chore(utils): ts-migration of utils/slugs (#44921)

* chore: utils is added in the tsconfig

* test(util): test and test function is updated to typescript

* chore: add tsconfig for utils

* fix: exclude files importing from client/

* fix: refactor to just export functions

* chore: add emitted files to prettierignore

* fix: add new tsconfig to eslint project

Co-authored-by: Shaun Hamilton <shauhami020@gmail.com>
Co-authored-by: Oliver Eyton-Williams <ojeytonwilliams@gmail.com>

utils/slugs.test.ts

@@ -1,7 +1,6 @@
-const slugs = require('./slugs');
+import { dasherize, nameify, unDasherize } from './slugs';
 
 describe('dasherize', () => {
-  const { dasherize } = slugs;
   it('returns a string', () => {
     expect(dasherize('')).toBe('');
   });
@@ -26,7 +25,6 @@ describe('dasherize', () => {
 });
 
 describe('nameify', () => {
-  const { nameify } = slugs;
   it('returns a string', () => {
     expect(nameify('')).toBe('');
   });
@@ -36,7 +34,6 @@ describe('nameify', () => {
 });
 
 describe('unDasherize', () => {
-  const { unDasherize } = slugs;
   it('returns a string', () => {
     expect(unDasherize('')).toBe('');
   });

utils/slugs.ts

@@ -1,16 +1,16 @@
-exports.dasherize = function dasherize(name) {
+function dasherize(name: string): string {
   return ('' + name)
     .toLowerCase()
     .trim()
     .replace(/\s|\./g, '-')
     .replace(/[^a-z\d\-.]/g, '');
-};
+}
 
-exports.nameify = function nameify(str) {
+function nameify(str: string): string {
   return ('' + str).replace(/[^a-z\d\s]/gi, '');
-};
+}
 
-exports.unDasherize = function unDasherize(name) {
+function unDasherize(name: string): string {
   return (
     ('' + name)
       // replace dash with space
@@ -19,4 +19,6 @@ exports.unDasherize = function unDasherize(name) {
       .replace(/[^a-z\d\s]/gi, '')
       .trim()
   );
-};
+}
+
+export { dasherize, nameify, unDasherize };

utils/tsconfig.json

@@ -0,0 +1,9 @@
+{
+  "include": ["**/*.ts", "**/*.test.ts"],
+  "exclude": ["./__fixtures__"],
+  "extends": "../tsconfig-base.json",
+  "compilerOptions": {
+    "noEmit": false,
+    "module": "CommonJS"
+  }
+}