37 lines
1.1 KiB
Plaintext
37 lines
1.1 KiB
Plaintext
// eslint-disable-next-line unicorn/prefer-top-level-await
|
|
const nativePromisePrototype = (async () => {})().constructor.prototype;
|
|
|
|
const descriptors = ['then', 'catch', 'finally'].map(property => [
|
|
property,
|
|
Reflect.getOwnPropertyDescriptor(nativePromisePrototype, property),
|
|
]);
|
|
|
|
// The return value is a mixin of `childProcess` and `Promise`
|
|
export const mergePromise = (spawned, promise) => {
|
|
for (const [property, descriptor] of descriptors) {
|
|
// Starting the main `promise` is deferred to avoid consuming streams
|
|
const value = typeof promise === 'function'
|
|
? (...args) => Reflect.apply(descriptor.value, promise(), args)
|
|
: descriptor.value.bind(promise);
|
|
|
|
Reflect.defineProperty(spawned, property, {...descriptor, value});
|
|
}
|
|
};
|
|
|
|
// Use promises instead of `child_process` events
|
|
export const getSpawnedPromise = spawned => new Promise((resolve, reject) => {
|
|
spawned.on('exit', (exitCode, signal) => {
|
|
resolve({exitCode, signal});
|
|
});
|
|
|
|
spawned.on('error', error => {
|
|
reject(error);
|
|
});
|
|
|
|
if (spawned.stdin) {
|
|
spawned.stdin.on('error', error => {
|
|
reject(error);
|
|
});
|
|
}
|
|
});
|