feat: added install method

Author: Harrison Ifeanyichukwu

src/main.js

@@ -1,30 +1,37 @@
 import Serializer from './modules/Serializer.js';
 
-export default class XMLSerializer {
-    /**
-     *@param {boolean} [preserveWhiteSpace=true] - boolean value indicating if white spaces
-     * should be preserved as it is in the source
-    */
-    constructor(preserveWhiteSpace) {
-        this.serializer = new Serializer(preserveWhiteSpace);
-    }
+export class XMLSerializer {
+  /**
+   *@param {boolean} [preserveWhiteSpace=true] - boolean value indicating if white spaces
+   * should be preserved as it is in the source
+   */
+  constructor(preserveWhiteSpace) {
+    this.serializer = new Serializer(preserveWhiteSpace);
+  }
 
-    /**
-     * return XMLSerializer as modules name
-    */
-    get [Symbol.toStringTag]() {
-        return 'XMLSerializer';
-    }
+  /**
+   * return XMLSerializer as modules name
+   */
+  get [Symbol.toStringTag]() {
+    return 'XMLSerializer';
+  }
 
-    /**
-     * produces an XML serialization of root passing a value of false for the
-     * require well-formed parameter, and return the result.
-     *@param {Node} root - the root node
-     *@param {boolean} [requireWellFormed=false] - boolean value indicating if it should require xml
-     * well formedness
-     *@returns {string}
-    */
-    serializeToString(root, requireWellFormed) {
-        return this.serializer.serializeToString(root, requireWellFormed);
-    }
-}
+  /**
+   * produces an XML serialization of root passing a value of false for the
+   * require well-formed parameter, and return the result.
+   *@param {Node} root - the root node
+   *@param {boolean} [requireWellFormed=false] - boolean value indicating if it should require xml
+   * well formedness
+   *@returns {string}
+   */
+  serializeToString(root, requireWellFormed) {
+    return this.serializer.serializeToString(root, requireWellFormed);
+  }
+}
+
+/**
+ * installs the serialize to the given target object
+ */
+XMLSerializer.install = target => {
+  target.XMLSerializer = XMLSerializer;
+};