85 lines
2.4 KiB
JavaScript
85 lines
2.4 KiB
JavaScript
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import { readFileSync } from "node:fs";
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export function slugify(s) {
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return String(s)
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.toLowerCase()
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.normalize("NFKD")
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.replace(/[̀-ͯ]/g, "")
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.replace(/[^a-z0-9]+/g, "-")
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.replace(/^-+|-+$/g, "")
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.slice(0, 80);
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}
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export function titleCase(slug) {
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return String(slug)
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.split("-")
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.map((w) => w.charAt(0).toUpperCase() + w.slice(1))
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.join(" ");
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}
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export function todayInTz(tz) {
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const fmt = new Intl.DateTimeFormat("en-CA", {
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timeZone: tz,
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year: "numeric",
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month: "2-digit",
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day: "2-digit",
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});
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return fmt.format(new Date()); // en-CA => YYYY-MM-DD
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}
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/** ISO timestamp with Medellín's fixed -05:00 offset, e.g. 2026-06-28T14:37:09-05:00. */
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export function isoInBogota(date = new Date()) {
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const parts = new Intl.DateTimeFormat("en-CA", {
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timeZone: "America/Bogota",
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year: "numeric",
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month: "2-digit",
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day: "2-digit",
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hour: "2-digit",
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minute: "2-digit",
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second: "2-digit",
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hourCycle: "h23",
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}).formatToParts(date);
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const g = (t) => parts.find((p) => p.type === t).value;
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return `${g("year")}-${g("month")}-${g("day")}T${g("hour")}:${g("minute")}:${g("second")}-05:00`;
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}
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/** A random Bogotá timestamp earlier today (between 00:00 and now) — varied but never future. */
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export function randomTimestampTodaySoFar(tz = "America/Bogota") {
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const today = todayInTz(tz);
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const startMs = Date.parse(`${today}T00:00:00-05:00`);
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const nowMs = Date.now();
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const r = startMs + Math.floor(Math.random() * Math.max(1, nowMs - startMs));
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return isoInBogota(new Date(r));
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}
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export function addDays(isoDate, n) {
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const d = new Date(isoDate + "T00:00:00Z");
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d.setUTCDate(d.getUTCDate() + n);
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return d.toISOString().slice(0, 10);
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}
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export function loadJson(path) {
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return JSON.parse(readFileSync(path, "utf8"));
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}
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/** Extract the YAML frontmatter block (between the first two --- lines) as raw text. */
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export function readFrontmatter(mdx) {
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const m = mdx.match(/^---\n([\s\S]*?)\n---/);
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return m ? m[1] : "";
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}
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/** Minimal frontmatter field readers (good enough for our controlled schema). */
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export function fmString(fm, key) {
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const m = fm.match(new RegExp(`^${key}:\\s*"?([^"\\n]+?)"?\\s*$`, "m"));
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return m ? m[1].trim() : null;
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}
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export function fmArray(fm, key) {
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const m = fm.match(new RegExp(`^${key}:\\s*\\[([^\\]]*)\\]`, "m"));
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if (!m) return [];
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return m[1]
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.split(",")
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.map((s) => s.trim().replace(/^["']|["']$/g, ""))
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.filter(Boolean);
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}
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