First commit.

Signed-off-by: Chen Xiao <abigwc@gmail.com>

client/node_modules/cytoscape/src/collection/comparators.mjs

@@ -0,0 +1,97 @@
+import Selector from '../selector/index.mjs';
+
+let elesfn = ({
+  allAre: function( selector ){
+    let selObj = new Selector( selector );
+
+    return this.every(function( ele ){
+      return selObj.matches( ele );
+    });
+  },
+
+  is: function( selector ){
+    let selObj = new Selector( selector );
+
+    return this.some(function( ele ){
+      return selObj.matches( ele );
+    });
+  },
+
+  some: function( fn, thisArg ){
+    for( let i = 0; i < this.length; i++ ){
+      let ret = !thisArg ? fn( this[ i ], i, this ) : fn.apply( thisArg, [ this[ i ], i, this ] );
+
+      if( ret ){
+        return true;
+      }
+    }
+
+    return false;
+  },
+
+  every: function( fn, thisArg ){
+    for( let i = 0; i < this.length; i++ ){
+      let ret = !thisArg ? fn( this[ i ], i, this ) : fn.apply( thisArg, [ this[ i ], i, this ] );
+
+      if( !ret ){
+        return false;
+      }
+    }
+
+    return true;
+  },
+
+  same: function( collection ){
+    // cheap collection ref check
+    if( this === collection ){ return true; }
+
+    collection = this.cy().collection( collection );
+
+    let thisLength = this.length;
+    let collectionLength = collection.length;
+
+    // cheap length check
+    if( thisLength !== collectionLength ){ return false; }
+
+    // cheap element ref check
+    if( thisLength === 1 ){ return this[0] === collection[0]; }
+
+    return this.every(function( ele ){
+      return collection.hasElementWithId( ele.id() );
+    });
+  },
+
+  anySame: function( collection ){
+    collection = this.cy().collection( collection );
+
+    return this.some(function( ele ){
+      return collection.hasElementWithId( ele.id() );
+    });
+  },
+
+  allAreNeighbors: function( collection ){
+    collection = this.cy().collection( collection );
+
+    let nhood = this.neighborhood();
+
+    return collection.every(function( ele ){
+      return nhood.hasElementWithId( ele.id() );
+    });
+  },
+
+  contains: function( collection ){
+    collection = this.cy().collection( collection );
+
+    let self = this;
+
+    return collection.every(function( ele ){
+      return self.hasElementWithId( ele.id() );
+    });
+  }
+});
+
+elesfn.allAreNeighbours = elesfn.allAreNeighbors;
+elesfn.has = elesfn.contains;
+elesfn.equal = elesfn.equals = elesfn.same;
+
+export default elesfn;