fs module is made to provide helpers to manipulate the filesystem.

Buffering and various utilities for working with Deno's Reader and Writer interfaces.

Utilities for working with OS-specific file paths.

Utilities for working with the Streams API. Includes buffering and conversion.

A variable-sized buffer of bytes with read() and write() methods.

BufReader implements buffering for a Reader object.

BufWriter implements buffering for an deno.Writer object. If an error occurs writing to a Writer, no more data will be accepted and all subsequent writes, and flush(), will return the error. After all data has been written, the client should call the flush() method to guarantee all data has been forwarded to the underlying deno.Writer.

BufWriterSync implements buffering for a deno.WriterSync object. If an error occurs writing to a WriterSync, no more data will be accepted and all subsequent writes, and flush(), will return the error. After all data has been written, the client should call the flush() method to guarantee all data has been forwarded to the underlying deno.WriterSync.

A LimitedReader reads from reader but limits the amount of data returned to just limit bytes. Each call to read updates limit to reflect the new amount remaining. read returns null when limit <= 0 or when the underlying reader returns null.

Reader utility for combining multiple readers

Reader utility for strings

Writer utility for buffering string chunks

A variable-sized buffer of bytes with read() and write() methods.

Transform a stream into a stream where each chunk is divided by a given delimiter.

A TransformStream that will only read & enqueue size amount of bytes. This operation is chunk based and not BYOB based, and as such will read more than needed.

A TransformStream that will only read & enqueue size amount of chunks.

Transform a stream into a stream where each chunk is divided by a given delimiter.

Transform a stream into a stream where each chunk is divided by a newline, be it \n or \r\n. \r can be enabled via the allowCR option.

EndOfLine character enum

Copy a file or directory. The directory can have contents. Like cp -r. Requires the --allow-read and --allow-write flag.

Copy a file or directory. The directory can have contents. Like cp -r. Requires the --allow-read and --allow-write flag.

Detect the EOL character for string input. returns null if no newline

Ensures that a directory is empty. Deletes directory contents if the directory is not empty. If the directory does not exist, it is created. The directory itself is not deleted. Requires the --allow-read and --allow-write flag.

Ensures that a directory is empty. Deletes directory contents if the directory is not empty. If the directory does not exist, it is created. The directory itself is not deleted. Requires the --allow-read and --allow-write flag.

Ensures that the directory exists. If the directory structure does not exist, it is created. Like mkdir -p. Requires the --allow-read and --allow-write flag.

Ensures that the directory exists. If the directory structure does not exist, it is created. Like mkdir -p. Requires the --allow-read and --allow-write flag.

Ensures that the file exists. If the file that is requested to be created is in directories that do not exist. these directories are created. If the file already exists, it is NOTMODIFIED. Requires the --allow-read and --allow-write flag.

Ensures that the file exists. If the file that is requested to be created is in directories that do not exist, these directories are created. If the file already exists, it is NOT MODIFIED. Requires the --allow-read and --allow-write flag.

Ensures that the hard link exists. If the directory structure does not exist, it is created.

Ensures that the hard link exists. If the directory structure does not exist, it is created.

Ensures that the link exists. If the directory structure does not exist, it is created.

Ensures that the link exists. If the directory structure does not exist, it is created.

Test whether or not the given path exists by checking with the file system

Test whether or not the given path exists by checking with the file system

Expand the glob string from the specified root directory and yield each result as a WalkEntry object.

Synchronous version of expandGlob().

Format the file to the targeted EOL

Moves a file or directory

Moves a file or directory synchronously

Walks the file tree rooted at root, yielding each file or directory in the tree filtered according to the given options. The files are walked in lexical order, which makes the output deterministic but means that for very large directories walk() can be inefficient.

Same as walk() but uses synchronous ops

Copy N size at the most. If read size is lesser than N, then returns nread

Read delimited bytes from a Reader.

Read big endian 32bit integer from BufReader

Read strings line-by-line from a Reader.

Read big endian 64bit long from BufReader

Read big endian 16bit short from BufReader

Read delimited strings from a Reader.

Slice number into 64bit big endian byte array

Determines the common path from a set of paths, using an optional separator, which defaults to the OS default separator.

Convert a glob string to a regular expression.

Test whether the given string is a glob

Like join(), but doesn't collapse "**/.." when globstar is true.

Like normalize(), but doesn't collapse "**/.." when globstar is true.

Copies from src to dst until either EOF (null) is read from src or an error occurs. It resolves to the number of bytes copied or rejects with the first error encountered while copying.

Merge multiple streams into a single one, taking order into account, and each stream will wait for a chunk to enqueue before the next stream can append another chunk. If a stream ends before other ones, the others will be cancelled.

Turns a Reader, r, into an async iterator.

Turns a ReaderSync, r, into an iterator.

Merge multiple streams into a single one, not taking order into account. If a stream ends before other ones, the other will continue adding data, and the finished one will not add any more data.

Create a ReadableStream from any kind of iterable.

Create a ReadableStream<Uint8Array> from from a Deno.Reader.

Read Reader r until EOF (null) and resolve to the content as Uint8Array`.

Synchronously reads Reader r until EOF (null) and returns the content as Uint8Array.

Create a Deno.Reader from an iterable of Uint8Arrays.

Create a Reader from a ReadableStreamDefaultReader.

Convert the generator function into a TransformStream.

Create a WritableStream from a Writer.

Write all the content of the array buffer (arr) to the writer (w).

Synchronously write all the content of the array buffer (arr) to the writer (w).

Create a Writer from a WritableStreamDefaultWriter.

Merge multiple streams into a single one, taking order into account, and each stream will wait for a chunk to enqueue before the next stream can append another chunk. If a stream ends before other ones, the others will continue adding data in order, and the finished one will not add any more data.

Result type returned by of BufReader.readLine().

A parsed path object generated by path.parse() or consumed by path.format().