What problem does it solve? Adding Hebrew to a web or mobile app breaks in predictable ways: plural forms ignore the Hebrew dual category, dates render in American MM/DD/YYYY order, currency strings contain invisible direction marks that fail tests, and RTL layouts break when direction is set on the wrong element. This Skill provides verified, framework-specific patterns for each of these problems. ## Core Features & Use Cases - Framework setup guides: Step-by-step i18n configuration for react-intl, react-i18next, vue-i18n, next-intl (Next.js App Router), Angular, and React Native, including the exact plural syntax each library expects. - Hebrew pluralization: CLDR one/two/other rules with dual forms (יומיים, שעתיים), ICU MessageFormat patterns, and edge cases for decimals and zero. - Locale formatting: Intl.DateTimeFormat and Intl.NumberFormat patterns for he-IL dates, Hebrew calendar dates, and ILS currency, including the hidden U+200F marks that break string comparisons. - RTL and bidi handling: CSS logical properties, Tailwind RTL utilities, dir attribute strategies, and fixes for phone numbers, URLs, and mixed Hebrew/English content. - Use Case: A developer adding Hebrew to a Next.js app uses the Skill to wire up next-intl with a [locale] segment, set dir="rtl" on the html element, write ICU plural messages, and scaffold the he.json file with the bundled generator script. ## Quick Start Ask the AI to add Hebrew language support with RTL layout and correct plural forms to your React, Vue, or Next.js application.