fix: restore getEntryPathRegExp for backward compatibility with older webpack.config.js (#1000)

Author: KristianDD

index.js

@@ -60,6 +60,18 @@ exports.getAppPath = (platform, projectDir) => {
     }
 };
 
+/**
+ * For backward compatibility. This method is deprecated. Do not use it anymore.
+ * This method also has a bug of not escaping valid regex symbols in entry path.
+ * For module rules use: "include" instead of "test".
+ */
+exports.getEntryPathRegExp = (appFullPath, entryModule) => {
+    const entryModuleFullPath = path.join(appFullPath, entryModule);
+    // Windows paths contain `\`, so we need to convert each of the `\` to `\\`, so it will be correct inside RegExp
+    const escapedPath = entryModuleFullPath.replace(/\\/g, "\\\\");
+    return new RegExp(escapedPath);
+}
+
 exports.getSourceMapFilename = (hiddenSourceMap, appFolderPath, outputPath) => {
     const appFolderRelativePath = path.join(path.relative(outputPath, appFolderPath));
     let sourceMapFilename = "[file].map";