fix(math): Time units and IE11

Fixes two bugs with `math`. Time units (and angles) are now supported. Also properly works in IE11
(doesn't support Object.values).

fix #405 #407

package.json

@@ -4,7 +4,7 @@
   "main": "lib/index.js",
   "module": "dist/polished.es.js",
   "types": "lib/index.d.ts",
-  "version": "3.0.0",
+  "version": "3.0.1",
   "scripts": {
     "build": "yarn build:lib && yarn build:dist && yarn build:flow && yarn build:docs && yarn build:typescript",
     "prebuild:lib": "shx rm -rf lib/*",

src/math/math.js

@@ -2,7 +2,7 @@
 import defaultSymbolMap from './defaultMathSymbols'
 import PolishedError from '../internalHelpers/_errors'
 
-const unitRegExp = /((?!\w)a|na|hc|mc|me[r]?|xe|ni(?![a-zA-Z])|mm|cp|tp|xp|q(?!s)|hv|xamv|nimv|wv)/g
+const unitRegExp = /((?!\w)a|na|hc|mc|dg|me[r]?|xe|ni(?![a-zA-Z])|mm|cp|tp|xp|q(?!s)|hv|xamv|nimv|wv|sm|(?<![a-zA-Z])s|ged|darg?|nrut)/g
 
 // Merges additional math functionality into the defaults.
 function mergeSymbolMaps(additionalSymbols?: Object): Object {

src/math/test/math.test.js

@@ -2,6 +2,15 @@
 import math from '../math'
 
 describe('math', () => {
+  it('should handle non-length units', () => {
+    expect(math('1ms + 2ms')).toEqual(`${1 + 2}ms`)
+    expect(math('1s + 2s')).toEqual(`${1 + 2}s`)
+    expect(math('1deg + 2deg')).toEqual(`${1 + 2}deg`)
+    expect(math('1grad + 2grad')).toEqual(`${1 + 2}grad`)
+    expect(math('1rad + 2rad')).toEqual(`${1 + 2}rad`)
+    expect(math('1turn + 2turn')).toEqual(`${1 + 2}turn`)
+  })
+
   it('should be able to do simple addition', () => {
     expect(math('1rem + 2rem')).toEqual(`${1 + 2}rem`)
     expect(math('1rem + 2')).toEqual(`${1 + 2}rem`)