Update strings.ts

src/common/strings.ts

@@ -1,13 +1,39 @@
+/**
+ * Make the first char upper case.
+ * @param str input string
+ * @returns string with at least first char in upper case.
+ */
+export function capitalize(str: string) {
+  return str.charAt(0).toUpperCase() + str.slice(1);
+}
+
+/**
+ * Join strings as a space separated string.
+ * @param strings Input strings
+ * @returns spaces separated string
+ */
+export function join(...strings: (string | undefined)[]) {
+  return strings.filter(Boolean).join(' ');
+}
+
 export const leadingZeros = (
   val: number | string,
   maxLength: number = 2,
   fillString: string = "0"
 ) => String(val).padStart(maxLength, fillString);
 
+/**
+ * Make a camel case string from a sentence.
+ * @param s string is a sentence to turn into camelCase
+ * @returns camelCase text
+ */
 export const toCamel = (s: string) => {
-  return s.replace(/([-_][a-z])/gi, ($1) => {
-    return $1.toUpperCase().replace("-", "").replace("_", "");
-  });
+  return (
+    s.charAt(0).toLowerCase() +
+    s.slice(1).replace(/([-_ ][a-zA-Z])/gi, ($1) => {
+      return $1.toUpperCase().replace(/[-_ ]/gi, '');
+    })
+  );
 };
 
 export const camelToSnakeCase = (str: string) =>