babel/minify

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:scissors: An ES6+ aware minifier based on the Babel toolchain (beta)

Stars: 4.4k
Forks: 217
Open beginner issues: 0
Indexed issues: 165

Dominant language: JavaScript
License: MIT
Last GitHub push: May 6, 2022
Latest indexed: Sep 14, 2026
Contributing guide: Contributing guide
Code of conduct: Code of conduct
Beginner labels: help wanted good first issue
PR merge metrics: No merged PRs in 30d

Open All

165 open issues indexed

More optimizations Open

enhancement

babel/minify#25 · 26 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Sub-optimal boolean returns Open

enhancement

babel/minify#29 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Re-enable part of minify-simplify Open

babel bug

babel/minify#35 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Multiple passes? Open

enhancement

babel/minify#61 · 6 comments · 2 reactions · 0 assignees · Indexed Sep 14, 2026
Experiment with component folding Open

enhancement

babel/minify#62 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Add benchmarks that show transpilation + minification times Open

help wanted

babel/minify#95 · 2 comments · 8 reactions · 0 assignees · Indexed Sep 14, 2026
Thought: Module Inlining? Open

enhancement

babel/minify#100 · 5 comments · 4 reactions · 0 assignees · Indexed Sep 14, 2026
Should babili also enable all the finalized spec parser features? Open

babel/minify#133 · 6 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Versioning of plugins vs CLI Open

babel/minify#139 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[DCE] Strip blocks that have no semantic meaning Open

enhancement

babel/minify#142 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Smart constant rewriting Open

enhancement

babel/minify#156 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Unneeded mangle on destructed function parameters used as shorthands in the function body Open

enhancement

babel/minify#175 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Certain constant expressions don't get simplified or removed Open

discussion enhancement

babel/minify#177 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Add support for annotations improving minification and rewriting Open

discussion enhancement

babel/minify#178 · 9 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Incorrectly transformed `this` → `void 0` in global scope Open

bug ecma262

babel/minify#190 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Incorrect inlining within `with` statement Open

bug ecma262

babel/minify#193 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Dead code analysis treats all top level vars as const and not global scope varibales that are subject to change Open

babel/minify#203 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
`undefined` as an unused value could be stripped Open

enhancement

babel/minify#251 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Improve replace + DCE w. surrounding blocks Open

enhancement

babel/minify#287 · 6 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Combine consecutive assignments to the same value Open

enhancement Tag: New Feature

babel/minify#288 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
`path.remove` sometimes throws Open

babel bug

babel/minify#300 · 6 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Perform SSA -type of optimizations Open

enhancement

babel/minify#313 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
JavaScript heap out of memory Open

babel/minify#332 · 40 comments · 25 reactions · 0 assignees · Indexed Sep 14, 2026
Toggling babili plugins in REPL Open

help wanted

babel/minify#334 · 8 comments · 1 reaction · 0 assignees · Indexed Sep 14, 2026
[feature request] Convert functions to arrow functions Open

enhancement

babel/minify#354 · 8 comments · 1 reaction · 0 assignees · Indexed Sep 14, 2026
Flow annotation is incorrectly removed? Open

bug

babel/minify#357 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Support specifying which propertie names to mangle Open

enhancement

babel/minify#358 · 3 comments · 6 reactions · 0 assignees · Indexed Sep 14, 2026
inline-environment-variables should take an object to supplement process.env Open

bug

babel/minify#360 · 0 comments · 1 reaction · 0 assignees · Indexed Sep 14, 2026
SourceMap URL not appended when Babili is executed from JS API Open

help wanted

babel/minify#362 · 0 comments · 1 reaction · 0 assignees · Indexed Sep 14, 2026
[Question] How does babili compare to Babel + UgligyJS w/ ES2015? Open

question Tag: Chore

babel/minify#364 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Save 1 char for arrow functions without arguments Open

enhancement

babel/minify#368 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Allow for exceptions in string concat inlining Open

babel enhancement

babel/minify#382 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
DCE TopLevel Open

enhancement

babel/minify#392 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Flowparser is broken Open

bug

babel/minify#406 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Simplify after DCE (Multiple Passes) Open

enhancement

babel/minify#422 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Feature Request: Added max line length Open

enhancement

babel/minify#426 · 8 comments · 2 reactions · 0 assignees · Indexed Sep 14, 2026
Integration with preset-env - compile target option Open

enhancement

babel/minify#428 · 1 comment · 2 reactions · 0 assignees · Indexed Sep 14, 2026
Options validation for preset Open

enhancement good first issue help wanted

babel/minify#436 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Simplify expression call inside falling through case Open

enhancement

babel/minify#448 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Unneeded parenthesis insertion Open

babel enhancement

babel/minify#451 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Labels should be minified Open

enhancement

babel/minify#468 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Mangling exports Open

enhancement

babel/minify#479 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Temp Variable Inlining Open

enhancement

babel/minify#498 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Inline native methods of JS types Open

enhancement has PR

babel/minify#501 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Source map is off by one line Open

help wanted

babel/minify#509 · 2 comments · 2 reactions · 0 assignees · Indexed Sep 14, 2026
Remove Symbol description Open

enhancement

babel/minify#512 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
babili to transform entire bundle Open

help wanted

babel/minify#514 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Use Prepack's evaluator for constant evaluation Open

enhancement

babel/minify#519 · 3 comments · 4 reactions · 0 assignees · Indexed Sep 14, 2026
#__PURE__ Open

enhancement

babel/minify#520 · 2 comments · 3 reactions · 0 assignees · Indexed Sep 14, 2026
--input-source-map not respected Open

help wanted

babel/minify#561 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026

babel/minify

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