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lebab

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lebab
Turn your ES5 code into readable ES6. Lebab does the opposite of what Babel does.

JavaScript · 5635 stars

Beginner friendly Everything

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JS.ORG CLEANUP Open

Difficulty 3/5 1-2 days Newbie friendliness 20/100

lebab/lebab#368 · Opened Jun 7, 2025
Create fields of members without dependencies Open

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

lebab/lebab#359 · 1 comment · Opened Apr 30, 2024
Prototype with intermediary not converted to class Open

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

lebab/lebab#358 · 1 comment · Opened Apr 30, 2024
var function to class Open

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

lebab/lebab#356 · 10 comments · Opened Jan 17, 2024
`recast` with `espree` failed on `new.target` Open

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

lebab/lebab#352 · 17 comments · Opened Nov 26, 2023
`var to let/const` with empty destructuring Open

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

lebab/lebab#350 · 5 comments · Opened Oct 1, 2023
Support apply calls for class extending Open

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

lebab/lebab#341 · Opened May 19, 2023
Add spread operator! Open

enhancement

Difficulty 3/5 1-2 days Newbie friendliness 42/100

lebab/lebab#331 · 3 comments · Opened Feb 12, 2022
class transform oversees super.method() transformation Open

bug

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

lebab/lebab#320 · Opened Mar 30, 2021
transform commonjs: show warning on import/export of reserved keyword Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 42/100

lebab/lebab#313 · 1 comment · Opened Sep 15, 2020
Support static fields in class transform Open

enhancement

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

lebab/lebab#291 · 3 comments · Opened Apr 27, 2019
Convert field initializers in constructor to class fields Open

enhancement

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

lebab/lebab#288 · 5 comments · Opened Mar 26, 2019
[class] remove `this instanceof itself` checks Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 42/100

lebab/lebab#281 · 3 comments · Opened Oct 22, 2018
Allow --replace with multiple input files Open

enhancement

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

lebab/lebab#277 · 1 reaction · Opened Sep 7, 2018
new function to class constructor Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 42/100

lebab/lebab#266 · 2 comments · Opened Feb 13, 2018
support for object.assign() inheritance Open

enhancement

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

lebab/lebab#263 · Opened Dec 19, 2017
issue with es6 classes Open

bug

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

lebab/lebab#260 · 1 comment · Opened Sep 30, 2017
SyntaxError: Identifier 'word' has already been declared Open

blocked externally bug

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

lebab/lebab#235 · 5 comments · Opened Apr 21, 2017
Unsupported node type 'ExportNamedDeclaration' Open

bug

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

lebab/lebab#226 · 1 comment · Opened Mar 28, 2017
Class transform allows referencing classes before they are defined Open

bug

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

lebab/lebab#225 · 1 comment · Opened Mar 28, 2017
Named exports get imported using a default import (which doesn't work) Open

bug

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

lebab/lebab#215 · 4 comments · Opened Jan 21, 2017
`multi-var` transform conflicts with `let` transform Open

bug

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

lebab/lebab#205 · 5 comments · Opened Jan 5, 2017
Convert Promise to async function Open

enhancement

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

lebab/lebab#202 · 14 comments · 8 reactions · Opened Dec 29, 2016
destruct-param conflicts with variables introduced by itself Open

bug

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

lebab/lebab#200 · 2 reactions · Opened Dec 14, 2016
Detect use of `Array.prototype.slice` in `arg-rest` transform Open

enhancement

Difficulty 3/5 1-2 days Newbie friendliness 42/100

lebab/lebab#191 · 1 comment · Opened Oct 15, 2016
Transform forEach loops with if to forEach with a filter Open

enhancement

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

lebab/lebab#190 · 2 comments · Opened Oct 11, 2016
Proper handling of super() call semantics Open

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

lebab/lebab#186 · 2 comments · Opened Sep 29, 2016
Transform more for loops to for-of by auto-generating loop variable name Open

enhancement

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

lebab/lebab#169 · 2 reactions · Opened Aug 19, 2016
Let transform breaks when function closes over variables declared after function is called Open

bug

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

lebab/lebab#168 · Opened Aug 19, 2016
Class transform does not recognize namespacing Open

enhancement

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

lebab/lebab#146 · 4 comments · Opened Jul 7, 2016
vars in for loop declarations should be declared in upper-scope. Open

bug

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

lebab/lebab#145 · 6 comments · Opened Jul 4, 2016
Rewriting Lebab as a Babel transformer? Open

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

lebab/lebab#138 · 65 comments · 8 reactions · Opened Jun 11, 2016
Duplicate variable declarations with destructuring are partially converted to let/const Open

bug

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

lebab/lebab#131 · Opened Jun 5, 2016
Method shorthands should allow named function expressions Open

enhancement

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

lebab/lebab#127 · 1 comment · Opened May 20, 2016
Class transform does not keep comments Open

bug

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

lebab/lebab#118 · 6 comments · Opened Apr 16, 2016
TemplateString transform ruins indentation of multi-line strings Open

bug

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

lebab/lebab#88 · 1 comment · Opened Feb 5, 2016

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