chore(deps): refactor for latest Lodash compat. Also trims vulns.

Closes z0mt3c#86
Closes z0mt3c#87

TODO.md

@@ -1,4 +1,16 @@
-- Dependency updates (esp. vulns) -- see https://github.com/z0mt3c/node-restify-validation/pull/87
+- Dependency updates (esp. vulns)
+
+Lodash:
+
+Closes https://github.com/z0mt3c/node-restify-validation/issues/86
+Closes https://github.com/z0mt3c/node-restify-validation/pull/87
+
+Mocha, Supertest (high priority)
+Coveralls (removal? Is it even used?)
+Should
+Sinon
+Validator (will likely require TONS of updates)
+
 - Ensure all Validator.js features are properly exposed and use proper messaging
 - Code cleanup within lib (ES2015+, strict mode)
 - Migrate from Mocha / should to Jest
@@ -7,5 +19,5 @@
 - Setup Travis CI; check badge
 - Migrate from Coveralls to Codecov; check badge
 - Add Dependabot badges etc.
-- Restore all required parts of README (conditional checks, etc.)
+- Restore when applicable stripped parts of README (conditional checks, etc.)
 - Deprecate content/resources/queries in favor of body/params/query

lib/conditions.js

@@ -5,7 +5,7 @@ module.exports.paramMatches = function (params) {
   return conditionalChecker(params, function (matches, value) {
     var result
     if (_.isArray(matches)) {
-      result = _.contains(matches, value)
+      result = _.includes(matches, value)
     } else {
       result = _.isEqual(matches, value)
     }

lib/validators.js

@@ -76,7 +76,7 @@ var validators = (module.exports = {
         var renamedElements = {}
         var keyError = _.reduce(
           submittedValue,
-          function (previousError, value, key) {
+          (previousError, value, key) => {
             if (previousError) {
               return previousError
             }
@@ -92,8 +92,7 @@ var validators = (module.exports = {
             }
             return validateKey.error
           },
-          false,
-          this
+          false
         )
         // Merge renamed elements
         _.extend(submittedValue, renamedElements)
@@ -155,7 +154,7 @@ function validateCollectionValues(context, collection, validationRules) {
 }
 
 var notSupported = ['len', 'notNull', 'isNull', 'notEmpty']
-var validatorFunctionKeys = _.difference(_.functions(validator), notSupported)
+var validatorFunctionKeys = _.difference(_.functionsIn(validator), notSupported)
 
 _.each(validatorFunctionKeys, function (element, index, array) {
   if (!_.has(validators, element)) {

package.json

@@ -38,7 +38,7 @@
     "node": ">= 8"
   },
   "dependencies": {
-    "lodash": "3.10.x",
+    "lodash": "^4.17.21",
     "validator": "3.22.x"
   },
   "peerDependencies": {