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Unecessary boxing in Sink.writeString/commonWriteUtf8

performance issue

Status: Open.

#520 In Kotlin/kotlinx-io;

· dronda-t opened on Aug 6, 2026

Source.readString() bypasses JVM String decoding intrinsics; readString(charset) is 3-4x faster for UTF-8

Status: Open.

#515 In Kotlin/kotlinx-io;

· inemtsev opened on Jul 11, 2026

Consider Random.nextByteString(count: Long)

API improvement

enhancement

Status: Open.

#510 In Kotlin/kotlinx-io;

· JakeWharton opened on Jun 4, 2026

Add Path.div operator fun

enhancement

fs

Status: Open.

#505 In Kotlin/kotlinx-io;

· hfhbd opened on Apr 21, 2026

Consider ByteString.equals(other: ByteString, constantTime: Boolean) overload

API improvement

Status: Open.

#503 In Kotlin/kotlinx-io;

· JakeWharton opened on Apr 10, 2026

Make ByteString serializable as a ByteArray

enhancement

Status: Open.

#502 In Kotlin/kotlinx-io;

· Laxystem opened on Mar 2, 2026

Move ByteChannel to kotlinx io

Status: Open.

#501 In Kotlin/kotlinx-io;

· GazimSoliev opened on Feb 26, 2026

kotlin.js.JsException: Cannot read properties of undefined (reading 'default')

Status: Open.

#497 In Kotlin/kotlinx-io;

· mahramane opened on Jan 28, 2026

Sink should implement Appendable

API improvement

encodings

enhancement

Status: Open.

#495 In Kotlin/kotlinx-io;

· gandrewstone opened on Jan 15, 2026

Open files with O_CLOEXEC flag

fs

Status: Open.

#493 In Kotlin/kotlinx-io;

· fzhinkin opened on Jan 8, 2026

Pipeline Transform concept

Status: Open.

#486 In Kotlin/kotlinx-io;

· wkornewald opened on Dec 9, 2025

WASI FS does not work with latest NodeJS versions

bug

fs

Status: Open.

#484 In Kotlin/kotlinx-io;

· fzhinkin opened on Nov 24, 2025