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fsasync.js
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fsasync.js
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// fsasync stuff
const fs = require("fs");
fs.promises = {};
fs.promises.readdir = function (folder) {
return new Promise(function (resolve, reject) {
try {
fs.readdir(folder, function (err, files) {
if (err) reject(err);
else resolve(files);
});
}
catch (err) {
reject(err);
}
});
};
fs.promises.readFile = function (filename, encoding) {
return new Promise(function (resolve, reject) {
try {
let enc = (encoding === undefined) ? "utf8" : encoding;
fs.readFile(filename, enc, function (err, buffer) {
if (err) reject(err);
else resolve(buffer);
});
}
catch (err) {
reject(err);
}
});
};
fs.promises.writeFile = function (filename, data, encoding) {
return new Promise(function (resolve, reject) {
try {
let enc = encoding === undefined ? "utf8" : encoding;
fs.writeFile(filename, data, enc, function (err) {
if (err) reject(err);
else resolve();
});
}
catch (err) {
reject(err);
}
});
};
fs.promises.stat = function (path) {
return new Promise(function (resolve, reject) {
try {
fs.stat(path, function (statObj, err) {
if (err) reject(err);
else resolve(statObj);
});
}
catch (err) {
reject(err);
}
});
};
fs.promises.exists = function (path, modes) {
console.log("exists?", path);
modes = modes !== undefined ? modes : fs.constants.R_OK | fs.constants.W_OK;
return new Promise((resolve, reject) => {
try {
fs.access(path, modes, err => {
if (err) resolve(false);
else resolve(true);
});
}
catch (err) {
reject(err);
}
});
};
fs.promises.access = function (path, modes) {
modes = modes !== undefined ? modes : fs.constants.R_OK | fs.constants.W_OK;
return new Promise((resolve, reject) => {
try {
fs.access(path, modes, err => {
if (err) resolve(false);
else resolve(true);
});
}
catch (err) {
reject(err);
}
});
};
fs.promises.mkdir = function (path) {
return new Promise((resolve, reject) => {
try {
fs.mkdir(path, err => {
if (err) reject(err);
else resolve(true);
});
}
catch (err) {
reject(err);
}
});
};
fs.promises.rename = function (oldPath, newPath) {
return new Promise((resolve, reject) => {
try {
fs.rename(oldPath, newPath, err => {
if (err) reject(err);
else resolve(true);
});
}
catch (err) {
reject(err);
}
});
};
module.exports = fs;
// fsasync.js ends here