCacheGet from './_mapCacheGet.js';
+import mapCacheHas from './_mapCacheHas.js';
+import mapCacheSet from './_mapCacheSet.js';
+
+/**
+ * Creates a map cache object to store key-value pairs.
+ *
+ * @private
+ * @constructor
+ * @param {Array} [entries] The key-value pairs to cache.
+ */
+function MapCache(entries) {
+  var index = -1,
+      length = entries == null ? 0 : entries.length;
+
+  this.clear();
+  while (++index < length) {
+    var entry = entries[index];
+    this.set(entry[0], entry[1]);
+  }
+}
+
+// Add methods to `MapCache`.
+MapCache.prototype.clear = mapCacheClear;
+MapCache.prototype['delete'] = mapCacheDelete;
+MapCache.prototype.get = mapCacheGet;
+MapCache.prototype.has = mapCacheHas;
+MapCache.prototype.set = mapCacheSet;
+
+export default MapCache;

_Promise.js

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+import getNative from './_getNative.js';
+import root from './_root.js';
+
+/* Built-in method references that are verified to be native. */
+var Promise = getNative(root, 'Promise');
+
+export default Promise;

_Set.js

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+import getNative from './_getNative.js';
+import root from './_root.js';
+
+/* Built-in method references that are verified to be native. */
+var Set = getNative(root, 'Set');
+
+export default Set;

_SetCache.js

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+import MapCache from './_MapCache.js';
+import setCacheAdd from './_setCacheAdd.js';
+import setCacheHas from './_setCacheHas.js';
+
+/**
+ *
+ * Creates an array cache object to store unique values.
+ *
+ * @private
+ * @constructor
+ * @param {Array} [values] The values to cache.
+ */
+function SetCache(values) {
+  var index = -1,
+      length = values == null ? 0 : values.length;
+
+  this.__data__ = new MapCache;
+  while (++index < length) {
+    this.add(values[index]);
+  }
+}
+
+// Add methods to `SetCache`.
+SetCache.prototype.add = SetCache.prototype.push = setCacheAdd;
+SetCache.prototype.has = setCacheHas;
+
+export default SetCache;

_Stack.js

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+import ListCache from './_ListCache.js';
+import stackClear from './_stackClear.js';
+import stackDelete from './_stackDelete.js';
+import stackGet from './_stackGet.js';
+import stackHas from './_stackHas.js';
+import stackSet from './_stackSet.js';
+
+/**
+ * Creates a stack cache object to store key-value pairs.
+ *
+ * @private
+ * @constructor
+ * @param {Array} [entries] The key-value pairs to cache.
+ */
+function Stack(entries) {
+  var data = this.__data__ = new ListCache(entries);
+  this.size = data.size;
+}
+
+// Add methods to `Stack`.
+Stack.prototype.clear = stackClear;
+Stack.prototype['delete'] = stackDelete;
+Stack.prototype.get = stackGet;
+Stack.prototype.has = stackHas;
+Stack.prototype.set = stackSet;
+
+export default Stack;

_Symbol.js

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+import root from './_root.js';
+
+/** Built-in value references. */
+var Symbol = root.Symbol;
+
+export default Symbol;

_Uint8Array.js

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+import root from './_root.js';
+
+/** Built-in value references. */
+var Uint8Array = root.Uint8Array;
+
+export default Uint8Array;

_WeakMap.js

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+import getNative from './_getNative.js';
+import root from './_root.js';
+
+/* Built-in method references that are verified to be native. */
+var WeakMap = getNative(root, 'WeakMap');
+
+export default WeakMap;

_addMapEntry.js

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+/**
+ * Adds the key-value `pair` to `map`.
+ *
+ * @private
+ * @param {Object} map The map to modify.
+ * @param {Array} pair The key-value pair to add.
+ * @returns {Object} Returns `map`.
+ */
+function addMapEntry(map, pair) {
+  // Don't return `map.set` because it's not chainable in IE 11.
+  map.set(pair[0], pair[1]);
+  return map;
+}
+
+export default addMapEntry;

_addSetEntry.js

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+/**
+ * Adds `value` to `set`.
+ *
+ * @private
+ * @param {Object} set The set to modify.
+ * @param {*} value The value to add.
+ * @returns {Object} Returns `set`.
+ */
+function addSetEntry(set, value) {
+  // Don't return `set.add` because it's not chainable in IE 11.
+  set.add(value);
+  return set;
+}
+
+export default addSetEntry;