const fs = require("fs");

const os = require("os");

const path = require("path");

const filePath = path.join(os.tmpdir(), "my-temp-file.txt");

if (!fs.existsSync(filePath)) {

fs.writeFileSync(filePath, "Hello", { mode: 0o600 }); // $ Alert

}

const filePath2 = createFile();

const stats = fs.statSync(filePath2);

if (doSomethingWith(stats)) {

fs.writeFileSync(filePath2, "content"); // $ Alert

}

fs.access(filePath2, fs.constants.F_OK, (err) => {

fs.writeFileSync(filePath2, "content"); // $ Alert

});

fs.open("myFile", "rw", (err, fd) => {

fs.writeFileSync(fd, "content");

});

import { open, close } from "fs";

fs.access("myfile", (err) => {

if (!err) {

console.error("myfile already exists");

return;

}

fs.open("myfile", "wx", (err, fd) => {

if (err) throw err;

// ....

}); // $ Alert

});

const filePath3 = createFile();

if (fs.existsSync(filePath3)) {

fs.readFileSync(filePath3); // OK - a read after an existence check is OK

}

const filePath4 = createFile();

while(Math.random() > 0.5) {

fs.open(filePath4); // OK - it is only ever opened here.

}