fix: use old error style

Author: jdx

src/errors.ts

@@ -8,7 +8,7 @@ import {inspect} from 'util'
 import {CLI} from '.'
 import {ErrorMessage, Message} from './message'
 
-const arrow = process.platform === 'win32' ? ' ×' : ' ✖'
+const arrow = process.platform === 'win32' ? ' !' : ' ▸'
 
 function bangify(msg: string, c: string): string {
   const lines = msg.split('\n')

test/errors.test.ts

@@ -10,10 +10,11 @@ beforeEach(() => {
 describe.stderr('errors', () => {
   it('warns', () => {
     cli.warn('foobar')
-    expect(output.stderr).to.equal(' ✖    foobar\n')
+    expect(output.stderr).to.equal(' ▸    foobar\n')
   })
 
   it('errors', () => {
     expect(() => cli.error('foobar')).to.throw(/foobar/)
+    expect(output.stderr).to.equal(' ▸    foobar\n')
   })
 })