Add substringBetween string extension

leancodepl · Nov 1, 2023 · 477bb8a · 477bb8a
1 parent 6be9d45
commit 477bb8a
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Showing 2 changed files with 7 additions and 1 deletion.
diff --git a/src/global.d.ts b/src/global.d.ts
@@ -8,6 +8,8 @@ declare global {
 
     substringAfter(text: string): string;
 
+    substringBetween(start: string, end: string): string;
+
     substringUpTo(text: string): string;
 
     substringUpToAndIncluding(text: string): string;

diff --git a/src/util/extensions.ts b/src/util/extensions.ts
@@ -17,6 +17,10 @@ String.prototype.substringAfter = function (text: string) {
   return this.substring(this.indexOf(text) + text.length);
 };
 
+String.prototype.substringBetween = function (start: string, end: string) {
+  return this.substring(this.indexOf(start) + start.length, this.indexOf(end));
+};
+
 String.prototype.substringUpTo = function (text: string) {
   return this.substring(0, this.indexOf(text));
 };
@@ -25,7 +29,7 @@ String.prototype.substringUpToAndIncluding = function (text: string) {
   return this.substring(0, this.indexOf(text) + text.length);
 };
 
-Array.prototype.whereType = function <T>() {
+Array.prototype.whereType = function <T>(): Array<T> {
   return this.filter((element): element is T => !!element);
 };