Add `@astrojs/webapi` package (#2729)@astrojs/webapi@0.11.0

* chore: add @astrojs/webapi

* chore: update package.json

* fix: update file case

* fix: remove lowercase file

* chore: update tests to use mocha

* chore: update LICENSE

1 files changed, 35 insertions, 0 deletions

diff --git a/packages/webapi/src/lib/AnimationFrame.ts b/packages/webapi/src/lib/AnimationFrame.ts
new file mode 100644
index 000000000..744c445bf
--- /dev/null
+++ b/packages/webapi/src/lib/AnimationFrame.ts
@@ -0,0 +1,35 @@
+import { setTimeout as nodeSetTimeout, clearTimeout as nodeClearTimeout } from 'node:timers'
+import * as _ from './utils.js'
+
+const INTERNAL = { tick: 0, pool: new Map }
+
+export function requestAnimationFrame<TArgs extends any[], TFunc extends (...args: TArgs) => any>(callback: TFunc): number {
+	if (!INTERNAL.pool.size) {
+		nodeSetTimeout(() => {
+			const next = _.__performance_now()
+
+			for (const func of INTERNAL.pool.values()) {
+				func(next)
+			}
+
+			INTERNAL.pool.clear()
+		}, 1000 / 16)
+	}
+
+	const func = _.__function_bind(callback, undefined)
+	const tick = ++INTERNAL.tick
+
+	INTERNAL.pool.set(tick, func)
+
+	return tick
+}
+
+export function cancelAnimationFrame(requestId: number): void {
+	const timeout = INTERNAL.pool.get(requestId)
+
+	if (timeout) {
+		nodeClearTimeout(timeout)
+
+		INTERNAL.pool.delete(requestId)
+	}
+}