Operator first support,including ternary,dot etc.

generally this will give us fairly accurate indents without having
specific code for each operator.Thanks to
pangloss#139 (comment)
which this is based on

Author: bounceme

Diff for: indent/javascript.vim

@@ -76,8 +76,7 @@ let s:var_stmt = '^\s*(const\|let\|var)'
 let s:comma_first = '^\s*,'
 let s:comma_last = ',\s*$'
 
-let s:ternary = '^\s\+[?|:]'
-let s:ternary_q = '^\s\+?'
+let s:operator_first = '^\s*\%([-*/+.:?]\|||\|&&\)'
 
 let s:case_indent = s:sw()
 let s:case_indent_after = s:sw()
@@ -146,7 +145,8 @@ function s:GetMSL(lnum, in_one_line_scope)
     " Otherwise, terminate search as we have found our MSL already.
     let line = getline(lnum)
     let col = match(line, s:msl_regex) + 1
-    if (col > 0 && !s:IsInStringOrComment(lnum, col)) || s:IsInString(lnum, strlen(line))
+    let colprev = s:Match(msl, s:operator_first)
+    if ((col > 0 && !s:IsInStringOrComment(lnum, col)) || s:IsInString(lnum, strlen(line)) || colprev)
       let msl = lnum
     else
       " Don't use lines that are part of a one line scope as msl unless the
@@ -378,12 +378,30 @@ function GetJavascriptIndent()
     return indent(prevline) + s:case_indent_after
   endif
 
-  if (line =~ s:ternary)
-    if (getline(prevline) =~ s:ternary_q)
+  if (s:Match(v:lnum, s:operator_first))
+    if (s:Match(prevline, s:operator_first))
+      " and so does previous line, don't indent
       return indent(prevline)
-    else
+    end
+    let counts = s:LineHasOpeningBrackets(prevline)
+    if counts[0] == '2'
+      call cursor(prevline, 1)
+      " Search for the opening tag
+      let mnum = searchpair('(', '', ')', 'bW', s:skip_expr)
+      if mnum > 0 && s:Match(mnum, s:operator_first)
+        return indent(mnum)
+      end
+    elseif counts[0] != '1' && counts[1] != '1' && counts[2] != '1'
+      " otherwise, indent 1 level
       return indent(prevline) + s:sw()
-    endif
+    end
+    " If previous line starts with a operator...
+  elseif (s:Match(prevline, s:operator_first))
+    let counts = s:LineHasOpeningBrackets(prevline)
+    if counts[0] != '1' && counts[1] != '1' && counts[2] != '1'
+      " dedent 1 level
+      return indent(prevline) - s:sw()
+    end
   endif
 
   " If we are in a multi-line comment, cindent does the right thing.