refactor: remove shelljs dependency (#842)

Co-authored-by: エリス <erisu@users.noreply.github.com>

bin/lib/utils.js

@@ -0,0 +1,47 @@
+/*
+    Licensed to the Apache Software Foundation (ASF) under one
+    or more contributor license agreements.  See the NOTICE file
+    distributed with this work for additional information
+    regarding copyright ownership.  The ASF licenses this file
+    to you under the Apache License, Version 2.0 (the
+    "License"); you may not use this file except in compliance
+    with the License.  You may obtain a copy of the License at
+
+        http://www.apache.org/licenses/LICENSE-2.0
+
+    Unless required by applicable law or agreed to in writing,
+    software distributed under the License is distributed on an
+    "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+    KIND, either express or implied.  See the License for the
+    specific language governing permissions and limitations
+    under the License.
+*/
+
+/*
+    Provides a set of utility methods, which can also be spied on during unit tests.
+*/
+
+// TODO: Perhaps this should live in cordova-common?
+
+const fs = require('fs-extra');
+
+/**
+ * Reads, searches, and replaces the found occurences with replacementString and then writes the file back out.
+ * A backup is not made.
+ *
+ * @param {string} file A file path to a readable & writable file
+ * @param {RegExp} searchRegex The search regex
+ * @param {string} replacementString The string to replace the found occurences
+ * @returns {void}
+ */
+exports.replaceFileContents = function (file, searchRegex, replacementString) {
+    // let contents;
+    try {
+        var contents = fs.readFileSync(file).toString();
+    } catch (ex) {
+        console.log('TRYING TO READ: ', file);
+        throw ex;
+    }
+    contents = contents.replace(searchRegex, replacementString);
+    fs.writeFileSync(file, contents);
+};