WebAssembly/spec

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WebAssembly specification, reference interpreter, and test suite.

Stars: 3.5k
Forks: 539
Open beginner issues: 0
Indexed issues: 73
Avg merge: 2d 1h
Merged PRs (30d): 13

Dominant language: WebAssembly
License: No license data
Last GitHub push: Sep 11, 2026
Latest indexed: Sep 20, 2026
Contributing guide: Contributing guide
Code of conduct: Code of conduct
Beginner labels: No beginner labels indexed

Beginner friendly Everything

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73 open issues indexed

Not enough unreachability/side-effects tests Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

WebAssembly/spec#1644 · 2 comments · Opened Apr 24, 2023
[wasm-js-api-2] js-api Memory.grow requirement cannot be fulfilled via the core specification Open

Difficulty 4/5 3-5 days Newbie friendliness 38/100

WebAssembly/spec#1635 · 1 reaction · Opened Mar 28, 2023
js-api tests for externref Open

Difficulty 4/5 3-5 days Newbie friendliness 30/100

WebAssembly/spec#1620 · 6 comments · Opened Mar 8, 2023
Try to update nodejs in CI Open

Difficulty 2/5 1-3 hours Newbie friendliness 25/100

WebAssembly/spec#1609 · Opened Feb 21, 2023
Feature request: test-local variables in .wast Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

WebAssembly/spec#1586 · 3 comments · Opened Feb 6, 2023
docs: missing mobile friendly theme with darkmode Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

WebAssembly/spec#1573 · 1 comment · Opened Jan 6, 2023
Can we simplify doc navigation? Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

WebAssembly/spec#1558 · 1 comment · 1 reaction · Opened Nov 3, 2022
How can I use the specific interpreter in typescript? Open

Difficulty 4/5 3-5 days Newbie friendliness 15/100

WebAssembly/spec#1557 · 1 comment · Opened Nov 1, 2022
[js-api] Constructor requirements for Error Objects violate ecma262 assertions Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

WebAssembly/spec#1549 · 2 comments · Opened Oct 10, 2022
[js-api] Allow passing non-bigint values to I64 parameters Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

WebAssembly/spec#1541 · Opened Oct 1, 2022
Use Abstract Closure to replace call an Exported Function algorithm Open

editorial wasm-js-api-1

Difficulty 3/5 1-2 days Newbie friendliness 38/100

WebAssembly/spec#1536 · Opened Sep 22, 2022
[web-api] Developer-Facing Display Conventions uses RFC2119 key words in a non-normative section Open

wasm-web-api-1

Difficulty 2/5 1-3 hours Newbie friendliness 35/100

WebAssembly/spec#1527 · Opened Aug 25, 2022
[spec] MathJax and search / c&p on page Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

WebAssembly/spec#1515 · 7 comments · 3 reactions · Opened Aug 4, 2022
[spec] externaddr is meant to be uninterpreted but has a grammar definition Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

WebAssembly/spec#1471 · 1 reaction · Opened May 12, 2022
[bikeshed] Issues with content blocking on Safari Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

WebAssembly/spec#1447 · 3 comments · Opened Apr 20, 2022
[js-api] Can we get a constant for page size? Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

WebAssembly/spec#1433 · 1 comment · Opened Mar 25, 2022
[test] Spec tests and wpt tests are out of sync Open

Difficulty 5/5 Over a week Newbie friendliness 30/100

WebAssembly/spec#1421 · 3 comments · Opened Feb 11, 2022
[js-api] Needs to integrate with CSP Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

WebAssembly/spec#1393 · 14 comments · Opened Nov 9, 2021
[test] Tests for custom sections Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

WebAssembly/spec#1341 · 6 comments · Opened Jul 6, 2021
[web-api] Deprecate cross-origin Module sharing Open

wasm-web-api-1

Difficulty 4/5 3-5 days Newbie friendliness 35/100

WebAssembly/spec#1303 · 14 comments · Opened Apr 2, 2021
[js-api] Integration with the ResizableArrayBuffer and GrowableSharedArrayBuffer proposal Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

WebAssembly/spec#1292 · 47 comments · 1 reaction · Opened Mar 2, 2021
WebAssembly proposals mechanization and writeup Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

WebAssembly/spec#1739 · 1 comment · 7 reactions · Opened Aug 24, 2020
[test] Improve error messages from runner Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

WebAssembly/spec#1118 · Opened Jan 24, 2020

WebAssembly/spec

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