Development (#5)

* Extensive date/time formatting and parsing options added, highly compatible with Moment.js, and covering more ISO-8601 formats.
* Broad internationalization/localization support.
* Extensive API documentation.
* Live and optionally automatic, tz database updates.
* Date/time sorting, min/max, and comparison options.
* Support for both ISO and locale-specific week-based calendar dates, e.g. 2021-W23-2.
* YMDDate and DateTime interfaces expanded with both short and long field names.
* Improved date/time validation.
* Mutable and immutable DateTime instances.
* Improved DateTime.add() method
* New DateTime manipulation methods roll(), set(), startOf(), and endOf().
* DATELESS and ZONELESS DateTime instances.
* Improved support for ESM, CommonJS, ES2015, ES5.
* Code organized to facilitate tree-shaking and Angular optimizations.
* Updated to 2021a.

Author: kshetline

.eslintrc.json

@@ -42,6 +42,7 @@
       }
     ],
     "curly": "off",
+    "@typescript-eslint/explicit-function-return-type": "error",
     "indent": "off",
     "@typescript-eslint/indent": [
       "error",
@@ -54,12 +55,14 @@
         "ignoreComments": true,
         "ignoredNodes": [
           "ClassProperty[value]",
-          "NewExpression[arguments] :expression *"
+          "NewExpression[arguments] :expression *",
+          "TSUnionType"
         ],
         "ObjectExpression": "first",
         "SwitchCase": 1
       }
     ],
+    "guard-for-in": "error",
     "key-spacing": "off",
     "multiline-ternary": "off",
     "no-control-regex": "off",
@@ -69,6 +72,7 @@
     "no-multi-spaces": "off",
     "no-new": "off",
     "no-return-assign": "off",
+    "no-unexpected-multiline": "off",
     "no-unused-expressions": "off",
     "no-useless-constructor": "off",
     "@typescript-eslint/no-useless-constructor": "error",
@@ -113,5 +117,13 @@
         "exceptRange": true
       }
     ]
-  }
+  },
+  "overrides": [
+    {
+      "files": ["*.js", "*.cjs"],
+      "rules": {
+        "@typescript-eslint/explicit-function-return-type": "off"
+      }
+    }
+  ]
 }

.markdownlint.json

@@ -0,0 +1,7 @@
+{
+  "default": true,
+  "MD004": false,
+  "MD007": false,
+  "MD013": false,
+  "MD033": false
+}

.npmignore

@@ -5,6 +5,7 @@
 /.eslintrc.json
 /.eslintignore
 /docs
+/img
 /.nyc_output
 *.js.map
 *.spec.d.ts

.vscode/settings.json

@@ -0,0 +1,28 @@
+{
+  "cSpell.words": [
+    "AEST",
+    "DDTHH",
+    "Februar",
+    "MILLI",
+    "SSSZ",
+    "Subzones",
+    "ampm",
+    "dateandtime",
+    "dowmi",
+    "endof",
+    "gettersetters",
+    "getterssetters",
+    "helmikuuta",
+    "intldatetimeformat",
+    "juin",
+    "minmax",
+    "momentjs",
+    "startof",
+    "timezone's",
+    "ttime",
+    "tubulartime",
+    "ymddate"
+  ],
+  "markdown.extension.tableFormatter.enabled": false,
+  "markdown.extension.toc.levels": "2..6"
+}