Update

indent/typescript.vim

@@ -0,0 +1,79 @@
+" Vim indent file, taken from indent/java.vim
+" Language:	    Typescript
+" Maintainer:	None!  Wanna improve this?
+" Last Change:	2015 Mar 07
+
+" Only load this indent file when no other was loaded.
+if exists("b:did_indent")
+   finish
+endif
+let b:did_indent = 1
+
+" Use javascript cindent options
+setlocal cindent cinoptions& cinoptions+=j1,J1
+setlocal indentkeys&
+
+" Load typescript indent function
+setlocal indentexpr=GetTypescriptIndent()
+
+let b:undo_indent = "setl cin< cino< indentkeys< indentexpr<"
+
+" Only define the function once
+if exists("*GetTypescriptIndent")
+    finish
+endif
+
+" Make sure we have vim capabilities
+let s:keepcpo = &cpo
+set cpo&vim
+
+function! TypescriptPrevNonBlankOrComment(lnum)
+    let pnum = prevnonblank(a:lnum)
+    " skip any comments (either `//`, `/*` or `*`)
+    while getline(pnum) =~ '^\s*\(\/\/\|\/\*\|\*\)'
+        let pnum = prevnonblank(pnum-1)
+    endwhile
+    return pnum
+endfunction
+
+function GetTypescriptIndent()
+
+    " default value: trust cindent
+    let ind = cindent(v:lnum)
+
+    if getline(v:lnum) =~ '^\s*[{}\*]'
+        return ind
+    endif
+
+    " The last non-empty line
+    let prev = TypescriptPrevNonBlankOrComment(v:lnum-1)
+
+    " Check if the previous line consists of a single `<variable> : <type>;`
+    " declaration (e.g. in interface definitions)
+    if getline(prev) =~ '^\s*\w\+\s*:[^{]\+;\s*$'
+        return indent(prev)
+    endif
+
+    " Try to find out whether the last `}` ended a `<variable> : {` block
+    if getline(prev) =~ '};\s*$'
+        " jump to matching `{` bracket
+        call cursor(prev, 1)
+        silent normal %
+
+        " See if current line is type annotation without closing ';' but open
+        " `{` bracket
+        let lnum = line('.')
+        if getline(lnum) =~ '^\s*\w\+\s*:[^;]\+{'
+            let ind = indent(lnum)
+        endif
+    endif
+
+    return ind
+
+endfunction
+
+" Restore compatibility mode
+let &cpo = s:keepcpo
+unlet s:keepcpo
+
+" vim: et