All files index.js

91.95% Statements 320/348
86.06% Branches 210/244
96% Functions 48/50
92.09% Lines 303/329

Press n or j to go to the next uncovered block, b, p or k for the previous block.

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914                                                                          1x   1x 1x     9x 1x 1x 1x                                   9x     1x 1x               9x 9x 4x   5x 9x 9x   5x 9x 9x 9x   5x       5x 4x 4x 4x 4x       5x 5x     1x     79x 19x   79x       35x 35x 35x                                                                           39x       39x 1x   39x 2x   37x 1x             33x 33x                 32x     32x                   36x 18x 18x 18x   18x   18x 2x 2x   16x       18x 15x   3x               18x 3x   15x 15x         15x     1x         18x         1x     17x       17x   18x 18x 18x   18x       18x       18x 18x               18x 15x     18x 4x               4x 2x     18x 2x 1x 1x   2x   16x   17x 15x 15x   15x 2x 2x                               4x 4x 4x 4x             108x 4044x 108x 108x     108x       24x 24x 10x 10x 10x                         14x 14x 14x 14x 6x       6x   14x 14x 15x 15x 13x 13x     13x 10x 22x     13x 13x 13x 13x 13x 13x 5x                       5x   13x 13x 2x 1x 1x 1x     14x 11x           14x       14x 14x   14x       11x 11x           11x 17x 17x 11x 11x 11x 11x 11x 11x 11x     11x                   11x 6x         11x               11x     1x   10x   10x 1x   9x       10x                       11x 11x               11x       30x 30x 30x         30x         30x     30x 10x   30x 10x   30x 20x         30x 8x   8x 8x       30x 30x     30x 1021x 1021x 1021x   1021x 13x   1008x   1008x 35x 5x 5x   35x 35x 35x 16x 16x 4x 4x 16x                   12x 6x     35x 27x     35x 14x 21x 11x 11x     11x 11x                   11x 10x 10x   35x 35x 35x     1008x     30x 30x 30x                                                                                               30x 30x 30x 30x   30x 25x         30x 9x 9x       9x 9x       9x       9x   9x 9x 9x 9x   9x   9x                 21x 21x   20x           30x                                                 3x 2x       3x 3x   3x                                         40x 40x 40x 40x 1512x 1512x 1011x 1011x     40x 40x 39x 39x 1x         1x   38x 25x 25x 24x 24x 6x             24x 5x       38x       26x                 25x 25x     1x       12x       40x 40x 38x     40x 19x   21x                                 1x 1x 1x 1x 1x                             2x 2x 2x 4x 1x     2x                         2x 2x 3x 3x 1x            
/*
ol-mapbox-style - Use Mapbox Style objects with OpenLayers
Copyright 2016-present ol-mapbox-style contributors
License: https://raw.githubusercontent.com/openlayers/ol-mapbox-style/master/LICENSE
*/
 
import GeoJSON from 'ol/format/GeoJSON.js';
import MVT from 'ol/format/MVT.js';
import Map from 'ol/Map.js';
import TileGrid from 'ol/tilegrid/TileGrid.js';
import TileJSON from 'ol/source/TileJSON.js';
import TileLayer from 'ol/layer/Tile.js';
import VectorLayer from 'ol/layer/Vector.js';
import VectorSource from 'ol/source/Vector.js';
import VectorTileLayer from 'ol/layer/VectorTile.js';
import VectorTileSource from 'ol/source/VectorTile.js';
import View from 'ol/View.js';
import applyStyleFunction, {
  _colorWithOpacity,
  getValue,
} from './stylefunction.js';
import googleFonts from 'webfont-matcher/lib/fonts/google.js';
import mb2css from 'mapbox-to-css-font';
import {Color} from '@mapbox/mapbox-gl-style-spec';
import {assign, defaultResolutions} from './util.js';
import {createXYZ} from 'ol/tilegrid.js';
import {fromLonLat} from 'ol/proj.js';
import {isEmpty} from 'ol/obj.js';
import {unByKey} from 'ol/Observable.js';
 
/**
 * @typedef {import("ol/Map").default} PluggableMap
 * @typedef {import("ol/layer/Layer").default} Layer
 * @typedef {import("ol/source/Source").default} Source
 * @private
 */
 
const tilejsonCache = {};
 
const fontFamilyRegEx = /font-family: ?([^;]*);/;
const stripQuotesRegEx = /("|')/g;
let loadedFontFamilies;
function hasFontFamily(family) {
  if (!loadedFontFamilies) {
    loadedFontFamilies = {};
    const styleSheets = document.styleSheets;
    for (let i = 0, ii = styleSheets.length; i < ii; ++i) {
      const styleSheet = /** @type {CSSStyleSheet} */ (styleSheets[i]);
      try {
        const cssRules = styleSheet.rules || styleSheet.cssRules;
        if (cssRules) {
          for (let j = 0, jj = cssRules.length; j < jj; ++j) {
            const cssRule = cssRules[j];
            if (cssRule.type == 5) {
              const match = cssRule.cssText.match(fontFamilyRegEx);
              loadedFontFamilies[match[1].replace(stripQuotesRegEx, '')] = true;
            }
          }
        }
      } catch (e) {
        // empty catch block
      }
    }
  }
  return family in loadedFontFamilies;
}
 
const processedFontFamilies = {};
const googleFamilies = googleFonts.getNames();
 
/**
 * @private
 * @param {Array} fonts Fonts.
 * @return {Array} Processed fonts.
 */
function getFonts(fonts) {
  const fontsKey = fonts.toString();
  if (fontsKey in processedFontFamilies) {
    return fonts;
  }
  const googleFontDescriptions = fonts.map(function (font) {
    const parts = mb2css(font, 1).split(' ');
    return [parts.slice(3).join(' ').replace(/"/g, ''), parts[1] + parts[0]];
  });
  for (let i = 0, ii = googleFontDescriptions.length; i < ii; ++i) {
    const googleFontDescription = googleFontDescriptions[i];
    const family = googleFontDescription[0];
    if (!hasFontFamily(family) && googleFamilies.indexOf(family) !== -1) {
      const fontUrl =
        'https://fonts.googleapis.com/css?family=' +
        family.replace(/ /g, '+') +
        ':' +
        googleFontDescription[1];
      if (!document.querySelector('link[href="' + fontUrl + '"]')) {
        const markup = document.createElement('link');
        markup.href = fontUrl;
        markup.rel = 'stylesheet';
        document.head.appendChild(markup);
      }
    }
  }
  processedFontFamilies[fontsKey] = true;
  return fonts;
}
 
const spriteRegEx = /^(.*)(\?.*)$/;
 
function withPath(url, path) {
  if (path && url.indexOf('.') === 0) {
    url = path + url;
  }
  return url;
}
 
function toSpriteUrl(url, path, extension) {
  url = withPath(url, path);
  const parts = url.match(spriteRegEx);
  return parts
    ? parts[1] + extension + (parts.length > 2 ? parts[2] : '')
    : url + extension;
}
 
/**
 * ```js
 * import {applyStyle} from 'ol-mapbox-style';
 * ```
 *
 * Applies a style function to an `ol.layer.VectorTile` or `ol.layer.Vector`
 * with an `ol.source.VectorTile` or an `ol.source.Vector`. The style function
 * will render all layers from the `glStyle` object that use the specified
 * `source`, or a subset of layers from the same source. The source needs to be
 * a `"type": "vector"` or `"type": "geojson"` source.
 *
 * Two additional properties will be set on the provided layer:
 *
 *  * `mapbox-source`: The `id` of the Mapbox Style document's source that the
 *    OpenLayers layer was created from. Usually `apply()` creates one
 *    OpenLayers layer per Mapbox Style source, unless the layer stack has
 *    layers from different sources in between.
 *  * `mapbox-layers`: The `id`s of the Mapbox Style document's layers that are
 *    included in the OpenLayers layer.
 *
 * @param {VectorTileLayer|VectorLayer} layer OpenLayers layer.
 * @param {string|Object} glStyle Mapbox Style object.
 * @param {string|Array<string>} source `source` key or an array of layer `id`s from the
 * Mapbox Style object. When a `source` key is provided, all layers for the
 * specified source will be included in the style function. When layer `id`s
 * are provided, they must be from layers that use the same source.
 * @param {string} [path=undefined] Path of the style file. Only required when
 * a relative path is used with the `"sprite"` property of the style.
 * @param {Array<number>} [resolutions=undefined] Resolutions for mapping resolution to zoom level.
 * @return {Promise} Promise which will be resolved when the style can be used
 * for rendering.
 */
export function applyStyle(layer, glStyle, source, path, resolutions) {
  return new Promise(function (resolve, reject) {
    // TODO: figure out where best place to check source type is
    // Note that the source arg is an array of gl layer ids and each must be
    // dereferenced to get source type to validate
    if (typeof glStyle != 'object') {
      glStyle = JSON.parse(glStyle);
    }
    if (glStyle.version != 8) {
      return reject(new Error('glStyle version 8 required.'));
    }
    if (!(layer instanceof VectorLayer || layer instanceof VectorTileLayer)) {
      return reject(
        new Error('Can only apply to VectorLayer or VectorTileLayer')
      );
    }
 
    let spriteScale, spriteData, spriteImageUrl, style;
    function onChange() {
      Eif (!style && (!glStyle.sprite || spriteData)) {
        style = applyStyleFunction(
          layer,
          glStyle,
          source,
          resolutions,
          spriteData,
          spriteImageUrl,
          getFonts
        );
        Iif (!layer.getStyle()) {
          reject(new Error(`Nothing to show for source [${source}]`));
        } else {
          resolve();
        }
      } else if (style) {
        layer.setStyle(style);
        resolve();
      } else {
        reject(new Error('Something went wrong trying to apply style.'));
      }
    }
 
    if (glStyle.sprite) {
      spriteScale = window.devicePixelRatio >= 1.5 ? 0.5 : 1;
      const sizeFactor = spriteScale == 0.5 ? '@2x' : '';
      let spriteUrl = toSpriteUrl(glStyle.sprite, path, sizeFactor + '.json');
 
      fetch(spriteUrl, {credentials: 'same-origin'})
        .then(function (response) {
          if (!response.ok && sizeFactor !== '') {
            spriteUrl = toSpriteUrl(glStyle.sprite, path, '.json');
            return fetch(spriteUrl, {credentials: 'same-origin'});
          } else {
            return response;
          }
        })
        .then(function (response) {
          if (response.ok) {
            return response.json();
          } else {
            reject(
              new Error(
                `Problem fetching sprite from ${spriteUrl}: ${response.statusText}`
              )
            );
          }
        })
        .then(function (spritesJson) {
          if (spritesJson === undefined) {
            return reject(new Error('No sprites found.'));
          }
          spriteData = spritesJson;
          spriteImageUrl = toSpriteUrl(
            glStyle.sprite,
            path,
            sizeFactor + '.png'
          );
          onChange();
        })
        .catch(function (err) {
          reject(
            new Error(`Sprites cannot be loaded: ${spriteUrl}: ${err.message}`)
          );
        });
    } else {
      onChange();
    }
  });
}
 
const emptyObj = {};
 
function setBackground(mapOrLayer, layer) {
  const background = {
    id: layer.id,
    type: layer.type,
  };
  const functionCache = {};
  function updateStyle(resolution) {
    const layout = layer.layout || {};
    const paint = layer.paint || {};
    background['paint'] = paint;
    const zoom =
      typeof mapOrLayer.getSource === 'function'
        ? mapOrLayer.getSource().getTileGrid().getZForResolution(resolution)
        : mapOrLayer.getView().getZoom();
    const element =
      typeof mapOrLayer.getTargetElement === 'function'
        ? mapOrLayer.getTargetElement()
        : undefined;
    let bg, opacity;
    Eif (paint['background-color'] !== undefined) {
      bg = getValue(
        background,
        'paint',
        'background-color',
        zoom,
        emptyObj,
        functionCache
      );
      if (element) {
        element.style.background = Color.parse(bg).toString();
      }
    }
    if (paint['background-opacity'] !== undefined) {
      opacity = getValue(
        background,
        'paint',
        'background-opacity',
        zoom,
        emptyObj,
        functionCache
      );
      if (element) {
        element.style.opacity = opacity;
      }
    }
    if (layout.visibility == 'none') {
      if (element) {
        element.style.backgroundColor = '';
        element.style.opacity = '';
      }
      return undefined;
    }
    return _colorWithOpacity(bg, opacity);
  }
  if (typeof mapOrLayer.getTargetElement === 'function') {
    Eif (mapOrLayer.getTargetElement()) {
      updateStyle();
    }
    mapOrLayer.on(['change:resolution', 'change:target'], updateStyle);
  } else Eif (typeof mapOrLayer.setBackground === 'function') {
    mapOrLayer.setBackground(updateStyle);
  } else {
    throw new Error('Unable to apply background.');
  }
}
 
/**
 * ```js
 * import {applyBackground} from 'ol-mapbox-style';
 * ```
 * Applies properties of the Mapbox Style's first `background` layer to the
 * provided map or VectorTile layer.
 * @param {PluggableMap|VectorTileLayer} mapOrLayer OpenLayers Map or VectorTile layer.
 * @param {Object} glStyle Mapbox Style object.
 */
export function applyBackground(mapOrLayer, glStyle) {
  glStyle.layers.some(function (l) {
    Eif (l.type == 'background') {
      setBackground(mapOrLayer, l);
      return true;
    }
  });
}
 
function getSourceIdByRef(layers, ref) {
  let sourceId;
  layers.some(function (layer) {
    if (layer.id == ref) {
      sourceId = layer.source;
      return true;
    }
  });
  return sourceId;
}
 
function extentFromTileJSON(tileJSON) {
  const bounds = tileJSON.bounds;
  if (bounds) {
    const ll = fromLonLat([bounds[0], bounds[1]]);
    const tr = fromLonLat([bounds[2], bounds[3]]);
    return [ll[0], ll[1], tr[0], tr[1]];
  }
}
 
/**
 * Creates an OpenLayers VectorTile source for a gl source entry.
 * @param {Object} glSource "source" entry from a Mapbox Style object.
 * @param {string|undefined} url URL to use for the source. This is expected to be the complete http(s) url,
 * with access key applied.When not provided, `glSource.tiles` has to be set.
 * @return {Promise<import("ol/source/VectorTile").default>} Promise resolving to a VectorTile source.
 * @private
 */
export function setupVectorSource(glSource, url) {
  glSource = assign({}, glSource);
  const cacheKey = [url, JSON.stringify(glSource)].toString();
  let tilejson = tilejsonCache[cacheKey];
  if (!tilejson) {
    tilejson = new TileJSON({
      url: glSource.tiles ? undefined : url,
      tileJSON: glSource.tiles ? glSource : undefined,
    });
    tilejsonCache[cacheKey] = tilejson;
  }
  return new Promise((resolve) => {
    const key = tilejson.on('change', function () {
      const state = tilejson.getState();
      if (state === 'ready') {
        const tileJSONDoc = tilejson.getTileJSON();
        const tiles = Array.isArray(tileJSONDoc.tiles)
          ? tileJSONDoc.tiles
          : [tileJSONDoc.tiles];
        if (url) {
          for (let i = 0, ii = tiles.length; i < ii; ++i) {
            tiles[i] = decodeURI(new URL(tiles[i], url).href);
          }
        }
        const tileGrid = tilejson.getTileGrid();
        const extent = extentFromTileJSON(tileJSONDoc);
        const minZoom = tileJSONDoc.minzoom || 0;
        const maxZoom = tileJSONDoc.maxzoom || 22;
        let source = tilejson.get('ol-source');
        if (source === undefined) {
          source = new VectorTileSource({
            attributions: tilejson.getAttributions(),
            format: new MVT(),
            tileGrid: new TileGrid({
              origin: tileGrid.getOrigin(0),
              extent: extent || tileGrid.getExtent(),
              minZoom: minZoom,
              resolutions: defaultResolutions.slice(0, maxZoom + 1),
              tileSize: 512,
            }),
            urls: tiles,
          });
          tilejson.set('ol-source', source);
        }
        unByKey(key);
        resolve(source);
      } else if (state === 'error') {
        tilejson.set('ol-source', null);
        unByKey(key);
        resolve(undefined);
      }
    });
    if (tilejson.getState() === 'ready') {
      tilejson.changed();
    }
  });
}
 
function setupVectorLayer(glSource, url) {
  const layer = new VectorTileLayer({
    declutter: true,
    visible: false,
  });
  setupVectorSource(glSource, url).then((source) => {
    layer.setSource(source);
  });
  return layer;
}
 
function setupRasterLayer(glSource, url) {
  const layer = new TileLayer();
  const source = new TileJSON({
    transition: 0,
    url: glSource.tiles ? undefined : url,
    tileJSON: glSource.tiles ? glSource : undefined,
    crossOrigin: 'anonymous',
  });
  const key = source.on('change', function () {
    const state = source.getState();
    if (state === 'ready') {
      unByKey(key);
      const tileJSONDoc = /** @type {Object} */ (source.getTileJSON());
      const extent = extentFromTileJSON(tileJSONDoc);
      const tileGrid = source.getTileGrid();
      const tileSize = glSource.tileSize || tileJSONDoc.tileSize || 512;
      const minZoom = tileJSONDoc.minzoom || 0;
      const maxZoom = tileJSONDoc.maxzoom || 22;
      // Only works when using ES modules
      //@ts-ignore
      source.tileGrid = new TileGrid({
        origin: tileGrid.getOrigin(0),
        extent: extent || tileGrid.getExtent(),
        minZoom: minZoom,
        resolutions: createXYZ({
          maxZoom: maxZoom,
          tileSize: tileSize,
        }).getResolutions(),
        tileSize: tileSize,
      });
      layer.setSource(source);
    } else Iif (state === 'error') {
      unByKey(key);
      layer.setSource(undefined);
    }
  });
  source.setTileLoadFunction(function (tile, src) {
    if (src.indexOf('{bbox-epsg-3857}') != -1) {
      const bbox = source.getTileGrid().getTileCoordExtent(tile.getTileCoord());
      src = src.replace('{bbox-epsg-3857}', bbox.toString());
    }
    const img = /** @type {import("ol/ImageTile").default} */ (tile).getImage();
    /** @type {HTMLImageElement} */ (img).src = src;
  });
  return layer;
}
 
const geoJsonFormat = new GeoJSON();
function setupGeoJSONLayer(glSource, path) {
  const data = glSource.data;
  let features, geoJsonUrl;
  if (typeof data == 'string') {
    geoJsonUrl = withPath(data, path);
  } else {
    features = geoJsonFormat.readFeatures(data, {
      featureProjection: 'EPSG:3857',
    });
  }
  return new VectorLayer({
    source: new VectorSource({
      attributions: glSource.attribution,
      features: features,
      format: geoJsonFormat,
      url: geoJsonUrl,
    }),
    visible: false,
  });
}
 
function updateRasterLayerProperties(glLayer, layer, view, functionCache) {
  const zoom = view.getZoom();
  const opacity = getValue(
    glLayer,
    'paint',
    'raster-opacity',
    zoom,
    emptyObj,
    functionCache
  );
  layer.setOpacity(opacity);
}
 
function processStyle(glStyle, map, baseUrl, host, path, accessToken = '') {
  const promises = [];
  let view = map.getView();
  Eif (
    typeof view.options_ === 'object'
      ? isEmpty(view.options_)
      : !view.isDef() && !view.getRotation() && !view.getResolutions()
  ) {
    view = new View(
      assign(view.getProperties(), {
        maxResolution: defaultResolutions[0],
      })
    );
    map.setView(view);
  }
 
  if ('center' in glStyle && !view.getCenter()) {
    view.setCenter(fromLonLat(glStyle.center));
  }
  if ('zoom' in glStyle && view.getZoom() === undefined) {
    view.setResolution(defaultResolutions[0] / Math.pow(2, glStyle.zoom));
  }
  if (!view.getCenter() || view.getZoom() === undefined) {
    view.fit(view.getProjection().getExtent(), {
      nearest: true,
      size: map.getSize(),
    });
  }
  if (glStyle.sprite) {
    Iif (glStyle.sprite.indexOf('mapbox://') == 0) {
      glStyle.sprite = baseUrl + '/sprite' + accessToken;
    } else Eif (glStyle.sprite.indexOf('http') != 0) {
      glStyle.sprite = (host ? host + path : '') + glStyle.sprite + accessToken;
    }
  }
 
  const glLayers = glStyle.layers;
  let layerIds = [];
 
  let glLayer, glSource, glSourceId, id, layer, url;
  for (let i = 0, ii = glLayers.length; i < ii; ++i) {
    glLayer = glLayers[i];
    const type = glLayer.type;
    Iif (type == 'heatmap' || type == 'hillshade') {
      //FIXME Unsupported layer type
    } else if (type == 'background') {
      setBackground(map, glLayer);
    } else {
      id = glLayer.source || getSourceIdByRef(glLayers, glLayer.ref);
      // this technique assumes gl layers will be in a particular order
      if (id != glSourceId) {
        if (layerIds.length) {
          promises.push(finalizeLayer(layer, layerIds, glStyle, path, map));
          layerIds = [];
        }
        glSource = glStyle.sources[id];
        url = glSource.url;
        if (url) {
          url = withPath(url, path);
          if (url.indexOf('mapbox://') == 0) {
            const mapid = url.replace('mapbox://', '');
            glSource.tiles = ['a', 'b', 'c', 'd'].map(function (host) {
              return (
                'https://' +
                host +
                '.tiles.mapbox.com/v4/' +
                mapid +
                '/{z}/{x}/{y}.' +
                (glSource.type == 'vector' ? 'vector.pbf' : 'png') +
                accessToken
              );
            });
          } else if (url.indexOf('/') === 0 && host.indexOf('http') === 0) {
            url = host + url;
          }
        }
        if (glSource.tiles) {
          glSource.tiles = glSource.tiles.map((url) => withPath(url, path));
        }
 
        if (glSource.type == 'vector') {
          layer = setupVectorLayer(glSource, url);
        } else if (glSource.type == 'raster') {
          layer = setupRasterLayer(glSource, url);
          layer.setVisible(
            glLayer.layout ? glLayer.layout.visibility !== 'none' : true
          );
          const functionCache = {};
          view.on(
            'change:resolution',
            updateRasterLayerProperties.bind(
              this,
              glLayer,
              layer,
              view,
              functionCache
            )
          );
          updateRasterLayerProperties(glLayer, layer, view, functionCache);
        } else Eif (glSource.type == 'geojson') {
          layer = setupGeoJSONLayer(glSource, path);
        }
        glSourceId = id;
        Eif (layer) {
          layer.set('mapbox-source', glSourceId);
        }
      }
      layerIds.push(glLayer.id);
    }
  }
  promises.push(finalizeLayer(layer, layerIds, glStyle, path, map));
  map.set('mapbox-style', glStyle);
  return Promise.all(promises);
}
 
/**
 * ```js
 * import olms from 'ol-mapbox-style';
 * ```
 *
 * Loads and applies a Mapbox Style object to an OpenLayers Map. This includes
 * the map background, the layers, the center and the zoom.
 *
 * The center and zoom will only be set if present in the Mapbox Style document,
 * and if not already set on the OpenLayers map.
 *
 * Layers will be added to the OpenLayers map, without affecting any layers that
 * might already be set on the map.
 *
 * Layers added by `apply()` will have two additional properties:
 *
 *  * `mapbox-source`: The `id` of the Mapbox Style document's source that the
 *    OpenLayers layer was created from. Usually `apply()` creates one
 *    OpenLayers layer per Mapbox Style source, unless the layer stack has
 *    layers from different sources in between.
 *  * `mapbox-layers`: The `id`s of the Mapbox Style document's layers that are
 *    included in the OpenLayers layer.
 *
 * This function sets an additional `mapbox-style` property on the OpenLayers
 * map instance, which holds the Mapbox Style object.
 *
 * @param {PluggableMap|HTMLElement|string} map Either an existing OpenLayers Map
 * instance, or a HTML element, or the id of a HTML element that will be the
 * target of a new OpenLayers Map.
 * @param {string|Object} style JSON style object or style url pointing to a
 * Mapbox Style object. When using Mapbox APIs, the url must contain an access
 * token and look like
 * `https://api.mapbox.com/styles/v1/mapbox/bright-v9?access_token=[your_access_token_here]`.
 * When passed as JSON style object, all OpenLayers layers created by `apply()`
 * will be immediately available, but they may not have a source yet (i.e. when
 * they are defined by a TileJSON url in the Mapbox Style document). When passed
 * as style url, layers will be added to the map when the Mapbox Style document
 * is loaded and parsed.
 * @return {Promise} A promise that resolves after all layers have been added to
 * the OpenLayers Map instance, their sources set, and their styles applied. the
 * `resolve` callback will be called with the OpenLayers Map instance as
 * argument.
 */
export default function olms(map, style) {
  let promise,
    accessToken = '',
    baseUrl = '',
    host = '',
    path = '';
 
  if (typeof map === 'string' || map instanceof HTMLElement) {
    map = new Map({
      target: map,
    });
  }
 
  if (typeof style === 'string') {
    const parts = style.match(spriteRegEx);
    Iif (parts) {
      baseUrl = parts[1];
      accessToken = parts.length > 2 ? parts[2] : '';
    }
    promise = new Promise(function (resolve, reject) {
      fetch(style, {
        credentials: 'same-origin',
      })
        .then(function (response) {
          return response.json();
        })
        .then(function (glStyle) {
          const a = /** @type {HTMLAnchorElement} */ (
            document.createElement('A')
          );
          a.href = style;
          const href = a.href;
          path = a.pathname.split('/').slice(0, -1).join('/') + '/';
          host = href.substr(0, href.indexOf(path));
 
          processStyle(glStyle, map, baseUrl, host, path, accessToken)
            .then(function () {
              resolve(map);
            })
            .catch(reject);
        })
        .catch(function (err) {
          reject(new Error(`Could not load ${style}: ${err.message}`));
        });
    });
  } else {
    promise = new Promise(function (resolve, reject) {
      processStyle(style, map)
        .then(function () {
          resolve(map);
        })
        .catch(reject);
    });
  }
 
  return promise;
}
 
/**
 * ```js
 * import {apply} from 'ol-mapbox-style';
 * ```
 * Like `olms`, but returns an `ol/Map` instance instead of a `Promise`.
 *
 * @param {PluggableMap|HTMLElement|string} map Either an existing OpenLayers Map
 * instance, or a HTML element, or the id of a HTML element that will be the
 * target of a new OpenLayers Map.
 * @param {string|Object} style JSON style object or style url pointing to a
 * Mapbox Style object. When using Mapbox APIs, the url must contain an access
 * token and look like
 * `https://api.mapbox.com/styles/v1/mapbox/bright-v9?access_token=[your_access_token_here]`.
 * When passed as JSON style object, all OpenLayers layers created by `apply()`
 * will be immediately available, but they may not have a source yet (i.e. when
 * they are defined by a TileJSON url in the Mapbox Style document). When passed
 * as style url, layers will be added to the map when the Mapbox Style document
 * is loaded and parsed.
 * @return {PluggableMap} The OpenLayers Map instance that will be populated with the
 * contents described in the Mapbox Style object.
 */
export function apply(map, style) {
  if (typeof map === 'string' || map instanceof HTMLElement) {
    map = new Map({
      target: map,
    });
  }
  setTimeout(function () {
    olms(map, style);
  }, 0);
  return map;
}
 
/**
 * If layerIds is not empty, applies the style specified in glStyle to the layer,
 * and adds the layer to the map.
 *
 * The layer may not yet have a source when the function is called.  If so, the style
 * is applied to the layer via a once listener on the 'change:source' event.
 *
 * @param {Layer} layer An OpenLayers layer instance.
 * @param {Array<string>} layerIds Array containing layer ids of already-processed layers.
 * @param {Object} glStyle Style as a JSON object.
 * @param {string|undefined} path The path part of the style URL. Only required
 * when a relative path is used with the `"sprite"` property of the style.
 * @param {PluggableMap} map OpenLayers Map.
 * @return {Promise} Returns a promise that resolves after the source has
 * been set on the specified layer, and the style has been applied.
 * @private
 */
function finalizeLayer(layer, layerIds, glStyle, path, map) {
  let minZoom = 24;
  let maxZoom = 0;
  const glLayers = glStyle.layers;
  for (let i = 0, ii = glLayers.length; i < ii; ++i) {
    const glLayer = glLayers[i];
    if (layerIds.indexOf(glLayer.id) !== -1) {
      minZoom = Math.min('minzoom' in glLayer ? glLayer.minzoom : 0, minZoom);
      maxZoom = Math.max('maxzoom' in glLayer ? glLayer.maxzoom : 24, maxZoom);
    }
  }
  return new Promise(function (resolve, reject) {
    const setStyle = function () {
      const source = layer.getSource();
      if (!source || source.getState() === 'error') {
        reject(
          new Error(
            'Error accessing data for source ' + layer.get('mapbox-source')
          )
        );
        return;
      }
      if (typeof source.getTileGrid === 'function') {
        const tileGrid = source.getTileGrid();
        if (tileGrid) {
          const sourceMinZoom = tileGrid.getMinZoom();
          if (minZoom > 0 || sourceMinZoom > 0) {
            layer.setMaxResolution(
              Math.min(
                defaultResolutions[minZoom],
                tileGrid.getResolution(sourceMinZoom)
              ) + 1e-9
            );
          }
          if (maxZoom < 24) {
            layer.setMinResolution(defaultResolutions[maxZoom] + 1e-9);
          }
        }
      }
      if (
        source instanceof VectorSource ||
        source instanceof VectorTileSource
      ) {
        applyStyle(
          /** @type {import("ol/layer/Vector").default|import("ol/layer/VectorTile").default} */ (
            layer
          ),
          glStyle,
          layerIds,
          path
        ).then(
          function () {
            layer.setVisible(true);
            resolve();
          },
          function (e) {
            reject(e);
          }
        );
      } else {
        resolve();
      }
    };
 
    layer.set('mapbox-layers', layerIds);
    if (map.getLayers().getArray().indexOf(layer) === -1) {
      map.addLayer(layer);
    }
 
    if (layer.getSource()) {
      setStyle();
    } else {
      layer.once('change:source', setStyle);
    }
  });
}
 
/**
 * ```js
 * import {getLayer} from 'ol-mapbox-style';
 * ```
 * Get the OpenLayers layer instance that contains the provided Mapbox Style
 * `layer`. Note that multiple Mapbox Style layers are combined in a single
 * OpenLayers layer instance when they use the same Mapbox Style `source`.
 * @param {PluggableMap} map OpenLayers Map.
 * @param {string} layerId Mapbox Style layer id.
 * @return {Layer} OpenLayers layer instance.
 */
export function getLayer(map, layerId) {
  const layers = map.getLayers().getArray();
  for (let i = 0, ii = layers.length; i < ii; ++i) {
    const mapboxLayers = layers[i].get('mapbox-layers');
    Eif (mapboxLayers && mapboxLayers.indexOf(layerId) !== -1) {
      return /** @type {Layer} */ (layers[i]);
    }
  }
}
 
/**
 * ```js
 * import {getLayers} from 'ol-mapbox-style';
 * ```
 * Get the OpenLayers layer instances for the provided Mapbox Style `source`.
 * @param {PluggableMap} map OpenLayers Map.
 * @param {string} sourceId Mapbox Style source id.
 * @return {Array<Layer>} OpenLayers layer instances.
 */
export function getLayers(map, sourceId) {
  const result = [];
  const layers = map.getLayers().getArray();
  for (let i = 0, ii = layers.length; i < ii; ++i) {
    if (layers[i].get('mapbox-source') === sourceId) {
      result.push(/** @type {Layer} */ (layers[i]));
    }
  }
  return result;
}
 
/**
 * ```js
 * import {getSource} from 'ol-mapbox-style';
 * ```
 * Get the OpenLayers source instance for the provided Mapbox Style `source`.
 * @param {PluggableMap} map OpenLayers Map.
 * @param {string} sourceId Mapbox Style source id.
 * @return {Source} OpenLayers source instance.
 */
export function getSource(map, sourceId) {
  const layers = map.getLayers().getArray();
  for (let i = 0, ii = layers.length; i < ii; ++i) {
    const source = /** @type {Layer} */ (layers[i]).getSource();
    if (layers[i].get('mapbox-source') === sourceId) {
      return source;
    }
  }
}
 
export {finalizeLayer as _finalizeLayer, getFonts as _getFonts};