New eslint rules

.eslintrc

@@ -3,6 +3,9 @@
   "extends": [
     "eslint:recommended"
   ],
+  "parserOptions": {
+    "ecmaVersion": 5,
+  },
   "env": {
     "commonjs": true
   },
@@ -14,7 +17,7 @@
     "indent": [2, 4, {"SwitchCase": 1}],
     "max-len": [0, 80],
     "brace-style": [0, "stroustrup", {"allowSingleLine": true}],
-    "curly": [0, "multi"],
+    "curly": [2, "multi-line"],
     "camelcase": [0, {"properties": "never"}],
     "comma-spacing": [2, {"before": false, "after": true}],
     "comma-style": [2, "last"],
@@ -32,20 +35,24 @@
     "space-in-parens": [2, "never"],
     "space-before-function-paren": [2, "never"],
     "space-before-blocks": [2],
+    "spaced-comment": [2, "always"],
+    "no-tabs": [2],
     "no-multi-spaces": [2],
     "no-whitespace-before-property": [2],
     "no-unexpected-multiline": [2],
     "no-floating-decimal": [2],
     "space-infix-ops": [2, {"int32Hint": true}],
     "quotes": [2, "single"],
     "dot-notation": [2],
+    "dot-location": [2, "property"],
     "operator-linebreak": [2, "after"],
     "eqeqeq": [2],
-    "new-cap": [0],
+    "new-cap": [2, { "capIsNewExceptionPattern": "^MathJax\\.." }],
     "no-redeclare": [2, {"builtinGlobals": true}],
     "no-shadow": [0, {"builtinGlobals": true}],
     "block-scoped-var": [2],
     "no-unused-vars": [2],
+    "no-undef-init": [2],
     "no-use-before-define": [2, "nofunc"],
     "no-loop-func": [2],
     "no-console": [0],

package.json

@@ -28,7 +28,7 @@
     "build": "npm run preprocess && npm run bundle && npm run header && npm run stats",
     "cibuild": "npm run preprocess && node tasks/cibundle.js",
     "watch": "node tasks/watch.js",
-    "lint": "eslint . || true",
+    "lint": "eslint --version && eslint . || true",
     "lint-fix": "eslint . --fix",
     "pretest": "node tasks/pretest.js",
     "test-jasmine": "karma start test/jasmine/karma.conf.js",
@@ -92,7 +92,7 @@
     "browserify": "^13.0.0",
     "browserify-transform-tools": "^1.5.1",
     "ecstatic": "^1.4.0",
-    "eslint": "^3.0.0",
+    "eslint": "^3.5.0",
     "falafel": "^1.2.0",
     "fs-extra": "^0.30.0",
     "fuse.js": "^2.2.0",

src/components/annotations/draw.js

@@ -409,16 +409,16 @@ function drawOne(gd, index, opt, value) {
         // and the annotation center are visible
         if(options.showarrow) {
             if(options.axref === options.xref) {
-                //we don't want to constrain if the tail is absolute
-                //or the slope (which is meaningful) will change.
+                // we don't want to constrain if the tail is absolute
+                // or the slope (which is meaningful) will change.
                 arrowX = annPosPx.x;
             } else {
                 arrowX = Lib.constrain(annPosPx.x - options.ax, 1, fullLayout.width - 1);
             }
 
             if(options.ayref === options.yref) {
-                //we don't want to constrain if the tail is absolute
-                //or the slope (which is meaningful) will change.
+                // we don't want to constrain if the tail is absolute
+                // or the slope (which is meaningful) will change.
                 arrowY = annPosPx.y;
             } else {
                 arrowY = Lib.constrain(annPosPx.y - options.ay, 1, fullLayout.height - 1);

src/components/colorbar/draw.js

@@ -527,7 +527,7 @@ module.exports = function draw(gd, id) {
             container.attr('transform',
                 'translate(' + (gs.l - xoffset) + ',' + gs.t + ')');
 
-            //auto margin adjustment
+            // auto margin adjustment
             Plots.autoMargin(gd, id, {
                 x: opts.x,
                 y: opts.y,

src/components/drawing/index.js

@@ -204,8 +204,10 @@ function singlePointStyle(d, sel, trace, markerScale, lineScale, marker, markerL
 
             // handle multi-trace graph edit case
             if(d.ms === 'various' || marker.size === 'various') r = 3;
-            else r = subTypes.isBubble(trace) ?
+            else {
+                r = subTypes.isBubble(trace) ?
                         sizeFn(d.ms) : (marker.size || 6) / 2;
+            }
 
             // store the calculated size so hover can use it
             d.mrc = r;

src/components/legend/draw.js

@@ -590,7 +590,7 @@ function computeLegendDimensions(gd, groups, traces) {
             maxTraceWidth = 0,
             offsetX = 0;
 
-        //calculate largest width for traces and use for width of all legend items
+        // calculate largest width for traces and use for width of all legend items
         traces.each(function(d) {
             maxTraceWidth = Math.max(40 + d[0].width, maxTraceWidth);
         });
@@ -604,7 +604,7 @@ function computeLegendDimensions(gd, groups, traces) {
                 offsetX = 0;
                 rowHeight = rowHeight + maxTraceHeight;
                 opts.height = opts.height + maxTraceHeight;
-                //reset for next row
+                // reset for next row
                 maxTraceHeight = 0;
             }
 
@@ -615,7 +615,7 @@ function computeLegendDimensions(gd, groups, traces) {
             opts.width += traceGap + traceWidth;
             opts.height = Math.max(opts.height, legendItem.height);
 
-            //keep track of tallest trace in group
+            // keep track of tallest trace in group
             offsetX += traceGap + traceWidth;
             maxTraceHeight = Math.max(legendItem.height, maxTraceHeight);
         });

src/lib/matrix.js

@@ -93,7 +93,7 @@ exports.apply2DTransform = function(transform) {
         var args = arguments;
         if(args.length === 3) {
             args = args[0];
-        }//from map
+        }// from map
         var xy = arguments.length === 1 ? args[0] : [args[0], args[1]];
         return exports.dot(transform, [xy[0], xy[1], 1]).slice(0, 2);
     };

src/plot_api/plot_api.js

@@ -355,7 +355,7 @@ function setPlotContext(gd, config) {
         }
     }
 
-    //staticPlot forces a bunch of others:
+    // staticPlot forces a bunch of others:
     if(context.staticPlot) {
         context.editable = false;
         context.autosizable = false;
@@ -418,8 +418,8 @@ function plotPolar(gd, data, layout) {
 
     var titleLayout = function() {
         this.call(svgTextUtils.convertToTspans);
-        //TODO: html/mathjax
-        //TODO: center title
+        // TODO: html/mathjax
+        // TODO: center title
     };
 
     var title = polarPlotSVG.select('.title-group text')
@@ -1490,7 +1490,7 @@ function _restyle(gd, aobj, _traces) {
                 } else if(Registry.traceIs(cont, 'cartesian')) {
                     Lib.nestedProperty(cont, 'marker.colors')
                         .set(Lib.nestedProperty(cont, 'marker.color').get());
-                    //look for axes that are no longer in use and delete them
+                    // look for axes that are no longer in use and delete them
                     flagAxForDelete[cont.xaxis || 'x'] = true;
                     flagAxForDelete[cont.yaxis || 'y'] = true;
                 }

src/plots/cartesian/axes.js

@@ -55,7 +55,7 @@ axes.coerceRef = function(containerIn, containerOut, gd, axLetter, dflt) {
     return Lib.coerce(containerIn, containerOut, attrDef, refAttr);
 };
 
-//todo: duplicated per github PR 610. Should be consolidated with axes.coerceRef.
+// todo: duplicated per github PR 610. Should be consolidated with axes.coerceRef.
 // find the list of possible axes to reference with an axref or ayref attribute
 // and coerce it to that list
 axes.coerceARef = function(containerIn, containerOut, gd, axLetter, dflt) {
@@ -689,15 +689,15 @@ axes.autoTicks = function(ax, roughDTick) {
             ax.dtick = roundDTick(roughDTick, 1000, roundBase60);
         }
         else {
-            //milliseconds
+            // milliseconds
             base = Math.pow(10, Math.floor(Math.log(roughDTick) / Math.LN10));
             ax.dtick = roundDTick(roughDTick, base, roundBase10);
         }
     }
     else if(ax.type === 'log') {
         ax.tick0 = 0;
 
-        //only show powers of 10
+        // only show powers of 10
         if(roughDTick > 0.7) ax.dtick = Math.ceil(roughDTick);
         else if(Math.abs(ax.range[1] - ax.range[0]) < 1) {
             // span is less than one power of 10

src/plots/cartesian/graph_interact.js

@@ -1210,7 +1210,7 @@ function hoverAvoidOverlaps(hoverData, ax) {
                 p1 = g1[0];
             topOverlap = p0.pos + p0.dp + p0.size - p1.pos - p1.dp + p1.size;
 
-            //Only group points that lie on the same axes
+            // Only group points that lie on the same axes
             if(topOverlap > 0.01 && (p0.pmin === p1.pmin) && (p0.pmax === p1.pmax)) {
                 // push the new point(s) added to this group out of the way
                 for(j = g1.length - 1; j >= 0; j--) g1[j].dp += topOverlap;

src/plots/cartesian/layout_attributes.js

@@ -475,7 +475,7 @@ module.exports = {
         valType: 'enumerated',
         values: [
             'trace', 'category ascending', 'category descending', 'array'
-            /*, 'value ascending', 'value descending'*/ // value ascending / descending to be implemented later
+            /* , 'value ascending', 'value descending'*/ // value ascending / descending to be implemented later
         ],
         dflt: 'trace',
         role: 'info',
@@ -484,7 +484,7 @@ module.exports = {
             'By default, plotly uses *trace*, which specifies the order that is present in the data supplied.',
             'Set `categoryorder` to *category ascending* or *category descending* if order should be determined by',
             'the alphanumerical order of the category names.',
-            /*'Set `categoryorder` to *value ascending* or *value descending* if order should be determined by the',
+            /* 'Set `categoryorder` to *value ascending* or *value descending* if order should be determined by the',
             'numerical order of the values.',*/ // // value ascending / descending to be implemented later
             'Set `categoryorder` to *array* to derive the ordering from the attribute `categoryarray`. If a category',
             'is not found in the `categoryarray` array, the sorting behavior for that attribute will be identical to',

src/plots/gl3d/camera.js

@@ -112,7 +112,7 @@ function createCamera(element, options) {
                 var curCenter = view.computedCenter.slice();
                 view.setMode(mode);
                 if(mode === 'turntable') {
-                    //Hacky time warping stuff to generate smooth animation
+                    // Hacky time warping stuff to generate smooth animation
                     var t0 = now();
                     view._active.lookAt(t0, curEye, curCenter, curUp);
                     view._active.lookAt(t0 + 500, curEye, curCenter, [0, 0, 1]);
@@ -204,17 +204,17 @@ function createCamera(element, options) {
         var drot = Math.PI * camera.rotateSpeed;
 
         if((rotate && left && !ctrl && !alt && !shift) || (left && !ctrl && !alt && shift)) {
-            //Rotate
+            // Rotate
             view.rotate(t, flipX * drot * dx, -flipY * drot * dy, 0);
         }
 
         if((pan && left && !ctrl && !alt && !shift) || right || (left && ctrl && !alt && !shift)) {
-            //Pan
+            // Pan
             view.pan(t, -camera.translateSpeed * dx * distance, camera.translateSpeed * dy * distance, 0);
         }
 
         if((zoom && left && !ctrl && !alt && !shift) || middle || (left && !ctrl && alt && !shift)) {
-            //Zoom
+            // Zoom
             var kzoom = -camera.zoomSpeed * dy / window.innerHeight * (t - view.lastT()) * 100;
             view.pan(t, 0, 0, distance * (Math.exp(kzoom) - 1));
         }

src/plots/gl3d/layout/convert.js

@@ -76,15 +76,15 @@ proto.merge = function(sceneLayout) {
     for(var i = 0; i < 3; ++i) {
         var axes = sceneLayout[AXES_NAMES[i]];
 
-        /////// Axes labels //
+        // Axes labels
         opts.labels[i] = convertHTMLToUnicode(axes.title);
         if('titlefont' in axes) {
             if(axes.titlefont.color) opts.labelColor[i] = str2RgbaArray(axes.titlefont.color);
             if(axes.titlefont.family) opts.labelFont[i] = axes.titlefont.family;
             if(axes.titlefont.size) opts.labelSize[i] = axes.titlefont.size;
         }
 
-        /////// LINES ////////
+        // Lines
         if('showline' in axes) opts.lineEnable[i] = axes.showline;
         if('linecolor' in axes) opts.lineColor[i] = str2RgbaArray(axes.linecolor);
         if('linewidth' in axes) opts.lineWidth[i] = axes.linewidth;
@@ -100,8 +100,7 @@ proto.merge = function(sceneLayout) {
         if('zerolinecolor' in axes) opts.zeroLineColor[i] = str2RgbaArray(axes.zerolinecolor);
         if('zerolinewidth' in axes) opts.zeroLineWidth[i] = axes.zerolinewidth;
 
-        //////// TICKS /////////
-        /// tick lines
+        // tick lines
         if('ticks' in axes && !!axes.ticks) opts.lineTickEnable[i] = true;
         else opts.lineTickEnable[i] = false;
 

src/plots/gl3d/layout/tick_marks.js

@@ -6,8 +6,8 @@
 * LICENSE file in the root directory of this source tree.
 */
 
-/*eslint block-scoped-var: 0*/
-/*eslint no-redeclare: 0*/
+/* eslint block-scoped-var: 0*/
+/* eslint no-redeclare: 0*/
 
 'use strict';
 
@@ -82,7 +82,7 @@ function computeTickMarks(scene) {
 
     axesOptions.ticks = ticks;
 
-    //Calculate tick lengths dynamically
+    // Calculate tick lengths dynamically
     for(var i = 0; i < 3; ++i) {
         centerPoint[i] = 0.5 * (scene.glplot.bounds[0][i] + scene.glplot.bounds[1][i]);
         for(var j = 0; j < 2; ++j) {