Add replaceSmartQuotes function (#324)

src/functions.ts

@@ -217,3 +217,14 @@ export function youtube(text: string): string {
 		...TRIM_SYMBOLS_FILTER_RULES,
 	]);
 }
+
+/**
+ * Replace smart quotes with regular quotes.
+ *
+ * @param text String to be filtered
+ *
+ * @return Filtered string
+ */
+export function replaceSmartQuotes(text: string): string {
+	return text.replace(/[\u2018\u2019]/g, "'").replace(/[\u201c\u201d]/g, '"');
+}

test/fixtures/functions/replace-smart-quotes.json

@@ -0,0 +1,32 @@
+[
+  {
+    "description": "should do nothing with clean string",
+    "funcParameter": "Track field",
+    "expectedValue": "Track field"
+  },
+  {
+    "description": "should remove a double left single quotation space",
+    "funcParameter": "Track \u201cfield",
+    "expectedValue": "Track \"field"
+  },
+  {
+    "description": "should remove a double left and double right quotation space",
+    "funcParameter": "Track \u201cfield\u201d",
+    "expectedValue": "Track \"field\""
+  },
+  {
+    "description": "should remove a single left single quotation space",
+    "funcParameter": "Track \u2018field",
+    "expectedValue": "Track 'field"
+  },
+  {
+    "description": "should remove a single left and single right quotation space",
+    "funcParameter": "Track \u2018field\u2019",
+    "expectedValue": "Track 'field'"
+  },
+  {
+    "description": "should remove a single left and double right quotation space",
+    "funcParameter": "Track \u2018field\u201d",
+    "expectedValue": "Track 'field\""
+  }
+]

test/functions.spec.ts

@@ -21,6 +21,7 @@ import {
 	removeFeature,
 	youtube,
 	fixVariousArtists,
+	replaceSmartQuotes,
 } from '../src';
 
 const functionsToTest = {
@@ -38,6 +39,7 @@ const functionsToTest = {
 	'remove-version': removeVersion,
 	'remove-parody': removeParody,
 	'remove-feature': removeFeature,
+	'replace-smart-quotes': replaceSmartQuotes,
 	youtube: youtube,
 };