Initial commit

src/lib/durationFormat.ts

@@ -0,0 +1,96 @@
+/*
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs LLC <hello@stalw.art>
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
+
+export const SIZE_UNITS = ['B', 'KB', 'MB', 'GB', 'TB'] as const;
+
+const SIZE_FACTORS: Record<string, number> = {
+  B: 1,
+  KB: 1024,
+  MB: 1024 ** 2,
+  GB: 1024 ** 3,
+  TB: 1024 ** 4,
+};
+
+export function bytesToHuman(bytes: number): { value: number; unit: string } {
+  if (bytes === 0) return { value: 0, unit: 'B' };
+
+  for (let i = SIZE_UNITS.length - 1; i >= 0; i--) {
+    const unit = SIZE_UNITS[i];
+    const factor = SIZE_FACTORS[unit];
+    const v = bytes / factor;
+    if (v >= 1) {
+      const rounded = Math.round(v * 100) / 100;
+      return { value: rounded, unit };
+    }
+  }
+
+  return { value: bytes, unit: 'B' };
+}
+
+export function humanToBytes(value: number, unit: string): number {
+  const factor = SIZE_FACTORS[unit];
+  if (factor === undefined) return value;
+  return Math.round(value * factor);
+}
+
+export function formatSize(bytes: number): string {
+  const { value, unit } = bytesToHuman(bytes);
+  return `${value} ${unit}`;
+}
+
+export const DURATION_UNITS = ['ms', 's', 'min', 'h', 'd'] as const;
+
+const DURATION_FACTORS: Record<string, number> = {
+  ms: 1,
+  s: 1_000,
+  min: 60_000,
+  h: 3_600_000,
+  d: 86_400_000,
+};
+
+export function msToHuman(ms: number): { value: number; unit: string } {
+  if (ms === 0) return { value: 0, unit: 'ms' };
+
+  for (let i = DURATION_UNITS.length - 1; i >= 0; i--) {
+    const unit = DURATION_UNITS[i];
+    const factor = DURATION_FACTORS[unit];
+    const v = ms / factor;
+    if (v >= 1) {
+      const rounded = Math.round(v * 100) / 100;
+      return { value: rounded, unit };
+    }
+  }
+
+  return { value: ms, unit: 'ms' };
+}
+
+export function humanToMs(value: number, unit: string): number {
+  const factor = DURATION_FACTORS[unit];
+  if (factor === undefined) return value;
+  return Math.round(value * factor);
+}
+
+export function formatDuration(ms: number): string {
+  if (ms === 0) return '0ms';
+
+  const d = Math.floor(ms / 86_400_000);
+  ms %= 86_400_000;
+  const h = Math.floor(ms / 3_600_000);
+  ms %= 3_600_000;
+  const m = Math.floor(ms / 60_000);
+  ms %= 60_000;
+  const s = Math.floor(ms / 1_000);
+  ms %= 1_000;
+
+  const parts: string[] = [];
+  if (d > 0) parts.push(`${d}d`);
+  if (h > 0) parts.push(`${h}h`);
+  if (m > 0) parts.push(`${m}m`);
+  if (s > 0) parts.push(`${s}s`);
+  if (ms > 0) parts.push(`${ms}ms`);
+
+  return parts.join(' ');
+}