Issues

• Component validation doesn't handle type ascription of resource exports correctly

  component-model
  bytecodealliance/wasm-tools#2731 · Filter by author alexcrichton opened on Oct 1, 2026

• Consider adding more type-checking to wasm-tools component link

  component-model
  bytecodealliance/wasm-tools#2591 · Filter by author alexcrichton opened on Aug 10, 2026

• wit: Comments in deps don't round-trip through binary encoding

  witwit-parser
  bytecodealliance/wasm-tools#2571 · Filter by author lann opened on Jul 17, 2026
  1

• Finish implementation of versionsuffix and cm-canon-names

  bytecodealliance/wasm-tools#2556 · Filter by author alexcrichton opened on Jul 1, 2026

• wasm-wave: Pretty printing

  bytecodealliance/wasm-tools#2543 · Filter by author tv42 opened on Jun 19, 2026

• Add validaton for 64bit component model

  bytecodealliance/wasm-tools#2500 · Filter by author michael-weigelt opened on Apr 20, 2026

• Deduplicate "is function type A a subtype of function type B"

  wasmparser
  bytecodealliance/wasm-tools#2480 · Filter by author alexcrichton opened on Apr 3, 2026

• Parse and validate text format together

  bytecodealliance/wasm-tools#2438 · Filter by author eqrion opened on Feb 6, 2026
  1

• wasm-encoder relocation data generation

  bytecodealliance/wasm-tools#2405 · Filter by author daxpedda opened on Dec 17, 2025
  2

• Add support for nested namespaces and packages

  bytecodealliance/wasm-tools#2393 · Filter by author ouillie opened on Nov 28, 2025
  1

• wasm-tools in wasm & JS

  bytecodealliance/wasm-tools#2374 · Filter by author vados-cosmonic opened on Nov 12, 2025
  2

• Consider replacing the ValType enum with an opaque 32-bit integer.

  wasmparser
  bytecodealliance/wasm-tools#2370 · Filter by author alexcrichton opened on Nov 7, 2025

• Feature Request: Add the ability to add user defined Custom Sections to wasm modules.

  bytecodealliance/wasm-tools#2351 · Filter by author davidmdm opened on Oct 13, 2025

• Missing tests for some component new flags

  bytecodealliance/wasm-tools#2338 · Filter by author catamorphism opened on Oct 7, 2025
  1

• wit-dylib: Generate helper functions during lifting/lowering

  wit-dylib
  bytecodealliance/wasm-tools#2308 · Filter by author alexcrichton opened on Sep 17, 2025

• wit-parser: Doc comments on interface imports/export world items are discarded

  wit
  bytecodealliance/wasm-tools#2294 · Filter by author lann opened on Aug 29, 2025

• Suppot lists of WITs without requiring topological ordering

  wit
  bytecodealliance/wasm-tools#2292 · Filter by author sunfishcode opened on Aug 26, 2025

• Extend wasm-tools component new to support preexisting wasip1 modules without cabi_realloc

  bytecodealliance/wasm-tools#2289 · Filter by author chenyan2002 opened on Aug 26, 2025
  10

• Support parsing of target_features section

  bytecodealliance/wasm-tools#2284 · Filter by author StackOverflowExcept1on opened on Aug 16, 2025

• package hello:wasm/subpackage@1.0.0 doesn't work

  bytecodealliance/wasm-tools#2277 · Filter by author jcbhmr opened on Aug 12, 2025
  2

• Allow component targets to validate a binary in a semver-compatible manner

  wit
  bytecodealliance/wasm-tools#2220 · Filter by author julienvincent opened on Jun 5, 2025
  3

• Unstable error variant in unstable function leads to compilation error

  wit
  bytecodealliance/wasm-tools#2210 · Filter by author moldhouse opened on May 28, 2025
  3

• wasm-component generate components for modules with host function imports

  bytecodealliance/wasm-tools#2185 · Filter by author CharlieTap opened on May 9, 2025
  5

• Impossible to implement VisitOperator::simd_visitor generically

  bytecodealliance/wasm-tools#2181 · Filter by author nagisa opened on May 7, 2025
  5

• wasmparser: 15-30% performance regressions from v228 -> v229

  bytecodealliance/wasm-tools#2180 · Filter by author Robbepop opened on May 6, 2025
  22