ferdi2goandClaude Opus 4.8
fd9870871b
New js/utils.js exports toISO, monthPrefix, getWeekday, formatDateDE and buildNameMap. algorithm.js, calendar.js, excel.js and history.js now import these instead of re-implementing ISO construction, weekday math, DD.MM.YYYY formatting and the id→name map inline. Adds tests/utils.test.mjs. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
29 lines
908 B
JavaScript
29 lines
908 B
JavaScript
// Shared pure helpers used across modules.
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// "YYYY-MM-DD" from numeric parts.
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export function toISO(year, month, day) {
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return year + '-' + String(month).padStart(2, '0') + '-' + String(day).padStart(2, '0');
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}
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// "YYYY-MM" month prefix (used to filter history by month).
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export function monthPrefix(year, month) {
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return year + '-' + String(month).padStart(2, '0');
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}
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// Weekday for an ISO date string: 1=Mo, 2=Di, 3=Mi, 4=Do, 5=Fr, 6=Sa, 7=So.
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export function getWeekday(isoDate) {
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const d = new Date(isoDate + 'T12:00:00Z').getUTCDay(); // 0=Sun
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return d === 0 ? 7 : d;
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}
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// "DD.MM.YYYY" from an ISO date string.
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export function formatDateDE(isoDate) {
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const [y, m, d] = isoDate.split('-');
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return d + '.' + m + '.' + y;
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}
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// { [id]: name } lookup map from an employees array.
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export function buildNameMap(employees) {
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return Object.fromEntries(employees.map(e => [e.id, e.name]));
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}
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