add makeComputeError to errorbars module, call it w/ Registry

Author: etpinard

src/components/errorbars/index.js

@@ -12,7 +12,6 @@ var Lib = require('../../lib');
 var overrideAll = require('../../plot_api/edit_types').overrideAll;
 
 var attributes = require('./attributes');
-var calc = require('./calc');
 
 var xyAttrs = {
     error_x: Lib.extendFlat({}, attributes),
@@ -48,7 +47,8 @@ module.exports = {
 
     supplyDefaults: require('./defaults'),
 
-    calc: calc,
+    calc: require('./calc'),
+    makeComputeError: require('./compute_error'),
 
     plot: require('./plot'),
     style: require('./style'),

src/traces/scatter3d/calc_errors.js

@@ -6,15 +6,14 @@
 * LICENSE file in the root directory of this source tree.
 */
 
-
 'use strict';
 
-var makeComputeError = require('../../components/errorbars/compute_error');
+var Registry = require('../../registry');
 
 function calculateAxisErrors(data, params, scaleFactor) {
     if(!params || !params.visible) return null;
 
-    var computeError = makeComputeError(params);
+    var computeError = Registry.getComponentMethod('errorbars', 'makeComputeError')(params);
     var result = new Array(data.length);
 
     for(var i = 0; i < data.length; i++) {

src/traces/scattergl/convert.js

@@ -21,7 +21,6 @@ var AxisIDs = require('../../plots/cartesian/axis_ids');
 var formatColor = require('../../lib/gl_format_color').formatColor;
 var subTypes = require('../scatter/subtypes');
 var makeBubbleSizeFn = require('../scatter/make_bubble_size_func');
-var makeComputeError = require('../../components/errorbars/compute_error');
 
 var constants = require('./constants');
 var DESELECTDIM = require('../../constants/interactions').DESELECTDIM;
@@ -364,6 +363,7 @@ function convertLinePositions(gd, trace, positions) {
 }
 
 function convertErrorBarPositions(gd, trace, positions, x, y) {
+    var makeComputeError = Registry.getComponentMethod('errorbars', 'makeComputeError');
     var xa = AxisIDs.getFromId(gd, trace.xaxis);
     var ya = AxisIDs.getFromId(gd, trace.yaxis);
     var count = positions.length / 2;