gwtproject/gwt

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GWT Open Source Project

Stars: 1.6k
Forks: 397
Open beginner issues: 1
Indexed issues: 837
Avg merge: 4d 23h
Merged PRs (30d): 7

Dominant language: Java
License: No license data
Last GitHub push: Sep 19, 2026
Latest indexed: Sep 20, 2026
Contributing guide: Contributing guide
Code of conduct: No code of conduct
Beginner labels: No beginner labels indexed

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837 open issues indexed

Sourcemaps don't include mappings for variables Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

gwtproject/gwt#10404 · Opened Sep 4, 2026
CodeSplitter's not-exclusive CFA computation is quadratic in fragment count Open

Difficulty 4/5 3-5 days Newbie friendliness 52/100

gwtproject/gwt#10395 · 7 comments · Opened Aug 19, 2026
EnumMap RPC deserialization throws an uncaught NullPointerException on crafted input Open

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

gwtproject/gwt#10391 · Opened Aug 11, 2026
Require an issue for each PR and provide issue template(s) Open

Difficulty 2/5 1-2 days Newbie friendliness 64/100

gwtproject/gwt#10387 · 2 comments · Opened Aug 1, 2026
Remove unnecessary `else` late in JS compilation Open

Difficulty 5/5 Over a week Newbie friendliness 48/100

gwtproject/gwt#10382 · Opened Jul 21, 2026
Expand non-breaking JS blocks to hold remaining contents of parent blocks Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

gwtproject/gwt#10381 · Opened Jul 21, 2026
Merge default case with other adjacent fall-through cases Open

Difficulty 3/5 1-2 days Newbie friendliness 58/100

gwtproject/gwt#10376 · 1 comment · Opened Jul 16, 2026
Optimized compile: autoboxed native-@JsType primitive `undefined` leaks past `== null` (2.13 regression) Open

Difficulty 3/5 1-2 days Newbie friendliness 74/100

gwtproject/gwt#10372 · 4 comments · Opened Jul 15, 2026
JDoStatement.unconditionalControlBreak() isn't correct Open

Difficulty 3/5 1-2 days Newbie friendliness 68/100

gwtproject/gwt#10371 · Opened Jul 15, 2026
Update/remove commons-text from maven build Open

Difficulty 3/5 1-2 days Newbie friendliness 55/100

gwtproject/gwt#10370 · 1 comment · Opened Jul 14, 2026
potential data races in CompilationUnitBuilder Open

Difficulty 4/5 3-5 days Newbie friendliness 42/100

gwtproject/gwt#10367 · 2 comments · Opened Jul 11, 2026
Linked output should support strict mode Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

gwtproject/gwt#10362 · 1 reaction · Opened Jul 6, 2026
Inner record with constructor that calls main record constructor causes the compiler to crash Open

Difficulty 4/5 3-5 days Newbie friendliness 55/100

gwtproject/gwt#10352 · 2 comments · Opened Jun 23, 2026
Replace Object.expando and WeakMapping with JS WeakMap Open

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

gwtproject/gwt#10345 · Opened Jun 15, 2026
Java 26 String additions Open

Category-JRE

Difficulty 3/5 1-2 days Newbie friendliness 58/100

gwtproject/gwt#10343 · Opened Jun 9, 2026
Java 26 BigInteger rootn methods Open

Category-JRE

Difficulty 3/5 1-2 days Newbie friendliness 68/100

gwtproject/gwt#10342 · Opened Jun 8, 2026
Java 24/25 java.io.Reader emulation Open

Category-JRE

Difficulty 3/5 1-2 days Newbie friendliness 55/100

gwtproject/gwt#10341 · Opened Jun 8, 2026
Java 25 Math/StrictMath emulation Open

Category-JRE

Difficulty 3/5 1-2 days Newbie friendliness 62/100

gwtproject/gwt#10340 · Opened Jun 8, 2026
Java 25 CharSequence.getChars Open

Category-JRE

Difficulty 3/5 1-2 days Newbie friendliness 45/100

gwtproject/gwt#10339 · Opened Jun 8, 2026
Java 26 Comparator default methods min() and max() Open

Category-JRE

Difficulty 3/5 1-2 days Newbie friendliness 52/100

gwtproject/gwt#10338 · Opened Jun 8, 2026
Optimize unconditional return null to no return or void return Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

gwtproject/gwt#10332 · Opened Jun 4, 2026
Ensure Java null isn't exposed to jsinterop as undefined Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

gwtproject/gwt#10331 · Opened Jun 4, 2026
UIBinder ui:style fails when first omitted Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 48/100

gwtproject/gwt#10329 · 4 comments · Opened Jun 3, 2026
Explore partial inlining Open

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

gwtproject/gwt#10321 · Opened May 21, 2026
Improve Objects.equal specialization Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

gwtproject/gwt#10320 · 2 comments · Opened May 20, 2026
More usage of !! and ! for specific JS types Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

gwtproject/gwt#10311 · Opened Apr 22, 2026
Move fields to locals when appropriate Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

gwtproject/gwt#10310 · Opened Apr 20, 2026
Java 26: Update Guava to 33.6.0+ to avoid reflection warnings caused by JEP 500 Open

Difficulty 2/5 1-3 hours Newbie friendliness 58/100

gwtproject/gwt#10309 · 1 comment · Opened Apr 16, 2026
NoGenerateJsInteropExportsTest isn't run Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

gwtproject/gwt#10301 · Opened Mar 18, 2026
StringReaderTest has three failing tests, isn't part of a suite Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

gwtproject/gwt#10300 · Opened Mar 18, 2026
LayoutPanelTest fails, isn't part of a suite Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

gwtproject/gwt#10299 · Opened Mar 18, 2026
Audit and remove very old Firefox / Gecko UA detection Open

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

gwtproject/gwt#10295 · 2 comments · Opened Mar 10, 2026
Use ES6 features in generated code to simplify it Open

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

gwtproject/gwt#10294 · 8 comments · Opened Mar 6, 2026
String concat can remove some empty strings Open

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

gwtproject/gwt#10288 · 1 comment · Opened Mar 2, 2026
DeadCodeElimination/Simplifier should handle more if/else or conditional patterns Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

gwtproject/gwt#10287 · 1 comment · Opened Feb 28, 2026
i++ and ++i can never be pruned, likely += as well Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

gwtproject/gwt#10286 · Opened Feb 28, 2026
Identify when consecutive branches of if/else have the same contents and merge them Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

gwtproject/gwt#10285 · 1 comment · Opened Feb 28, 2026
JsStaticEval should optimize if/else with returns into return (cond ? then : else) Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

gwtproject/gwt#10284 · Opened Feb 26, 2026
Identify when if/else blocks are the same and rewrite to avoid a copy Open

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

gwtproject/gwt#10283 · 3 comments · Opened Feb 26, 2026
Do not escape end HTML/XML tags in JS by default Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

gwtproject/gwt#10282 · 1 comment · Opened Feb 25, 2026
Handle JSO-to-JSO casts while optimizing the Java AST Open

Category-Compiler

Difficulty 5/5 Over a week Newbie friendliness 35/100

gwtproject/gwt#10276 · Opened Feb 16, 2026
Consolidate JSON jvm library usage Open

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

gwtproject/gwt#10274 · 6 comments · Opened Feb 11, 2026
DevMode Servlet 404 in project created by the webAppCreator Open

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

gwtproject/gwt#10271 · 4 comments · Opened Feb 4, 2026
jreLeakPrevention when running GWTUnitTests with Java 25 Open

Difficulty 3/5 1-2 days Newbie friendliness 48/100

gwtproject/gwt#10268 · Opened Feb 4, 2026
Remove `else` when `if` breaks control flow, flipping first if necessary Open

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

gwtproject/gwt#10262 · Opened Jan 31, 2026
OptimizedOnlyCompilerSuite is never run, fails Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

gwtproject/gwt#10253 · 3 comments · Opened Jan 23, 2026
Remove unnecessary returns in compiled output Open

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

gwtproject/gwt#10248 · 1 comment · Opened Jan 12, 2026
Emulation of Arrays#compareUnsigned Open

Category-JRE

Difficulty 3/5 1-2 days Newbie friendliness 45/100

gwtproject/gwt#10246 · Opened Jan 9, 2026
Experiment with internal annotation `@HasNoSideEffects` Open

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

gwtproject/gwt#10242 · Opened Jan 5, 2026
Branches based on local/param type information can be used for local type tightening Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

gwtproject/gwt#10241 · Opened Jan 4, 2026

gwtproject/gwt

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