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base64

Fast, robust Base64 encoder/decoder for Buffers in C++. Ignores whitespace. Detects corruption and truncation. Ships with extensive tests, a fuzz test and a benchmark.

crypto-async

Fast, reliable cipher, hash and hmac methods executed in Node's threadpool for multi-core throughput.

deduplication

Fast multi-threaded content-dependent chunking deduplication for Buffers in C++ with a reference implementation in Javascript. Ships with extensive tests, a fuzz test and a benchmark.

direct-io

Direct IO helpers for block devices and regular files on FreeBSD, Linux, macOS and Windows.

hash-table

Fast, reliable cuckoo hash table for Node.js.

mime

Fast, robust, standards-compliant MIME decoder. Ships with extensive tests and fuzz tests.

opened

Check if a file is open in another application on Windows, macOS and Linux.

pure

A static analysis file format checker.

queue

Process thousands of asynchronous or synchronous jobs, concurrently or sequentially, safely and efficiently, without creating thousands of closures.

quorum

quoted-printable

Fast, robust RFC 2045 (Quoted-Printable) and RFC 2047 (Q-Encoding) encoder/decoder for Buffers in pure Javascript with an optional C++ binding. Avoids intermediary string allocations and regular expressions. Reduces branching through the use of lookup tables.

reed-solomon

Fast, reliable Reed-Solomon erasure coding as a native addon for Node.js.

utimes

Change the birth time (`btime`), modified time (`mtime`) and/or access time (`atime`) of a file on Windows, macOS and Linux.

zip

Robust ZIP decoder with defenses against dangerous compression ratios, spec deviations, malicious archive signatures, mismatching local and central directory headers, ambiguous UTF-8 filenames, directory and symlink traversals, invalid MS-DOS dates, overlapping headers, overflow, underflow, sparseness, accidental buffer bleeds etc.