You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
47 lines
1.1 KiB
JavaScript
47 lines
1.1 KiB
JavaScript
'use strict';
|
|
|
|
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`
|
|
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});
|
|
}
|
|
|
|
return spawned;
|
|
};
|
|
|
|
// Use promises instead of `child_process` events
|
|
const getSpawnedPromise = spawned => {
|
|
return 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);
|
|
});
|
|
}
|
|
});
|
|
};
|
|
|
|
module.exports = {
|
|
mergePromise,
|
|
getSpawnedPromise
|
|
};
|
|
|