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lodash

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lodash
A modern JavaScript utility library delivering modularity, performance, & extras.

JavaScript · 61273 stars
lodash.com
The Lodash website.

JavaScript · 141 stars

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[Bug]`_.truncate` hangs forever with a zero-length-capable regex `separator` Open

Difficulty 2/5 1-3 hours Newbie friendliness 85/100

lodash/lodash#6274 · 2 comments · Opened Aug 11, 2026
baseUnset: __proto__ guard checks ownership on the root object, not the current node Open

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

lodash/lodash#6263 · 6 comments · Opened Jul 25, 2026
_.cloneDeep does not deep clone Map keys (only values) Open

enhancement

Difficulty 3/5 1-2 days Newbie friendliness 56/100

lodash/lodash#6228 · 2 comments · Opened Jun 3, 2026
cloneDeep strips Temporal.* instances to {} (loses prototype, internal slots, instanceof) Open

enhancement

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

lodash/lodash#6215 · 1 comment · 1 reaction · Opened May 20, 2026
_.invert and _invertBy removes key when _proto_ value Open

bug

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

lodash/lodash#6195 · 6 comments · Opened Apr 12, 2026
cloneDeep wrongly applies <undefined> value to weak array elements; should stay <empty>! Open

bug

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

lodash/lodash#6191 · 2 comments · Opened Apr 9, 2026
Regression test request: prototype-pollution-safe omit/unset paths Open

enhancement

Difficulty 2/5 1-3 hours Newbie friendliness 64/100

lodash/lodash#6183 · 2 comments · 1 reaction · Opened Apr 2, 2026
cloneDeep behaves differently for top-level-functions than for nested ones Open

question

Difficulty 3/5 1-2 days Newbie friendliness 64/100

lodash/lodash#6152 · 1 comment · Opened Mar 30, 2026
clone() doesn't clone own 'hasOwnProperty' field if Object.prototype is frozen Open

bug

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

lodash/lodash#6112 · 2 comments · Opened Feb 19, 2026
Update CVEs for Lodash.* per-method packages Open

notice

lodash/lodash#6106 · 26 comments · 1 reaction · 1 assignee · Opened Feb 12, 2026
`lodash/fp` pollutes native/global `Array.isArray` with `convert` property Open

bug lodash/fp

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

lodash/lodash#6105 · 7 comments · 1 reaction · Opened Feb 6, 2026
OpenJS Best Practices: Website Updates Open

good first issue help wanted

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

lodash/lodash.com#314 · 1 comment · Opened Feb 3, 2026
cloneDeep returns an empty Map when cloning a prop inside a Vue 3 component in Node/jsdom Open

question

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

lodash/lodash#6084 · 1 comment · Opened Jan 20, 2026
Hash anchor navigation fails on page reload Open

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

lodash/lodash.com#303 · Opened Dec 5, 2025
_.range(10, 0) behavior differs from documentation when step not specified Open

documentation

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

lodash/lodash#6057 · 2 comments · Opened Dec 2, 2025
Enhancement: Dark Mode Toggle & “Copy Code” Button Missing in Documentation Pages Open

documentation

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

lodash/lodash.com#293 · 2 comments · Opened Nov 10, 2025
Lodash Forward Roadmap Open

notice

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

lodash/lodash#6040 · 1 comment · 6 reactions · Opened Nov 9, 2025
Backlog: Feature Deprecation Plan Open

STA-2025

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

lodash/lodash#6034 · 1 comment · Opened Oct 28, 2025
Backlog: Adopt Security Best Practices Open

STA-2025

lodash/lodash#6027 · 3 reactions · 1 assignee · Opened Oct 21, 2025
Dark mode in documentation? Open

documentation

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

lodash/lodash.com#288 · 1 comment · 3 reactions · Opened Aug 15, 2025
Document behavior of functions when lengths of input arrays do not match Open

documentation

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

lodash/lodash#6006 · Opened Jul 18, 2025
Run comprehensive vulnerability scan on lodash codebase Open

question

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

lodash/lodash#6005 · 1 reaction · Opened Jul 4, 2025
pullAllWith does not abide by the same contract as `pullAllBy` or `pullAll` Open

question

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

lodash/lodash#6004 · 1 comment · Opened Jul 1, 2025
debounced function not working after Bun sleepSync Open

question

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

lodash/lodash#6003 · 1 comment · Opened Jul 1, 2025
The Future of JavaScript Utility Libraries with es-toolkit Open

question

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

lodash/lodash#5999 · 21 reactions · Opened Jun 19, 2025
sumBy returns boolean instead of number when summing booleans Open

duplicate

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

lodash/lodash#5985 · 2 comments · 1 reaction · Opened Apr 25, 2025
`_.pick` vs TypeScript's `Pick` Open

question

Difficulty 5/5 Over a week Newbie friendliness 28/100

lodash/lodash#5984 · 1 comment · 1 reaction · Opened Apr 25, 2025
Added whitespace Open

question

Difficulty 2/5 1-3 hours Newbie friendliness 67/100

lodash/lodash#5977 · 3 comments · Opened Mar 30, 2025
unescape add & Open

feature request

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

lodash/lodash#5952 · 2 comments · 1 reaction · Opened Dec 26, 2024
Pick returns different object structure from original object with numeric keys Open

question

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

lodash/lodash#5948 · 3 reactions · Opened Dec 9, 2024
_.range & _.rangeRight behavior for step=0 not explained in documentation Open

documentation

Difficulty 1/5 Under an hour Newbie friendliness 78/100

lodash/lodash#5944 · 1 comment · Opened Nov 27, 2024
Docs: Inconsistent wording and referencing in help text Open

documentation

Difficulty 1/5 Under an hour Newbie friendliness 35/100

lodash/lodash#5940 · 1 comment · 2 reactions · Opened Nov 10, 2024
The test suit does not test snakeCase Open

enhancement

Difficulty 1/5 Under an hour Newbie friendliness 55/100

lodash/lodash#5927 · Opened Sep 29, 2024
`cloneArrayBuffer` Outputs Node Deprecation Warning Open

bug

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

lodash/lodash#5923 · 1 comment · 2 reactions · Opened Sep 16, 2024
Tree Shaking with lodash-es in Vite doesnt work Open

question

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

lodash/lodash#5921 · 16 reactions · Opened Sep 10, 2024
`meanBy` returning `NaN` on empty lists is error prone Open

documentation

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

lodash/lodash#5901 · 1 comment · Opened Jul 10, 2024
_.omit evaluates getters for omitted properties Open

bug

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

lodash/lodash#5881 · 3 comments · Opened Jun 10, 2024
_.sortBy and _.orderBy with multiple iteratees treats numbers as strings Open

question

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

lodash/lodash#5872 · 2 comments · Opened May 29, 2024
Unexpected result of _.reduce when Object contains key 'length' with number value Open

bug

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

lodash/lodash#5870 · 2 comments · Opened May 27, 2024
Lodash fails to run in edge environments (Vercel edge, CloudFlare workers) Open

question

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

lodash/lodash#5862 · 1 comment · 4 reactions · Opened May 7, 2024
Can we include the time and space complexity of each functions in the documentation ? Open

documentation

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

lodash/lodash#5859 · 1 comment · 7 reactions · Opened May 3, 2024
When `debounce` or `throttle` options objects have undefined values, those options are unexpectedly set to non-defaults Open

bug

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

lodash/lodash#5857 · 1 comment · 3 reactions · Opened May 1, 2024
_.kebabCase and _.camelCase treat some digits as delimiters but not others Open

question

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

lodash/lodash#5836 · 2 comments · 2 reactions · Opened Mar 29, 2024
Attempt structuredClone in cloneDeep before doing manual clone Open

enhancement

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

lodash/lodash#5833 · 8 comments · 4 reactions · Opened Mar 18, 2024
isBuffer from lodash-es doesn't work Open

bug

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

lodash/lodash#5827 · 1 comment · Opened Mar 4, 2024
Method `sumBy` returns string Open

bug

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

lodash/lodash#5818 · 7 comments · 1 reaction · Opened Feb 13, 2024
Type of parameter object is string in function baseGet(object, path) Open

question

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

lodash/lodash#5814 · Opened Feb 6, 2024
`lodash.merge` drops keys that are symbols Open

enhancement

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

lodash/lodash#5812 · 1 comment · 1 reaction · Opened Feb 1, 2024
Better UI Open

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

lodash/lodash.com#280 · Opened Feb 1, 2024
Strange _.rearg / _.reduce behaviour Open

question

Difficulty 3/5 1-2 days Newbie friendliness 28/100

lodash/lodash#5801 · 1 comment · Opened Jan 11, 2024

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