feat: string to upper case snake case conversion function

src/helpers.js

@@ -16,6 +16,14 @@ function toTitleCase(str) {
     );
 }
 
+const toUpperSnakeCase = (str) => {
+    return str
+        .replace(/([a-z])([A-Z])/g, '$1_$2') // Add underscore before capital letters
+        .replace(/[^a-zA-Z0-9_]/g, '_') // Replace non-alphanumeric characters with underscore
+        .toUpperCase(); // Convert to uppercase
+}
+
+
 /**
  * Removes newline characters \r and/or \n from a string
  * @param {string} string to remove newlines from
@@ -213,6 +221,7 @@ module.exports = {
   streamToBuffer,
   stripNewLines,
   toTitleCase,
+  toUpperSnakeCase,
   unixTimestamp,
   writeFile
 }

src/helpers.test.js

@@ -30,5 +30,13 @@ describe('helpers',()=> {
         expect(helper.sparkline(input,label, options)).toBe(expectedOutput)
     })
 
+    it('should return an upper case snake case string',()=>{
+        const expectedOutput = 'NEXT_WEEK';
+        const inputs = ['nextWeek','next-week','next_week'];
+        inputs.forEach( i => {
+            expect(helper.toUpperSnakeCase(i)).toBe(expectedOutput)
+        })
+    })
+
 })