Fix errors creating type files

libs/graphics/jswrap_graphics.c

@@ -453,7 +453,8 @@ a full update of the screen.
 /*JSON{
   "type" : "property",
   "class" : "Graphics",
-  "name" : "buffer"
+  "name" : "buffer",
+  "return" : ["JsVar","An ArrayBuffer (or not defined on Graphics instances not created with `Graphics.createArrayBuffer`)"]
 }
 On Graphics instances with an offscreen buffer, this
 is an `ArrayBuffer` that provides access to the underlying

libs/misc/jswrap_unistroke.c

@@ -14,6 +14,28 @@
 #include "jswrap_unistroke.h"
 #include "unistroke.h"
 
+/*JSON{
+    "type" : "class",
+    "class" : "Unistroke",
+    "ifdef" : "BANGLEJS2"
+}
+This class provides functionality to recognise gestures drawn
+on a touchscreen. It is only built into Bangle.js 2.
+
+Usage:
+
+```
+var strokes = {
+  stroke1 : Unistroke.new(new Uint8Array([x1, y1, x2, y2, x3, y3, ...])),
+  stroke2 : Unistroke.new(new Uint8Array([x1, y1, x2, y2, x3, y3, ...])),
+  stroke3 : Unistroke.new(new Uint8Array([x1, y1, x2, y2, x3, y3, ...]))
+};
+var r = Unistroke.recognise(strokes,new Uint8Array([x1, y1, x2, y2, x3, y3, ...]))
+print(r); // stroke1/stroke2/stroke3
+```
+
+*/
+
 /*JSON{
     "type" : "staticmethod",
     "class" : "Unistroke",

scripts/build_tern_json.js

@@ -5,21 +5,28 @@
 // This build a JSON description file for Tern.js as
 // specified here: http://ternjs.net/doc/manual.html#typedef
 
-var marked = require('marked');
-// Set default options except highlight which has no default
-marked.setOptions({
-  gfm: true, // github markdown
-  highlight: function (code) {
-    return require('highlight.js').highlightAuto(code).value;
-  },
-  tables: true,
-  breaks: false,
-  pedantic: false,
-  sanitize: false,
-  smartLists: true,
-  smartypants: false,
-  langPrefix: 'lang-'
-});
+var marked = v => v;
+try {
+  marked = require('marked');
+  // Set default options except highlight which has no default
+  marked.setOptions({
+    gfm: true, // github markdown
+    highlight: function (code) {
+      return require('highlight.js').highlightAuto(code).value;
+    },
+    tables: true,
+    breaks: false,
+    pedantic: false,
+    sanitize: false,
+    smartLists: true,
+    smartypants: false,
+    langPrefix: 'lang-'
+  });
+} catch (e) {
+  console.error("WARNING: marked is not installed");
+}
+
+var hadErrors = false;
 
 require("./common.js").readAllWrapperFiles(function(json) {
   var tern = { "!name": "Espruino" };
@@ -50,6 +57,7 @@ require("./common.js").readAllWrapperFiles(function(json) {
       }
     } catch (e) {
       console.error("Exception "+e, j);
+      hadErrors = true;
     }
   });
 
@@ -94,6 +102,7 @@ require("./common.js").readAllWrapperFiles(function(json) {
        console.warn("Unknown type "+j.type+" for ",j);
     } catch (e) {
       console.error("Exception "+e, e.stack, j);
+      hadErrors = true;
     }
   });
 
@@ -101,6 +110,10 @@ require("./common.js").readAllWrapperFiles(function(json) {
  delete tern["Telnet"]["!type"];
 
 
+ if (hadErrors) {
+   console.log("ERRORS PROCESING FILES");
+   process.exit(1);
+ }
  console.log(JSON.stringify(tern,null,2));
 
 });