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ℹ️ Note

This PR body was truncated due to platform limits.

This PR contains the following updates:

Package	Change	Age	Confidence
i18next (source)	^21.10.0 → ^25.10.10

---

Release Notes

i18next/i18next (i18next)

v25.10.10

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• feat: suppress support notice automatically in production environments (NODE_ENV=production)

v25.10.9

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• feat(types): export SelectorParam<Ns, KPrefix> helper type — a stable, readable alternative to Parameters<TFunction<Ns>>[0] for typing selector function props 2414

v25.10.8

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• fix(types): reorder TFunctionSelector overloads so Parameters<TFunction> resolves to the general selector signature instead of the branded SelectorKey type 2412

v25.10.7

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• feat(types): support typescript 6 to address i18next/react-i18next#1910

v25.10.6

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• feat(types): support typescript 6 to address i18next/react-i18next#1910

v25.10.5

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• feat(types): selector functions as keyPrefix in getFixedT now provide full type-safe key narrowing — the returned t function is scoped to the prefix subtree 2367

v25.10.4

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• feat(types): exists() is now a type guard that narrows the key to SelectorKey, so a validated key can be passed directly to t() 2364

v25.10.3

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• check also for I18NEXT_NO_SUPPORT_NOTICE env variable

v25.10.2

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• feat(types): keyFromSelector is now type-safe — the selector callback is constrained against your resource definitions, catching invalid keys at compile time. Supports optional ns and keyPrefix options for non-default namespace/prefix contexts 2364

v25.10.1

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• fix(types): FilterKeys now correctly excludes base keys that have context variants when the provided context doesn't match any of them (e.g. key some with variant some_me is no longer accessible with context="one")

v25.10.0

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• feat(types): keyFromSelector now returns a branded SelectorKey type that t() accepts directly, enabling pre-computed and reusable translation keys 2364
• feat: support selector syntax for keyPrefix in getFixedT and per-call options 2367
• feat(types): interpolation values are now automatically typed based on built-in format specifiers — {{val, number}} requires number, {{val, datetime}} requires Date, {{name}} requires string, etc. Custom formatters can be typed via interpolationFormatTypeMap in CustomTypeOptions 2378
• fix(types): FilterKeys in selector mode now preserves non-context, non-plural leaf keys when context is provided, fixing incorrect type narrowing when combining returnObjects: true with context 2398

v25.9.0

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• feat(types): selector API now enforces { count: number } when a key resolves to plural forms 2373
• fix(types): string unions with invalid members are now correctly detected as type errors when used as context option 2172

v25.8.20

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• • fix: getFixedT() selector now resolves namespaces against the effective ns rather than the global init options #​2406

v25.8.19

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• fix: selector API namespace resolution regression for single-string ns and primary namespace in array #​2405. Reverts the broad namespace-prefix rewrite from v25.8.15 and replaces it with a targeted fix that only rewrites paths starting with a secondary namespace in a multi-namespace array, matching the type-level contract of GetSource

v25.8.18

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• improve selector api to accept array of selector functions, analogous to array of keys 2404

v25.8.17

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• update deps

v25.8.16

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• fix(types): on() method now correctly returns this instead of void, matching the runtime behavior and enabling proper method chaining in TypeScript

v25.8.15

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• fix: Selector API unable to resolve namespaces #​2402

v25.8.14

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• fix: getCleanedCode now replaces all underscores

v25.8.13

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• improve support notice shown logic

v25.8.12

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• improve support notice shown logic

v25.8.11

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• revert fix: compatibility with moduleResolution bundler (issue 2380) 2381

v25.8.10

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• fix(interpolator): guard null matchedDoubleQuotes in nesting option parsing 2395

v25.8.9

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• fix(interpolator): escape nestingOptionsSeparator in nesting option parsing 2394

v25.8.8

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• types(i18n): add missing toJSON() declaration 2393

v25.8.7

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• avoid crash due to ReferenceError without Intl API 2391

v25.8.6

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• ts: address incomplete type definition for getFixedT() return value 2318

v25.8.5

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• fix: compatibility with moduleResolution bundler (issue 2380) 2381

v25.8.4

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• fix: crashes when backend in backends array has no name property 2386

v25.8.3

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• ts: document option to suppress the support message 2385

v25.8.2

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• option to suppress the support message 2385

v25.8.1

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• fix(types): Selector API - fix Namespace inference for selector ns option 2384

v25.8.0

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• fix: TFunctionReturn fallback 2360

v25.7.4

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• fix: Interpolation breaks when cloning an instance 2376

v25.7.3

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• type definitions for new transDefaultProps option in react-i18next react-i18next: #​1895

v25.7.2

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• fix: Invalid overwrite of default value for overloadTranslationOptionHandler 2374.

v25.7.1

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• TS: remove wrong signature 2372.

v25.7.0

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• Enhance cloneInstance to create a new interpolator if interpolation options are passed in. This will address 2371.

v25.6.3

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• chore: dependency updates 2368

v25.6.2

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• types: export InterpolationMap

v25.6.1

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• fix: createInstance does not exist on an instance #​2366

v25.6.0

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• feat: exists() method now respects returnObjects option - returns false when accessing an object key with returnObjects: false, enabling detection of object vs string keys 2359

  Note: This is a potential behavior change. If you were previously calling exists() with returnObjects: false on object keys, those calls will now return false instead of true. This enables developers to detect whether a key points to an object or string value.

v25.5.3

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• export esm type declaration for keyFromSelector 2356

v25.5.2

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• fix last change => for cjs there is just 1 default export, no named exports, fixes 2348

v25.5.1

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• export keyFromSelector from index.cjs 2347

v25.5.0

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• export keyFromSelector function for testing purposes 2346

v25.4.2

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• fix: enableSelector: true doesn't work with custom keySeparator 2341

v25.4.1

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• fix: KeyPrefix not working with new selector api 2340

v25.4.0

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• add new selector API to improve TypeScript IDE performance 2322
  • To enable it, set enableSelector: true in your configuration options
  • With enableSelector: "optimize", i18next can now handle translation dictionaries of any size, without affecting IDE performance or build times
  • To assist with the migration, we've published the following packages:
    • @​i18next-selector/codemod
    • @​i18next-selector/vite-plugin

v25.3.6

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• improve fix: Ordinals and non-ordinals don't work together 2337

v25.3.5

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• fix: Ordinals and non-ordinals don't work together 2337

v25.3.4

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• remove unnecessary debug logs

v25.3.3

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• fix: Brackets breaking nesting interpolation 2336

v25.3.2

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• fix dir() for non-Intl language codes 2330

v25.3.1

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• warn if legacy interpolation.format function is still used

v25.3.0

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• feat: support formatting function with plural and interpolation 2325
• fix dir() for Latn language codes 2324

v25.2.1

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• streamline fallbackLng option of t call with the init options 2312

v25.2.0

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• introduce cacheInBuiltFormats option to address 2227

v25.1.3

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• Ensure nsSeparator is respected when appendNamespaceToMissingKey is true 2311, fixes 2310

v25.1.2

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• do not mutate t options, fixes 2307

v25.1.1

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• fix options type for parseMissingKeyHandler

v25.1.0

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• feat: parseMissingKeyHandler now takes options as parameter like in missingKeyHandler 2304

v25.0.2

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• fix cloneInstance with forkResourceStore: true addresses 2303

v25.0.1

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• optimize changeLanguage to correctly use getBestMatchFromCodes (string or array) 2299 and improve resolvedLanguage set for non canonical codes

v25.0.0

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This is a potentially breaking release:

• fix multiple changeLanguage call that may have result in wrong order in previous versions 1605 2298
• adapt changeLanguage to always (string or array) use getBestMatchFromCodes 2299
• getBestMatchFromCodes now tries to fallback to language code with same script 2299

v24.2.3

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• Upgrade @​babel/runtime package to version v7.26.10 2293

v24.2.2

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• fix: Interpolation fails with arrays (TypeError) and doesn't work with objects in defaultValue 1829

v24.2.1

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• Standardize null/undefined checks across codebase 2275
• fix(typescript): make TFunction augmentable again 2279, fixes 2278

v24.2.0

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• feat(typescript): Add strictKeyChecks option to enforce checking key existence when defaultValue is used 2274, fixes 2043

v24.1.2

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• optimize fix: Bug Report: Unsafe Behavior in i18n.t Function Leading to Potential Code Execution 2273

v24.1.1

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• fix: Bug Report: Unsafe Behavior in i18n.t Function Leading to Potential Code Execution 2273

v24.1.0

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• try to address 2270 by cloning the store data 2271

v24.0.5

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• remove extra log for 2268

v24.0.4

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• simplify fix: incorrect locale detected 2268

v24.0.3

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• fix: incorrect locale detected 2268
• fix: Intl.getCanonicalLocales throws with custom regions 2267

v24.0.2

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• if no Intl api, log error and use dummy rule

v24.0.1

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• early return and log error, if no Intl api

v24.0.0

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This is a major breaking release:

• remove support for older environments
• remove old i18next JSON formats
  • To convert your existing v3 translations to the v4 format, have a look at i18next-v4-format-converter or this web tool.
• remove support for compatibility to v1 API
• Intl API is mandatory now and will not fallback anymore
• possible compatibility layer for older formats: test/compatibility/v4/v4Compatibility.js
• rename initImmediate to initAsync
• fallback to dev language if plural rule not found
• Dropped support for Node.js < v14
• remove TypeScript v4 support. TypeScript v5 is now an optional peer dependency
• addresses
  • 2244
  • 2184
  • 2213
  • 2206
  • 2208
  • 2148
  • 2254

➡️ check out the migration guide

v23.16.8

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• fix(plural): Create cache entry for PluralRules created as part of the fallback flow 2256

v23.16.7

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• if plural rule is not found, try to search with language only code 2252

v23.16.6

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• fix: Small typo in the type definitions 2250

v23.16.5

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• fix extractFromKey for use cases like this

v23.16.4

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• revert formatter change 2247 because of caching not working anymore

v23.16.3

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• fix utils imports for Deno

v23.16.2

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• perf(size): Adds a isString utility 2248

v23.16.1

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• perf: Optimize size of Formatter 2247

v23.16.0

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• use Intl.getCanonicalLocales function if available to format language code, like suggested in 2244

v23.15.2

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• fix(types): make context related keys detection stricter 2243 fixes 2242

v23.15.1

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• types(TFunction): make return not inferrable and use defaultValue as return when provided 2234

v23.15.0

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• support unescaped variables in TypeScript 2233

v23.14.0

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• If backend errors with retry flag, set internal state to 0, so reloadingResources should work 147

v23.13.0

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• Cache output of getRule to optimize performance 2226

v23.12.7

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• revert last optimization to address 2227

v23.12.6

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• remove console.log statement 2227

v23.12.5

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• try to optimize last fix for 2227

v23.12.4

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• try to address 2227 without the removal of cached formatter for in-built formatters

v23.12.3

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• fix: Using a comma in a formatter parameter 2225

v23.12.2

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• fix: Nested translation resolution between languages uses the fallback language for nested translations 2216 by preserving issue fix "lng is undefined when formatter used in $t( )" 1938

v23.12.1

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• Use explicit imports for utils 2212

v23.12.0

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• feat: Add posibility to override keyPrefix for certain translation. 2211

v23.11.5

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• perf: use Array.isArray() 2193
• perf: trim keys once 2194

v23.11.4

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• perf(interpolator): use object deconstruction 2181

v23.11.3

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• fix: Unsupported language is automatically added to preload option 2178

v23.11.2

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• allow defaultValue in nested translation 2174

v23.11.1

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• types: remove const from ParseKeys Context type parameter and disable skipLibCheck 2169

v23.11.0

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• Fix typing performance regression 2166

v23.10.1

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• optimize getBestMatchFromCodes for i18next/i18next-browser-languageDetector#281

v23.10.0

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• Add 'isInitializing' property so we're able to detect init() was already called 2141

v23.9.0

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• types: support nested keys in InterpolationMap 2140 fixes 2014

v23.8.3

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• prevent resource mutation when using addResourceBundle 2081

v23.8.2

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• optimize addResources to address 2130

v23.8.1

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• types: support stricter typechecking for returnEmptyString and returnNull 2129

v23.8.0

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• improve performance by reducing array slices and RegExp recreation 2128

v23.7.20

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• optimize: consistent _zero special handling also for defaultValue_zero 2124
• intl plural rule for dev is now en (consistent with v3 compatibility)

v23.7.19

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• fix: consistent _zero special handling also for defaultValue_zero 2124

v23.7.18

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• types: support readonly defaultNS 2123

v23.7.17

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• types: fix support for defaultNS as array (fixes 2118) 2121
• types: fix typo in CustomInstanceExtensions 2122

v23.7.16

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• fix: Use Typescript 5 types with Typescript 5+ 2108
  • Hint: If you're using TypeScript 4 and you navigate to the type definitions in your code editor, it might be you will see the TypeScript 5 types, but the TS compiler should use the correct types.

v23.7.15

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• types: simplifies types for array access and fixes 2103

v23.7.14

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• types: fix types for array access

v23.7.13

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• types: optimise ParseTReturn 2095

v23.7.12

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• types: fix for older ts version (context validation only for TS 5)

v23.7.11

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• types: fix for older ts versions 2090

v23.7.10

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• types: initializedStoreOnce and initializedLanguageOnce 2089

v23.7.9

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• types: fix FormatFunction should allow any value inside options parameter

v23.7.8

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• prevent cosmetic SyntaxError because of non catched error variable

v23.7.7

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• optimize TypeScript V4 export

v23.7.6

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• types: CustomInstanceExtenstions

v23.7.5

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• fix types export for TypeScript v4 in combination with react-i18next

v23.7.4

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• fix for TypeScript v4 in combination with react-i18next

v23.7.3

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• fix: consider importing '*.js'

v23.7.2

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• optimize: consistent _zero special handling also for defaultValue_zero 2124
• intl plural rule for dev is now en (consistent with v3 compatibility)

v23.7.1

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• fix: consistent _zero special handling also for defaultValue_zero 2124

v23.7.0

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• fix: separate cjs and mjs typings 2010
• fix: consider importing './typescript/t.js' 2048

v23.6.0

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• add interpolation data to response if returnDetails is true 2053

v23.5.1

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• types: use unknown to better infer types on nested t functions also for older typescript version 2032

v23.5.0

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• types: use unknown to better infer types on nested t functions 2018

v23.4.9

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• fix: preload languages also on cimode, if configured also as fallbackLng

v23.4.8

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• fix: preload languages also on cimode, if configured

v23.4.7

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• preload languages also on cimode, if configured

v23.4.6

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• pass correct language for custom i18nFormat

v23.4.5

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• types: named export for FlatNamespace

v23.4.4

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• types: add customisation of contextSeparator also on v4 t types 2019

v23.4.3

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• types: add customisation of contextSeparator 2017

v23.4.2

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• types: export some types for next-i18next

v23.4.1

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• types: fix typescript imports

v23.4.0

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• types: Support const modifier for options and key 2007
• types: Support context 2006

v23.3.0

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• types: Fix performance issue that affects flat object with multiple (thousands) keys 2004

v23.2.11

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• types: Fix $TFunctionBrand 1997

v23.2.10

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• types: emit function can have additional arguments 1993

v23.2.9

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• types: Add brand to TFunction type so different namespaces' TFunctions are not treated as compatible 1994

v23.2.8

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• types for hasLoadedNamespace

v23.2.7

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• fix utils import (for Deno)

v23.2.6

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• Re-allow unknown keys, when a defaultValue is provided 1867

v23.2.5

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• Clean language code before passing to formatters 1988

v23.2.3

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• types: Optimize logic for fallback ns 1984

v23.2.2

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• types: try to fix fallbackNS type handling also for older TS version 1981

v23.2.1

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• types: Fix $TFunctionBrand 1997

v23.2.0

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• types: add fallbackNS type handling 1975

v23.1.0

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• cloneInstance: introduce forkResourceStore 1974
• types: default argument values for ParseKeys type

v23.0.2

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• refactor: static createInstance for wider browser support 1973

v23.0.1

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• types: export ParseKeys

v23.0.0

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This is a major breaking release:

• redesigned TypeScript types 1911

• removed setDebug function in the logger: 1954

• changed returnNull default to false 1885

• drop support for old browsers and Node.js < v12 1948

• ordinal plural keys are now prefixed with _ordinal to help translators (non-breaking, because of fallback) 1945

➡️ check out the migration guide

v22.5.1

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• ResourceStore addResource: offer possibility to pass keySeparator via options 1968

v22.5.0

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• extend hasLoadedNamespace function options to pass optional lng to optimize server side usage of react-i18next

v22.4.15

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• fix: function t() passed options alteration 1947

v22.4.14

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• fix: pass lng to format function used in nesting 1938

v22.4.13

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• fix: deepFind as fallback for interpolation 1930

v22.4.12

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• fix:

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