[immutable.js] Converting immutable.js structures to Javascript and other immutable Types

Immutable.js provides several conversion methods to migrate one structure to another. Each Immutable.js class contains a prefixed ' to ' method like Map.tolist (), Map.toset (), etc. Converting these types sometimes results in a loss of data, as we'll see if converting from the Map to List.

Map to List:

  It (' should convert Map () to List () ', ()    = = Immutable.map ({      ' first Item ',        ' Second Item '    });         = map.tolist ();        Expect (Immutable.List.isList (convertedlist)). to.be. true ;         // Keys are discarded    Expect (Convertedlist.first ()). To.equal (' first Item ');    Expect (Convertedlist.last ()). To.equal (' Second Item ');      });

List to Map:

  It (' should convert List () to Map () ', ()    = = Immutable.List.of (' First item ', ' Second item ');        = list.tomap ();         // converted Keys Ascend numerically    Keys = Convertedmap.keys ();    Expect (Keys.next (). Value). to.equal (0);    Expect (Keys.next (). Value). to.equal (1);        Expect (Immutable.Map.isMap (Convertedmap)). to.be. true ;        Expect (Convertedmap.first ()). To.equal (' first Item ');    Expect (Convertedmap.last ()). To.equal (' Second Item ');      });

Map to Javascript Array:

  It (' should convert Map () to Javascript Array ', ()    = = Immutable.map ({      ' first Item ', c6/>' Second item ',      ' Nested item '}    });         = Map.toarray ();         // Keys are discarded    Expect (Arr[0]). To.equal (' first Item ');    Expect (arr[1]). To.equal (' Second Item ');    Expect (arr[2].key4). To.equal (' Nested Item ');      });

Map to JSON:

  It (' should convert Map () to JSON ', ()    = = Immutable.map ({      ' first Item ',       ' Second item ',      ' Nested item '}    });         = Map.tojson ();        Expect (json.key1). To.equal (' first Item ');    Expect (Json.key2). To.equal (' Second Item ');    Expect (Json.key3.key4). To.equal (' Nested Item ');      });

[immutable.js] Converting immutable.js structures to Javascript and other immutable Types