feat(parser): use ColorFormat enum in detectColorFormat function

The detectColorFormat function's return value is updated to use ColorFormat enum values for accuracy and consistency. String literals are replaced with the appropriate enum values from ColorFormats.

src/parser/detectColorFormat.ts

@@ -8,23 +8,24 @@ import { isValidNamedColor } from '@/validations/isValidNamedColor';
 import { isValidLch } from '@/validations/isValidLch';
 import { isValidXyz } from '@/validations/isValidXyz';
 import { isValidLab } from '@/validations/isValidLab';
+import { ColorFormat, ColorFormats } from '@/utils/colorFormats';
 
 /**
  * Detects the color format of a given input string.
  *
  * @param {string} color - The input color string.
  * @returns {string} - The detected color format or 'unknown'.
  */
-export function detectColorFormat(color: string): string {
-    if (isValidHex(color)) return 'hex';
-    if (isValidHexAlpha(color)) return 'hex-alpha';
-    if (isValidRgb(color)) return 'rgb';
-    if (isValidRgba(color)) return 'rgba';
-    if (isValidHsl(color)) return 'hsl';
-    if (isValidHsla(color)) return 'hsla';
-    if (isValidNamedColor(color)) return 'named';
-    if (isValidLch(color)) return 'lch';
-    if (isValidXyz(color)) return 'xyz';
-    if (isValidLab(color)) return 'lab';
-    return 'unknown';
+export function detectColorFormat(color: string): ColorFormat {
+    if (isValidHex(color)) return ColorFormats.HEX;
+    if (isValidHexAlpha(color)) return ColorFormats.HEX_ALPHA;
+    if (isValidRgb(color)) return ColorFormats.RGB;
+    if (isValidRgba(color)) return ColorFormats.RGBA;
+    if (isValidHsl(color)) return ColorFormats.HSL;
+    if (isValidHsla(color)) return ColorFormats.HSLA;
+    if (isValidNamedColor(color)) return ColorFormats.NAMED;
+    if (isValidLch(color)) return ColorFormats.LCH;
+    if (isValidXyz(color)) return ColorFormats.XYZ;
+    if (isValidLab(color)) return ColorFormats.LAB;
+    return ColorFormats.UNKNOWN;
 }