Created
May 29, 2016 22:38
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function createSource(url) { | |
const source = fakeSource(url) | |
let deferred | |
source.onmessage = event => { | |
if(deferred) { | |
deferred.resolve(JSON.parse(event.data)) | |
deferred = null | |
} | |
} | |
return { | |
nextMessage() { | |
if(!deferred) { | |
deferred = {} | |
deferred.promise = | |
new Promise(resolve => deferred.resolve = resolve) | |
} | |
return deferred.promise | |
} | |
} | |
} |
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