saver.connectMongo()
.then(async () => {
const data = await saver.getFileContent(filename);
console.log(data);
saver.saveCodeToMongo1(data);
}); the result of this code is that data outputs first, that is, it outputs undefined . Can you help me understand why this happens?
there is a problem with the saver.getFileContent code. Check the return value of this method
the method after await must return promise. The estimated problem is that there is a problem with the return value of your saver.getFileContent method
simply explain the questions and answers with a small demo:
if the Promise object is not returned in the async function
async function foo() {
let data;
setTimeout(() => {
data = 1;
console.log(data); // 1
return data;
})
}
(async () => {
const data = await foo();
console.log(data); // undefined
})();
// :
// undefined
// 1is changed to correct writing
async function foo() {
let data;
return new Promise((resolve, reject) => {
setTimeout(() => {
data = 1;
resolve(data);
});
});
}
(async () => {
const data = await foo();
console.log(data);
})();
// :
// 1this problem is difficult to describe, but I ll try to ,orm(typeOrm),mockProjectPanorama(ProjectPanorama) 3Panorama(mockData.defaultPanoramas) 3Panorama3ProjectPanorama ProjectPanorama projectId panoramaId 1 3 1 3 1 3 3panorama, ,le...