mapbox · kkaefer · Feb 26, 2020 · Feb 24, 2020
diff --git a/build/generate-flow-typed-style-spec.js b/build/generate-flow-typed-style-spec.js
@@ -33,7 +33,7 @@ function flowType(property) {
             case 'light':
                 return 'LightSpecification';
             case 'sources':
-                return '{[string]: SourceSpecification}';
+                return '{[_: string]: SourceSpecification}';
             case '*':
                 return 'mixed';
             default:
@@ -122,7 +122,7 @@ export type FormattedSpecification = string;
 
 export type ResolvedImageSpecification = string;
 
-export type PromoteIdSpecification = {[string]: string} | string;
+export type PromoteIdSpecification = {[_: string]: string} | string;
 
 export type FilterSpecification =
     | ['has', string]

diff --git a/flow-typed/vector-tile.js b/flow-typed/vector-tile.js
@@ -3,7 +3,7 @@ import type Point from '@mapbox/point-geometry';
 import type { GeoJSONFeature } from '@mapbox/geojson-types';
 
 declare interface VectorTile {
-    layers: {[string]: VectorTileLayer};
+    layers: {[_: string]: VectorTileLayer};
 }
 
 declare interface VectorTileLayer {
@@ -18,7 +18,7 @@ declare interface VectorTileFeature {
     extent: number;
     type: 1 | 2 | 3;
     id: number;
-    properties: {[string]: string | number | boolean};
+    properties: {[_: string]: string | number | boolean};
 
     loadGeometry(): Array<Array<Point>>;
     toGeoJSON(x: number, y: number, z: number): GeoJSONFeature;

diff --git a/src/data/bucket.js b/src/data/bucket.js
@@ -41,7 +41,7 @@ export type BucketFeature = {|
     properties: Object,
     type: 1 | 2 | 3,
     id?: any,
-    +patterns: {[string]: {"min": string, "mid": string, "max": string}},
+    +patterns: {[_: string]: {"min": string, "mid": string, "max": string}},
     sortKey?: number
 |};
 
@@ -75,7 +75,7 @@ export interface Bucket {
     +stateDependentLayers: Array<any>;
     +stateDependentLayerIds: Array<string>;
     populate(features: Array<IndexedFeature>, options: PopulateParameters): void;
-    update(states: FeatureStates, vtLayer: VectorTileLayer, imagePositions: {[string]: ImagePosition}): void;
+    update(states: FeatureStates, vtLayer: VectorTileLayer, imagePositions: {[_: string]: ImagePosition}): void;
     isEmpty(): boolean;
 
     upload(context: Context): void;
@@ -91,7 +91,7 @@ export interface Bucket {
     destroy(): void;
 }
 
-export function deserialize(input: Array<Bucket>, style: Style): {[string]: Bucket} {
+export function deserialize(input: Array<Bucket>, style: Style): {[_: string]: Bucket} {
     const output = {};
 
     // Guard against the case where the map's style has been set to null while

diff --git a/src/data/bucket/circle_bucket.js b/src/data/bucket/circle_bucket.js
@@ -123,7 +123,7 @@ class CircleBucket<Layer: CircleStyleLayer | HeatmapStyleLayer> implements Bucke
         }
     }
 
-    update(states: FeatureStates, vtLayer: VectorTileLayer, imagePositions: {[string]: ImagePosition}) {
+    update(states: FeatureStates, vtLayer: VectorTileLayer, imagePositions: {[_: string]: ImagePosition}) {
         if (!this.stateDependentLayers.length) return;
         this.programConfigurations.updatePaintArrays(states, vtLayer, this.stateDependentLayers, imagePositions);
     }

diff --git a/src/data/bucket/fill_bucket.js b/src/data/bucket/fill_bucket.js
@@ -124,12 +124,12 @@ class FillBucket implements Bucket {
         }
     }
 
-    update(states: FeatureStates, vtLayer: VectorTileLayer, imagePositions: {[string]: ImagePosition}) {
+    update(states: FeatureStates, vtLayer: VectorTileLayer, imagePositions: {[_: string]: ImagePosition}) {
         if (!this.stateDependentLayers.length) return;
         this.programConfigurations.updatePaintArrays(states, vtLayer, this.stateDependentLayers, imagePositions);
     }
 
-    addFeatures(options: PopulateParameters, imagePositions: {[string]: ImagePosition}) {
+    addFeatures(options: PopulateParameters, imagePositions: {[_: string]: ImagePosition}) {
         for (const feature of this.patternFeatures) {
             this.addFeature(feature, feature.geometry, feature.index, imagePositions);
         }
@@ -162,7 +162,7 @@ class FillBucket implements Bucket {
         this.segments2.destroy();
     }
 
-    addFeature(feature: BucketFeature, geometry: Array<Array<Point>>, index: number, imagePositions: {[string]: ImagePosition}) {
+    addFeature(feature: BucketFeature, geometry: Array<Array<Point>>, index: number, imagePositions: {[_: string]: ImagePosition}) {
         for (const polygon of classifyRings(geometry, EARCUT_MAX_RINGS)) {
             let numVertices = 0;
             for (const ring of polygon) {

diff --git a/src/data/bucket/fill_extrusion_bucket.js b/src/data/bucket/fill_extrusion_bucket.js
@@ -120,14 +120,14 @@ class FillExtrusionBucket implements Bucket {
         }
     }
 
-    addFeatures(options: PopulateParameters, imagePositions: {[string]: ImagePosition}) {
+    addFeatures(options: PopulateParameters, imagePositions: {[_: string]: ImagePosition}) {
         for (const feature of this.features) {
             const {geometry} = feature;
             this.addFeature(feature, geometry, feature.index, imagePositions);
         }
     }
 
-    update(states: FeatureStates, vtLayer: VectorTileLayer, imagePositions: {[string]: ImagePosition}) {
+    update(states: FeatureStates, vtLayer: VectorTileLayer, imagePositions: {[_: string]: ImagePosition}) {
         if (!this.stateDependentLayers.length) return;
         this.programConfigurations.updatePaintArrays(states, vtLayer, this.stateDependentLayers, imagePositions);
     }
@@ -157,7 +157,7 @@ class FillExtrusionBucket implements Bucket {
         this.segments.destroy();
     }
 
-    addFeature(feature: BucketFeature, geometry: Array<Array<Point>>, index: number, imagePositions: {[string]: ImagePosition}) {
+    addFeature(feature: BucketFeature, geometry: Array<Array<Point>>, index: number, imagePositions: {[_: string]: ImagePosition}) {
         for (const polygon of classifyRings(geometry, EARCUT_MAX_RINGS)) {
             let numVertices = 0;
             for (const ring of polygon) {

diff --git a/src/data/bucket/line_bucket.js b/src/data/bucket/line_bucket.js
@@ -167,12 +167,12 @@ class LineBucket implements Bucket {
         }
     }
 
-    update(states: FeatureStates, vtLayer: VectorTileLayer, imagePositions: {[string]: ImagePosition}) {
+    update(states: FeatureStates, vtLayer: VectorTileLayer, imagePositions: {[_: string]: ImagePosition}) {
         if (!this.stateDependentLayers.length) return;
         this.programConfigurations.updatePaintArrays(states, vtLayer, this.stateDependentLayers, imagePositions);
     }
 
-    addFeatures(options: PopulateParameters, imagePositions: {[string]: ImagePosition}) {
+    addFeatures(options: PopulateParameters, imagePositions: {[_: string]: ImagePosition}) {
         for (const feature of this.patternFeatures) {
             this.addFeature(feature, feature.geometry, feature.index, imagePositions);
         }
@@ -203,7 +203,7 @@ class LineBucket implements Bucket {
         this.segments.destroy();
     }
 
-    addFeature(feature: BucketFeature, geometry: Array<Array<Point>>, index: number, imagePositions: {[string]: ImagePosition}) {
+    addFeature(feature: BucketFeature, geometry: Array<Array<Point>>, index: number, imagePositions: {[_: string]: ImagePosition}) {
         const layout = this.layers[0].layout;
         const join = layout.get('line-join').evaluate(feature, {});
         const cap = layout.get('line-cap');
@@ -215,7 +215,7 @@ class LineBucket implements Bucket {
         }
     }
 
-    addLine(vertices: Array<Point>, feature: BucketFeature, join: string, cap: string, miterLimit: number, roundLimit: number, index: number, imagePositions: {[string]: ImagePosition}) {
+    addLine(vertices: Array<Point>, feature: BucketFeature, join: string, cap: string, miterLimit: number, roundLimit: number, index: number, imagePositions: {[_: string]: ImagePosition}) {
         this.distance = 0;
         this.scaledDistance = 0;
         this.totalDistance = 0;

diff --git a/src/data/bucket/symbol_bucket.js b/src/data/bucket/symbol_bucket.js
@@ -321,7 +321,7 @@ class SymbolBucket implements Bucket {
     sortKeyRanges: Array<SortKeyRange>;
     pixelRatio: number;
     tilePixelRatio: number;
-    compareText: {[string]: Array<Point>};
+    compareText: {[_: string]: Array<Point>};
     fadeStartTime: number;
     sortFeaturesByKey: boolean;
     sortFeaturesByY: boolean;
@@ -387,7 +387,7 @@ class SymbolBucket implements Bucket {
         this.symbolInstances = new SymbolInstanceArray();
     }
 
-    calculateGlyphDependencies(text: string, stack: {[number]: boolean}, textAlongLine: boolean, allowVerticalPlacement: boolean, doesAllowVerticalWritingMode: boolean) {
+    calculateGlyphDependencies(text: string, stack: {[_: number]: boolean}, textAlongLine: boolean, allowVerticalPlacement: boolean, doesAllowVerticalWritingMode: boolean) {
         for (let i = 0; i < text.length; i++) {
             stack[text.charCodeAt(i)] = true;
             if ((textAlongLine || allowVerticalPlacement) && doesAllowVerticalWritingMode) {
@@ -523,7 +523,7 @@ class SymbolBucket implements Bucket {
         }
     }
 
-    update(states: FeatureStates, vtLayer: VectorTileLayer, imagePositions: {[string]: ImagePosition}) {
+    update(states: FeatureStates, vtLayer: VectorTileLayer, imagePositions: {[_: string]: ImagePosition}) {
         if (!this.stateDependentLayers.length) return;
         this.text.programConfigurations.updatePaintArrays(states, vtLayer, this.layers, imagePositions);
         this.icon.programConfigurations.updatePaintArrays(states, vtLayer, this.layers, imagePositions);

diff --git a/src/data/feature_index.js b/src/data/feature_index.js
@@ -51,7 +51,7 @@ class FeatureIndex {
     rawTileData: ArrayBuffer;
     bucketLayerIDs: Array<Array<string>>;
 
-    vtLayers: {[string]: VectorTileLayer};
+    vtLayers: {[_: string]: VectorTileLayer};
     sourceLayerCoder: DictionaryCoder;
 
     constructor(tileID: OverscaledTileID, promoteId?: ?PromoteIdSpecification) {
@@ -92,7 +92,7 @@ class FeatureIndex {
         }
     }
 
-    loadVTLayers(): {[string]: VectorTileLayer} {
+    loadVTLayers(): {[_: string]: VectorTileLayer} {
         if (!this.vtLayers) {
             this.vtLayers = new vt.VectorTile(new Protobuf(this.rawTileData)).layers;
             this.sourceLayerCoder = new DictionaryCoder(this.vtLayers ? Object.keys(this.vtLayers).sort() : ['_geojsonTileLayer']);
@@ -101,7 +101,7 @@ class FeatureIndex {
     }
 
     // Finds non-symbol features in this tile at a particular position.
-    query(args: QueryParameters, styleLayers: {[string]: StyleLayer}, sourceFeatureState: SourceFeatureState): {[string]: Array<{ featureIndex: number, feature: GeoJSONFeature }>} {
+    query(args: QueryParameters, styleLayers: {[_: string]: StyleLayer}, sourceFeatureState: SourceFeatureState): {[_: string]: Array<{ featureIndex: number, feature: GeoJSONFeature }>} {
         this.loadVTLayers();
 
         const params = args.params || {},
@@ -164,13 +164,13 @@ class FeatureIndex {
     }
 
     loadMatchingFeature(
-        result: {[string]: Array<{ featureIndex: number, feature: GeoJSONFeature }>},
+        result: {[_: string]: Array<{ featureIndex: number, feature: GeoJSONFeature }>},
         bucketIndex: number,
         sourceLayerIndex: number,
         featureIndex: number,
         filter: FeatureFilter,
         filterLayerIDs: Array<string>,
-        styleLayers: {[string]: StyleLayer},
+        styleLayers: {[_: string]: StyleLayer},
         intersectionTest?: (feature: VectorTileFeature, styleLayer: StyleLayer, id: string | number | void) => boolean | number) {
 
         const layerIDs = this.bucketLayerIDs[bucketIndex];
@@ -219,7 +219,7 @@ class FeatureIndex {
                          sourceLayerIndex: number,
                          filterSpec: FilterSpecification,
                          filterLayerIDs: Array<string>,
-                         styleLayers: {[string]: StyleLayer}) {
+                         styleLayers: {[_: string]: StyleLayer}) {
         const result = {};
         this.loadVTLayers();
 

diff --git a/src/data/program_configuration.js b/src/data/program_configuration.js
@@ -77,8 +77,8 @@ function packColor(color: Color): [number, number] {
  */
 
 interface AttributeBinder {
-    populatePaintArray(length: number, feature: Feature, imagePositions: {[string]: ImagePosition}, formattedSection?: FormattedSection): void;
-    updatePaintArray(start: number, length: number, feature: Feature, featureState: FeatureState, imagePositions: {[string]: ImagePosition}): void;
+    populatePaintArray(length: number, feature: Feature, imagePositions: {[_: string]: ImagePosition}, formattedSection?: FormattedSection): void;
+    updatePaintArray(start: number, length: number, feature: Feature, featureState: FeatureState, imagePositions: {[_: string]: ImagePosition}): void;
     upload(Context): void;
     destroy(): void;
 }
@@ -161,7 +161,7 @@ class SourceExpressionBinder implements AttributeBinder {
         this.paintVertexArray = new PaintVertexArray();
     }
 
-    populatePaintArray(newLength: number, feature: Feature, imagePositions: {[string]: ImagePosition}, formattedSection?: FormattedSection) {
+    populatePaintArray(newLength: number, feature: Feature, imagePositions: {[_: string]: ImagePosition}, formattedSection?: FormattedSection) {
         const start = this.paintVertexArray.length;
         const value = this.expression.evaluate(new EvaluationParameters(0), feature, {}, [], formattedSection);
         this.paintVertexArray.resize(newLength);
@@ -232,7 +232,7 @@ class CompositeExpressionBinder implements AttributeBinder, UniformBinder {
         this.paintVertexArray = new PaintVertexArray();
     }
 
-    populatePaintArray(newLength: number, feature: Feature, imagePositions: {[string]: ImagePosition}, formattedSection?: FormattedSection) {
+    populatePaintArray(newLength: number, feature: Feature, imagePositions: {[_: string]: ImagePosition}, formattedSection?: FormattedSection) {
         const min = this.expression.evaluate(new EvaluationParameters(this.zoom), feature, {}, [], formattedSection);
         const max = this.expression.evaluate(new EvaluationParameters(this.zoom + 1), feature, {}, [], formattedSection);
         const start = this.paintVertexArray.length;
@@ -319,14 +319,14 @@ class CrossFadedCompositeBinder implements AttributeBinder {
         this.zoomOutPaintVertexArray = new PaintVertexArray();
     }
 
-    populatePaintArray(length: number, feature: Feature, imagePositions: {[string]: ImagePosition}) {
+    populatePaintArray(length: number, feature: Feature, imagePositions: {[_: string]: ImagePosition}) {
         const start = this.zoomInPaintVertexArray.length;
         this.zoomInPaintVertexArray.resize(length);
         this.zoomOutPaintVertexArray.resize(length);
         this._setPaintValues(start, length, feature.patterns && feature.patterns[this.layerId], imagePositions);
     }
 
-    updatePaintArray(start: number, end: number, feature: Feature, featureState: FeatureState, imagePositions: {[string]: ImagePosition}) {
+    updatePaintArray(start: number, end: number, feature: Feature, featureState: FeatureState, imagePositions: {[_: string]: ImagePosition}) {
         this._setPaintValues(start, end, feature.patterns && feature.patterns[this.layerId], imagePositions);
     }
 
@@ -388,13 +388,13 @@ class CrossFadedCompositeBinder implements AttributeBinder {
  * @private
  */
 export default class ProgramConfiguration {
-    binders: { [string]: (AttributeBinder | UniformBinder) };
+    binders: {[_: string]: (AttributeBinder | UniformBinder) };
     cacheKey: string;
     layoutAttributes: Array<StructArrayMember>;
 
     _buffers: Array<VertexBuffer>;
 
-    constructor(layer: TypedStyleLayer, zoom: number, filterProperties: (string) => boolean, layoutAttributes: Array<StructArrayMember>) {
+    constructor(layer: TypedStyleLayer, zoom: number, filterProperties: (_: string) => boolean, layoutAttributes: Array<StructArrayMember>) {
         this.binders = {};
         this.layoutAttributes = layoutAttributes;
         this._buffers = [];
@@ -442,7 +442,7 @@ export default class ProgramConfiguration {
         return binder instanceof SourceExpressionBinder || binder instanceof CompositeExpressionBinder ? binder.maxValue : 0;
     }
 
-    populatePaintArrays(newLength: number, feature: Feature, imagePositions: {[string]: ImagePosition}, formattedSection?: FormattedSection) {
+    populatePaintArrays(newLength: number, feature: Feature, imagePositions: {[_: string]: ImagePosition}, formattedSection?: FormattedSection) {
         for (const property in this.binders) {
             const binder = this.binders[property];
             if (binder instanceof SourceExpressionBinder || binder instanceof CompositeExpressionBinder || binder instanceof CrossFadedCompositeBinder)
@@ -457,7 +457,7 @@ export default class ProgramConfiguration {
         }
     }
 
-    updatePaintArrays(featureStates: FeatureStates, featureMap: FeaturePositionMap, vtLayer: VectorTileLayer, layer: TypedStyleLayer, imagePositions: {[string]: ImagePosition}): boolean {
+    updatePaintArrays(featureStates: FeatureStates, featureMap: FeaturePositionMap, vtLayer: VectorTileLayer, layer: TypedStyleLayer, imagePositions: {[_: string]: ImagePosition}): boolean {
         let dirty: boolean = false;
         for (const id in featureStates) {
             const positions = featureMap.getPositions(id);
@@ -554,12 +554,12 @@ export default class ProgramConfiguration {
 }
 
 export class ProgramConfigurationSet<Layer: TypedStyleLayer> {
-    programConfigurations: {[string]: ProgramConfiguration};
+    programConfigurations: {[_: string]: ProgramConfiguration};
     needsUpload: boolean;
     _featureMap: FeaturePositionMap;
     _bufferOffset: number;
 
-    constructor(layoutAttributes: Array<StructArrayMember>, layers: $ReadOnlyArray<Layer>, zoom: number, filterProperties: (string) => boolean = () => true) {
+    constructor(layoutAttributes: Array<StructArrayMember>, layers: $ReadOnlyArray<Layer>, zoom: number, filterProperties: (_: string) => boolean = () => true) {
         this.programConfigurations = {};
         for (const layer of layers) {
             this.programConfigurations[layer.id] = new ProgramConfiguration(layer, zoom, filterProperties, layoutAttributes);
@@ -569,7 +569,7 @@ export class ProgramConfigurationSet<Layer: TypedStyleLayer> {
         this._bufferOffset = 0;
     }
 
-    populatePaintArrays(length: number, feature: Feature, index: number, imagePositions: {[string]: ImagePosition}, formattedSection?: FormattedSection) {
+    populatePaintArrays(length: number, feature: Feature, index: number, imagePositions: {[_: string]: ImagePosition}, formattedSection?: FormattedSection) {
         for (const key in this.programConfigurations) {
             this.programConfigurations[key].populatePaintArrays(length, feature, imagePositions, formattedSection);
         }
@@ -582,7 +582,7 @@ export class ProgramConfigurationSet<Layer: TypedStyleLayer> {
         this.needsUpload = true;
     }
 
-    updatePaintArrays(featureStates: FeatureStates, vtLayer: VectorTileLayer, layers: $ReadOnlyArray<TypedStyleLayer>, imagePositions: {[string]: ImagePosition}) {
+    updatePaintArrays(featureStates: FeatureStates, vtLayer: VectorTileLayer, layers: $ReadOnlyArray<TypedStyleLayer>, imagePositions: {[_: string]: ImagePosition}) {
         for (const layer of layers) {
             this.needsUpload = this.programConfigurations[layer.id].updatePaintArrays(featureStates, this._featureMap, vtLayer, layer, imagePositions) || this.needsUpload;
         }

diff --git a/src/data/segment.js b/src/data/segment.js
@@ -13,7 +13,7 @@ export type Segment = {
     primitiveOffset: number,
     vertexLength: number,
     primitiveLength: number,
-    vaos: {[string]: VertexArrayObject}
+    vaos: {[_: string]: VertexArrayObject}
 }
 
 class SegmentVector {

diff --git a/src/geo/transform.js b/src/geo/transform.js
@@ -53,8 +53,8 @@ class Transform {
     _center: LngLat;
     _edgeInsets: EdgeInsets;
     _constraining: boolean;
-    _posMatrixCache: {[string]: Float32Array};
-    _alignedPosMatrixCache: {[string]: Float32Array};
+    _posMatrixCache: {[_: string]: Float32Array};
+    _alignedPosMatrixCache: {[_: string]: Float32Array};
 
     constructor(minZoom: ?number, maxZoom: ?number, minPitch: ?number, maxPitch: ?number, renderWorldCopies: boolean | void) {
         this.tileSize = 512; // constant

diff --git a/src/render/draw_symbol.js b/src/render/draw_symbol.js
@@ -52,7 +52,7 @@ type SymbolTileRenderState = {
     }
 };
 
-function drawSymbols(painter: Painter, sourceCache: SourceCache, layer: SymbolStyleLayer, coords: Array<OverscaledTileID>, variableOffsets: {[CrossTileID]: VariableOffset}) {
+function drawSymbols(painter: Painter, sourceCache: SourceCache, layer: SymbolStyleLayer, coords: Array<OverscaledTileID>, variableOffsets: {[_: CrossTileID]: VariableOffset}) {
     if (painter.renderPass !== 'translucent') return;
 
     // Disable the stencil test so that labels aren't clipped to tile boundaries.