Native APIs · hard

38. Wrapping a native module call

Adapt a callback-style native bridge call to a Promise.

Write `callNativeSign(nativeModule, message)` returning a Promise wrapping `nativeModule.sign(message, resolve, reject)` where the native module takes success/error callbacks.

Required in your answer: new Promise(

Transpiled, then run in a sandbox

function callNativeSign(nativeModule, message) {
  // TODO wrap in a Promise
}

Output appears here.

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