What's Changed

• fix(List): preserve undefined values when grown past 32 elements by @spokodev / @jdeniau in #2235 (originated from #2230 )

Full Changelog: v5.1.8...v5.1.9

What's Changed

• fix(List): guard oversized bounds in setListBounds. Fixes CVE GHSA-v56q-mh7h-f735
• perf(Map): index large hash-collision buckets for faster lookups. Fixes CVE GHSA-xvcm-6775-5m9r

Full Changelog: v5.1.7...v5.1.8

What's changed

• fix(List): guard oversized bounds in setListBounds. Fixes CVE GHSA-v56q-mh7h-f735
• perf(Map): index large hash-collision buckets for faster lookups. Fixes CVE GHSA-xvcm-6775-5m9r

Full Changelog: v4.3.8...v4.3.9

What's Changed

• fix(Repeat): lastIndexOf returned size instead of size - 1 by @chatman-media in #2227

internal

• Backport tests from 6.x branch by @jdeniau in #2199
• fix(IndexedCollection): has(index) on a lazy Seq of unknown size now checks index existence instead of searching for a value equal to the index by @jdeniau in #2203
• Better type for reduce if not ininitial value is given by @jdeniau in #2205
• Backport test from #2193 by @jdeniau in #2207
• backport tests from 6.x by @jdeniau in #2213
• Firefox link to non-French page by @jdeniau in #2219
• Bump esbuild and @size-limit/preset-small-lib by @dependabot[bot] in #2217
• backport tests from #2210 by @jdeniau in #2214
• Bump shell-quote from 1.8.2 to 1.8.4 by @dependabot[bot] in #2211
• Bump @tootallnate/once from 2.0.0 to 2.0.1 by @dependabot[bot] in #2190
• Bump minimatch from 9.0.5 to 9.0.9 by @dependabot[bot] in #2189
• Bump @codemirror/theme-one-dark from 6.1.2 to 6.1.3 by @dependabot[bot] in #2168
• Bump form-data from 4.0.5 to 4.0.6 by @dependabot[bot] in #2220
• Bump typescript-eslint from 8.33.0 to 8.61.1 by @dependabot[bot] in #2222
• Bump @rollup/plugin-commonjs from 28.0.2 to 29.0.3 by @dependabot[bot] in #2224

New Contributors

• @chatman-media made their first contribution in #2227

Full Changelog: v5.1.6...v5.1.7

What's Changed

• fix(reverseFactory): read reversedSequence.size in __iterator instead of this by @jdeniau in #2196

Internal

• Bump lodash from 4.17.23 to 4.18.1 by @dependabot[bot] in #2184
• Bump form-data from 4.0.0 to 4.0.5 by @dependabot[bot] in #2187
• Bump flatted from 3.3.2 to 3.4.2 by @dependabot[bot] in #2182
• Bump next from 15.5.9 to 15.5.18 by @dependabot[bot] in #2188

Full Changelog: v5.1.5...v5.1.6

Fix Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') in immutable

What's Changed

• Fix Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') in immutable
• Upgrade devtools and use immutable version by @jdeniau in #2158

Full Changelog: v5.1.4...v5.1.5

Fix Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') in immutable

What's Changed

• Migrate some files to TS by @jdeniau in #2125
  • Iterator.ts
  • PairSorting.ts
  • toJS.ts
  • Math.ts
  • Hash.ts
• Extract CollectionHelperMethods and convert to TS by @jdeniau in #2131
• Use npm trusted publishing only to avoid token stealing.

Documentation

• Fix/a11y issues by @lyannel in #2136
• Doc add Map.get signature update by @borracciaBlu in #2138
• fix(doc):minor-issues#2132 by @JayMeDotDot in #2133
• Fix algolia search by @jdeniau in #2135
• Typo in OrderedMap by @jdeniau in #2144

Internal

• chore: Sort all imports and activate eslint import rule by @jdeniau in #2119

New Contributors

• @JayMeDotDot made their first contribution in #2133
• @lyannel made their first contribution in #2136
• @borracciaBlu made their first contribution in #2138

Full Changelog: v5.1.3...v5.1.4

What's Changed

TypeScript

• fix: allow readonly map entry constructor by @septs in #2123

Documentation

There has been a huge amount of changes in the documentation, mainly migrate from an autogenerated documentation from .d.ts file, to a proper documentation in markdown.
The playground has been included on nearly all method examples.
We added a page about browser extensions too: https://immutable-js.com/browser-extension/

• Doc as mdx instead of export from .d.ts file by @jdeniau in #2104
• Remove runkit by @jdeniau in #2107
• only one worker for REPL by @jdeniau in #2108
• Require to import by @jdeniau in #2109
• Add Inheritance cheatsheet section by @jdeniau in #2110
• Optimize SEO (google verification, canonical, noindex) by @jdeniau in #2112
• Upgrade devtools and fix worker by @jdeniau in #2111
• Add documentation about browser extension by @jdeniau in #2115
• fix responsive for width between 680px and 1024px and Add menu in mobile by @jdeniau in #2116
• doc: Better sidebar for v5 navigation by @jdeniau in #2118

Internal

• replace rimraf by a node script by @jdeniau in #2113
• remove warning for tseslint config by @jdeniau in #2114
• Use default tsconfig for tests by @jdeniau in #2055
• add tests for arrCopy by @jdeniau in #2120

New Contributors

• @septs made their first contribution in #2123

Full Changelog: v5.1.2...v5.1.3