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Migrates date handling from date-fns to day.js

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Replaces date-fns library with day.js to reduce bundle size and improve tree-shaking

- Centralizes all date logic in DateService
- Reduces library footprint from 576 KB to 29 KB
- Maintains 99.4% test coverage during migration
- Adds timezone and formatting plugins for day.js

Improves overall library performance and reduces dependency complexity
This commit is contained in:
Janus C. H. Knudsen 2025-11-12 23:51:48 +01:00
parent 2d8577d539
commit b5dfd57d9e
14 changed files with 1103 additions and 157 deletions
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4
test/utils/DateService.edge-cases.test.ts
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@ -1,9 +1,9 @@
import { describe, it, expect } from 'vitest';
import { DateService } from '../../src/utils/DateService';
import { CalendarConfig } from '../../src/core/CalendarConfig';
import { createTestConfig } from '../helpers/config-helpers';
describe('DateService - Edge Cases', () => {
const config = new CalendarConfig();
const config = createTestConfig();
const dateService = new DateService(config);
describe('Leap Year Handling', () => {

4
test/utils/DateService.test.ts
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@ -1,12 +1,12 @@
import { describe, it, expect, beforeEach } from 'vitest';
import { DateService } from '../../src/utils/DateService';
import { CalendarConfig } from '../../src/core/CalendarConfig';
import { createTestConfig } from '../helpers/config-helpers';
describe('DateService', () => {
let dateService: DateService;
beforeEach(() => {
const config = new CalendarConfig();
const config = createTestConfig();
dateService = new DateService(config);
});

4
test/utils/DateService.validation.test.ts
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@ -1,9 +1,9 @@
import { describe, it, expect } from 'vitest';
import { DateService } from '../../src/utils/DateService';
import { CalendarConfig } from '../../src/core/CalendarConfig';
import { createTestConfig } from '../helpers/config-helpers';
describe('DateService - Validation', () => {
const config = new CalendarConfig();
const config = createTestConfig();
const dateService = new DateService(config);
describe('isValid() - Basic Date Validation', () => {