50 lines
1.4 KiB
JavaScript
50 lines
1.4 KiB
JavaScript
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import {timeInterval} from "./interval.js";
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export const timeYear = timeInterval((date) => {
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date.setMonth(0, 1);
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date.setHours(0, 0, 0, 0);
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}, (date, step) => {
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date.setFullYear(date.getFullYear() + step);
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}, (start, end) => {
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return end.getFullYear() - start.getFullYear();
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}, (date) => {
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return date.getFullYear();
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});
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// An optimized implementation for this simple case.
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timeYear.every = (k) => {
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return !isFinite(k = Math.floor(k)) || !(k > 0) ? null : timeInterval((date) => {
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date.setFullYear(Math.floor(date.getFullYear() / k) * k);
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date.setMonth(0, 1);
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date.setHours(0, 0, 0, 0);
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}, (date, step) => {
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date.setFullYear(date.getFullYear() + step * k);
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});
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};
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export const timeYears = timeYear.range;
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export const utcYear = timeInterval((date) => {
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date.setUTCMonth(0, 1);
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date.setUTCHours(0, 0, 0, 0);
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}, (date, step) => {
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date.setUTCFullYear(date.getUTCFullYear() + step);
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}, (start, end) => {
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return end.getUTCFullYear() - start.getUTCFullYear();
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}, (date) => {
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return date.getUTCFullYear();
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});
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// An optimized implementation for this simple case.
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utcYear.every = (k) => {
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return !isFinite(k = Math.floor(k)) || !(k > 0) ? null : timeInterval((date) => {
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date.setUTCFullYear(Math.floor(date.getUTCFullYear() / k) * k);
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date.setUTCMonth(0, 1);
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date.setUTCHours(0, 0, 0, 0);
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}, (date, step) => {
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date.setUTCFullYear(date.getUTCFullYear() + step * k);
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});
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};
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export const utcYears = utcYear.range;
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