hughsk/flat

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:steam_locomotive: Flatten/unflatten nested Javascript objects

Stars: 1.8k
Forks: 197
Open beginner issues: 0
Indexed issues: 35

Dominant language: JavaScript
License: BSD-3-Clause
Last GitHub push: Mar 10, 2026
Latest indexed: Sep 17, 2026
Contributing guide: No contributing guide
Code of conduct: No code of conduct
Beginner labels: No beginner labels indexed
PR merge metrics: No merged PRs in 30d

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35 open issues indexed

Object turns into an array after unflattening Open

hughsk/flat#22 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
circular objects blow stack Open

hughsk/flat#24 · 3 comments · 1 reaction · 0 assignees · Indexed Sep 17, 2026
{object: true} should be the default Open

hughsk/flat#42 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
overwrite should allow custom key to store overwritten value in to Open

hughsk/flat#49 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Add flat-stop-condition function Open

hughsk/flat#55 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 17, 2026
ObjectId from mongodb will not correct by using flatten methods Open

hughsk/flat#60 · 7 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Custom delimiter function Open

hughsk/flat#65 · 5 comments · 4 reactions · 0 assignees · Indexed Sep 17, 2026
Blank array not flattened! Open

hughsk/flat#66 · 4 comments · 3 reactions · 0 assignees · Indexed Sep 17, 2026
Flatten does not flatten empty objects or arrays Open

hughsk/flat#74 · 20 comments · 2 reactions · 0 assignees · Indexed Sep 17, 2026
how to exclude the values Open

hughsk/flat#77 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Escape keys with delimiters Open

hughsk/flat#79 · 4 comments · 1 reaction · 0 assignees · Indexed Sep 17, 2026
Flatten arrays to string Open

hughsk/flat#85 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
heap out of memory Open

hughsk/flat#86 · 3 comments · 1 reaction · 0 assignees · Indexed Sep 17, 2026
Flatten starting at a specific level Open

hughsk/flat#89 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Does unflatten enter into infinite recursion on function or array members? Open

hughsk/flat#94 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Possible to allow key's with '.'s in them? Open

hughsk/flat#96 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Who is down for a minDepth option? Open

hughsk/flat#99 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
unflatten object with number as key replaces object with an array of n number length Open

hughsk/flat#103 · 2 comments · 6 reactions · 0 assignees · Indexed Sep 17, 2026
Add transformFirst option to allow modification of key to provide first key capability Open

hughsk/flat#107 · 1 comment · 2 reactions · 0 assignees · Indexed Sep 17, 2026
What option to make difference between object & array Open

hughsk/flat#115 · 1 comment · 5 reactions · 0 assignees · Indexed Sep 17, 2026
Possible to keep parent key Open

hughsk/flat#116 · 3 comments · 1 reaction · 0 assignees · Indexed Sep 17, 2026
Why cats are also flattened? 🐈 Open

hughsk/flat#118 · 1 comment · 18 reactions · 0 assignees · Indexed Sep 17, 2026
maxDepth unflatten Open

hughsk/flat#120 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Unflatten method doesn't work with "toString" key Open

hughsk/flat#127 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Unflatten partial arrays Open

hughsk/flat#130 · 0 comments · 1 reaction · 0 assignees · Indexed Sep 17, 2026
Rename `master` branch to `main` Open

enhancement

hughsk/flat#141 · 0 comments · 8 reactions · 1 assignee · Indexed Sep 17, 2026
[question] how could we define don't flat some specific object by the key? Open

hughsk/flat#152 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Feature request: add ability to prevent modifying certain value in `unflatten` Open

hughsk/flat#160 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Support for cyclic objects Open

hughsk/flat#161 · 0 comments · 1 reaction · 0 assignees · Indexed Sep 17, 2026
Empty objects are ignored by flatten Open

hughsk/flat#177 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Return type of flatten/unflatten Open

bug

hughsk/flat#179 · 6 comments · 1 reaction · 0 assignees · Indexed Sep 17, 2026
Is it possible to maintain array, but not content? Open

hughsk/flat#186 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
`flatten` accepts null/undefined type Open

hughsk/flat#187 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Security: Uncontrolled Recursion DoS in flatten() - CWE-674 (Stack Overflow) Open

hughsk/flat#189 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Unbounded Array Allocation via Numeric Keys in unflatten() Open

hughsk/flat#195 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026

hughsk/flat

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