Added lodash; Added StringUtils.filename

Author: wintondeshong

package-lock.json

@@ -9,13 +9,15 @@
     },
     "dependencies": {
         "axios": "0.19.2",
-        "immutable": "4.0.0-rc.12"
+        "immutable": "4.0.0-rc.12",
+        "lodash": "4.17.15"
     },
     "description": "Common patterns, functions, etc... used when building react applications",
     "devDependencies": {
         "@testing-library/jest-dom": "5.5.0",
         "@testing-library/react": "10.0.4",
         "@types/jest": "25.1.5",
+        "@types/lodash": "4.14.108",
         "@types/node": "13.11.0",
         "@types/rosie": "0.0.37",
         "jest": "25.5.4",

package.json

@@ -1,6 +1,32 @@
 import StringUtils from "./string-utils";
 
 describe("StringUtils", () => {
+    // -------------------------------------------------------------------------------------------------
+    // #region filename
+    // -------------------------------------------------------------------------------------------------
+
+    describe("filename", (): void => {
+        test.each`
+            inputString                       | expected
+            ${null}                           | ${undefined}
+            ${undefined}                      | ${undefined}
+            ${""}                             | ${""}
+            ${"/"}                            | ${""}
+            ${"path/no-extension"}            | ${"no-extension"}
+            ${"path/f.extension"}             | ${"f.extension"}
+            ${"multi/level/file.name"}        | ${"file.name"}
+            ${"mult1/l3v3l/f1l3.nam3"}        | ${"f1l3.nam3"}
+            ${"mult1/l3v3l/file with.spaces"} | ${"file with.spaces"}
+        `(
+            `when inputString is $inputString, returns $expected`,
+            ({ inputString, expected }: any): void => {
+                expect(StringUtils.filename(inputString)).toBe(expected);
+            }
+        );
+    });
+
+    //#endregion filename
+
     // -------------------------------------------------------------------------------------------------
     // #region hasValue
     // -------------------------------------------------------------------------------------------------

src/utilities/string-utils.test.ts

@@ -1,3 +1,5 @@
+import _ from "lodash";
+
 // -----------------------------------------------------------------------------------------
 // #region Constants
 // -----------------------------------------------------------------------------------------
@@ -10,6 +12,13 @@ const REGEX_VALID_EMAIL = /^(([^<>()[\]\\.,;:\s@"]+(\.[^<>()[\]\\.,;:\s@"]+)*)|(
 // #region Functions
 // -----------------------------------------------------------------------------------------
 
+/**
+ * Returns the filename from the supplied string, including extension
+ * @param value
+ */
+const filename = (value?: string): string | undefined =>
+    value?.split("/").pop();
+
 /**
  * Determines whether or not the provided value is NOT `undefined`, `null`, or an empty string
  * (after trimming both ends of the string)
@@ -58,6 +67,7 @@ const truncateRight = (value: string, truncateAtPos: number): string => {
 // -----------------------------------------------------------------------------------------
 
 const StringUtils = {
+    filename,
     hasValue,
     isEmpty,
     isValidEmail,