parseBoxShadowValue.diff

diff --git a/src/util/parseBoxShadowValue.js b/src/util/parseBoxShadowValue.js
index eb4872c7..5ed74a9e 100644
--- a/src/util/parseBoxShadowValue.js
+++ b/src/util/parseBoxShadowValue.js
@@ -1,58 +1,27 @@
-let KEYWORDS = new Set(['inset', 'inherit', 'initial', 'revert', 'unset'])
+let KEYWORDS = ['inset', 'inherit', 'initial', 'revert', 'unset']
 let COMMA = /\,(?![^(]*\))/g // Comma separator that is not located between brackets. E.g.: `cubiz-bezier(a, b, c)` these don't count.
 let SPACE = /\ +(?![^(]*\))/g // Similar to the one above, but with spaces instead.
-let LENGTH = /^-?(\d+)(.*?)$/g
 
-export function parseBoxShadowValue(input) {
+export function parseBoxShadowValue (input) {
   let shadows = input.split(COMMA)
+
   return shadows.map((shadow) => {
     let value = shadow.trim()
-    let result = { raw: value }
     let parts = value.split(SPACE)
-    let seen = new Set()
-
-    for (let part of parts) {
-      // Reset index, since the regex is stateful.
-      LENGTH.lastIndex = 0
-
-      // Keyword
-      if (!seen.has('KEYWORD') && KEYWORDS.has(part)) {
-        result.keyword = part
-        seen.add('KEYWORD')
-      }
+    let output = { raw: value }
 
-      // Length value
-      else if (LENGTH.test(part)) {
-        if (!seen.has('X')) {
-          result.x = part
-          seen.add('X')
-        } else if (!seen.has('Y')) {
-          result.y = part
-          seen.add('Y')
-        } else if (!seen.has('BLUR')) {
-          result.blur = part
-          seen.add('BLUR')
-        } else if (!seen.has('SPREAD')) {
-          result.spread = part
-          seen.add('SPREAD')
-        }
-      }
-
-      // Color or unknown
-      else {
-        if (!result.color) {
-          result.color = part
-        } else {
-          if (!result.unknown) result.unknown = []
-          result.unknown.push(part)
-        }
-      }
+    if (KEYWORDS.includes(parts[0])) {
+      output.keyword = parts.shift()
     }
 
-    // Check if valid
-    result.valid = result.x !== undefined && result.y !== undefined
+    output.color = parts.pop()
+    output.x = parts.shift()
+    output.y = parts.shift()
+    output.blur = parts.shift()
+    output.spread = parts.shift()
+    output.valid = output.x !== undefined && output.y !== undefined
 
-    return result
+    return output
   })
 }