fix uppercase units

Author: jacobp100

src/__tests__/index.js

@@ -127,6 +127,13 @@ it('allows negative values in transformed values', () => {
   })
 })
 
+it('allows uppercase units', () => {
+  expect(transformCss([['top', '0PX']])).toEqual({ top: 0 })
+  expect(transformCss([['transform', 'rotate(30DEG)']])).toEqual({
+    transform: [{ rotate: '30deg' }],
+  })
+})
+
 it('allows percent values in transformed values', () => {
   expect(transformCss([['margin', '10%']])).toEqual({
     marginTop: '10%',

src/tokenTypes.js

@@ -31,12 +31,12 @@ const noneRe = /^(none)$/i
 const autoRe = /^(auto)$/i
 const identRe = /(^-?[_a-z][_a-z0-9-]*$)/i
 // Note if these are wrong, you'll need to change index.js too
-const numberRe = /^([+-]?(?:\d*\.)?\d+(?:[Ee][+-]?\d+)?)$/
+const numberRe = /^([+-]?(?:\d*\.)?\d+(?:e[+-]?\d+)?)$/i
 // Note lengthRe is sneaky: you can omit units for 0
-const lengthRe = /^(0$|(?:[+-]?(?:\d*\.)?\d+(?:[Ee][+-]?\d+)?)(?=px$))/
-const unsupportedUnitRe = /^([+-]?(?:\d*\.)?\d+(?:[Ee][+-]?\d+)?(ch|em|ex|rem|vh|vw|vmin|vmax|cm|mm|in|pc|pt))$/
-const angleRe = /^([+-]?(?:\d*\.)?\d+(?:[Ee][+-]?\d+)?(?:deg|rad))$/
-const percentRe = /^([+-]?(?:\d*\.)?\d+(?:[Ee][+-]?\d+)?%)$/
+const lengthRe = /^(0$|(?:[+-]?(?:\d*\.)?\d+(?:e[+-]?\d+)?)(?=px$))/i
+const unsupportedUnitRe = /^([+-]?(?:\d*\.)?\d+(?:e[+-]?\d+)?(ch|em|ex|rem|vh|vw|vmin|vmax|cm|mm|in|pc|pt))$/i
+const angleRe = /^([+-]?(?:\d*\.)?\d+(?:e[+-]?\d+)?(?:deg|rad))$/i
+const percentRe = /^([+-]?(?:\d*\.)?\d+(?:e[+-]?\d+)?%)$/i
 
 const noopToken = predicate => node => (predicate(node) ? '<token>' : null)
 

src/transforms/transform.js

@@ -5,7 +5,7 @@ const { SPACE, COMMA, LENGTH, NUMBER, ANGLE } = tokens
 const oneOfType = tokenType => functionStream => {
   const value = functionStream.expect(tokenType)
   functionStream.expectEmpty()
-  return value
+  return typeof value === 'string' ? value.toLowerCase() : value
 }
 
 const singleNumber = oneOfType(NUMBER)