fix #54 ("definitions" with no available info)

Author: Claus Reinke

bin/tss.js

@@ -306,14 +306,14 @@ var TSS = (function () {
                     file = _this.resolveRelativePath(m[3]);
                     pos = _this.fileCache.lineColToPosition(file, line, col);
                     locs = _this.ls.getDefinitionAtPosition(file, pos); // NOTE: multiple definitions
-                    info = locs.map(function (def) { return ({
+                    info = locs && locs.map(function (def) { return ({
                         def: def,
                         file: def && def.fileName,
                         min: def && _this.fileCache.positionToLineCol(def.fileName, def.textSpan.start),
                         lim: def && _this.fileCache.positionToLineCol(def.fileName, ts.textSpanEnd(def.textSpan))
                     }); });
                     // TODO: what about multiple definitions?
-                    _this.output(info[0] || null);
+                    _this.output((locs && info[0]) || null);
                 }
                 else if (m = match(cmd, /^(references|occurrences) (\d+) (\d+) (.*)$/)) {
                     line = parseInt(m[2]);

ftplugin/typescript_tss.vim

@@ -162,10 +162,10 @@ function! TSSdef(cmd)
   let info = TSScmd("definition",{})
   if type(info)!=type({}) || info.file=='null' || type(info.min)!=type({})
     \ || type(info.min.line)!=type(0) || type(info.min.character)!=type(0)
-    if type(info)==type("")
-      echoerr info
-    else
+    if type(info)==type("") && info=='null'
       echoerr 'no useable definition information'
+    else
+      echoerr string(info)
     endif
     return info
   endif

tss.ts

@@ -374,15 +374,15 @@ class TSS {
           pos  = this.fileCache.lineColToPosition(file,line,col);
           locs = this.ls.getDefinitionAtPosition(file, pos); // NOTE: multiple definitions
 
-          info = locs.map( def => ({
+          info = locs && locs.map( def => ({
             def  : def,
             file : def && def.fileName,
             min  : def && this.fileCache.positionToLineCol(def.fileName,def.textSpan.start),
             lim  : def && this.fileCache.positionToLineCol(def.fileName,ts.textSpanEnd(def.textSpan))
           }));
 
           // TODO: what about multiple definitions?
-          this.output(info[0]||null);
+          this.output((locs && info[0])||null);
 
         } else if (m = match(cmd,/^(references|occurrences) (\d+) (\d+) (.*)$/)) {