Updated code style and dependencies, added unit tests

doc/README.md

@@ -1,4 +1,6 @@
-> **[JScrewIt](README.md)**
+**[JScrewIt](README.md)**
+
+[Globals](README.md)
 
 ## Index
 

doc/interfaces/_jscrewit_.customfeature.md

@@ -1,6 +1,6 @@
-> **[JScrewIt](../README.md)**
+**[JScrewIt](../README.md)**
 
-["jscrewit"](../modules/_jscrewit_.md) / [CustomFeature](_jscrewit_.customfeature.md) /
+[Globals](../README.md) › ["jscrewit"](../modules/_jscrewit_.md) › [CustomFeature](_jscrewit_.customfeature.md)
 
 # Interface: CustomFeature
 
@@ -32,17 +32,17 @@
 
 • **Feature**: *[FeatureConstructor](_jscrewit_.featureconstructor.md)*
 
-*Defined in [feature.d.ts:127](https://github.com/fasttime/JScrewIt/blob/2.10.1/lib/feature.d.ts#L127)*
+*Defined in [feature.d.ts:133](https://github.com/fasttime/JScrewIt/blob/2.10.1/lib/feature.d.ts#L133)*
 
 ___
 
 ###  canonicalNames
 
-• **canonicalNames**: *string[]*
+• **canonicalNames**: *[ElementaryFeatureName](../modules/_jscrewit_.md#elementaryfeaturename)[]*
 
 *Inherited from [Feature](_jscrewit_.feature.md).[canonicalNames](_jscrewit_.feature.md#canonicalnames)*
 
-*Defined in [feature.d.ts:52](https://github.com/fasttime/JScrewIt/blob/2.10.1/lib/feature.d.ts#L52)*
+*Defined in [feature.d.ts:58](https://github.com/fasttime/JScrewIt/blob/2.10.1/lib/feature.d.ts#L58)*
 
 An array of all elementary feature names included in this feature object, without aliases
 and implied features.
@@ -55,7 +55,7 @@ ___
 
 *Inherited from [Feature](_jscrewit_.feature.md).[description](_jscrewit_.feature.md#optional-description)*
 
-*Defined in [feature.d.ts:60](https://github.com/fasttime/JScrewIt/blob/2.10.1/lib/feature.d.ts#L60)*
+*Defined in [feature.d.ts:66](https://github.com/fasttime/JScrewIt/blob/2.10.1/lib/feature.d.ts#L66)*
 
 A short description of this feature object in plain English.
 
@@ -76,11 +76,11 @@ ___
 
 ###  elementaryNames
 
-• **elementaryNames**: *string[]*
+• **elementaryNames**: *[ElementaryFeatureName](../modules/_jscrewit_.md#elementaryfeaturename)[]*
 
 *Inherited from [Feature](_jscrewit_.feature.md).[elementaryNames](_jscrewit_.feature.md#elementarynames)*
 
-*Defined in [feature.d.ts:69](https://github.com/fasttime/JScrewIt/blob/2.10.1/lib/feature.d.ts#L69)*
+*Defined in [feature.d.ts:75](https://github.com/fasttime/JScrewIt/blob/2.10.1/lib/feature.d.ts#L75)*
 
 An array of all elementary feature names included in this feature object, without
 aliases.
@@ -93,7 +93,7 @@ ___
 
 *Inherited from [Feature](_jscrewit_.feature.md).[name](_jscrewit_.feature.md#optional-name)*
 
-*Defined in [feature.d.ts:77](https://github.com/fasttime/JScrewIt/blob/2.10.1/lib/feature.d.ts#L77)*
+*Defined in [feature.d.ts:83](https://github.com/fasttime/JScrewIt/blob/2.10.1/lib/feature.d.ts#L83)*
 
 The primary name of this feature object, useful for identification purpose.
 
@@ -104,19 +104,19 @@ If desired, custom features may be assigned a name, too.
 
 ###  includes
 
-▸ **includes**(...`features`: [Feature](_jscrewit_.feature.md) | "ANDRO_4_0" | "ANDRO_4_1" | "ANDRO_4_4" | "ANY_DOCUMENT" | "ANY_WINDOW" | "ARRAY_ITERATOR" | "ARROW" | "ATOB" | "AUTO" | "BARPROP" | "BROWSER" | "CAPITAL_HTML" | "CHROME_73" | "COMPACT" | "CONSOLE" | "DEFAULT" | "DOCUMENT" | "DOMWINDOW" | "EDGE_40" | "ESC_HTML_ALL" | "ESC_HTML_QUOT" | "ESC_HTML_QUOT_ONLY" | "ESC_REGEXP_LF" | "ESC_REGEXP_SLASH" | "EXTERNAL" | "FF_54" | "FF_62" | "FF_SRC" | "FILL" | "FLAT" | "FROM_CODE_POINT" | "FUNCTION_19_LF" | "FUNCTION_22_LF" | "GMT" | "HISTORY" | "HTMLAUDIOELEMENT" | "HTMLDOCUMENT" | "IE_10" | "IE_11" | "IE_11_WIN_10" | "IE_9" | "IE_SRC" | "INCR_CHAR" | "INTL" | "LOCALE_INFINITY" | "NAME" | "NODECONSTRUCTOR" | "NODE_0_10" | "NODE_0_12" | "NODE_10" | "NODE_11" | "NODE_12" | "NODE_4" | "NODE_5" | "NO_FF_SRC" | "NO_IE_SRC" | "NO_OLD_SAFARI_ARRAY_ITERATOR" | "NO_V8_SRC" | "SAFARI_10" | "SAFARI_12" | "SAFARI_7_0" | "SAFARI_7_1" | "SAFARI_9" | "SELF_OBJ" | "STATUS" | "UNDEFINED" | "UNEVAL" | "V8_SRC" | "WINDOW" | "CHROME" | "CHROME_PREV" | "EDGE" | "EDGE_PREV" | "FF" | "FF_ESR" | "SAFARI" | "SAFARI_8" | "SELF" | `ReadonlyArray<Feature | "ANDRO_4_0" | "ANDRO_4_1" | "ANDRO_4_4" | "ANY_DOCUMENT" | "ANY_WINDOW" | "ARRAY_ITERATOR" | "ARROW" | "ATOB" | "AUTO" | "BARPROP" | "BROWSER" | "CAPITAL_HTML" | "CHROME_73" | "COMPACT" | "CONSOLE" | "DEFAULT" | "DOCUMENT" | "DOMWINDOW" | "EDGE_40" | "ESC_HTML_ALL" | "ESC_HTML_QUOT" | "ESC_HTML_QUOT_ONLY" | "ESC_REGEXP_LF" | "ESC_REGEXP_SLASH" | "EXTERNAL" | "FF_54" | "FF_62" | "FF_SRC" | "FILL" | "FLAT" | "FROM_CODE_POINT" | "FUNCTION_19_LF" | "FUNCTION_22_LF" | "GMT" | "HISTORY" | "HTMLAUDIOELEMENT" | "HTMLDOCUMENT" | "IE_10" | "IE_11" | "IE_11_WIN_10" | "IE_9" | "IE_SRC" | "INCR_CHAR" | "INTL" | "LOCALE_INFINITY" | "NAME" | "NODECONSTRUCTOR" | "NODE_0_10" | "NODE_0_12" | "NODE_10" | "NODE_11" | "NODE_12" | "NODE_4" | "NODE_5" | "NO_FF_SRC" | "NO_IE_SRC" | "NO_OLD_SAFARI_ARRAY_ITERATOR" | "NO_V8_SRC" | "SAFARI_10" | "SAFARI_12" | "SAFARI_7_0" | "SAFARI_7_1" | "SAFARI_9" | "SELF_OBJ" | "STATUS" | "UNDEFINED" | "UNEVAL" | "V8_SRC" | "WINDOW" | "CHROME" | "CHROME_PREV" | "EDGE" | "EDGE_PREV" | "FF" | "FF_ESR" | "SAFARI" | "SAFARI_8" | "SELF">`[]): *boolean*
+▸ **includes**(...`features`: [Feature](_jscrewit_.feature.md) | "ANY_DOCUMENT" | "ANY_WINDOW" | "ARRAY_ITERATOR" | "ARROW" | "ATOB" | "BARPROP" | "CAPITAL_HTML" | "CONSOLE" | "DOCUMENT" | "DOMWINDOW" | "ESC_HTML_ALL" | "ESC_HTML_QUOT" | "ESC_HTML_QUOT_ONLY" | "ESC_REGEXP_LF" | "ESC_REGEXP_SLASH" | "EXTERNAL" | "FF_SRC" | "FILL" | "FLAT" | "FROM_CODE_POINT" | "FUNCTION_19_LF" | "FUNCTION_22_LF" | "GMT" | "HISTORY" | "HTMLAUDIOELEMENT" | "HTMLDOCUMENT" | "IE_SRC" | "INCR_CHAR" | "INTL" | "LOCALE_INFINITY" | "NAME" | "NODECONSTRUCTOR" | "NO_FF_SRC" | "NO_IE_SRC" | "NO_OLD_SAFARI_ARRAY_ITERATOR" | "NO_V8_SRC" | "SELF_OBJ" | "STATUS" | "UNDEFINED" | "UNEVAL" | "V8_SRC" | "WINDOW" | "ANDRO_4_0" | "ANDRO_4_1" | "ANDRO_4_4" | "AUTO" | "BROWSER" | "CHROME_73" | "COMPACT" | "DEFAULT" | "EDGE_40" | "FF_54" | "FF_62" | "IE_10" | "IE_11" | "IE_11_WIN_10" | "IE_9" | "NODE_0_10" | "NODE_0_12" | "NODE_10" | "NODE_11" | "NODE_12" | "NODE_4" | "NODE_5" | "SAFARI_10" | "SAFARI_12" | "SAFARI_7_0" | "SAFARI_7_1" | "SAFARI_9" | "CHROME" | "CHROME_PREV" | "EDGE" | "EDGE_PREV" | "FF" | "FF_ESR" | "SAFARI" | "SAFARI_8" | "SELF" | ReadonlyArray‹[Feature](_jscrewit_.feature.md) | "ANY_DOCUMENT" | "ANY_WINDOW" | "ARRAY_ITERATOR" | "ARROW" | "ATOB" | "BARPROP" | "CAPITAL_HTML" | "CONSOLE" | "DOCUMENT" | "DOMWINDOW" | "ESC_HTML_ALL" | "ESC_HTML_QUOT" | "ESC_HTML_QUOT_ONLY" | "ESC_REGEXP_LF" | "ESC_REGEXP_SLASH" | "EXTERNAL" | "FF_SRC" | "FILL" | "FLAT" | "FROM_CODE_POINT" | "FUNCTION_19_LF" | "FUNCTION_22_LF" | "GMT" | "HISTORY" | "HTMLAUDIOELEMENT" | "HTMLDOCUMENT" | "IE_SRC" | "INCR_CHAR" | "INTL" | "LOCALE_INFINITY" | "NAME" | "NODECONSTRUCTOR" | "NO_FF_SRC" | "NO_IE_SRC" | "NO_OLD_SAFARI_ARRAY_ITERATOR" | "NO_V8_SRC" | "SELF_OBJ" | "STATUS" | "UNDEFINED" | "UNEVAL" | "V8_SRC" | "WINDOW" | "ANDRO_4_0" | "ANDRO_4_1" | "ANDRO_4_4" | "AUTO" | "BROWSER" | "CHROME_73" | "COMPACT" | "DEFAULT" | "EDGE_40" | "FF_54" | "FF_62" | "IE_10" | "IE_11" | "IE_11_WIN_10" | "IE_9" | "NODE_0_10" | "NODE_0_12" | "NODE_10" | "NODE_11" | "NODE_12" | "NODE_4" | "NODE_5" | "SAFARI_10" | "SAFARI_12" | "SAFARI_7_0" | "SAFARI_7_1" | "SAFARI_9" | "CHROME" | "CHROME_PREV" | "EDGE" | "EDGE_PREV" | "FF" | "FF_ESR" | "SAFARI" | "SAFARI_8" | "SELF"›[]): *boolean*
 
 *Inherited from [Feature](_jscrewit_.feature.md).[includes](_jscrewit_.feature.md#includes)*
 
-*Defined in [feature.d.ts:87](https://github.com/fasttime/JScrewIt/blob/2.10.1/lib/feature.d.ts#L87)*
+*Defined in [feature.d.ts:93](https://github.com/fasttime/JScrewIt/blob/2.10.1/lib/feature.d.ts#L93)*
 
 Determines whether this feature object includes all of the specified features.
 
 **Parameters:**
 
 Name | Type |
 ------ | ------ |
-`...features` | [Feature](_jscrewit_.feature.md) \| "ANDRO_4_0" \| "ANDRO_4_1" \| "ANDRO_4_4" \| "ANY_DOCUMENT" \| "ANY_WINDOW" \| "ARRAY_ITERATOR" \| "ARROW" \| "ATOB" \| "AUTO" \| "BARPROP" \| "BROWSER" \| "CAPITAL_HTML" \| "CHROME_73" \| "COMPACT" \| "CONSOLE" \| "DEFAULT" \| "DOCUMENT" \| "DOMWINDOW" \| "EDGE_40" \| "ESC_HTML_ALL" \| "ESC_HTML_QUOT" \| "ESC_HTML_QUOT_ONLY" \| "ESC_REGEXP_LF" \| "ESC_REGEXP_SLASH" \| "EXTERNAL" \| "FF_54" \| "FF_62" \| "FF_SRC" \| "FILL" \| "FLAT" \| "FROM_CODE_POINT" \| "FUNCTION_19_LF" \| "FUNCTION_22_LF" \| "GMT" \| "HISTORY" \| "HTMLAUDIOELEMENT" \| "HTMLDOCUMENT" \| "IE_10" \| "IE_11" \| "IE_11_WIN_10" \| "IE_9" \| "IE_SRC" \| "INCR_CHAR" \| "INTL" \| "LOCALE_INFINITY" \| "NAME" \| "NODECONSTRUCTOR" \| "NODE_0_10" \| "NODE_0_12" \| "NODE_10" \| "NODE_11" \| "NODE_12" \| "NODE_4" \| "NODE_5" \| "NO_FF_SRC" \| "NO_IE_SRC" \| "NO_OLD_SAFARI_ARRAY_ITERATOR" \| "NO_V8_SRC" \| "SAFARI_10" \| "SAFARI_12" \| "SAFARI_7_0" \| "SAFARI_7_1" \| "SAFARI_9" \| "SELF_OBJ" \| "STATUS" \| "UNDEFINED" \| "UNEVAL" \| "V8_SRC" \| "WINDOW" \| "CHROME" \| "CHROME_PREV" \| "EDGE" \| "EDGE_PREV" \| "FF" \| "FF_ESR" \| "SAFARI" \| "SAFARI_8" \| "SELF" \| `ReadonlyArray<Feature \| "ANDRO_4_0" \| "ANDRO_4_1" \| "ANDRO_4_4" \| "ANY_DOCUMENT" \| "ANY_WINDOW" \| "ARRAY_ITERATOR" \| "ARROW" \| "ATOB" \| "AUTO" \| "BARPROP" \| "BROWSER" \| "CAPITAL_HTML" \| "CHROME_73" \| "COMPACT" \| "CONSOLE" \| "DEFAULT" \| "DOCUMENT" \| "DOMWINDOW" \| "EDGE_40" \| "ESC_HTML_ALL" \| "ESC_HTML_QUOT" \| "ESC_HTML_QUOT_ONLY" \| "ESC_REGEXP_LF" \| "ESC_REGEXP_SLASH" \| "EXTERNAL" \| "FF_54" \| "FF_62" \| "FF_SRC" \| "FILL" \| "FLAT" \| "FROM_CODE_POINT" \| "FUNCTION_19_LF" \| "FUNCTION_22_LF" \| "GMT" \| "HISTORY" \| "HTMLAUDIOELEMENT" \| "HTMLDOCUMENT" \| "IE_10" \| "IE_11" \| "IE_11_WIN_10" \| "IE_9" \| "IE_SRC" \| "INCR_CHAR" \| "INTL" \| "LOCALE_INFINITY" \| "NAME" \| "NODECONSTRUCTOR" \| "NODE_0_10" \| "NODE_0_12" \| "NODE_10" \| "NODE_11" \| "NODE_12" \| "NODE_4" \| "NODE_5" \| "NO_FF_SRC" \| "NO_IE_SRC" \| "NO_OLD_SAFARI_ARRAY_ITERATOR" \| "NO_V8_SRC" \| "SAFARI_10" \| "SAFARI_12" \| "SAFARI_7_0" \| "SAFARI_7_1" \| "SAFARI_9" \| "SELF_OBJ" \| "STATUS" \| "UNDEFINED" \| "UNEVAL" \| "V8_SRC" \| "WINDOW" \| "CHROME" \| "CHROME_PREV" \| "EDGE" \| "EDGE_PREV" \| "FF" \| "FF_ESR" \| "SAFARI" \| "SAFARI_8" \| "SELF">`[] |
+`...features` | [Feature](_jscrewit_.feature.md) \| "ANY_DOCUMENT" \| "ANY_WINDOW" \| "ARRAY_ITERATOR" \| "ARROW" \| "ATOB" \| "BARPROP" \| "CAPITAL_HTML" \| "CONSOLE" \| "DOCUMENT" \| "DOMWINDOW" \| "ESC_HTML_ALL" \| "ESC_HTML_QUOT" \| "ESC_HTML_QUOT_ONLY" \| "ESC_REGEXP_LF" \| "ESC_REGEXP_SLASH" \| "EXTERNAL" \| "FF_SRC" \| "FILL" \| "FLAT" \| "FROM_CODE_POINT" \| "FUNCTION_19_LF" \| "FUNCTION_22_LF" \| "GMT" \| "HISTORY" \| "HTMLAUDIOELEMENT" \| "HTMLDOCUMENT" \| "IE_SRC" \| "INCR_CHAR" \| "INTL" \| "LOCALE_INFINITY" \| "NAME" \| "NODECONSTRUCTOR" \| "NO_FF_SRC" \| "NO_IE_SRC" \| "NO_OLD_SAFARI_ARRAY_ITERATOR" \| "NO_V8_SRC" \| "SELF_OBJ" \| "STATUS" \| "UNDEFINED" \| "UNEVAL" \| "V8_SRC" \| "WINDOW" \| "ANDRO_4_0" \| "ANDRO_4_1" \| "ANDRO_4_4" \| "AUTO" \| "BROWSER" \| "CHROME_73" \| "COMPACT" \| "DEFAULT" \| "EDGE_40" \| "FF_54" \| "FF_62" \| "IE_10" \| "IE_11" \| "IE_11_WIN_10" \| "IE_9" \| "NODE_0_10" \| "NODE_0_12" \| "NODE_10" \| "NODE_11" \| "NODE_12" \| "NODE_4" \| "NODE_5" \| "SAFARI_10" \| "SAFARI_12" \| "SAFARI_7_0" \| "SAFARI_7_1" \| "SAFARI_9" \| "CHROME" \| "CHROME_PREV" \| "EDGE" \| "EDGE_PREV" \| "FF" \| "FF_ESR" \| "SAFARI" \| "SAFARI_8" \| "SELF" \| ReadonlyArray‹[Feature](_jscrewit_.feature.md) \| "ANY_DOCUMENT" \| "ANY_WINDOW" \| "ARRAY_ITERATOR" \| "ARROW" \| "ATOB" \| "BARPROP" \| "CAPITAL_HTML" \| "CONSOLE" \| "DOCUMENT" \| "DOMWINDOW" \| "ESC_HTML_ALL" \| "ESC_HTML_QUOT" \| "ESC_HTML_QUOT_ONLY" \| "ESC_REGEXP_LF" \| "ESC_REGEXP_SLASH" \| "EXTERNAL" \| "FF_SRC" \| "FILL" \| "FLAT" \| "FROM_CODE_POINT" \| "FUNCTION_19_LF" \| "FUNCTION_22_LF" \| "GMT" \| "HISTORY" \| "HTMLAUDIOELEMENT" \| "HTMLDOCUMENT" \| "IE_SRC" \| "INCR_CHAR" \| "INTL" \| "LOCALE_INFINITY" \| "NAME" \| "NODECONSTRUCTOR" \| "NO_FF_SRC" \| "NO_IE_SRC" \| "NO_OLD_SAFARI_ARRAY_ITERATOR" \| "NO_V8_SRC" \| "SELF_OBJ" \| "STATUS" \| "UNDEFINED" \| "UNEVAL" \| "V8_SRC" \| "WINDOW" \| "ANDRO_4_0" \| "ANDRO_4_1" \| "ANDRO_4_4" \| "AUTO" \| "BROWSER" \| "CHROME_73" \| "COMPACT" \| "DEFAULT" \| "EDGE_40" \| "FF_54" \| "FF_62" \| "IE_10" \| "IE_11" \| "IE_11_WIN_10" \| "IE_9" \| "NODE_0_10" \| "NODE_0_12" \| "NODE_10" \| "NODE_11" \| "NODE_12" \| "NODE_4" \| "NODE_5" \| "SAFARI_10" \| "SAFARI_12" \| "SAFARI_7_0" \| "SAFARI_7_1" \| "SAFARI_9" \| "CHROME" \| "CHROME_PREV" \| "EDGE" \| "EDGE_PREV" \| "FF" \| "FF_ESR" \| "SAFARI" \| "SAFARI_8" \| "SELF"›[] |
 
 **Returns:** *boolean*
 
@@ -127,11 +127,11 @@ ___
 
 ###  restrict
 
-▸ **restrict**(`environment`: "forced-strict-mode" | "web-worker", `engineFeatureObjs?`: `ReadonlyArray<PredefinedFeature>`): *[CustomFeature](_jscrewit_.customfeature.md)*
+▸ **restrict**(`environment`: "forced-strict-mode" | "web-worker", `engineFeatureObjs?`: keyof PredefinedFeature[]): *[CustomFeature](_jscrewit_.customfeature.md)*
 
 *Inherited from [Feature](_jscrewit_.feature.md).[restrict](_jscrewit_.feature.md#restrict)*
 
-*Defined in [feature.d.ts:119](https://github.com/fasttime/JScrewIt/blob/2.10.1/lib/feature.d.ts#L119)*
+*Defined in [feature.d.ts:125](https://github.com/fasttime/JScrewIt/blob/2.10.1/lib/feature.d.ts#L125)*
 
 Creates a new feature object from this feature by removing elementary features that are
 not available inside a particular environment.
@@ -144,6 +144,6 @@ worker.
 Name | Type | Description |
 ------ | ------ | ------ |
 `environment` | "forced-strict-mode" \| "web-worker" |   The environment to which this feature should be restricted. Two environments are currently supported.  <dl>  <dt><code>"forced-strict-mode"</code></dt> <dd> Removes features that are not available in environments that require strict mode code. </dd>  <dt><code>"web-worker"</code></dt> <dd>Removes features that are not available inside web workers.</dd>  </dl>  |
-`engineFeatureObjs?` | `ReadonlyArray<PredefinedFeature>` |   An array of predefined feature objects, each corresponding to a particular engine in which the restriction should be enacted. If this parameter is omitted, the restriction is enacted in all engines.  |
+`engineFeatureObjs?` | keyof PredefinedFeature[] |   An array of predefined feature objects, each corresponding to a particular engine in which the restriction should be enacted. If this parameter is omitted, the restriction is enacted in all engines.  |
 
 **Returns:** *[CustomFeature](_jscrewit_.customfeature.md)*