function fileType() {
return new Promise((resolve, reject) => {
let Fields = fs.readdir(
path.resolve(__dirname, "access"),
(err, files) => {
if (err) {
reject(err);
return;
} else {
files.map((file) => {
return file.split(".").slice(0, -1).join(".");
});
}
}
);
resolve(Fields);
});
}
async function ambitious(data) {
let fields = [];
if (data.collections) {
fields= await fileType();
} else {
if(data.types.access){
fields.push(data.config.access);
}
else{
fields= await fileType();
}
}
return {
data_name: data.name,
data_access: data.config,
data_encrypted: data.encrypt,
data_fields: fields,
};
}
Here I am trying to return field value from the if statement and store it in the data_fields
here problem is I am getting the values from the else statement but when I am trying to return value from If statement its showing undefined
As I want to read all the files which are present inside the access and remove the file extension and as an array I want to store it in data_fields
for eg if files are present inside access
let files=[ 'config.sql','admin.xml', 'user_manual.txt' ]
for that purpose I used split and slice to remove all the extension and return data in array format in data_fields
I don't know how to return value from fs.readdir and store it in data_fields
Node already offers a Promise version of the fs API. You don't need to wrap the callback version in a Promise.
import { promises } from "fs";
async function fileType () {
let files = await promises.readdir(path.resolve(__dirname, "access"));
return files.map( file => file.split(".").slice(0, -1).join("."));
}
Try like this
function fileType() {
return new Promise((resolve, reject) => {
fs.readdir(
path.resolve(__dirname, "access"),
(err, files) => {
if (err) {
reject(err);
} else {
resolve(files.map((file) => { // resolve here
return file.split(".").slice(0, -1).join(".");
}))
}
}
);
// if you resolve you promise here, you resolve it before the readdir has been resolved itself.
});
}