Commit helpers

src/helpers.ts

@@ -1,5 +1,37 @@
+import type {SyntheticEvent} from "react";
+
 export function truthy(value: string | null | undefined) {
     if (value == undefined) return false;
     return value.toLowerCase() == 'true' || value == '1';
 }
 
+export function onPromise<T>(promise: (event: SyntheticEvent) => Promise<T>) {
+    return (event: SyntheticEvent) => {
+        if (promise) {
+            promise(event).catch((error) => {
+                console.log("Unexpected error", error);
+            });
+        }
+    };
+}
+
+/**
+ * Truncate a string dynamically to ensure maxLength is not exceeded & an ellipsis is used.
+ * Behavior undefined when ellipsis exceeds {maxLength}.
+ * @param input The input string
+ * @param maxLength A positive number representing the maximum length the input string should be.
+ * @param ellipsis A string representing what should be placed on the end when the max length is hit.
+ */
+export function truncated(input: string, maxLength: number, ellipsis = '...') {
+    if (maxLength <= 0) return '';
+    if (input.length <= maxLength) return input;
+    return input.substring(0, Math.max(0, maxLength - ellipsis.length)) + ellipsis;
+}
+
+/**
+ * A helper method for combining strings of classes in React.
+ * @param classes
+ */
+export function classNames(...classes: (string | null | undefined)[]) {
+    return classes.filter(Boolean).join(" ");
+}