[wip] a few todos

- do the Lib.extend* methods do the right for typed arrays
- what to do with 2d arrays? Should we start supporting ndarrays?
- should we invent a JSON-seriliazable version of typed arrays?

src/lib/coerce.js

@@ -32,6 +32,7 @@ exports.valObjectMeta = {
         requiredOpts: [],
         otherOpts: ['dflt'],
         coerceFunction: function(v, propOut, dflt) {
+            // TODO maybe `v: {type: 'float32', vals: [/* ... */]}` also
             if(isArrayOrTypedArray(v)) propOut.set(v);
             else if(dflt !== undefined) propOut.set(dflt);
         }

src/lib/extend.js

@@ -65,6 +65,8 @@ function _extend(inputs, isDeep, keepAllKeys, noArrayCopies) {
 
     var input, key, src, copy, copyIsArray, clone, allPrimitives;
 
+    // TODO does this do the right thing for typed arrays?
+
     if(length === 2 && isArray(target) && isArray(inputs[1]) && target.length === 0) {
 
         allPrimitives = primitivesLoopSplice(inputs[1], target);

src/traces/surface/defaults.js

@@ -32,6 +32,7 @@ module.exports = function supplyDefaults(traceIn, traceOut, defaultColor, layout
     var x = coerce('x');
     coerce('y');
 
+    // TODO
     traceOut._xlength = (Array.isArray(x) && Array.isArray(x[0])) ? z.length : z[0].length;
     traceOut._ylength = z.length;