Exit on regex error

README.md

@@ -98,12 +98,12 @@ Via CLI:
 replace-in-file from to some/file.js,some/**/glob.js [--isRegex]
 ```
 
-The options `allowEmptyPaths` and `encoding` are supported in the CLI.
-In addition, the CLI supports the `verbose` option to list the changed files.
+The flags `allowEmptyPaths` and `encoding` are supported in the CLI.
+In addition, the CLI supports the `verbose` flag to list the changed files.
 
 Multiple files or globs can be replaced by providing a comma separated list.
 
-A regular expression may be used for the `from` parameter by specifying the `--isRegex` option.
+A regular expression may be used for the `from` parameter by specifying the `--isRegex` flag.
 
 ## License
 (MIT License)

bin/cli.js

@@ -23,16 +23,18 @@ const files = argv._.reduce((files, file) => {
   return files.concat(file.split(','));
 }, []);
 
-// If the --isRegex flag is passed, send the 'from' parameter
-// to the lib as a RegExp object
+//If the --isRegex flag is passed, send the 'from' parameter
+//to the lib as a RegExp object
 if (argv.isRegex) {
   const flags = from.replace(/.*\/([gimy]*)$/, '$1');
   const pattern = from.replace(new RegExp(`^/(.*?)/${flags}$`), '$1');
   try {
     from = new RegExp(pattern, flags);
   }
   catch (error) {
-    console.error('Could not create RegExp from \'from\' parameter', error);
+    console.error('Could not create RegExp from \'from\' parameter:');
+    console.error(error);
+    process.exit(1);
   }
 }