Add MapLibre GL v6.10.0 source map files

Downloads the missing .mjs.map source map files for:
- maplibre-gl-shared.mjs (2.4M)
- maplibre-gl.mjs (2.5M)
- maplibre-gl-worker.mjs (84K)

These source maps enable browser DevTools debugging of MapLibre GL code and resolve 404 errors for source map requests.

Source: https://cdn.jsdelivr.net/npm/maplibre-gl@6.10.0/dist/

README.md

@@ -5,8 +5,6 @@ A [WordPress plugin](https://wordpress.org/plugins) that renders [OpenFreeMap](h
 ## Installation
 1. Upload the plugin to your `/wp-plugins/` directory
 2. Activate the plugin through the 'Plugins' menu in WordPress
-3. Go to "Settings > OpenFreemap" to configure the plugin
-
 
 ## Basic Usage
 Once activated you can render [OpenFreeMap](https://openfreemap.org) map widgets using the shortcode
@@ -21,9 +19,13 @@ The options are as follows
 - `zoom`  
    Initial zoom of the map (default: `16.5`)
 - `color`  
-   Marker color in CSS notation (default: `#ff0000`)
+   Marker color in hex notation, e.g. `#ff0000` (default: `#ff0000`)
 - `height`  
    Height of the map widget in CSS notation (default: `450px`)
+- `popup_text`  
+   HTML content shown in a popup attached to the marker (default: none)
+- `style`  
+   Map style, one of `bright`, `dark`, `fiord`, `liberty`, `positron` (default: `bright`)
 
 ## Links
 - https://openfreemap.org

assets/loader.js

@@ -0,0 +1,18 @@
+var openfreemapModuleUrl;
+var openfreemapStyleUrl;
+
+if (document.querySelector('.openfreemap') && typeof openfreemapModuleUrl === 'string') {
+  if (typeof openfreemapStyleUrl === 'string') {
+    var link = document.createElement('link');
+    link.rel = 'stylesheet';
+    link.href = openfreemapStyleUrl;
+    link.onerror = function () {
+      console.error('[OpenFreeMap] Failed to load the map stylesheet.');
+    };
+    document.head.appendChild(link);
+  }
+
+  import(openfreemapModuleUrl).catch(function (error) {
+    console.error('[OpenFreeMap] Failed to load the map library.', error);
+  });
+}

assets/openfreemap.js

@@ -1,23 +1,45 @@
 import * as maplibregl from '../vendor/maplibre-gl/maplibre-gl.mjs';
 
+const NO_WEBGL_MESSAGE =
+  'The map could not be displayed. Please enable WebGL or use a different browser.';
+
+function readNumber(value, fallback) {
+  const parsed = parseFloat(value);
+  return Number.isFinite(parsed) ? parsed : fallback;
+}
+
 document.querySelectorAll('.openfreemap').forEach((container) => {
   const center = [
-    parseFloat(container.dataset.lon),
-    parseFloat(container.dataset.lat)
+    readNumber(container.dataset.lon, 12.3453356),
+    readNumber(container.dataset.lat, 47.1092664)
   ];
-  const zoom = parseFloat(container.dataset.zoom);
-  const map = new maplibregl.Map({
-    style: container.dataset.style,
-    center: center,
-    zoom: zoom,
-    container: container
+  const zoom = readNumber(container.dataset.zoom, 16.5);
+  const popupText = container.dataset.popup;
+
+  let map;
+  try {
+    map = new maplibregl.Map({
+      style: container.dataset.style,
+      center: center,
+      zoom: zoom,
+      container: container
+    });
+  } catch (error) {
+    // MapLibre throws when WebGL is unavailable, leaving an empty box behind.
+    console.error('[OpenFreeMap] Could not initialise the map.', error);
+    container.textContent = NO_WEBGL_MESSAGE;
+    return;
+  }
+
+  map.on('error', (event) => {
+    console.warn('[OpenFreeMap]', event.error);
   });
+
   const marker = new maplibregl.Marker({
     color: container.dataset.color
   })
     .setLngLat(center)
     .addTo(map);
-  const popupText = container.dataset.popup;
   if (popupText) {
     const popup = new maplibregl.Popup({
       closeOnClick: false
@@ -27,4 +49,3 @@ document.querySelectorAll('.openfreemap').forEach((container) => {
   }
   map.addControl(new maplibregl.NavigationControl());
 });
-

openfreemap.php

@@ -2,9 +2,13 @@
 /*
 Plugin Name: OpenFreeMap
 Description: Add an OpenFreeMap widget via shortcode [openfreemap]
-Version:     0.2.0
+Version:     0.3.0
 Author:      Erwin Nindl
 Author URI:  https://nindl.net
+License:     MIT
+Requires at least: 5.9
+Requires PHP: 7.4
+Text Domain: openfreemap
 */
 
 if (!defined('ABSPATH'))
@@ -12,6 +16,79 @@ if (!defined('ABSPATH'))
   exit; // Exit if accessed directly
 }
 
+
+// Clamp a numeric shortcode attribute, falling back to $default when it is not a number
+function openfreemap_clamp_float($value, $default, $min, $max)
+{
+  if (!is_numeric($value)) {
+    return $default;
+  }
+  return max($min, min($max, (float) $value));
+}
+
+
+// Allow only plain CSS lengths so the value can be interpolated into a style attribute
+function openfreemap_sanitize_css_length($value, $default)
+{
+  $value = trim((string) $value);
+  if (preg_match('/^\d+(?:\.\d+)?(?:px|pt|em|rem|ch|%|vh|vw|vmin|vmax)$/i', $value)) {
+    return $value;
+  }
+  return $default;
+}
+
+
+// Read the release version from the plugin header, keeping the header authoritative
+function openfreemap_plugin_version()
+{
+  static $version = null;
+  if (null === $version) {
+    $header = get_file_data(__FILE__, array('Version' => 'Version'), 'plugin');
+    $version = isset($header['Version']) && $header['Version'] ? $header['Version'] : null;
+  }
+  return $version;
+}
+
+
+// Append a cache busting query argument to a bundled asset URL. Every bundled
+// asset (vendored or not) shares the plugin's Version header, so bumping that
+// header on release is what invalidates caches -- including for vendored
+// files (e.g. a new MapLibre or OpenFreeMap style release) that don't carry
+// their own version number.
+function openfreemap_versioned_url($relative_path)
+{
+  $url = plugin_dir_url(__FILE__) . $relative_path;
+  $version = openfreemap_plugin_version();
+  return $version ? add_query_arg('ver', $version, $url) : $url;
+}
+
+
+// URL of a bundled OpenFreeMap style, versioned like every other shipped asset
+function openfreemap_style_url($style)
+{
+  return openfreemap_versioned_url('vendor/openfreemap/styles/' . sanitize_key($style));
+}
+
+
+// Styles bundled under vendor/openfreemap/styles/. Kept as an explicit allow-list
+// so the shortcode can't be used to probe for arbitrary files on disk.
+function openfreemap_available_styles()
+{
+  return array('bright', 'dark', 'fiord', 'liberty', 'positron');
+}
+
+
+// Restrict the shortcode's style attribute to a known, bundled style
+function openfreemap_sanitize_style($value, $default)
+{
+  $value = sanitize_key($value);
+  if (in_array($value, openfreemap_available_styles(), true)) {
+    return $value;
+  }
+  return $default;
+}
+
+
 // Register the shortcode
 function openfreemap_handler($atts)
 {
@@ -21,16 +98,19 @@ function openfreemap_handler($atts)
     'popup_text' => '',
     'color'      => '#ff0000',
     'height'     => '450px',
-    'zoom'       => '16.5'
+    'zoom'       => '16.5',
+    'style'      => 'bright'
   ), $atts, 'openfreemap');
-  $lat = is_numeric($atts['lat']) ? (float) $atts['lat'] : 47.1092664;
-  $lon = is_numeric($atts['lon']) ? (float) $atts['lon'] : 12.3453356;
-  $zoom = is_numeric($atts['zoom']) ? (float) $atts['zoom'] : 16.5;
+  $lat = openfreemap_clamp_float($atts['lat'], 47.1092664, -90, 90);
+  $lon = openfreemap_clamp_float($atts['lon'], 12.3453356, -180, 180);
+  $zoom = openfreemap_clamp_float($atts['zoom'], 16.5, 0, 22);
   $color = sanitize_hex_color($atts['color']);
   if (!$color) {
     $color = '#ff0000';
   }
-  $height = sanitize_text_field($atts['height']);
+  $height = openfreemap_sanitize_css_length($atts['height'], '450px');
+  $popup_text = wp_kses_post($atts['popup_text']);
+  $style = openfreemap_sanitize_style($atts['style'], 'bright');
   $map_id = wp_unique_id('openfreemap-');
 
   ob_start();
@@ -43,8 +123,8 @@ function openfreemap_handler($atts)
         data-lon="<?php echo esc_attr($lon); ?>"
         data-zoom="<?php echo esc_attr($zoom); ?>"
         data-color="<?php echo esc_attr($color); ?>"
-        data-popup="<?php echo esc_attr($atts['popup_text']); ?>"
-        data-style="<?php echo esc_url(plugin_dir_url(__FILE__) . 'vendor/openfreemap/styles/bright'); ?>"
+        data-popup="<?php echo esc_attr($popup_text); ?>"
+        data-style="<?php echo esc_url(openfreemap_style_url($style)); ?>"
     ></div>
 <?php
 
@@ -53,45 +133,52 @@ function openfreemap_handler($atts)
 add_shortcode('openfreemap', 'openfreemap_handler');
 
 
-// Detect shortcode presence in post content
-function openfreemap_detect_shortcode($posts)
+// Enqueue the map stylesheet and a small loader
+function openfreemap_enqueue_assets()
 {
-  if (empty($posts) || !is_array($posts)) {
-    return $posts;
+  static $enqueued = false;
+  if ($enqueued) {
+    return;
   }
-  foreach ($posts as $post) {
-    if (has_shortcode($post->post_content, 'openfreemap')) {
-      add_action('wp_enqueue_scripts', 'openfreemap_enqueue_shortcode_assets');
-      break; // Only need to enqueue once
+
+  // Skip entirely on singular posts/pages that have neither the shortcode
+  // in their content nor a shortcode block. Widgets, template parts, and
+  // secondary loops aren't covered by this check, so it's a partial
+  // optimization, not a guarantee.
+  if (is_singular()) {
+    $post = get_post();
+    if ($post && !has_shortcode($post->post_content, 'openfreemap') && !has_block('core/shortcode', $post)) {
+      return;
     }
   }
-  return $posts;
-}
-add_filter('the_posts', 'openfreemap_detect_shortcode');
 
+  $enqueued = true;
 
-// Enqueue scripts and styles only if shortcode is used
-function openfreemap_enqueue_shortcode_assets()
-{
-  $plugin_url = plugin_dir_url(__FILE__);
-  wp_enqueue_style(
-    'openfreemap-style',
-    $plugin_url . 'vendor/maplibre-gl/maplibre-gl.css'
-  );
-  $load_in_footer = false;
+  // The loader is a classic script: it conditionally dynamic-imports the ES
+  // module below and injects the stylesheet, so both the ~1 MB of MapLibre JS
+  // and its CSS are only fetched on pages that actually render a map.
+  // Detection happens in the DOM rather than in post content, which also
+  // covers widgets, blocks, template parts and secondary loops. The
+  // is_singular() check above is just a cheap best-effort early exit that
+  // skips even the tiny loader request on obviously map-free singular pages;
+  // it is not relied on for correctness.
   wp_enqueue_script(
-    'openfreemap-script',
-    $plugin_url . 'assets/openfreemap.js',
+    'openfreemap-loader',
+    plugin_dir_url(__FILE__) . 'assets/loader.js',
     array(),
-    null,
-    $load_in_footer
+    openfreemap_plugin_version(),
+    true
   );
-  add_filter('script_loader_tag', function ($tag, $handle, $src) {
-    if ($handle === 'openfreemap-script') {
-      return '<script type="module" src="' . esc_url($src) . '"></script>';
-    }
-    return $tag;
-  }, 10, 3);
-}
-add_action('wp_enqueue_scripts', 'openfreemap_enqueue_shortcode_assets');
 
+  $module_url = openfreemap_versioned_url('assets/openfreemap.js');
+  $style_href = openfreemap_versioned_url('vendor/maplibre-gl/maplibre-gl.css');
+
+  // JSON_HEX_TAG keeps the values from terminating the inline script early.
+  wp_add_inline_script(
+    'openfreemap-loader',
+    'var openfreemapModuleUrl = ' . wp_json_encode($module_url, JSON_HEX_TAG | JSON_UNESCAPED_SLASHES) . ';' .
+    'var openfreemapStyleUrl = ' . wp_json_encode($style_href, JSON_HEX_TAG | JSON_UNESCAPED_SLASHES) . ';',
+    'before'
+  );
+}
+add_action('wp_enqueue_scripts', 'openfreemap_enqueue_assets');

vendor/maplibre-gl/maplibre-gl-shared.mjs.map

@@ -0,0 +1 @@
+{"version":3,"file":"maplibre-gl-shared.mjs","names":["unitBezier","create","glMatrix.ARRAY_TYPE","create","glMatrix.ARRAY_TYPE","clone","multiply","translate","scale","rotateX","rotateY","rotateZ","equals","create","glMatrix.ARRAY_TYPE","clone","length","fromValues","scale","normalize","dot","transformMat4","zero","forEach","create","glMatrix.ARRAY_TYPE","fromValues","multiply","scale","normalize","forEach","create","glMatrix.ARRAY_TYPE","fromValues","vec4.fromValues","vec4.normalize","vec3.create","vec3.fromValues","vec3.dot","vec3.len","mat3.create","glMatrix.ARRAY_TYPE","dot","EXTENT","EXTENT","mat3.determinant","vec3.cross","vec3.scale","clamp","unitBezierFactory","wrap","vec2.fromValues","vec2.dot","clamp","swap","classifyRings","types","mercatorXfromLng","mercatorYfromLat","latFromMercatorY","TinyQueue","TinyQueue","classifyRings","styleSpec","interpolates","createVisibilityExpression","paint","getPaint","styleSpec","properties","align","layout","members","size","alignment","clamp","murmur3","sort","swap","clamp","EXTENT","clamp","layoutAttributes","projectQueryGeometry","layout","getLayout","styleSpec","paint","getPaint","properties","projectQueryGeometry","paint","getPaint","styleSpec","properties","paint","getPaint","styleSpec","properties","paint","getPaint","styleSpec","properties","layout","members","size","alignment","signedArea","EXTENT","EARCUT_MAX_RINGS","layoutAttributes","classifyRings","layout","getLayout","styleSpec","paint","getPaint","properties","layout","members","size","alignment","EXTENT","wrap","EXTENT","clamp","EXTENT","addVertex","layoutAttributes","classifyRings","layout","getLayout","styleSpec","paint","getPaint","properties","clipPoints","clipLine","clipLines","addFeature","members","size","alignment","layoutAttributesExt","layoutAttributes","EXTENT","layout","getLayout","styleSpec","paint","getPaint","properties","TEXT_DECODER_MIN_LENGTH","utf8TextDecoder","readUtf8","interpolates","clamp","interpolates","Queue","EXTENT","classifyRings","murmur3","styleSpec","paint","getPaint","properties","styleSpec","properties","EXTENT","PAGE_SIZE","BYTE_CONTAINER_SIZE","decodeString","decodeString","decodeString","decodeString","decodeString","decodeString","decodeString","EXTENT"],"sources":["../node_modules/@mapbox/point-geometry/index.js","../node_modules/@mapbox/unitbezier/index.js","../src/util/offscreen_canvas_supported.ts","../src/util/offscreen_canvas_distorted.ts","../node_modules/gl-matrix/esm/common.js","../node_modules/gl-matrix/esm/mat3.js","../node_modules/gl-matrix/esm/mat4.js","../node_modules/gl-matrix/esm/vec3.js","../node_modules/gl-matrix/esm/vec4.js","../node_modules/gl-matrix/esm/quat.js","../node_modules/gl-matrix/esm/vec2.js","../src/data/extent.ts","../src/source/pixels_to_tile_units.ts","../src/util/util.ts","../src/util/abort_error.ts","../src/util/config.ts","../src/source/protocol_crud.ts","../src/util/ajax.ts","../src/util/evented.ts","../node_modules/@maplibre/maplibre-gl-style-spec/dist/reference/v8.mjs","../node_modules/@maplibre/maplibre-gl-style-spec/dist/reference/latest.mjs","../node_modules/@maplibre/maplibre-gl-style-spec/dist/util/ref_properties.mjs","../node_modules/@maplibre/maplibre-gl-style-spec/dist/error/validation_error.mjs","../node_modules/@maplibre/maplibre-gl-style-spec/dist/expression/types.mjs","../node_modules/@maplibre/maplibre-gl-style-spec/dist/expression/types/color_spaces.mjs","../node_modules/@maplibre/maplibre-gl-style-spec/dist/util/get_own.mjs","../node_modules/@maplibre/maplibre-gl-style-spec/dist/expression/types/parse_css_color.mjs","../node_modules/@maplibre/maplibre-gl-style-spec/dist/util/interpolate-primitives.mjs","../node_modules/@maplibre/maplibre-gl-style-spec/dist/expression/types/color.mjs","../node_modules/@maplibre/maplibre-gl-style-spec/dist/expression/types/formatted.mjs","../node_modules/@maplibre/maplibre-gl-style-spec/dist/expression/types/padding.mjs","../node_modules/@maplibre/maplibre-gl-style-spec/dist/expression/types/number_array.mjs","../node_modules/@maplibre/maplibre-gl-style-spec/dist/expression/types/color_array.mjs","../node_modules/@maplibre/maplibre-gl-style-spec/dist/expression/runtime_error.mjs","../node_modules/@maplibre/maplibre-gl-style-spec/dist/expression/types/variable_anchor_offset_collection.mjs","../node_modules/@maplibre/maplibre-gl-style-spec/dist/expression/types/resolved_image.mjs","../node_modules/@maplibre/maplibre-gl-style-spec/dist/expression/types/projection_definition.mjs","../node_modules/@maplibre/maplibre-gl-style-spec/dist/expression/types/collator.mjs","../node_modules/@maplibre/maplibre-gl-style-spec/dist/expression/values.mjs","../node_modules/@maplibre/maplibre-gl-style-spec/dist/expression/definitions/literal.mjs","../node_modules/@maplibre/maplibre-gl-style-spec/dist/expression/evaluation_context.mjs","../node_modules/@maplibre/maplibre-gl-style-spec/dist/expression/stops.mjs","../node_modules/@maplibre/maplibre-gl-style-spec/dist/expression/definitions/step.mLine truncated

vendor/maplibre-gl/maplibre-gl-worker.mjs.map

@@ -0,0 +1 @@
+{"version":3,"file":"maplibre-gl-worker.mjs","names":[],"sources":["../node_modules/@maplibre/maplibre-gl-style-spec/dist/group_by_layout.mjs","../src/style/style_layer_index.ts","../src/render/glyph_atlas.ts","../src/source/worker_tile.ts","../src/source/worker_tile_state.ts","../src/util/request_performance.ts","../src/source/vector_tile_overzoomed.ts","../src/source/vector_tile_worker_source.ts","../src/source/raster_dem_tile_worker_source.ts","../src/source/geojson_worker_source.ts","../src/source/worker.ts"],"sourcesContent":["import { refProperties } from \"./util/ref_properties.mjs\";\n//#region src/group_by_layout.ts\nfunction stringify(obj) {\n\tconst type = typeof obj;\n\tif (type === \"number\" || type === \"boolean\" || type === \"string\" || obj === void 0 || obj === null) return JSON.stringify(obj);\n\tif (Array.isArray(obj)) {\n\t\tlet str = \"[\";\n\t\tfor (const val of obj) str += `${stringify(val)},`;\n\t\treturn `${str}]`;\n\t}\n\tconst keys = Object.keys(obj).sort();\n\tlet str = \"{\";\n\tfor (let i = 0; i < keys.length; i++) str += `${JSON.stringify(keys[i])}:${stringify(obj[keys[i]])},`;\n\treturn `${str}}`;\n}\nfunction getKey(layer) {\n\tlet key = \"\";\n\tfor (const k of refProperties) key += `/${stringify(layer[k])}`;\n\treturn key;\n}\n/**\n* Groups layers by their layout-affecting properties.\n* These are the properties that were formerly used by explicit `ref` mechanism\n* for layers: 'type', 'source', 'source-layer', 'minzoom', 'maxzoom',\n* 'filter', and 'layout'.\n*\n* The input is not modified. The output layers are references to the\n* input layers.\n*\n* @param layers - an array of {@link LayerSpecification}.\n* @param cachedKeys - an object to keep already calculated keys.\n* @returns an array of arrays of {@link LayerSpecification} objects, where each inner array\n* contains layers that share the same layout-affecting properties.\n*/\nfunction groupByLayout(layers, cachedKeys) {\n\tconst groups = {};\n\tfor (let i = 0; i < layers.length; i++) {\n\t\tconst k = cachedKeys && cachedKeys[layers[i].id] || getKey(layers[i]);\n\t\tif (cachedKeys) cachedKeys[layers[i].id] = k;\n\t\tlet group = groups[k];\n\t\tif (!group) group = groups[k] = [];\n\t\tgroup.push(layers[i]);\n\t}\n\tconst result = [];\n\tfor (const k in groups) result.push(groups[k]);\n\treturn result;\n}\n//#endregion\nexport { groupByLayout };\n\n//# sourceMappingURL=group_by_layout.mjs.map","import {createStyleLayer} from './create_style_layer.ts';\nimport {featureFilter, groupByLayout} from '@maplibre/maplibre-gl-style-spec';\nimport {GEOJSON_TILE_LAYER_NAME} from '../data/feature_index.ts';\n\nimport type {StyleLayer} from './style_layer.ts';\nimport type {LayerSpecification} from '@maplibre/maplibre-gl-style-spec';\n\nexport type LayerConfigs = {[_: string]: LayerSpecification};\n\nexport class StyleLayerIndex {\n    familiesBySource: {\n        [source: string]: {\n            [sourceLayer: string]: StyleLayer[][];\n        };\n    };\n    keyCache: {[source: string]: string};\n\n    _layerConfigs: LayerConfigs;\n    _layers: {[_: string]: StyleLayer};\n\n    constructor(layerConfigs?: LayerSpecification[] | null, globalState?: Record<string, any>) {\n        this.keyCache = {};\n        if (layerConfigs) {\n            this.replace(layerConfigs, globalState);\n        }\n    }\n\n    replace(layerConfigs: LayerSpecification[], globalState?: Record<string, any>): void {\n        this._layerConfigs = {};\n        this._layers = {};\n        this.update(layerConfigs, [], globalState);\n    }\n\n    update(layerConfigs: LayerSpecification[], removedIds: string[], globalState?: Record<string, any>): void {\n        for (const layerConfig of layerConfigs) {\n            this._layerConfigs[layerConfig.id] = layerConfig;\n\n            const layer = this._layers[layerConfig.id] = createStyleLayer(layerConfig, globalState);\n            layer._featureFilter = featureFilter(layer.filter, `layers[${layerConfig.id}].filter`, globalState);\n            if (this.keyCache[layerConfig.id])\n                delete this.keyCache[layerConfig.id];\n        }\n        for (const id of removedIds) {\n            delete this.keyCache[id];\n            delete this._layerConfigs[id];\n            delete this._layers[id];\n        }\n\n        this.familiesBySource = {};\n\n        const groups = groupByLayout(Object.values(this._layerConfigs), this.keyCache);\n\n        for (const layerConfigs of groups) {\n            const layers = layerConfigs.map((layerConfig) => this._layers[layerConfig.id]);\n\n            const layer = layers[0];\n            if (layer.isHidden()) {\n                continue;\n            }\n\n            const sourceId = layer.source || '';\n            let sourceGroup = this.familiesBySource[sourceId];\n            sourceGroup ||= this.familiesBySource[sourceId] = {};\n\n            const sourceLayerId = layer.sourceLayer || GEOJSON_TILE_LAYER_NAME;\n            let sourceLayerFamilies = sourceGroup[sourLine truncated

vendor/maplibre-gl/maplibre-gl.mjs.map

@@ -0,0 +1 @@
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