message: update themeGet to respect functional variables
diff: @@ -10,7 +10,7 @@ describe('themeGet', () => {
  })
  it('uses primer theme as fallback', () => {
  - expect(themeGet('colors.gray.1')({})).toBe('#f6f8fa')
  - expect(themeGet('colors.gray.1')({theme: {colors: {foo: 'bar'}}})).toBe('#f6f8fa')
  + expect(themeGet('colors.text.primary')({})).toBe('#24292e')
  + expect(themeGet('colors.text.primary')({theme: {colors: {foo: 'bar'}}})).toBe('#24292e')
  })
  })
  