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FFI Requires setTimeout #176

Description

@BebeSparkelSparkel

When using FFI for Aff I need to use setTimeout before calling onSuccess or else the page hangs as if onSuccess was never called. Feels like there is some listener setup in the wrong order or onSuccess is defined after the return.

Failing example without timeout.

exports.failing = s => (onError, onSuccess) => {
  onSuccess(s)
  return (cancelError, cancelerError, cancelerSuccess) => {cancelerSuccess()}
}

Working example with timeout.

exports.working = s => (onError, onSuccess) => {
  setTimeout(() => onSuccess(s), 100)
  return (cancelError, cancelerError, cancelerSuccess) => {cancelerSuccess()}
}

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