rm a few exported objects in src/plotly.js:

by:
- requiring svgTextUtils in plot_api.js
- moving a injected modules in to src/core.js
- requiring some module directly in src/core.js
  instead of through src/plotly.js

Author: etpinard

src/core.js

@@ -17,6 +17,15 @@ var Plotly = require('./plotly');
 // package version injected by `npm run preprocess`
 exports.version = '1.16.2';
 
+// inject promise polyfill
+require('es6-promise').polyfill();
+
+// inject plot css
+require('../build/plotcss');
+
+// inject default MathJax config
+require('./fonts/mathjax_config');
+
 // plot api
 exports.plot = Plotly.plot;
 exports.newPlot = Plotly.newPlot;
@@ -44,9 +53,9 @@ exports.Icons = require('../build/ploticon');
 // unofficial 'beta' plot methods, use at your own risk
 exports.Plots = Plotly.Plots;
 exports.Fx = Plotly.Fx;
-exports.Snapshot = Plotly.Snapshot;
-exports.PlotSchema = Plotly.PlotSchema;
-exports.Queue = Plotly.Queue;
+exports.Snapshot = require('./snapshot');
+exports.PlotSchema = require('./plot_api/plot_schema');
+exports.Queue = require('./lib/queue');
 
 // export d3 used in the bundle
 exports.d3 = require('d3');

src/plot_api/plot_api.js

@@ -36,6 +36,7 @@ var Shapes = require('../components/shapes');
 var Titles = require('../components/titles');
 var ModeBar = require('../components/modebar');
 var xmlnsNamespaces = require('../constants/xmlns_namespaces');
+var svgTextUtils = require('../lib/svg_text_utils');
 
 
 /**
@@ -453,7 +454,7 @@ function plotPolar(gd, data, layout) {
     var placeholderText = 'Click to enter title';
 
     var titleLayout = function() {
-        this.call(Plotly.util.convertToTspans);
+        this.call(svgTextUtils.convertToTspans);
         //TODO: html/mathjax
         //TODO: center title
     };
@@ -479,7 +480,7 @@ function plotPolar(gd, data, layout) {
         }
 
         var setContenteditable = function() {
-            this.call(Plotly.util.makeEditable)
+            this.call(svgTextUtils.makeEditable)
                 .on('edit', function(text) {
                     gd.framework({layout: {title: text}});
                     this.attr({'data-unformatted': text})

src/plotly.js

@@ -18,19 +18,7 @@
  *
  */
 
-// promise polyfill
-require('es6-promise').polyfill();
-
-// lib functions
-exports.Lib = require('./lib');
-exports.util = require('./lib/svg_text_utils');
-exports.Queue = require('./lib/queue');
-
-// plot css
-require('../build/plotcss');
-
 // configuration
-exports.MathJaxConfig = require('./fonts/mathjax_config');
 exports.defaultConfig = require('./plot_api/plot_config');
 
 // plots
@@ -53,7 +41,3 @@ exports.ModeBar = require('./components/modebar');
 
 // plot api
 require('./plot_api/plot_api');
-exports.PlotSchema = require('./plot_api/plot_schema');
-
-// imaging routines
-exports.Snapshot = require('./snapshot');