fingerprintjs

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import { getBrowserMajorVersion, isSafari } from '../../tests/utils'
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import getCanvasFingerprint, { ImageStatus } from './canvas'
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describe('Sources', () => {
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  describe('canvas', () => {
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    it('returns expected value', async () => {
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      const { winding, text, geometry } = await getCanvasFingerprint()
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      expect(winding).toBeTrue()
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      if (shouldSkip()) {
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        expect(text).toBe(ImageStatus.Skipped)
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        expect(geometry).toBe(ImageStatus.Skipped)
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      } else {
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        expect(isDataURL(geometry)).toBeTrue()
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        expect(isDataURL(text)).toBeTrue()
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        expect(geometry.length).toBeGreaterThan(1000)
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        expect(text.length).toBeGreaterThan(1000)
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      }
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    })
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    it('returns stable values', async () => {
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      const first = await getCanvasFingerprint()
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      const second = await getCanvasFingerprint()
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      expect(second).toEqual(first)
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    })
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  })
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})
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function shouldSkip() {
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  return isSafari() && (getBrowserMajorVersion() ?? 0) >= 17
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}
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function isDataURL(url: string) {
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  return /^data:image\/png;base64,([0-9a-zA-Z+/]{4})*(([0-9a-zA-Z+/]{2}==)|([0-9a-zA-Z+/]{3}=))?$/.test(url)
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}
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