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dpeek/gist:a9bb8231c4c64451cef119f67d21bdb1

Last active May 30, 2017 20:49
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gistfile1.txt
/* @flow */
type ErrorResponse = {
code: 'Error',
message: string
}
type ResultResponse = {}
function test (): Promise<ResultResponse | ErrorResponse> {
return new Promise(() => {})
}
test().then(res => {
if (res.code === 'Error') {
throw new Error(res.message)
}
return res
})
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