diff --git a/src/form-validation.ts b/src/form-validation.ts
index 6260c00..a03063a 100644
--- a/src/form-validation.ts
+++ b/src/form-validation.ts
@@ -19,7 +19,8 @@ import {
 } from './validation-engine';
 import {
   hasFieldIdArrayValidator,
-  getBaseFieldIdFromArrayField,
+  formatFieldForArrayField,
+  get,
 } from './helpers';
 
 export class FormValidation {
@@ -55,12 +56,19 @@ export class FormValidation {
     value: any,
     values?: any
   ): Promise<ValidationResult | { [fieldId: string]: ValidationResult }> => {
-    const id = hasFieldIdArrayValidator(fieldId, this.fieldSchema)
-      ? getBaseFieldIdFromArrayField(fieldId)
-      : fieldId;
+    const field = hasFieldIdArrayValidator(fieldId, this.fieldSchema)
+      ? formatFieldForArrayField(fieldId, value)
+      : { id: fieldId, value };
 
-    return validateField(id, value, values, this.fieldSchema).then(
-      mapInternalValidationResultToValidationResult
+    return validateField(field.id, field.value, values, this.fieldSchema).then(
+      (internalValidationResult) => {
+        const validationResult = mapInternalValidationResultToValidationResult(
+          internalValidationResult
+        );
+        return fieldId !== field.id
+          ? get(validationResult, fieldId)
+          : validationResult;
+      }
     );
   };
 
diff --git a/src/helpers/helpers.spec.ts b/src/helpers/helpers.spec.ts
index 11ee891..9fac237 100644
--- a/src/helpers/helpers.spec.ts
+++ b/src/helpers/helpers.spec.ts
@@ -11,7 +11,7 @@ import {
   reduceAsync,
   isFieldIdInSchema,
   hasFieldIdArrayValidator,
-  getBaseFieldIdFromArrayField,
+  formatFieldForArrayField,
 } from './helpers';
 
 describe('safeArrayLength', () => {
@@ -1088,59 +1088,121 @@ describe('hasFieldIdArrayValidator', () => {
   });
 });
 
-describe('getBaseFieldIdFromArrayField', () => {
-  it('should return empty string when it feeds fieldId equals undefined', () => {
+describe('formatFieldForArrayField', () => {
+  it('should return empty string when it feeds fieldId and value equals undefined', () => {
     // Arrange
     const fieldId: string = undefined;
+    const value: string = undefined;
 
     // Act
-    const result = getBaseFieldIdFromArrayField(fieldId);
+    const result = formatFieldForArrayField(fieldId, value);
 
     // Assert
-    expect(result).toEqual('');
+    const expectedResult = {
+      id: '',
+      value: undefined,
+    };
+    expect(result).toEqual(expectedResult);
   });
 
-  it('should return empty string when it feeds fieldId equals null', () => {
+  it('should return empty string when it feeds fieldId and value equals null', () => {
     // Arrange
     const fieldId: string = null;
+    const value: string = null;
 
     // Act
-    const result = getBaseFieldIdFromArrayField(fieldId);
+    const result = formatFieldForArrayField(fieldId, value);
 
     // Assert
-    expect(result).toEqual('');
+    const expectedResult = {
+      id: '',
+      value: undefined,
+    };
+    expect(result).toEqual(expectedResult);
   });
 
-  it('should return empty string when it feeds fieldId equals empty string', () => {
+  it('should return empty string when it feeds fieldId equals empty string and value equals undefined', () => {
     // Arrange
     const fieldId: string = '';
+    const value: string = undefined;
 
     // Act
-    const result = getBaseFieldIdFromArrayField(fieldId);
+    const result = formatFieldForArrayField(fieldId, value);
 
     // Assert
-    expect(result).toEqual('');
+    const expectedResult = {
+      id: '',
+      value: undefined,
+    };
+    expect(result).toEqual(expectedResult);
   });
 
-  it('should return empty string when it feeds fieldId without array syntax', () => {
+  it('should return empty string when it feeds fieldId without array syntax and value equals undefined', () => {
     // Arrange
     const fieldId: string = 'test-field.name';
+    const value: string = undefined;
 
     // Act
-    const result = getBaseFieldIdFromArrayField(fieldId);
+    const result = formatFieldForArrayField(fieldId, value);
 
     // Assert
-    expect(result).toEqual('');
+    const expectedResult = {
+      id: 'test-field',
+      value: {
+        name: undefined,
+      },
+    };
+    expect(result).toEqual(expectedResult);
   });
 
-  it('should return baseFieldId when it feeds fieldId with array syntax', () => {
+  it('should return baseFieldId when it feeds fieldId with array syntax and value equals undefined', () => {
     // Arrange
-    const fieldId: string = 'test-fields[234].name';
+    const fieldId: string = 'test-fields[2].name';
+    const value: string = undefined;
 
     // Act
-    const result = getBaseFieldIdFromArrayField(fieldId);
+    const result = formatFieldForArrayField(fieldId, value);
 
     // Assert
-    expect(result).toEqual('test-fields');
+    const expectedResult = {
+      id: 'test-fields',
+      value: [
+        undefined,
+        undefined,
+        {
+          name: undefined,
+        },
+      ],
+    };
+    expect(result).toEqual(expectedResult);
+  });
+
+  it('should return baseFieldId when it feeds fieldId with array syntax and value with value', () => {
+    // Arrange
+    const fieldId: string = 'test-fields[2].nested.field[1].name';
+    const value: string = 'test';
+
+    // Act
+    const result = formatFieldForArrayField(fieldId, value);
+
+    // Assert
+    const expectedResult = {
+      id: 'test-fields',
+      value: [
+        undefined,
+        undefined,
+        {
+          nested: {
+            field: [
+              undefined,
+              {
+                name: 'test',
+              },
+            ],
+          },
+        },
+      ],
+    };
+    expect(result).toEqual(expectedResult);
   });
 });
diff --git a/src/helpers/helpers.ts b/src/helpers/helpers.ts
index 1a3ea5a..b17a45b 100644
--- a/src/helpers/helpers.ts
+++ b/src/helpers/helpers.ts
@@ -2,6 +2,7 @@ import {
   InternalFieldValidationSchema,
   InternalRecordValidationSchema,
 } from '../model';
+import set from './set';
 
 // TODO: Better naming for this?
 export const safeArrayLength = <T>(collection: T[]) =>
@@ -46,7 +47,12 @@ export const hasFieldIdArrayValidator = (
   schema: InternalFieldValidationSchema
 ): boolean => /\[.*\]/.test(fieldId) && !isFieldIdInSchema(fieldId, schema);
 
-export const getBaseFieldIdFromArrayField = (fieldId: string) => {
-  const [, baseFieldId] = fieldId?.match(/(.*)\[.*\]/) || [];
-  return baseFieldId || '';
+export const formatFieldForArrayField = (fieldId: string, value) => {
+  const formattedValue = set({}, fieldId, value);
+  const keys = Boolean(fieldId) ? Object.keys(formattedValue) : [''];
+  const id = Array.isArray(keys) && keys.length > 0 ? keys[0] : '';
+  return {
+    id,
+    value: formattedValue[id],
+  };
 };
diff --git a/src/helpers/set.js b/src/helpers/set.js
new file mode 100644
index 0000000..6059b00
--- /dev/null
+++ b/src/helpers/set.js
@@ -0,0 +1,1028 @@
+/**
+ * lodash (Custom Build) <https://lodash.com/>
+ * Build: `lodash modularize exports="npm" -o ./`
+ * Copyright jQuery Foundation and other contributors <https://jquery.org/>
+ * Released under MIT license <https://lodash.com/license>
+ * Based on Underscore.js 1.8.3 <http://underscorejs.org/LICENSE>
+ * Copyright Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
+ */
+
+/** Used as the `TypeError` message for "Functions" methods. */
+var FUNC_ERROR_TEXT = 'Expected a function';
+
+/** Used to stand-in for `undefined` hash values. */
+var HASH_UNDEFINED = '__lodash_hash_undefined__';
+
+/** Used as references for various `Number` constants. */
+var INFINITY = 1 / 0,
+  MAX_SAFE_INTEGER = 9007199254740991;
+
+/** `Object#toString` result references. */
+var funcTag = '[object Function]',
+  genTag = '[object GeneratorFunction]',
+  symbolTag = '[object Symbol]';
+
+/** Used to match property names within property paths. */
+var reIsDeepProp = /\.|\[(?:[^[\]]*|(["'])(?:(?!\1)[^\\]|\\.)*?\1)\]/,
+  reIsPlainProp = /^\w*$/,
+  reLeadingDot = /^\./,
+  rePropName = /[^.[\]]+|\[(?:(-?\d+(?:\.\d+)?)|(["'])((?:(?!\2)[^\\]|\\.)*?)\2)\]|(?=(?:\.|\[\])(?:\.|\[\]|$))/g;
+
+/**
+ * Used to match `RegExp`
+ * [syntax characters](http://ecma-international.org/ecma-262/7.0/#sec-patterns).
+ */
+var reRegExpChar = /[\\^$.*+?()[\]{}|]/g;
+
+/** Used to match backslashes in property paths. */
+var reEscapeChar = /\\(\\)?/g;
+
+/** Used to detect host constructors (Safari). */
+var reIsHostCtor = /^\[object .+?Constructor\]$/;
+
+/** Used to detect unsigned integer values. */
+var reIsUint = /^(?:0|[1-9]\d*)$/;
+
+/** Detect free variable `global` from Node.js. */
+var freeGlobal =
+  typeof global == 'object' && global && global.Object === Object && global;
+
+/** Detect free variable `self`. */
+var freeSelf =
+  typeof self == 'object' && self && self.Object === Object && self;
+
+/** Used as a reference to the global object. */
+var root = freeGlobal || freeSelf || Function('return this')();
+
+/**
+ * Gets the value at `key` of `object`.
+ *
+ * @private
+ * @param {Object} [object] The object to query.
+ * @param {string} key The key of the property to get.
+ * @returns {*} Returns the property value.
+ */
+function getValue(object, key) {
+  return object == null ? undefined : object[key];
+}
+
+/**
+ * Checks if `value` is a host object in IE < 9.
+ *
+ * @private
+ * @param {*} value The value to check.
+ * @returns {boolean} Returns `true` if `value` is a host object, else `false`.
+ */
+function isHostObject(value) {
+  // Many host objects are `Object` objects that can coerce to strings
+  // despite having improperly defined `toString` methods.
+  var result = false;
+  if (value != null && typeof value.toString != 'function') {
+    try {
+      result = !!(value + '');
+    } catch (e) {}
+  }
+  return result;
+}
+
+/** Used for built-in method references. */
+var arrayProto = Array.prototype,
+  funcProto = Function.prototype,
+  objectProto = Object.prototype;
+
+/** Used to detect overreaching core-js shims. */
+var coreJsData = root['__core-js_shared__'];
+
+/** Used to detect methods masquerading as native. */
+var maskSrcKey = (function () {
+  var uid = /[^.]+$/.exec(
+    (coreJsData && coreJsData.keys && coreJsData.keys.IE_PROTO) || ''
+  );
+  return uid ? 'Symbol(src)_1.' + uid : '';
+})();
+
+/** Used to resolve the decompiled source of functions. */
+var funcToString = funcProto.toString;
+
+/** Used to check objects for own properties. */
+var hasOwnProperty = objectProto.hasOwnProperty;
+
+/**
+ * Used to resolve the
+ * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)
+ * of values.
+ */
+var objectToString = objectProto.toString;
+
+/** Used to detect if a method is native. */
+var reIsNative = RegExp(
+  '^' +
+    funcToString
+      .call(hasOwnProperty)
+      .replace(reRegExpChar, '\\$&')
+      .replace(
+        /hasOwnProperty|(function).*?(?=\\\()| for .+?(?=\\\])/g,
+        '$1.*?'
+      ) +
+    '$'
+);
+
+/** Built-in value references. */
+var Symbol = root.Symbol,
+  splice = arrayProto.splice;
+
+/* Built-in method references that are verified to be native. */
+var Map = getNative(root, 'Map'),
+  nativeCreate = getNative(Object, 'create');
+
+/** Used to convert symbols to primitives and strings. */
+var symbolProto = Symbol ? Symbol.prototype : undefined,
+  symbolToString = symbolProto ? symbolProto.toString : undefined;
+
+/**
+ * Creates a hash object.
+ *
+ * @private
+ * @constructor
+ * @param {Array} [entries] The key-value pairs to cache.
+ */
+function Hash(entries) {
+  var index = -1,
+    length = entries ? entries.length : 0;
+
+  this.clear();
+  while (++index < length) {
+    var entry = entries[index];
+    this.set(entry[0], entry[1]);
+  }
+}
+
+/**
+ * Removes all key-value entries from the hash.
+ *
+ * @private
+ * @name clear
+ * @memberOf Hash
+ */
+function hashClear() {
+  this.__data__ = nativeCreate ? nativeCreate(null) : {};
+}
+
+/**
+ * Removes `key` and its value from the hash.
+ *
+ * @private
+ * @name delete
+ * @memberOf Hash
+ * @param {Object} hash The hash to modify.
+ * @param {string} key The key of the value to remove.
+ * @returns {boolean} Returns `true` if the entry was removed, else `false`.
+ */
+function hashDelete(key) {
+  return this.has(key) && delete this.__data__[key];
+}
+
+/**
+ * Gets the hash value for `key`.
+ *
+ * @private
+ * @name get
+ * @memberOf Hash
+ * @param {string} key The key of the value to get.
+ * @returns {*} Returns the entry value.
+ */
+function hashGet(key) {
+  var data = this.__data__;
+  if (nativeCreate) {
+    var result = data[key];
+    return result === HASH_UNDEFINED ? undefined : result;
+  }
+  return hasOwnProperty.call(data, key) ? data[key] : undefined;
+}
+
+/**
+ * Checks if a hash value for `key` exists.
+ *
+ * @private
+ * @name has
+ * @memberOf Hash
+ * @param {string} key The key of the entry to check.
+ * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
+ */
+function hashHas(key) {
+  var data = this.__data__;
+  return nativeCreate
+    ? data[key] !== undefined
+    : hasOwnProperty.call(data, key);
+}
+
+/**
+ * Sets the hash `key` to `value`.
+ *
+ * @private
+ * @name set
+ * @memberOf Hash
+ * @param {string} key The key of the value to set.
+ * @param {*} value The value to set.
+ * @returns {Object} Returns the hash instance.
+ */
+function hashSet(key, value) {
+  var data = this.__data__;
+  data[key] = nativeCreate && value === undefined ? HASH_UNDEFINED : value;
+  return this;
+}
+
+// Add methods to `Hash`.
+Hash.prototype.clear = hashClear;
+Hash.prototype['delete'] = hashDelete;
+Hash.prototype.get = hashGet;
+Hash.prototype.has = hashHas;
+Hash.prototype.set = hashSet;
+
+/**
+ * Creates an list cache object.
+ *
+ * @private
+ * @constructor
+ * @param {Array} [entries] The key-value pairs to cache.
+ */
+function ListCache(entries) {
+  var index = -1,
+    length = entries ? entries.length : 0;
+
+  this.clear();
+  while (++index < length) {
+    var entry = entries[index];
+    this.set(entry[0], entry[1]);
+  }
+}
+
+/**
+ * Removes all key-value entries from the list cache.
+ *
+ * @private
+ * @name clear
+ * @memberOf ListCache
+ */
+function listCacheClear() {
+  this.__data__ = [];
+}
+
+/**
+ * Removes `key` and its value from the list cache.
+ *
+ * @private
+ * @name delete
+ * @memberOf ListCache
+ * @param {string} key The key of the value to remove.
+ * @returns {boolean} Returns `true` if the entry was removed, else `false`.
+ */
+function listCacheDelete(key) {
+  var data = this.__data__,
+    index = assocIndexOf(data, key);
+
+  if (index < 0) {
+    return false;
+  }
+  var lastIndex = data.length - 1;
+  if (index == lastIndex) {
+    data.pop();
+  } else {
+    splice.call(data, index, 1);
+  }
+  return true;
+}
+
+/**
+ * Gets the list cache value for `key`.
+ *
+ * @private
+ * @name get
+ * @memberOf ListCache
+ * @param {string} key The key of the value to get.
+ * @returns {*} Returns the entry value.
+ */
+function listCacheGet(key) {
+  var data = this.__data__,
+    index = assocIndexOf(data, key);
+
+  return index < 0 ? undefined : data[index][1];
+}
+
+/**
+ * Checks if a list cache value for `key` exists.
+ *
+ * @private
+ * @name has
+ * @memberOf ListCache
+ * @param {string} key The key of the entry to check.
+ * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
+ */
+function listCacheHas(key) {
+  return assocIndexOf(this.__data__, key) > -1;
+}
+
+/**
+ * Sets the list cache `key` to `value`.
+ *
+ * @private
+ * @name set
+ * @memberOf ListCache
+ * @param {string} key The key of the value to set.
+ * @param {*} value The value to set.
+ * @returns {Object} Returns the list cache instance.
+ */
+function listCacheSet(key, value) {
+  var data = this.__data__,
+    index = assocIndexOf(data, key);
+
+  if (index < 0) {
+    data.push([key, value]);
+  } else {
+    data[index][1] = value;
+  }
+  return this;
+}
+
+// Add methods to `ListCache`.
+ListCache.prototype.clear = listCacheClear;
+ListCache.prototype['delete'] = listCacheDelete;
+ListCache.prototype.get = listCacheGet;
+ListCache.prototype.has = listCacheHas;
+ListCache.prototype.set = listCacheSet;
+
+/**
+ * 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 ? entries.length : 0;
+
+  this.clear();
+  while (++index < length) {
+    var entry = entries[index];
+    this.set(entry[0], entry[1]);
+  }
+}
+
+/**
+ * Removes all key-value entries from the map.
+ *
+ * @private
+ * @name clear
+ * @memberOf MapCache
+ */
+function mapCacheClear() {
+  this.__data__ = {
+    hash: new Hash(),
+    map: new (Map || ListCache)(),
+    string: new Hash(),
+  };
+}
+
+/**
+ * Removes `key` and its value from the map.
+ *
+ * @private
+ * @name delete
+ * @memberOf MapCache
+ * @param {string} key The key of the value to remove.
+ * @returns {boolean} Returns `true` if the entry was removed, else `false`.
+ */
+function mapCacheDelete(key) {
+  return getMapData(this, key)['delete'](key);
+}
+
+/**
+ * Gets the map value for `key`.
+ *
+ * @private
+ * @name get
+ * @memberOf MapCache
+ * @param {string} key The key of the value to get.
+ * @returns {*} Returns the entry value.
+ */
+function mapCacheGet(key) {
+  return getMapData(this, key).get(key);
+}
+
+/**
+ * Checks if a map value for `key` exists.
+ *
+ * @private
+ * @name has
+ * @memberOf MapCache
+ * @param {string} key The key of the entry to check.
+ * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
+ */
+function mapCacheHas(key) {
+  return getMapData(this, key).has(key);
+}
+
+/**
+ * Sets the map `key` to `value`.
+ *
+ * @private
+ * @name set
+ * @memberOf MapCache
+ * @param {string} key The key of the value to set.
+ * @param {*} value The value to set.
+ * @returns {Object} Returns the map cache instance.
+ */
+function mapCacheSet(key, value) {
+  getMapData(this, key).set(key, value);
+  return this;
+}
+
+// Add methods to `MapCache`.
+MapCache.prototype.clear = mapCacheClear;
+MapCache.prototype['delete'] = mapCacheDelete;
+MapCache.prototype.get = mapCacheGet;
+MapCache.prototype.has = mapCacheHas;
+MapCache.prototype.set = mapCacheSet;
+
+/**
+ * Assigns `value` to `key` of `object` if the existing value is not equivalent
+ * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
+ * for equality comparisons.
+ *
+ * @private
+ * @param {Object} object The object to modify.
+ * @param {string} key The key of the property to assign.
+ * @param {*} value The value to assign.
+ */
+function assignValue(object, key, value) {
+  var objValue = object[key];
+  if (
+    !(hasOwnProperty.call(object, key) && eq(objValue, value)) ||
+    (value === undefined && !(key in object))
+  ) {
+    object[key] = value;
+  }
+}
+
+/**
+ * Gets the index at which the `key` is found in `array` of key-value pairs.
+ *
+ * @private
+ * @param {Array} array The array to inspect.
+ * @param {*} key The key to search for.
+ * @returns {number} Returns the index of the matched value, else `-1`.
+ */
+function assocIndexOf(array, key) {
+  var length = array.length;
+  while (length--) {
+    if (eq(array[length][0], key)) {
+      return length;
+    }
+  }
+  return -1;
+}
+
+/**
+ * The base implementation of `_.isNative` without bad shim checks.
+ *
+ * @private
+ * @param {*} value The value to check.
+ * @returns {boolean} Returns `true` if `value` is a native function,
+ *  else `false`.
+ */
+function baseIsNative(value) {
+  if (!isObject(value) || isMasked(value)) {
+    return false;
+  }
+  var pattern =
+    isFunction(value) || isHostObject(value) ? reIsNative : reIsHostCtor;
+  return pattern.test(toSource(value));
+}
+
+/**
+ * The base implementation of `_.set`.
+ *
+ * @private
+ * @param {Object} object The object to modify.
+ * @param {Array|string} path The path of the property to set.
+ * @param {*} value The value to set.
+ * @param {Function} [customizer] The function to customize path creation.
+ * @returns {Object} Returns `object`.
+ */
+function baseSet(object, path, value, customizer) {
+  if (!isObject(object)) {
+    return object;
+  }
+  path = isKey(path, object) ? [path] : castPath(path);
+
+  var index = -1,
+    length = path.length,
+    lastIndex = length - 1,
+    nested = object;
+
+  while (nested != null && ++index < length) {
+    var key = toKey(path[index]),
+      newValue = value;
+
+    if (index != lastIndex) {
+      var objValue = nested[key];
+      newValue = customizer ? customizer(objValue, key, nested) : undefined;
+      if (newValue === undefined) {
+        newValue = isObject(objValue)
+          ? objValue
+          : isIndex(path[index + 1])
+          ? []
+          : {};
+      }
+    }
+    assignValue(nested, key, newValue);
+    nested = nested[key];
+  }
+  return object;
+}
+
+/**
+ * The base implementation of `_.toString` which doesn't convert nullish
+ * values to empty strings.
+ *
+ * @private
+ * @param {*} value The value to process.
+ * @returns {string} Returns the string.
+ */
+function baseToString(value) {
+  // Exit early for strings to avoid a performance hit in some environments.
+  if (typeof value == 'string') {
+    return value;
+  }
+  if (isSymbol(value)) {
+    return symbolToString ? symbolToString.call(value) : '';
+  }
+  var result = value + '';
+  return result == '0' && 1 / value == -INFINITY ? '-0' : result;
+}
+
+/**
+ * Casts `value` to a path array if it's not one.
+ *
+ * @private
+ * @param {*} value The value to inspect.
+ * @returns {Array} Returns the cast property path array.
+ */
+function castPath(value) {
+  return isArray(value) ? value : stringToPath(value);
+}
+
+/**
+ * Gets the data for `map`.
+ *
+ * @private
+ * @param {Object} map The map to query.
+ * @param {string} key The reference key.
+ * @returns {*} Returns the map data.
+ */
+function getMapData(map, key) {
+  var data = map.__data__;
+  return isKeyable(key)
+    ? data[typeof key == 'string' ? 'string' : 'hash']
+    : data.map;
+}
+
+/**
+ * Gets the native function at `key` of `object`.
+ *
+ * @private
+ * @param {Object} object The object to query.
+ * @param {string} key The key of the method to get.
+ * @returns {*} Returns the function if it's native, else `undefined`.
+ */
+function getNative(object, key) {
+  var value = getValue(object, key);
+  return baseIsNative(value) ? value : undefined;
+}
+
+/**
+ * Checks if `value` is a valid array-like index.
+ *
+ * @private
+ * @param {*} value The value to check.
+ * @param {number} [length=MAX_SAFE_INTEGER] The upper bounds of a valid index.
+ * @returns {boolean} Returns `true` if `value` is a valid index, else `false`.
+ */
+function isIndex(value, length) {
+  length = length == null ? MAX_SAFE_INTEGER : length;
+  return (
+    !!length &&
+    (typeof value == 'number' || reIsUint.test(value)) &&
+    value > -1 &&
+    value % 1 == 0 &&
+    value < length
+  );
+}
+
+/**
+ * Checks if `value` is a property name and not a property path.
+ *
+ * @private
+ * @param {*} value The value to check.
+ * @param {Object} [object] The object to query keys on.
+ * @returns {boolean} Returns `true` if `value` is a property name, else `false`.
+ */
+function isKey(value, object) {
+  if (isArray(value)) {
+    return false;
+  }
+  var type = typeof value;
+  if (
+    type == 'number' ||
+    type == 'symbol' ||
+    type == 'boolean' ||
+    value == null ||
+    isSymbol(value)
+  ) {
+    return true;
+  }
+  return (
+    reIsPlainProp.test(value) ||
+    !reIsDeepProp.test(value) ||
+    (object != null && value in Object(object))
+  );
+}
+
+/**
+ * Checks if `value` is suitable for use as unique object key.
+ *
+ * @private
+ * @param {*} value The value to check.
+ * @returns {boolean} Returns `true` if `value` is suitable, else `false`.
+ */
+function isKeyable(value) {
+  var type = typeof value;
+  return type == 'string' ||
+    type == 'number' ||
+    type == 'symbol' ||
+    type == 'boolean'
+    ? value !== '__proto__'
+    : value === null;
+}
+
+/**
+ * Checks if `func` has its source masked.
+ *
+ * @private
+ * @param {Function} func The function to check.
+ * @returns {boolean} Returns `true` if `func` is masked, else `false`.
+ */
+function isMasked(func) {
+  return !!maskSrcKey && maskSrcKey in func;
+}
+
+/**
+ * Converts `string` to a property path array.
+ *
+ * @private
+ * @param {string} string The string to convert.
+ * @returns {Array} Returns the property path array.
+ */
+var stringToPath = memoize(function (string) {
+  string = toString(string);
+
+  var result = [];
+  if (reLeadingDot.test(string)) {
+    result.push('');
+  }
+  string.replace(rePropName, function (match, number, quote, string) {
+    result.push(quote ? string.replace(reEscapeChar, '$1') : number || match);
+  });
+  return result;
+});
+
+/**
+ * Converts `value` to a string key if it's not a string or symbol.
+ *
+ * @private
+ * @param {*} value The value to inspect.
+ * @returns {string|symbol} Returns the key.
+ */
+function toKey(value) {
+  if (typeof value == 'string' || isSymbol(value)) {
+    return value;
+  }
+  var result = value + '';
+  return result == '0' && 1 / value == -INFINITY ? '-0' : result;
+}
+
+/**
+ * Converts `func` to its source code.
+ *
+ * @private
+ * @param {Function} func The function to process.
+ * @returns {string} Returns the source code.
+ */
+function toSource(func) {
+  if (func != null) {
+    try {
+      return funcToString.call(func);
+    } catch (e) {}
+    try {
+      return func + '';
+    } catch (e) {}
+  }
+  return '';
+}
+
+/**
+ * Creates a function that memoizes the result of `func`. If `resolver` is
+ * provided, it determines the cache key for storing the result based on the
+ * arguments provided to the memoized function. By default, the first argument
+ * provided to the memoized function is used as the map cache key. The `func`
+ * is invoked with the `this` binding of the memoized function.
+ *
+ * **Note:** The cache is exposed as the `cache` property on the memoized
+ * function. Its creation may be customized by replacing the `_.memoize.Cache`
+ * constructor with one whose instances implement the
+ * [`Map`](http://ecma-international.org/ecma-262/7.0/#sec-properties-of-the-map-prototype-object)
+ * method interface of `delete`, `get`, `has`, and `set`.
+ *
+ * @static
+ * @memberOf _
+ * @since 0.1.0
+ * @category Function
+ * @param {Function} func The function to have its output memoized.
+ * @param {Function} [resolver] The function to resolve the cache key.
+ * @returns {Function} Returns the new memoized function.
+ * @example
+ *
+ * var object = { 'a': 1, 'b': 2 };
+ * var other = { 'c': 3, 'd': 4 };
+ *
+ * var values = _.memoize(_.values);
+ * values(object);
+ * // => [1, 2]
+ *
+ * values(other);
+ * // => [3, 4]
+ *
+ * object.a = 2;
+ * values(object);
+ * // => [1, 2]
+ *
+ * // Modify the result cache.
+ * values.cache.set(object, ['a', 'b']);
+ * values(object);
+ * // => ['a', 'b']
+ *
+ * // Replace `_.memoize.Cache`.
+ * _.memoize.Cache = WeakMap;
+ */
+function memoize(func, resolver) {
+  if (
+    typeof func != 'function' ||
+    (resolver && typeof resolver != 'function')
+  ) {
+    throw new TypeError(FUNC_ERROR_TEXT);
+  }
+  var memoized = function () {
+    var args = arguments,
+      key = resolver ? resolver.apply(this, args) : args[0],
+      cache = memoized.cache;
+
+    if (cache.has(key)) {
+      return cache.get(key);
+    }
+    var result = func.apply(this, args);
+    memoized.cache = cache.set(key, result);
+    return result;
+  };
+  memoized.cache = new (memoize.Cache || MapCache)();
+  return memoized;
+}
+
+// Assign cache to `_.memoize`.
+memoize.Cache = MapCache;
+
+/**
+ * Performs a
+ * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
+ * comparison between two values to determine if they are equivalent.
+ *
+ * @static
+ * @memberOf _
+ * @since 4.0.0
+ * @category Lang
+ * @param {*} value The value to compare.
+ * @param {*} other The other value to compare.
+ * @returns {boolean} Returns `true` if the values are equivalent, else `false`.
+ * @example
+ *
+ * var object = { 'a': 1 };
+ * var other = { 'a': 1 };
+ *
+ * _.eq(object, object);
+ * // => true
+ *
+ * _.eq(object, other);
+ * // => false
+ *
+ * _.eq('a', 'a');
+ * // => true
+ *
+ * _.eq('a', Object('a'));
+ * // => false
+ *
+ * _.eq(NaN, NaN);
+ * // => true
+ */
+function eq(value, other) {
+  return value === other || (value !== value && other !== other);
+}
+
+/**
+ * Checks if `value` is classified as an `Array` object.
+ *
+ * @static
+ * @memberOf _
+ * @since 0.1.0
+ * @category Lang
+ * @param {*} value The value to check.
+ * @returns {boolean} Returns `true` if `value` is an array, else `false`.
+ * @example
+ *
+ * _.isArray([1, 2, 3]);
+ * // => true
+ *
+ * _.isArray(document.body.children);
+ * // => false
+ *
+ * _.isArray('abc');
+ * // => false
+ *
+ * _.isArray(_.noop);
+ * // => false
+ */
+var isArray = Array.isArray;
+
+/**
+ * Checks if `value` is classified as a `Function` object.
+ *
+ * @static
+ * @memberOf _
+ * @since 0.1.0
+ * @category Lang
+ * @param {*} value The value to check.
+ * @returns {boolean} Returns `true` if `value` is a function, else `false`.
+ * @example
+ *
+ * _.isFunction(_);
+ * // => true
+ *
+ * _.isFunction(/abc/);
+ * // => false
+ */
+function isFunction(value) {
+  // The use of `Object#toString` avoids issues with the `typeof` operator
+  // in Safari 8-9 which returns 'object' for typed array and other constructors.
+  var tag = isObject(value) ? objectToString.call(value) : '';
+  return tag == funcTag || tag == genTag;
+}
+
+/**
+ * Checks if `value` is the
+ * [language type](http://www.ecma-international.org/ecma-262/7.0/#sec-ecmascript-language-types)
+ * of `Object`. (e.g. arrays, functions, objects, regexes, `new Number(0)`, and `new String('')`)
+ *
+ * @static
+ * @memberOf _
+ * @since 0.1.0
+ * @category Lang
+ * @param {*} value The value to check.
+ * @returns {boolean} Returns `true` if `value` is an object, else `false`.
+ * @example
+ *
+ * _.isObject({});
+ * // => true
+ *
+ * _.isObject([1, 2, 3]);
+ * // => true
+ *
+ * _.isObject(_.noop);
+ * // => true
+ *
+ * _.isObject(null);
+ * // => false
+ */
+function isObject(value) {
+  var type = typeof value;
+  return !!value && (type == 'object' || type == 'function');
+}
+
+/**
+ * Checks if `value` is object-like. A value is object-like if it's not `null`
+ * and has a `typeof` result of "object".
+ *
+ * @static
+ * @memberOf _
+ * @since 4.0.0
+ * @category Lang
+ * @param {*} value The value to check.
+ * @returns {boolean} Returns `true` if `value` is object-like, else `false`.
+ * @example
+ *
+ * _.isObjectLike({});
+ * // => true
+ *
+ * _.isObjectLike([1, 2, 3]);
+ * // => true
+ *
+ * _.isObjectLike(_.noop);
+ * // => false
+ *
+ * _.isObjectLike(null);
+ * // => false
+ */
+function isObjectLike(value) {
+  return !!value && typeof value == 'object';
+}
+
+/**
+ * Checks if `value` is classified as a `Symbol` primitive or object.
+ *
+ * @static
+ * @memberOf _
+ * @since 4.0.0
+ * @category Lang
+ * @param {*} value The value to check.
+ * @returns {boolean} Returns `true` if `value` is a symbol, else `false`.
+ * @example
+ *
+ * _.isSymbol(Symbol.iterator);
+ * // => true
+ *
+ * _.isSymbol('abc');
+ * // => false
+ */
+function isSymbol(value) {
+  return (
+    typeof value == 'symbol' ||
+    (isObjectLike(value) && objectToString.call(value) == symbolTag)
+  );
+}
+
+/**
+ * Converts `value` to a string. An empty string is returned for `null`
+ * and `undefined` values. The sign of `-0` is preserved.
+ *
+ * @static
+ * @memberOf _
+ * @since 4.0.0
+ * @category Lang
+ * @param {*} value The value to process.
+ * @returns {string} Returns the string.
+ * @example
+ *
+ * _.toString(null);
+ * // => ''
+ *
+ * _.toString(-0);
+ * // => '-0'
+ *
+ * _.toString([1, 2, 3]);
+ * // => '1,2,3'
+ */
+function toString(value) {
+  return value == null ? '' : baseToString(value);
+}
+
+/**
+ * Sets the value at `path` of `object`. If a portion of `path` doesn't exist,
+ * it's created. Arrays are created for missing index properties while objects
+ * are created for all other missing properties. Use `_.setWith` to customize
+ * `path` creation.
+ *
+ * **Note:** This method mutates `object`.
+ *
+ * @static
+ * @memberOf _
+ * @since 3.7.0
+ * @category Object
+ * @param {Object} object The object to modify.
+ * @param {Array|string} path The path of the property to set.
+ * @param {*} value The value to set.
+ * @returns {Object} Returns `object`.
+ * @example
+ *
+ * var object = { 'a': [{ 'b': { 'c': 3 } }] };
+ *
+ * _.set(object, 'a[0].b.c', 4);
+ * console.log(object.a[0].b.c);
+ * // => 4
+ *
+ * _.set(object, ['x', '0', 'y', 'z'], 5);
+ * console.log(object.x[0].y.z);
+ * // => 5
+ */
+function set(object, path, value) {
+  return object == null ? object : baseSet(object, path, value);
+}
+
+module.exports = set;