Is there a typescript List and or Map class library

Question

Did they add a runtime List lt   and or Map lt   type class to typepad 1 0  And if not  is there a solid library out there someone wrote that provides this functionality   And in the case of List lt    is there a linked list where the elements in the list have the next prev property  We need a list where from an element object  ie not from an iterator   we can get the next and previous elements in the list  or null if it s the first last one

User · Accepted Answer

Did they add a runtime List lt   and or Map lt   type class to typepad 1 0   No  providing a runtime is not the focus of the TypeScript team       is there a solid library out there someone wrote that provides this functionality    I wrote  really just ported over buckets to typescript   https   github com basarat typescript-collections  Update  JavaScript   TypeScript now support this natively and you can enable them with lib d ts   https   basarat gitbooks io typescript docs types lib d ts html along with a polyfill if you want

User · Answer

It s very easy to write that yourself  and that way you have more control over things   As the other answers say  TypeScript is not aimed at adding runtime types or functionality   Map   class Map lt T gt        private items     key  string   T         constructor             this items                  add key  string  value  T   void           this items key    value             has key  string   boolean           return key in this items             get key  string   T           return this items key             List   class List lt T gt        private items  Array lt T gt        constructor             this items                  size    number           return this items length             add value  T   void           this items push value              get index  number   T           return this items index             I haven t tested  or even tried to compile  this code  but it should give you a starting point    you can of course then change what ever you want and add the functionality that YOU need     As for your  special needs  from the List  I see no reason why to implement a linked list  since the javascript array lets you add and remove items  Here s a modified version of the List to handle the get prev next from the element itself   class ListItem lt T gt        private list  List lt T gt       private index  number       public value  T       constructor list  List lt T gt   value  T  index  number            this list   list          this index   index          this value   value             prev    ListItem lt T gt            return this list get this index - 1              next    ListItem lt T gt            return this list get this index   1               class List lt T gt        private items  Array lt ListItem lt T gt  gt        constructor             this items                  size    number           return this items length             add value  T   void           this items push new ListItem lt T gt  this  value  this size                 get index  number   ListItem lt T gt            return this items index             Here too you re looking at untested code    Hope this helps     Edit - as this answer still gets some attention  Javascript has a native Map object so there s no need to create your own   let map   new Map    map set  key1    value1    console log map get  key1        value1

[collections] Is there a typescript List<> and/or Map<> class/library?

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