Typescript fatal error fixed - Fix issue #20

[AdrienTorris]

fixes #20

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[AdrienTorris]

I signed it!

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CLAs look good, thanks!

[AdrienTorris]

This PR fixes the error TS6053 : File 'typings/browser.d.ts' not found

[AdrienTorris]

the commit b9b99f2 has no content because it was just about re-call the google cla bot