vega-parser - npm Package Compare versions

Comparing version 6.0.3 to 6.0.4

build/vega-parser.min.js

@@ -1,1 +0,1 @@
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visualization",padding:0,autosize:"pad",background:null,events:{defaults:{allow:["wheel"]}},group:null,mark:null,arc:{fill:t},area:{fill:t},image:null,line:{stroke:t,strokeWidth:2},path:{stroke:t},rect:{fill:t},rule:{stroke:n},shape:{stroke:t},symbol:{fill:t,size:64},text:{fill:n,font:e,fontSize:11},trail:{fill:t,size:2},style:{"guide-label":{fill:n,font:e,fontSize:10},"guide-title":{fill:n,font:e,fontSize:11,fontWeight:"bold"},"group-title":{fill:n,font:e,fontSize:13,fontWeight:"bold"},"group-subtitle":{fill:n,font:e,fontSize:12},point:{size:30,strokeWidth:2,shape:"circle"},circle:{size:30,strokeWidth:2},square:{size:30,strokeWidth:2,shape:"square"},cell:{fill:"transparent",stroke:a}},title:{orient:"top",anchor:"middle",offset:4,subtitlePadding:3},axis:{minExtent:0,maxExtent:200,bandPosition:.5,domain:!0,domainWidth:1,domainColor:i,grid:!1,gridWidth:1,gridColor:a,labels:!0,labelAngle:0,labelLimit:180,labelOffset:0,labelPadding:2,ticks:!0,tickColor:i,tickOffset:0,tickRound:!0,tickSize:5,tickWidth:1,titlePadding:4},axisBand:{tickOffset:-.5},projection:{type:"mercator"},legend:{orient:"right",padding:0,gridAlign:"each",columnPadding:10,rowPadding:2,symbolDirection:"vertical",gradientDirection:"vertical",gradientLength:200,gradientThickness:16,gradientStrokeColor:a,gradientStrokeWidth:0,gradientLabelOffset:2,labelAlign:"left",labelBaseline:"middle",labelLimit:160,labelOffset:4,labelOverlap:!0,symbolLimit:30,symbolType:"circle",symbolSize:100,symbolOffset:0,symbolStrokeWidth:1.5,symbolBaseFillColor:"transparent",symbolBaseStrokeColor:i,titleLimit:180,titleOrient:"top",titlePadding:5,layout:{offset:18,direction:"horizontal",left:{direction:"vertical"},right:{direction:"vertical"}}},range:{category:{scheme:"tableau10"},ordinal:{scheme:"blues"},heatmap:{scheme:"yellowgreenblue"},ramp:{scheme:"blues"},diverging:{scheme:"blueorange",extent:[1,0]},symbol:["circle","square","triangle-up","cross","diamond","triangle-right","triangle-down","triangle-left"]}}}Kn.prototype=Zn.prototype={parse(e){return Gn(e,this)},fork(){return new Zn(this)},isSubscope(){return this._subid>0},toRuntime(){return this.finish(),{description:this.description,operators:this.operators,streams:this.streams,updates:this.updates,bindings:this.bindings,eventConfig:this.eventConfig,locale:this.locale}},id(){return(this._subid?this._subid+":":0)+this._id++},add(e){return this.operators.push(e),e.id=this.id(),e.refs&&(e.refs.forEach(t=>{t.$ref=e.id}),e.refs=null),e},proxy(e){const t=e instanceof M?I(e):e;return this.add(_e({value:t}))},addStream(e){return this.streams.push(e),e.id=this.id(),e},addUpdate(e){return this.updates.push(e),e},finish(){let e,t;for(e in this.root&&(this.root.root=!0),this.signals)this.signals[e].signal=e;for(e in this.scales)this.scales[e].scale=e;function n(e,t,n){let i,a;e&&(i=e.data||(e.data={}),a=i[t]||(i[t]=[]),a.push(n))}for(e in this.data){t=this.data[e],n(t.input,e,"input"),n(t.output,e,"output"),n(t.values,e,"values");for(const i in t.index)n(t.index[i],e,"index:"+i)}return this},pushState(e,t,n){this._encode.push(I(this.add(Fe({pulse:e})))),this._parent.push(t),this._lookup.push(n?I(this.proxy(n)):null),this._markpath.push(-1)},popState(){this._encode.pop(),this._parent.pop(),this._lookup.pop(),this._markpath.pop()},parent(){return t.peek(this._parent)},encode(){return t.peek(this._encode)},lookup(){return t.peek(this._lookup)},markpath(){const e=this._markpath;return++e[e.length-1]},fieldRef(e,n){if(t.isString(e))return X(e,n);e.signal||t.error("Unsupported field reference: "+t.stringValue(e));const i=e.signal;let a=this.field[i];if(!a){const e={name:this.signalRef(i)};n&&(e.as=n),this.field[i]=a=I(this.add($e(e)))}return a},compareRef(e){let n=!1;const i=e=>K(e)?(n=!0,this.signalRef(e.signal)):function(e){return e&&e.expr}(e)?(n=!0,this.exprRef(e.expr)):e,a=t.array(e.field).map(i),r=t.array(e.order).map(i);return n?I(this.add(ye({fields:a,orders:r}))):N(a,r)},keyRef(e,n){let i=!1;const a=this.signals;return e=t.array(e).map(e=>K(e)?(i=!0,I(a[e.signal])):e),i?I(this.add(Se({fields:e,flat:n}))):function(e,t){const n={$key:e};return t&&(n.$flat=!0),n}(e,n)},sortRef(e){if(!e)return e;const t=G(e.op,e.field),n=e.order||"ascending";return n.signal?I(this.add(ye({fields:t,orders:this.signalRef(n.signal)}))):N(t,n)},event(e,t){const n=e+":"+t;if(!this.events[n]){const i=this.id();this.streams.push({id:i,source:e,type:t}),this.events[n]=i}return this.events[n]},hasOwnSignal(e){return t.hasOwnProperty(this.signals,e)},addSignal(e,n){this.hasOwnSignal(e)&&t.error("Duplicate signal name: "+t.stringValue(e));const i=n instanceof M?n:this.add(H(n));return this.signals[e]=i},getSignal(e){return this.signals[e]||t.error("Unrecognized signal name: "+t.stringValue(e)),this.signals[e]},signalRef(e){return this.signals[e]?I(this.signals[e]):(t.hasOwnProperty(this.lambdas,e)||(this.lambdas[e]=this.add(H(null))),I(this.lambdas[e]))},parseLambdas(){const e=Object.keys(this.lambdas);for(let t=0,i=e.length;t<i;++t){const i=e[t],a=n.parseExpression(i,this),r=this.lambdas[i];r.params=a.$params,r.update=a.$expr}},property(e){return e&&e.signal?this.signalRef(e.signal):e},objectProperty(e){return e&&t.isObject(e)?this.signalRef(e.signal||ei(e)):e},exprRef(e,t){const i={expr:n.parseExpression(e,this)};return t&&(i.expr.$name=t),I(this.add(ke(i)))},addBinding(e,n){this.bindings||t.error("Nested signals do not support binding: "+t.stringValue(e)),this.bindings.push(t.extend({signal:e},n))},addScaleProj(e,n){t.hasOwnProperty(this.scales,e)&&t.error("Duplicate scale or projection name: "+t.stringValue(e)),this.scales[e]=this.add(n)},addScale(e,t){this.addScaleProj(e,Le(t))},addProjection(e,t){this.addScaleProj(e,Ee(t))},getScale(e){return this.scales[e]||t.error("Unrecognized scale name: "+t.stringValue(e)),this.scales[e]},scaleRef(e){return I(this.getScale(e))},scaleType(e){return this.getScale(e).params.type},projectionRef(e){return this.scaleRef(e)},projectionType(e){return this.scaleType(e)},addData(e,n){return t.hasOwnProperty(this.data,e)&&t.error("Duplicate data set name: "+t.stringValue(e)),this.data[e]=n},getData(e){return this.data[e]||t.error("Undefined data set name: "+t.stringValue(e)),this.data[e]},addDataPipeline(e,n){return t.hasOwnProperty(this.data,e)&&t.error("Duplicate data set name: "+t.stringValue(e)),this.addData(e,dn.fromEntries(this,n))}},e.AxisDomainRole=b,e.AxisGridRole=x,e.AxisLabelRole=k,e.AxisRole=y,e.AxisTickRole=v,e.AxisTitleRole=$,e.DataScope=dn,e.FrameRole=m,e.LegendEntryRole=O,e.LegendLabelRole=R,e.LegendRole=S,e.LegendSymbolRole=j,e.LegendTitleRole=w,e.MarkRole=g,e.Scope=Kn,e.ScopeRole=h,e.config=ii,e.parse=function(e,n,i){return t.isObject(e)||t.error("Input Vega specification must be an object."),Qn(e,new Kn(n=t.mergeConfig(ii(),n,e.config),i)).toRuntime()},e.signal=U,e.signalUpdates=de,e.stream=ie,Object.defineProperty(e,"__esModule",{value:!0})}));

package.json

 {
   "name": "vega-parser",
-  "version": "6.0.3",
+  "version": "6.0.4",
   "description": "Parse Vega specifications to runtime dataflows.",
@@ -27,9 +27,9 @@ "keywords": [
   "dependencies": {
-    "vega-dataflow": "^5.7.1",
-    "vega-event-selector": "^2.0.4",
-    "vega-functions": "^5.7.1",
-    "vega-scale": "^7.0.1",
-    "vega-util": "^1.15.0"
+    "vega-dataflow": "^5.7.2",
+    "vega-event-selector": "^2.0.5",
+    "vega-functions": "^5.7.2",
+    "vega-scale": "^7.1.0",
+    "vega-util": "^1.15.1"
   },
-  "gitHead": "28db83352e43e321dfe55fc5cb6489b211e45662"
+  "gitHead": "8d6793f4ca7eaaf2d22186764e9ce2dae687cf52"
 }

src/DataScope.js

@@ -19,9 +19,10 @@ import {Aggregate, Collect} from './transforms';
 DataScope.fromEntries = function(scope, entries) {
-  let n = entries.length,
-      i = 1,
-      input  = entries[0],
-      values = entries[n-1],
-      output = entries[n-2],
-      aggr = null;
+  const n = entries.length,
+        values = entries[n-1],
+        output = entries[n-2];
 
+  let input = entries[0],
+      aggr = null,
+      i = 1;
+
   if (input && input.type === 'load') {
@@ -47,7 +48,7 @@ input = entries[1];
 function addSortField(scope, p, sort) {
-  let as = aggrField(sort.op, sort.field),
-      s;
+  const as = aggrField(sort.op, sort.field);
+  let s;
 
   if (p.ops) {
-    for (let i=0, n=p.as.length; i<n; ++i) {
+    for (let i = 0, n = p.as.length; i < n; ++i) {
       if (p.as[i] === as) return;
@@ -68,5 +69,6 @@ }
 function cache(scope, ds, name, optype, field, counts, index) {
-  let cache = ds[name] || (ds[name] = {}),
-      sort = sortKey(counts),
-      k = fieldKey(field),
+  const cache = ds[name] || (ds[name] = {}),
+        sort = sortKey(counts);
+
+  let k = fieldKey(field),
       v, op;
@@ -95,6 +97,8 @@
   countsRef(scope, field, sort) {
-    let ds = this,
-        cache = ds.counts || (ds.counts = {}),
-        k = fieldKey(field), v, a, p;
+    const ds = this,
+          cache = ds.counts || (ds.counts = {}),
+          k = fieldKey(field);
 
+    let v, a, p;
+
     if (k != null) {
@@ -101,0 +105,0 @@ scope = ds.scope;

src/parsers/axis.js

@@ -17,14 +17,13 @@ import {addEncoders, extendEncode} from './encode/util';
 export default function(spec, scope) {
-  let config = axisConfig(spec, scope),
-      encode = spec.encode || {},
-      axisEncode = encode.axis || {},
-      name = axisEncode.name || undefined,
-      interactive = axisEncode.interactive,
-      style = axisEncode.style,
-      _ = lookup(spec, config),
-      band = tickBand(_),
-      datum, dataRef, ticksRef, size, children;
+  const config = axisConfig(spec, scope),
+        encode = spec.encode || {},
+        axisEncode = encode.axis || {},
+        name = axisEncode.name || undefined,
+        interactive = axisEncode.interactive,
+        style = axisEncode.style,
+        _ = lookup(spec, config),
+        band = tickBand(_);
 
   // single-element data source for axis group
-  datum = {
+  const datum = {
     scale:  spec.scale,
@@ -37,11 +36,6 @@ ticks:  !!_('ticks'),
   };
-  dataRef = ref(scope.add(Collect({}, [datum])));
+  const dataRef = ref(scope.add(Collect({}, [datum])));
 
-  // encoding properties for axis group item
-  axisEncode = extendEncode(
-    buildAxisEncode(_, spec), axisEncode, Skip
-  );
-
   // data source for axis ticks
-  ticksRef = ref(scope.add(AxisTicks({
+  const ticksRef = ref(scope.add(AxisTicks({
     scale:   scope.scaleRef(spec.scale),
@@ -57,3 +51,4 @@ extra:   scope.property(band.extra),
   // generate axis marks
-  children = [];
+  const children = [];
+  let size;
 
@@ -92,3 +87,3 @@ // include axis gridlines if requested
       from:        dataRef,
-      encode:      axisEncode,
+      encode:      extendEncode(buildAxisEncode(_, spec), axisEncode, Skip),
       marks:       children,
@@ -95,0 +90,0 @@ aria:        _('aria'),

src/parsers/data.js

@@ -17,3 +17,3 @@ import parseTransform from './transform';
   if (data.on) {
-    data.on.forEach(function(on) {
+    data.on.forEach(on => {
       parseTrigger(on, scope, data.name);
@@ -30,4 +30,4 @@ });
 function analyze(data, scope, ops) {
-  let output = [],
-      source = null,
+  const output = [];
+  let source = null,
       modify = false,
@@ -34,0 +34,0 @@ generate = false,

src/parsers/guides/axis-domain.js

@@ -10,7 +10,7 @@ import {ifX, ifY} from './axis-util';
 export default function(spec, config, userEncode, dataRef) {
-  let _ = lookup(spec, config),
-      orient = spec.orient,
-      encode, enter, update;
+  const _ = lookup(spec, config),
+        orient = spec.orient;
 
-  encode = {
+  let enter, update;
+  const encode = {
     enter: enter = {opacity: zero},
@@ -17,0 +17,0 @@ update: update = {opacity: one},

src/parsers/guides/axis-grid.js

@@ -12,11 +12,10 @@ import {getSign, ifX, ifY} from './axis-util';
 export default function(spec, config, userEncode, dataRef, band) {
-  let _ = lookup(spec, config),
-      orient = spec.orient,
-      vscale = spec.gridScale,
-      sign = getSign(orient, 1, -1),
-      offset = offsetValue(spec.offset, sign),
-      encode, enter, exit, update,
-      tickPos, gridStart, gridEnd, sz;
+  const _ = lookup(spec, config),
+        orient = spec.orient,
+        vscale = spec.gridScale,
+        sign = getSign(orient, 1, -1),
+        offset = offsetValue(spec.offset, sign);
 
-  encode = {
+  let enter, exit, update;
+  const encode = {
     enter: enter = {opacity: zero},
@@ -36,3 +35,3 @@ update: update = {opacity: one},
 
-  tickPos = {
+  const tickPos = {
     scale:  spec.scale,
@@ -46,9 +45,9 @@ field:  Value,
 
-  sz = ifX(orient, {signal: 'height'}, {signal: 'width'});
+  const sz = ifX(orient, {signal: 'height'}, {signal: 'width'});
 
-  gridStart = vscale
+  const gridStart = vscale
     ? {scale: vscale, range: 0, mult: sign, offset: offset}
     : {value: 0, offset: offset};
 
-  gridEnd = vscale
+  const gridEnd = vscale
     ? {scale: vscale, range: 1, mult: sign, offset: offset}
@@ -55,0 +54,0 @@ : extend(sz, {mult: sign, offset: offset});

src/parsers/guides/axis-labels.js

@@ -19,15 +19,15 @@ import {getSign, ifRight, ifTop, ifX, ifY, patch} from './axis-util';
 export default function(spec, config, userEncode, dataRef, size, band) {
-  let _ = lookup(spec, config),
-      orient = spec.orient,
-      scale = spec.scale,
-      sign = getSign(orient, -1, 1),
-      flush = deref(_('labelFlush')),
-      flushOffset = deref(_('labelFlushOffset')),
-      flushOn = flush === 0 || !!flush,
-      labelAlign = _('labelAlign'),
-      labelBaseline = _('labelBaseline'),
-      encode, enter, update, tickSize, tickPos,
-      align, baseline, bound, overlap, offsetExpr;
+  const _ = lookup(spec, config),
+        orient = spec.orient,
+        scale = spec.scale,
+        sign = getSign(orient, -1, 1),
+        flush = deref(_('labelFlush')),
+        flushOffset = deref(_('labelFlushOffset')),
+        labelAlign = _('labelAlign'),
+        labelBaseline = _('labelBaseline');
 
-  tickSize = encoder(size);
+  let flushOn = flush === 0 || !!flush,
+      update;
+
+  const tickSize = encoder(size);
   tickSize.mult = sign;
@@ -37,3 +37,3 @@ tickSize.offset = encoder(_('labelPadding') || 0);
 
-  tickPos = {
+  const tickPos = {
     scale:  scale,
@@ -45,3 +45,3 @@ field:  Value,
 
-  align = ifX(orient,
+  const align = ifX(orient,
     flushOn
@@ -53,3 +53,3 @@ ? flushExpr(scale, flush, '"left"', '"right"', '"center"')
 
-  baseline = ifX(orient,
+  const baseline = ifX(orient,
     ifTop(orient, 'bottom', 'top'),
@@ -61,6 +61,6 @@ flushOn
 
-  offsetExpr = flushExpr(scale, flush, `-(${flushOffset})`, flushOffset, 0);
+  const offsetExpr = flushExpr(scale, flush, `-(${flushOffset})`, flushOffset, 0);
   flushOn = flushOn && flushOffset;
 
-  enter = {
+  const enter = {
     opacity: zero,
@@ -71,3 +71,3 @@ x: ifX(orient, tickPos, tickSize),
 
-  encode = {
+  const encode = {
     enter: enter,
@@ -109,4 +109,4 @@ update: update = {
 
-  bound   = _('labelBound');
-  overlap = _('labelOverlap');
+  const bound   = _('labelBound');
+  let overlap = _('labelOverlap');
 
@@ -113,0 +113,0 @@ // if overlap method or bound defined, request label overlap removal

src/parsers/guides/axis-ticks.js

@@ -10,8 +10,8 @@ import {getSign, ifX, ifY} from './axis-util';
 export default function(spec, config, userEncode, dataRef, size, band) {
-  let _ = lookup(spec, config),
-      orient = spec.orient,
-      sign = getSign(orient, -1, 1),
-      encode, enter, exit, update, tickSize, tickPos;
+  const _ = lookup(spec, config),
+        orient = spec.orient,
+        sign = getSign(orient, -1, 1);
 
-  encode = {
+  let enter, exit, update;
+  const encode = {
     enter: enter = {opacity: zero},
@@ -31,6 +31,6 @@ update: update = {opacity: one},
 
-  tickSize = encoder(size);
+  const tickSize = encoder(size);
   tickSize.mult = sign;
 
-  tickPos = {
+  const tickPos = {
     scale:  spec.scale,
@@ -37,0 +37,0 @@ field:  Value,

src/parsers/guides/axis-title.js

@@ -11,8 +11,8 @@ import {getSign, ifTop, ifX, ifY, mult, patch} from './axis-util';
 export default function(spec, config, userEncode, dataRef) {
-  let _ = lookup(spec, config),
-      orient = spec.orient,
-      sign = getSign(orient, -1, 1),
-      encode, enter, update, titlePos;
+  const _ = lookup(spec, config),
+        orient = spec.orient,
+        sign = getSign(orient, -1, 1);
 
-  encode = {
+  let enter, update;
+  const encode = {
     enter: enter = {
@@ -32,3 +32,3 @@ opacity: zero,
 
-  titlePos = {
+  const titlePos = {
     signal: `lerp(range("${spec.scale}"), ${anchorExpr(0, 1, 0.5)})`
@@ -35,0 +35,0 @@ };

src/parsers/guides/guide-util.js

@@ -55,4 +55,4 @@ import {Center, End, Left, Right, Start, Vertical} from './constants';
 export function tickBand(_) {
-  let v = _('tickBand'),
-      offset = _('tickOffset'),
+  const v = _('tickBand');
+  let offset = _('tickOffset'),
       band, extra;
@@ -59,0 +59,0 @@

src/parsers/guides/legend-gradient-discrete.js

@@ -10,8 +10,9 @@ import {Perc, Perc2, Value, one, zero} from './constants';
 export default function(spec, scale, config, userEncode, dataRef) {
-  let _ = lookup(spec, config),
-      vertical = _.isVertical(),
-      thickness = _.gradientThickness(),
-      length = _.gradientLength(),
-      encode, enter, u, v, uu, vv, adjust = '';
+  const _ = lookup(spec, config),
+        vertical = _.isVertical(),
+        thickness = _.gradientThickness(),
+        length = _.gradientLength();
 
+  let u, v, uu, vv, adjust = '';
+
   vertical
@@ -21,3 +22,3 @@ ? (u = 'y', uu = 'y2', v = 'x', vv = 'width', adjust = '1-')
 
-  enter = {
+  const enter = {
     opacity: zero,
@@ -31,3 +32,3 @@ fill: {scale: scale, field: Value}
 
-  encode = {
+  const encode = {
     enter: enter,
@@ -34,0 +35,0 @@ update: extend({}, enter, {opacity: one}),

src/parsers/guides/legend-gradient-labels.js

@@ -16,10 +16,11 @@ import {
 export default function(spec, config, userEncode, dataRef) {
-  let _ = lookup(spec, config),
-      vertical = _.isVertical(),
-      thickness = encoder(_.gradientThickness()),
-      length = _.gradientLength(),
-      overlap = _('labelOverlap'),
-      encode, enter, update, u, v, adjust = '';
+  const _ = lookup(spec, config),
+        vertical = _.isVertical(),
+        thickness = encoder(_.gradientThickness()),
+        length = _.gradientLength();
 
-  encode = {
+  let overlap = _('labelOverlap'),
+      enter, update, u, v, adjust = '';
+
+  const encode = {
     enter: enter = {
@@ -26,0 +27,0 @@ opacity: zero

src/parsers/guides/legend-gradient.js

@@ -10,8 +10,9 @@ import {one, zero} from './constants';
 export default function(spec, scale, config, userEncode) {
-  let _ = lookup(spec, config),
-      vertical = _.isVertical(),
-      thickness = _.gradientThickness(),
-      length = _.gradientLength(),
-      encode, enter, start, stop, width, height;
+  const _ = lookup(spec, config),
+        vertical = _.isVertical(),
+        thickness = _.gradientThickness(),
+        length = _.gradientLength();
 
+  let enter, start, stop, width, height;
+
   if (vertical) {
@@ -29,3 +30,3 @@ start = [0, 1];
 
-  encode = {
+  const encode = {
     enter: enter = {
@@ -32,0 +33,0 @@ opacity: zero,

src/parsers/guides/legend-symbol-groups.js

@@ -14,16 +14,16 @@ import {
 export default function(spec, config, userEncode, dataRef, columns) {
-  let _ = lookup(spec, config),
-      entries = userEncode.entries,
-      interactive = !!(entries && entries.interactive),
-      name = entries ? entries.name : undefined,
-      height = _('clipHeight'),
-      symbolOffset = _('symbolOffset'),
-      valueRef = {data: 'value'},
-      encode = {},
-      xSignal = `(${columns}) ? datum.${Offset} : datum.${Size}`,
-      yEncode = height ? encoder(height) : {field: Size},
-      index = `datum.${Index}`,
-      ncols = `max(1, ${columns})`,
-      enter, update, labelOffset, symbols, labels, nrows, sort;
+  const _ = lookup(spec, config),
+        entries = userEncode.entries,
+        interactive = !!(entries && entries.interactive),
+        name = entries ? entries.name : undefined,
+        height = _('clipHeight'),
+        symbolOffset = _('symbolOffset'),
+        valueRef = {data: 'value'},
+        xSignal = `(${columns}) ? datum.${Offset} : datum.${Size}`,
+        yEncode = height ? encoder(height) : {field: Size},
+        index = `datum.${Index}`,
+        ncols = `max(1, ${columns})`;
 
+  let encode, enter, update, nrows, sort;
+
   yEncode.mult = 0.5;
@@ -67,3 +67,3 @@
 
-  LegendScales.forEach(function(scale) {
+  LegendScales.forEach(scale => {
     if (spec[scale]) {
@@ -74,3 +74,3 @@ update[scale] = enter[scale] = {scale: spec[scale], field: Value};
 
-  symbols = guideMark({
+  const symbols = guideMark({
     type: SymbolMark,
@@ -85,3 +85,3 @@ role: LegendSymbolRole,
   // -- LEGEND LABELS --
-  labelOffset = encoder(symbolOffset);
+  const labelOffset = encoder(symbolOffset);
   labelOffset.offset = _('labelOffset');
@@ -118,3 +118,3 @@
 
-  labels = guideMark({
+  const labels = guideMark({
     type:  TextMark,
@@ -121,0 +121,0 @@ role:  LegendLabelRole,

src/parsers/guides/legend-title.js

@@ -21,5 +21,5 @@ import {GuideTitleStyle, one, zero} from './constants';
 export default function(spec, config, userEncode, dataRef) {
-  let _ = lookup(spec, config), encode;
+  const _ = lookup(spec, config);
 
-  encode = {
+  const encode = {
     enter: {opacity: zero},
@@ -26,0 +26,0 @@ update: {

src/parsers/legend.js

@@ -24,13 +24,13 @@ import {addEncoders, extendEncode} from './encode/util';
 export default function(spec, scope) {
-  let config = scope.config.legend,
-      encode = spec.encode || {},
-      legendEncode = encode.legend || {},
-      name = legendEncode.name || undefined,
-      interactive = legendEncode.interactive,
-      style = legendEncode.style,
-      _ = lookup(spec, config),
-      scales = {}, scale = 0,
-      entryEncode, entryLayout, params, children,
-      type, datum, dataRef, entryRef;
+  const config = scope.config.legend,
+        encode = spec.encode || {},
+        _ = lookup(spec, config),
+        legendEncode = encode.legend || {},
+        name = legendEncode.name || undefined,
+        interactive = legendEncode.interactive,
+        style = legendEncode.style,
+        scales = {};
 
+  let scale = 0, entryLayout, params, children;
+
   // resolve scales and 'canonical' scale name
@@ -43,6 +43,6 @@ LegendScales.forEach(s => spec[s]
   // resolve legend type (symbol, gradient, or discrete gradient)
-  type = legendType(spec, scope.scaleType(scale));
+  const type = legendType(spec, scope.scaleType(scale));
 
   // single-element data source for legend group
-  datum = {
+  const datum = {
     title:  spec.title != null,
@@ -53,14 +53,9 @@ scales: scales,
   };
-  dataRef = ref(scope.add(Collect(null, [datum])));
+  const dataRef = ref(scope.add(Collect(null, [datum])));
 
-  // encoding properties for legend group
-  legendEncode = extendEncode(
-    buildLegendEncode(_, spec, config), legendEncode, Skip
-  );
-
   // encoding properties for legend entry sub-group
-  entryEncode = {enter: {x: {value: 0}, y: {value: 0}}};
+  const entryEncode = {enter: {x: {value: 0}, y: {value: 0}}};
 
   // data source for legend values
-  entryRef = ref(scope.add(LegendEntries(params = {
+  const entryRef = ref(scope.add(LegendEntries(params = {
     type:    type,
@@ -129,3 +124,3 @@ scale:   scope.scaleRef(scale),
       from:        dataRef,
-      encode:      legendEncode,
+      encode:      extendEncode(buildLegendEncode(_, spec, config), legendEncode, Skip),
       marks:       children,
@@ -158,5 +153,3 @@ aria:        _('aria'),
 function scaleCount(spec) {
-  return LegendScales.reduce(function(count, type) {
-    return count + (spec[type] ? 1 : 0);
-  }, 0);
+  return LegendScales.reduce((count, type) => count + (spec[type] ? 1 : 0), 0);
 }
@@ -163,0 +156,0 @@

src/parsers/mark.js

@@ -19,13 +19,14 @@ import parseEncode from './encode';
 export default function(spec, scope) {
-  let role = getRole(spec),
-      group = spec.type === GroupMark,
-      facet = spec.from && spec.from.facet,
-      layout = spec.layout || role === ScopeRole || role === FrameRole,
-      nested = role === MarkRole || layout || facet,
-      overlap = spec.overlap,
-      ops, op, input, store, enc, bound, render, sieve, name,
-      joinRef, markRef, encodeRef, layoutRef, boundRef;
+  const role = getRole(spec),
+        group = spec.type === GroupMark,
+        facet = spec.from && spec.from.facet,
+        overlap = spec.overlap;
 
+  let layout = spec.layout || role === ScopeRole || role === FrameRole,
+      ops, op, store, enc, name, layoutRef, boundRef;
+
+  const nested = role === MarkRole || layout || facet;
+
   // resolve input data
-  input = parseData(spec.from, group, scope);
+  const input = parseData(spec.from, group, scope);
 
@@ -38,3 +39,3 @@ // data join to map tuples to visual items
   }));
-  joinRef = ref(op);
+  const joinRef = ref(op);
 
@@ -55,3 +56,3 @@ // collect visual items
   }));
-  markRef = ref(op);
+  const markRef = ref(op);
 
@@ -89,3 +90,3 @@ // add visual encoders
 
-  encodeRef = ref(op);
+  const encodeRef = ref(op);
 
@@ -104,3 +105,3 @@ // add view layout operator if needed
   // compute bounding boxes
-  bound = scope.add(Bound({mark: markRef, pulse: layoutRef || encodeRef}));
+  const bound = scope.add(Bound({mark: markRef, pulse: layoutRef || encodeRef}));
   boundRef = ref(bound);
@@ -128,4 +129,4 @@
   // render / sieve items
-  render = scope.add(Render({pulse: boundRef}));
-  sieve = scope.add(Sieve({pulse: ref(render)}, undefined, scope.parent()));
+  const render = scope.add(Render({pulse: boundRef})),
+        sieve = scope.add(Sieve({pulse: ref(render)}, undefined, scope.parent()));
 
@@ -132,0 +133,0 @@ // if mark is named, make accessible as reactive geometry

src/parsers/marks/facet.js

@@ -8,6 +8,6 @@ import {getDataRef} from './data';
 export default function(spec, scope, group) {
-  let facet = spec.from.facet,
-      name = facet.name,
-      data = getDataRef(facet, scope),
-      subscope, source, values, op;
+  const facet = spec.from.facet,
+        name = facet.name,
+        data = getDataRef(facet, scope);
+  let op;
 
@@ -37,5 +37,5 @@ if (!facet.name) {
   // initialize facet subscope
-  subscope = scope.fork();
-  source = subscope.add(Collect());
-  values = subscope.add(Sieve({pulse: ref(source)}));
+  const subscope = scope.fork(),
+        source = subscope.add(Collect()),
+        values = subscope.add(Sieve({pulse: ref(source)}));
   subscope.addData(name, new DataScope(subscope, source, source, values));
@@ -42,0 +42,0 @@ subscope.addSignal('parent', null);

src/parsers/scale.js

@@ -29,4 +29,4 @@ import {
 export function parseScale(spec, scope) {
-  let params = scope.getScale(spec.name).params,
-      key;
+  const params = scope.getScale(spec.name).params;
+  let key;
 
@@ -105,3 +105,3 @@ params.domain = parseScaleDomain(spec.domain, spec, scope);
   const data = domain.data,
-        fields = domain.fields.reduce(function(dom, d) {
+        fields = domain.fields.reduce((dom, d) => {
           d = isString(d) ? {data: data, field: d}
@@ -134,7 +134,7 @@ : (isArray(d) || d.signal) ? fieldRef(d, scope)
 function ordinalMultipleDomain(domain, scope, fields) {
-  let sort = parseSort(domain.sort, true),
-      counts, p, a, c, v;
+  const sort = parseSort(domain.sort, true);
+  let a, v;
 
   // get value counts for each domain field
-  counts = fields.map(f => {
+  const counts = fields.map(f => {
     const data = scope.getData(f.data);
@@ -146,3 +146,3 @@ if (!data) dataLookupError(f.data);
   // aggregate the results from each domain field
-  p = {groupby: keyFieldRef, pulse: counts};
+  const p = {groupby: keyFieldRef, pulse: counts};
   if (sort) {
@@ -158,3 +158,3 @@ a = sort.op || 'count';
   // collect aggregate output
-  c = scope.add(Collect({pulse: ref(a)}));
+  const c = scope.add(Collect({pulse: ref(a)}));
 
@@ -242,4 +242,4 @@ // extract values for combined domain
 function parseScaleRange(spec, scope, params) {
-  let range = spec.range,
-      config = scope.config.range;
+  const config = scope.config.range;
+  let range = spec.range;
 
@@ -246,0 +246,0 @@ if (range.signal) {

src/parsers/signal-updates.js

@@ -6,4 +6,4 @@ import parseUpdate from './update';
 export default function(signal, scope) {
-  let op = scope.getSignal(signal.name),
-      expr = signal.update;
+  const op = scope.getSignal(signal.name);
+  let expr = signal.update;
 
@@ -10,0 +10,0 @@ if (signal.init) {

src/parsers/stream.js

@@ -33,4 +33,3 @@ import {Scope, View} from '../util';
 function eventStream(stream, scope) {
-  let id, entry;
-
+  let id;
   if (stream.type === Timer) {
@@ -43,3 +42,3 @@ id = scope.event(Timer, stream.throttle);
 
-  entry = streamParameters({stream: id}, stream, scope);
+  const entry = streamParameters({stream: id}, stream, scope);
   return Object.keys(entry).length === 1
@@ -46,0 +45,0 @@ ? id

src/parsers/title.js

@@ -18,14 +18,13 @@ import {addEncoders, extendEncode} from './encode/util';
 
-  let _ = lookup(spec, scope.config.title),
-      encode = spec.encode || {},
-      userEncode = encode.group || {},
-      name = userEncode.name || undefined,
-      interactive = userEncode.interactive,
-      style = userEncode.style,
-      children = [],
-      datum, dataRef;
+  const _ = lookup(spec, scope.config.title),
+        encode = spec.encode || {},
+        userEncode = encode.group || {},
+        name = userEncode.name || undefined,
+        interactive = userEncode.interactive,
+        style = userEncode.style,
+        children = [];
 
   // single-element data source for group title
-  datum = {};
-  dataRef = ref(scope.add(Collect(null, [datum])));
+  const datum = {},
+        dataRef = ref(scope.add(Collect(null, [datum])));
 
@@ -32,0 +31,0 @@ // include title text

src/parsers/transform.js

@@ -25,5 +25,7 @@ import {Params} from '../transforms';
 function parseParameters(def, spec, scope) {
-  let params = {}, pdef, i, n;
-  for (i=0, n=def.params.length; i<n; ++i) {
-    pdef = def.params[i];
+  const params = {},
+        n = def.params.length;
+
+  for (let i = 0; i < n; ++i) {
+    const pdef = def.params[i];
     params[pdef.name] = parseParameter(pdef, spec, scope);
@@ -113,8 +115,9 @@ }
 function parseSubParameter(def, value, scope) {
-  let params, pdef, k, i, n;
+  const n =def.params.length;
+  let pdef;
 
   // loop over defs to find matching key
-  for (i=0, n=def.params.length; i<n; ++i) {
+  for (let i = 0; i < n; ++i) {
     pdef = def.params[i];
-    for (k in pdef.key) {
+    for (const k in pdef.key) {
       if (pdef.key[k] !== value[k]) { pdef = null; break; }
@@ -128,3 +131,3 @@ }
   // parse params, create Params transform, return ref
-  params = extend(parseParameters(pdef, value, scope), pdef.key);
+  const params = extend(parseParameters(pdef, value, scope), pdef.key);
   return ref(scope.add(Params(params)));
@@ -131,0 +134,0 @@ }

src/parsers/trigger.js

@@ -5,11 +5,10 @@ import {operator} from '../util';
 export default function(spec, scope, name) {
-  let remove = spec.remove,
-      insert = spec.insert,
-      toggle = spec.toggle,
-      modify = spec.modify,
-      values = spec.values,
-      op = scope.add(operator()),
-      update, expr;
+  const remove = spec.remove,
+        insert = spec.insert,
+        toggle = spec.toggle,
+        modify = spec.modify,
+        values = spec.values,
+        op = scope.add(operator());
 
-  update = 'if(' + spec.trigger + ',modify("'
+  const update = 'if(' + spec.trigger + ',modify("'
     + name + '",'
@@ -21,5 +20,5 @@ + [insert, remove, toggle, modify, values]
 
-  expr = parseExpression(update, scope);
+  const expr = parseExpression(update, scope);
   op.update = expr.$expr;
   op.params = expr.$params;
 }

src/parsers/update.js

@@ -14,7 +14,8 @@ import parseStream from './stream';
 export default function(spec, scope, target) {
+  const encode = spec.encode,
+        entry = {target: target};
+
   let events = spec.events,
       update = spec.update,
-      encode = spec.encode,
-      sources = [],
-      entry = {target: target};
+      sources = [];
 
@@ -21,0 +22,0 @@ if (!events) {

src/Scope.js

@@ -109,3 +109,3 @@ import DataScope from './DataScope';
     if (op.refs) {
-      op.refs.forEach(function(ref) { ref.$ref = op.id; });
+      op.refs.forEach(ref => { ref.$ref = op.id; });
       op.refs = null;
@@ -212,4 +212,4 @@ }
 
-    let s = field.signal,
-        f = this.field[s];
+    const s = field.signal;
+    let f = this.field[s];
 
@@ -418,9 +418,7 @@ if (!f) {
 function arrayLambda(array) {
-  let code = '[',
-      i = 0,
-      n = array.length,
-      value;
+  const n = array.length;
+  let code = '[';
 
-  for (; i<n; ++i) {
-    value = array[i];
+  for (let i = 0; i<n; ++i) {
+    const value = array[i];
     code += (i > 0 ? ',' : '')
@@ -448,2 +446,2 @@ + (isObject(value)
   return code + '}';
-}
+}

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Worsened metrics

Total package byte prevSize

285246

decreased by-0.87%

Lines of code

7163

decreased by-0.43%

Dependency changes

• Updatedvega-dataflow@^5.7.2

• Updatedvega-event-selector@^2.0.5

• Updatedvega-functions@^5.7.2

• Updatedvega-scale@^7.1.0

• Updatedvega-util@^1.15.1