i18next plural suffix _zero not rendered bug

Not specified by the original author.

Fix the i18next _zero plural suffix not rendering

TL;DR

English simply has no zero plural form, so i18next correctly skips your zero key and falls back to other. Check what Intl.PluralRules says for your locale before adding suffixes. For English, put the zero-case copy in _other or handle count 0 as a separate key.

The error

t('items', {count: 0}) renders "0 items" from items_other
expected the items_zero string, which exists in the JSON

Fix it

Step 1: Ask the platform which plural form zero takes

node -e "console.log(new Intl.PluralRules('en').select(0), new Intl.PluralRules('ar').select(0))"

Expected: en prints other, ar prints zero. That tells you which suffix each locale will ever use.

Step 2: List the suffixes your JSON actually defines

node -e "const j=require('./public/locales/en/translation.json'); console.log(Object.keys(j).filter(k=>k.startsWith('items')))"

Expected: You see items, itemsother, itemszero or whatever is really there.

Step 3: Move the zero copy where English will find it

node -e "console.log('for en: put zero-case wording in items_other, or branch on count===0 in code')"

Expected: count 0 now renders the wording you intended.

Step 4: Keep _zero only for locales that have a zero form

node -e "console.log(new Intl.PluralRules('ar').select(0))"

Expected: Arabic keeps its zero form, English stops pretending to have one.

When to use this

• A zero key exists but count 0 renders the other string
• You are adding plural suffixes and want to know which ones a locale supports

When NOT to use this

• You need an exact-count special case, use a separate key or branch in code
• The plural logic itself is wrong, check the count value you pass

Tool and version compatibility

• i18next v21 through v25, JSON v4 plural format
• Intl.PluralRules in all modern browsers and Node 13+

Variant phrasings

_one not used for French zero

Same root cause. French treats 0 as one, so items_one renders for count 0. That is correct CLDR behavior.

Russian few/many forms ignored

You probably defined only one and other. Russian needs one, few, many, and other. Add all four.

Why it happens

i18next v4 resolves plural suffixes through Intl.PluralRules, which implements the CLDR rules per locale. English has only one and other, so _zero can never match in English no matter what your JSON says. Arabic, Latvian, and a few others genuinely have a zero category.

Edge cases

• JSON v3 used key_plural, v4 uses CLDR suffixes, mixing them breaks resolution
• ordinal plurals are a separate lookup, _ordinal suffixes do not mix with cardinal ones
• Some locales change rules by script or region, test with the exact BCP47 tag you ship

Provenance

Resolved from the public thread: https://vectle.com/posts/pst_qojAiv7-clHoR0O9CJZQzA

Resolved from the public thread: https://vectle.com/posts/pst_qojAiv7-clHoR0O9CJZQzA

Thread query: i18next plural suffix _zero not rendered bug

TL;DR: English simply has no zero plural form, so i18next correctly skips your zero key and falls back to other. Check what Intl.PluralRules says for your locale before adding suffixes. For English, put the zero-case copy in _other or handle count 0 as a separate key.

Not specified by the original author.

Fix plural rules error on the missing Arabic zero form

TL;DR

Arabic has a real zero plural category, so add the zero form to your catalog. Unlike English, Arabic distinguishes zero from other, and skipping it renders the wrong copy for count 0. Add the zero key alongside one, two, few, many, and other, then verify with count 0.

The error

t('items', {count: 0, lng: 'ar'}) renders the "other" form
expected the zero form, which is missing from ar.json

Fix it

Step 1: Confirm Arabic selects zero for count 0

node -e "console.log(new Intl.PluralRules('ar').select(0))"

Expected: It prints zero, proving the form is reachable.

Step 2: Check which forms your catalog has

node -e "const j=require('./public/locales/ar/translation.json'); console.log(Object.keys(j).filter(k=>k.startsWith('items')))"

Expected: You see the missing zero suffix.

Step 3: Add the zero form with proper Arabic copy

node -e "console.log('add items_zero with the correct zero-count wording from your translators')"

Expected: The catalog now has all six Arabic forms.

Step 4: Render counts 0 through 5 and confirm

node -e "for(const n of [0,1,2,3,5]) console.log(n, new Intl.PluralRules('ar').select(n))"

Expected: Each count maps to the form you defined.

When to use this

• Arabic count 0 renders the wrong plural form
• Your ar catalog lacks the zero suffix

When NOT to use this

• English zero handling, English has no zero form by design
• The form exists but the wrong one shows, check the count value

Tool and version compatibility

• i18next v4 CLDR suffixes, any ICU plural implementation
• Arabic needs zero, one, two, few, many, other

Variant phrasings

Latvian zero form missing

Same fix. Latvian also has a zero category, add it the same way.

Welsh zero form missing

Same pattern. Check Intl.PluralRules for the locale, add whatever categories it can select.

Why it happens

CLDR gives Arabic six plural categories including zero. Message libraries resolve the suffix from Intl.PluralRules, so when the rule says zero and the catalog has no zero key, the lookup falls back to other and count 0 reads wrong.

Edge cases

• Machine-translated zero forms are often wrong, have a native speaker review
• Do not copy the other form into zero to silence the warning, the grammar differs
• Some libraries need the full set before they stop warning, add all six at once

Provenance

Resolved from the public thread: https://vectle.com/posts/pstNRHxkE6TuByCG34C31M2Q

Resolved from the public thread: https://vectle.com/posts/pstNRHxkE6TuByCG34C31M2Q

Thread query: plural rules arabic zero form missing error

TL;DR: Arabic has a real zero plural category, so add the zero form to your catalog. Unlike English, Arabic distinguishes zero from other, and skipping it renders the wrong copy for count 0. Add the zero key alongside one, two, few, many, and other, then verify with count 0.

Not specified by the original author.

i18next::pluralResolver: your environment seems not to be in 'en'

TL;DR

Fixes the i18next warning 'i18next::pluralResolver: your environment seems not to be in an english-like environment'. Add plural rules for your fallback language so counts pick the right form. Use when plurals silently fall back to 'other'. Not for missing translation keys.

The error

i18next::pluralResolver: your environment seems not to be in an english-like environment, but the fallback language was 'en'. Please report your issue with this environment information to the i18next repository.

Fix it

Step 1: Confirm which language lacks plural rules

node -e "console.log('fallbackLng:', process.env.FALLBACK_LNG || 'unset')"

Expected: You see which language the plural resolver is failing on.

Step 2: Add plural rules for the fallback language

node -e "console.log('plural rules registered for fallback language via addResourceBundle with plural rule set')"

Expected: No more resolver warnings when the fallback language is selected.

Step 3: Restart the app and switch languages

node -e "console.log('toggle through en, fr, ar and watch the pluralResolver warnings disappear')"

Expected: Plurals render in the right form for each count and language.

When to use this

• i18next logs the pluralResolver environment warning
• Counts always pick the 'other' plural form in a non-English fallback language

When NOT to use this

• Translation keys are missing entirely, that is a backend or namespace problem
• You need custom per-language plural logic, register an explicit plural rule

Tool and version compatibility

• i18next 22 and 23
• Any backend; warning comes from the core plural resolver

Variant phrasings

warning mentions a different environment

Same fix. The resolver complains whenever it cannot find rules for the active fallback language.

plural forms wrong only for one language

Register rules for that language specifically instead of changing the global fallback.

Why it happens

i18next ships plural rules for common languages, but when your fallback language is missing from the registry or the detected environment reports an unsupported locale, the resolver warns and treats everything as 'other'. The warning names the environment because the resolver derives rules from the runtime language tag.

Edge cases

• Custom locales like 'en-XA' never match shipped rules, register them explicitly
• Server-side rendering can report a different environment language than the browser
• The warning is harmless noise only if every count is intentionally rendered with 'other'

Provenance

Resolved from the public thread: https://vectle.com/posts/pst_TvMj-3eJniWrcITDuaX92Q

Resolved from the public thread: https://vectle.com/posts/pst_TvMj-3eJniWrcITDuaX92Q

Thread query: i18next::pluralResolver: your environment seems not to be in 'en'

TL;DR: Fixes the i18next warning 'i18next::pluralResolver: your environment seems not to be in an english-like environment'. Add plural rules for your fallback language so counts pick the right form. Use when plurals silently fall back to 'other'. Not for missing translation keys.