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// Hardcoded module "node:fs/promises"
const constants = $processBindingConstants.fs;
var fs = Bun.fs();
// note: this is not quite the same as how node does it
// in some cases, node swaps around arguments or makes small tweaks to the return type
// this is just better than nothing.
const notrace = "::bunternal::";
var promisify = {
[notrace]: fsFunction => {
return async function (...args) {
await 1;
return fsFunction.apply(fs, args);
};
},
}[notrace];
function watch(
filename: string | Buffer | URL,
options: { encoding?: BufferEncoding; persistent?: boolean; recursive?: boolean; signal?: AbortSignal } = {},
) {
type Event = {
eventType: string;
filename: string | Buffer | undefined;
};
if (filename instanceof URL) {
throw new TypeError("Watch URLs are not supported yet");
} else if (Buffer.isBuffer(filename)) {
filename = filename.toString();
} else if (typeof filename !== "string") {
throw new TypeError("Expected path to be a string or Buffer");
}
let nextEventResolve: Function | null = null;
if (typeof options === "string") {
options = { encoding: options };
}
const queue = $createFIFO();
const watcher = fs.watch(filename, options || {}, (eventType: string, filename: string | Buffer | undefined) => {
queue.push({ eventType, filename });
if (nextEventResolve) {
const resolve = nextEventResolve;
nextEventResolve = null;
resolve();
}
});
return {
[Symbol.asyncIterator]() {
let closed = false;
return {
async next() {
while (!closed) {
let event: Event;
while ((event = queue.shift() as Event)) {
if (event.eventType === "close") {
closed = true;
return { value: undefined, done: true };
}
if (event.eventType === "error") {
closed = true;
throw event.filename;
}
return { value: event, done: false };
}
const { promise, resolve } = Promise.withResolvers();
nextEventResolve = resolve;
await promise;
}
return { value: undefined, done: true };
},
return() {
if (!closed) {
watcher.close();
closed = true;
if (nextEventResolve) {
const resolve = nextEventResolve;
nextEventResolve = null;
resolve();
}
}
return { value: undefined, done: true };
},
};
},
};
}
let lazy_cp: any = null;
// attempt to use the native code version if possible
// and on MacOS, simple cases of recursive directory trees can be done in a single `clonefile()`
// using filter and other options uses a lazily loaded js fallback ported from node.js
function cp(src, dest, options) {
if (!options) return fs.cp(src, dest);
if (typeof options !== "object") {
throw new TypeError("options must be an object");
}
if (options.dereference || options.filter || options.preserveTimestamps || options.verbatimSymlinks) {
if (!lazy_cp) lazy_cp = require("../internal/fs/cp-sync");
return lazy_cp!(src, dest, options);
}
return fs.cp(src, dest, options.recursive, options.errorOnExist, options.force ?? true, options.mode);
}
export default {
access: promisify(fs.accessSync),
appendFile: promisify(fs.appendFileSync),
close: promisify(fs.closeSync),
copyFile: fs.copyFile.bind(fs),
cp,
exists: promisify(fs.existsSync),
chown: promisify(fs.chownSync),
chmod: promisify(fs.chmodSync),
fchmod: promisify(fs.fchmodSync),
fchown: promisify(fs.fchownSync),
fstat: promisify(fs.fstatSync),
fsync: promisify(fs.fsyncSync),
ftruncate: promisify(fs.ftruncateSync),
futimes: promisify(fs.futimesSync),
lchmod: promisify(fs.lchmodSync),
lchown: promisify(fs.lchownSync),
link: promisify(fs.linkSync),
lstat: fs.lstat.bind(fs),
mkdir: promisify(fs.mkdirSync),
mkdtemp: promisify(fs.mkdtempSync),
open: promisify(fs.openSync),
read: promisify(fs.readSync),
write: promisify(fs.writeSync),
readdir: fs.readdir.bind(fs),
readFile: fs.readFile.bind(fs),
writeFile: promisify(fs.writeFileSync),
readlink: promisify(fs.readlinkSync),
realpath: fs.realpath.bind(fs),
rename: promisify(fs.renameSync),
stat: fs.stat.bind(fs),
symlink: promisify(fs.symlinkSync),
truncate: promisify(fs.truncateSync),
unlink: promisify(fs.unlinkSync),
utimes: promisify(fs.utimesSync),
lutimes: promisify(fs.lutimesSync),
rm: promisify(fs.rmSync),
rmdir: promisify(fs.rmdirSync),
writev: (fd, buffers, position) => {
return new Promise((resolve, reject) => {
try {
var bytesWritten = fs.writevSync(fd, buffers, position);
} catch (err) {
reject(err);
return;
}
resolve({
bytesWritten,
buffers,
});
});
},
readv: (fd, buffers, position) => {
return new Promise((resolve, reject) => {
try {
var bytesRead = fs.readvSync(fd, buffers, position);
} catch (err) {
reject(err);
return;
}
resolve({
bytesRead,
buffers,
});
});
},
constants,
watch,
};
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