thunderbird/thunderbird-l10n
Sep 2025 – Jun 2026
9 Months active
Languages Used
FluentftlFTLJavaScript
Technical Skills
InternationalizationLocalizationFluentfront end developmentinternationalizationlocalization
Alexander Slovesnik
PROFILE
Alexander Slovesnik
Over nine months, contributed to the thunderbird/thunderbird-l10n repository by modernizing localization workflows and migrating legacy strings to the Fluent localization system. Focused on improving internationalization and accessibility across the Thunderbird UI, this work included migrating calendar, search, account creation, and filter components from DTD and PluralForm.sys.mjs to Fluent, enhancing translation consistency and maintainability. Leveraged JavaScript, FTL, and UI/UX design skills to implement Russian localization, introduce plural forms, and add ARIA attributes for accessibility. These efforts reduced translation maintenance, streamlined onboarding for new locales, and established a scalable foundation for future internationalization and localization enhancements across the project.
Overall Statistics
Feature vs Bugs
100%Features
Repository Contributions
31Total
Bugs
0
Commits
31
Features
12
Lines of code
719
Activity Months9
Your Network
361 peopleSame Organization
@mozilla-russia.org1
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aefgh39622@gmail.comMember
Work History
June 2026
6 Commits • 1 Features
Jun 1, 2026June 2026: Fluent localization migration across Thunderbird UI in thunderbird/thunderbird-l10n. Completed six-part migration across Mail, Folders, and Calendar components, migrating UI strings and dialogs to Fluent across mailnews UI, tag/UI labels, charset titles, virtualFolder properties, folder properties, calendar summaries, and calendar item summaries. This work improves internationalization coverage, reduces localization maintenance, and enables faster translation cycles for future releases.
6 Commits • 1 Features
Jun 1, 2026June 2026: Fluent localization migration across Thunderbird UI in thunderbird/thunderbird-l10n. Completed six-part migration across Mail, Folders, and Calendar components, migrating UI strings and dialogs to Fluent across mailnews UI, tag/UI labels, charset titles, virtualFolder properties, folder properties, calendar summaries, and calendar item summaries. This work improves internationalization coverage, reduces localization maintenance, and enables faster translation cycles for future releases.
June 2026
April 2026
2 Commits • 1 Features
Apr 1, 2026April 2026: Localization migration to Fluent across UI modules in thunderbird/thunderbird-l10n (Account Hub and Message Retention). Refactored and migrated strings to Fluent to improve localization coverage, consistency, and maintainability. The work aligns with Bug 1929702 and Bug 1744107, delivering a foundation for smoother translations and UI consistency in onboarding and retention workflows.
April 2026
2 Commits • 1 Features
Apr 1, 2026April 2026: Localization migration to Fluent across UI modules in thunderbird/thunderbird-l10n (Account Hub and Message Retention). Refactored and migrated strings to Fluent to improve localization coverage, consistency, and maintainability. The work aligns with Bug 1929702 and Bug 1744107, delivering a foundation for smoother translations and UI consistency in onboarding and retention workflows.
March 2026
3 Commits • 2 Features
Mar 1, 2026March 2026 (2026-03) — Focused on localization and accessibility improvements in thunderbird/thunderbird-l10n. Delivered Fluent-based localization migration for Filter UI and related dialogs, and added ARIA attributes to tree views to enhance screen reader usability. These changes advance internationalization, UI consistency across locales, and accessibility compliance, enabling broader adoption and reducing localization effort.
3 Commits • 2 Features
Mar 1, 2026March 2026 (2026-03) — Focused on localization and accessibility improvements in thunderbird/thunderbird-l10n. Delivered Fluent-based localization migration for Filter UI and related dialogs, and added ARIA attributes to tree views to enhance screen reader usability. These changes advance internationalization, UI consistency across locales, and accessibility compliance, enabling broader adoption and reducing localization effort.
March 2026
February 2026
10 Commits • 2 Features
Feb 1, 2026February 2026 (2026-02) monthly summary for thunderbird/thunderbird-l10n: Delivered Fluent-based localization and internationalization across the UI, added Russian translations with plural forms, and migrated multiple components away from PluralForm.sys.mjs; introduced Chat Notification Previews for bundled messages; improved maintainability and scalability of localization efforts and positioned the product for broader international adoption and quicker future contributions.
February 2026
10 Commits • 2 Features
Feb 1, 2026February 2026 (2026-02) monthly summary for thunderbird/thunderbird-l10n: Delivered Fluent-based localization and internationalization across the UI, added Russian translations with plural forms, and migrated multiple components away from PluralForm.sys.mjs; introduced Chat Notification Previews for bundled messages; improved maintainability and scalability of localization efforts and positioned the product for broader international adoption and quicker future contributions.
January 2026
1 Commits • 1 Features
Jan 1, 20262026-01 Monthly summary: Focused on localization improvements in the thunderbird-l10n repo, delivering a Fluent-based account creation localization and initiating a migration of the accountCreationModel to Fluent. These efforts establish a scalable localization foundation for the account setup flow and align with the broader i18n/l10n roadmap while improving user feedback during account creation.
1 Commits • 1 Features
Jan 1, 20262026-01 Monthly summary: Focused on localization improvements in the thunderbird-l10n repo, delivering a Fluent-based account creation localization and initiating a migration of the accountCreationModel to Fluent. These efforts establish a scalable localization foundation for the account setup flow and align with the broader i18n/l10n roadmap while improving user feedback during account creation.
January 2026
December 2025
2 Commits • 1 Features
Dec 1, 2025December 2025 monthly summary for thunderbird/thunderbird-l10n: Strengthened localization coverage and streamlined the localization pipeline for the Thunderbird Search UI, with a focus on Russian localization and Fluent migration.
December 2025
2 Commits • 1 Features
Dec 1, 2025December 2025 monthly summary for thunderbird/thunderbird-l10n: Strengthened localization coverage and streamlined the localization pipeline for the Thunderbird Search UI, with a focus on Russian localization and Fluent migration.
November 2025
2 Commits • 1 Features
Nov 1, 2025November 2025 — Focused on localization improvements in the thunderbird-l10n repository, delivering foundational Fluent migrations and a new multi-author localization string. Completed migration work toward Fluent for UI and news content, setting the stage for scalable internationalization and reduced translation maintenance. The work aligns with company priorities to improve user experience across languages and simplify ongoing localization.
2 Commits • 1 Features
Nov 1, 2025November 2025 — Focused on localization improvements in the thunderbird-l10n repository, delivering foundational Fluent migrations and a new multi-author localization string. Completed migration work toward Fluent for UI and news content, setting the stage for scalable internationalization and reduced translation maintenance. The work aligns with company priorities to improve user experience across languages and simplify ongoing localization.
November 2025
October 2025
2 Commits • 2 Features
Oct 1, 2025October 2025 solid progress on localization modernization in thunderbird/thunderbird-l10n and taxonomy cleanup in Thunderbird Messenger, delivering both business value and technical modernization. Key highlights include migration from calendar.dtd to Fluent for calendar localization and cleanup of Russian localization taxonomy by moving items from Junk to Spam, with Fluent updates and UI label improvements. These efforts reduce long-term maintenance, improve translation consistency, and lay groundwork for scalable, Fluent-based localization across the project.
October 2025
2 Commits • 2 Features
Oct 1, 2025October 2025 solid progress on localization modernization in thunderbird/thunderbird-l10n and taxonomy cleanup in Thunderbird Messenger, delivering both business value and technical modernization. Key highlights include migration from calendar.dtd to Fluent for calendar localization and cleanup of Russian localization taxonomy by moving items from Junk to Spam, with Fluent updates and UI label improvements. These efforts reduce long-term maintenance, improve translation consistency, and lay groundwork for scalable, Fluent-based localization across the project.
September 2025
3 Commits • 1 Features
Sep 1, 2025September 2025 monthly summary for thunderbird/thunderbird-l10n: Delivered Calendar Localization Modernization by migrating calendar-related strings from DTD to Fluent across context, tasks, and alarms for Russian localization. Implemented through three commits (Bug 1982630, 1982633, 1982635 part 2), improving localization quality, consistency, and maintainability. This work enables Fluent-based translations in the calendar module and paves the way for streamlined QA and future updates.
3 Commits • 1 Features
Sep 1, 2025September 2025 monthly summary for thunderbird/thunderbird-l10n: Delivered Calendar Localization Modernization by migrating calendar-related strings from DTD to Fluent across context, tasks, and alarms for Russian localization. Implemented through three commits (Bug 1982630, 1982633, 1982635 part 2), improving localization quality, consistency, and maintainability. This work enables Fluent-based translations in the calendar module and paves the way for streamlined QA and future updates.
September 2025
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Quality Metrics
Correctness100.0%
Maintainability100.0%
Architecture100.0%
Performance100.0%
AI Usage22.6%
Skills & Technologies
Programming Languages
FTLFluentJavaScriptftl
Technical Skills
FTLFluentInternationalizationJavaScriptLocalizationUI/UX designaccessibilityfront end developmenti18ninternationalizationlocalizationsoftware developmentuser interface design
Repositories Contributed To
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