Enabled TS strict mode (#492)

* Enabled TS strict mode

It felt right to upgrade TypeScript and TSLint to the latest versions for this.

Fixes #461

* Updated package-lock.json to latest; ran npm audit fix

Gruntfile.js

@@ -320,12 +320,15 @@ module.exports = function(grunt) {
             'cyclomatic-complexity': true,              // too strict
             'deprecation': true,                        // requires type checking
             'file-header': true,                        // no need
+            'file-name-casing': true,                   // too strict
             'interface-name': true,                     // no need
             'match-default-export-name': true,          // requires type checking
             'max-classes-per-file': true,               // no need
             'max-file-line-count': true,                // no need
             'member-ordering': true,                    // too strict
             'newline-before-return': true,              // kind of a silly rule
+            'newline-per-chained-call': true,           // too strict
+            'no-dynamic-delete': true,                  // too strict
             'no-empty-line-after-opening-brace': true,  // too strict
             'no-inferrable-types': true,                // we prefer the opposite
             'no-multiline-string': true,                // too strict
@@ -339,6 +342,7 @@ module.exports = function(grunt) {
             'prefer-conditional-expression': true,      // not sure if this is needed
             'prefer-switch': true,                      // no need
             'prefer-template': true,                    // rule does not handle multi-line strings nicely
+            'prefer-while': true,                       // not sure if this is needed
             'return-undefined': true,                   // requires type checking
             'type-literal-delimiter': true,             // not sure if this is needed
             'typedef-whitespace': true,                 // too strict

additional_rule_metadata.json

@@ -57,6 +57,14 @@
     "group": "Whitespace",
     "commonWeaknessEnumeration": "710"
   },
+  "file-name-casing": {
+    "issueClass": "Non-SDL",
+    "issueType": "Warning",
+    "severity": "Moderate",
+    "level": "Opportunity for Excellence",
+    "group": "Clarity",
+    "commonWeaknessEnumeration": "398, 710"
+  },
   "forin": {
     "issueClass": "Non-SDL",
     "issueType": "Warning",
@@ -156,6 +164,14 @@
     "group": "Clarity",
     "commonWeaknessEnumeration": "710"
   },
+  "newline-per-chained-call": {
+    "issueClass": "Non-SDL",
+    "issueType": "Warning",
+    "severity": "Moderate",
+    "level": "Opportunity for Excellence",
+    "group": "Clarity",
+    "commonWeaknessEnumeration": "398, 710"
+  },
   "no-angle-bracket-type-assertion": {
     "issueClass": "Ignored",
     "issueType": "Warning",
@@ -254,6 +270,14 @@
     "group": "Correctness",
     "commonWeaknessEnumeration": "398"
   },
+  "no-dynamic-delete": {
+    "issueClass": "Non-SDL",
+    "issueType": "Warning",
+    "severity": "Moderate",
+    "level": "Opportunity for Excellence",
+    "group": "Clarity",
+    "commonWeaknessEnumeration": "398, 710"
+  },
   "no-empty": {
     "issueClass": "Non-SDL",
     "issueType": "Warning",
@@ -498,6 +522,22 @@
     "group": "Clarity",
     "commonWeaknessEnumeration": "398, 710"
   },
+  "prefer-readonly": {
+    "issueClass": "Non-SDL",
+    "issueType": "Warning",
+    "severity": "Moderate",
+    "level": "Opportunity for Excellence",
+    "group": "Clarity",
+    "commonWeaknessEnumeration": "398, 710"
+  },
+  "prefer-while": {
+    "issueClass": "Non-SDL",
+    "issueType": "Warning",
+    "severity": "Moderate",
+    "level": "Opportunity for Excellence",
+    "group": "Clarity",
+    "commonWeaknessEnumeration": "398, 710"
+  },
   "quotemark": {
     "issueClass": "Non-SDL",
     "issueType": "Warning",