Use includes instead of indexOf

src/ol/format/GMLBase.js

@@ -167,7 +167,7 @@ class GMLBase extends XMLFeature {
           const child = /** @type {Element} */ (node.childNodes[i]);
           if (child.nodeType === 1) {
             const ft = child.nodeName.split(':').pop();
-            if (featureType.indexOf(ft) === -1) {
+            if (!featureType.includes(ft)) {
               let key = '';
               let count = 0;
               const uri = child.namespaceURI;
@@ -206,10 +206,9 @@ class GMLBase extends XMLFeature {
         /** @type {Object<string, import("../xml.js").Parser>} */
         const parsers = {};
         for (let i = 0, ii = featureTypes.length; i < ii; ++i) {
-          const featurePrefix =
-            featureTypes[i].indexOf(':') === -1
-              ? defaultPrefix
-              : featureTypes[i].split(':')[0];
+          const featurePrefix = featureTypes[i].includes(':')
+            ? featureTypes[i].split(':')[0]
+            : defaultPrefix;
           if (featurePrefix === p) {
             parsers[featureTypes[i].split(':').pop()] =
               localName == 'featureMembers'

src/ol/format/MVT.js

@@ -262,7 +262,7 @@ class MVT extends FeatureFormat {
     const pbfLayers = pbf.readFields(layersPBFReader, {});
     const features = [];
     for (const name in pbfLayers) {
-      if (layers && layers.indexOf(name) == -1) {
+      if (layers && !layers.includes(name)) {
         continue;
       }
       const pbfLayer = pbfLayers[name];

src/ol/format/TopoJSON.js

@@ -110,7 +110,7 @@ class TopoJSON extends JSONFeature {
       const property = this.layerName_;
       let feature;
       for (const objectName in topoJSONFeatures) {
-        if (this.layers_ && this.layers_.indexOf(objectName) == -1) {
+        if (this.layers_ && !this.layers_.includes(objectName)) {
           continue;
         }
         if (topoJSONFeatures[objectName].type === 'GeometryCollection') {

src/ol/format/WKB.js

@@ -498,10 +498,10 @@ class WkbWriter {
    */
   writeWkbHeader(wkbType, srid) {
     wkbType %= 1000; // Assume 1000 is an upper limit for type ID
-    if (this.layout_.indexOf('Z') >= 0) {
+    if (this.layout_.includes('Z')) {
       wkbType += this.isEWKB_ ? 0x80000000 : 1000;
     }
-    if (this.layout_.indexOf('M') >= 0) {
+    if (this.layout_.includes('M')) {
       wkbType += this.isEWKB_ ? 0x40000000 : 2000;
     }
     if (this.isEWKB_ && Number.isInteger(srid)) {