init

node_modules/svelte/src/internal/server/crypto.js

@@ -0,0 +1,41 @@
+import { BROWSER } from 'esm-env';
+
+let text_encoder;
+// TODO - remove this and use global `crypto` when we drop Node 18
+let crypto;
+
+/** @param {string} data */
+export async function sha256(data) {
+	text_encoder ??= new TextEncoder();
+
+	// @ts-expect-error
+	crypto ??= globalThis.crypto?.subtle?.digest
+		? globalThis.crypto
+		: // @ts-ignore - we don't install node types in the prod build
+			(await import('node:crypto')).webcrypto;
+
+	const hash_buffer = await crypto.subtle.digest('SHA-256', text_encoder.encode(data));
+
+	return base64_encode(hash_buffer);
+}
+
+/**
+ * @param {Uint8Array} bytes
+ * @returns {string}
+ */
+export function base64_encode(bytes) {
+	// Using `Buffer` is faster than iterating
+	// @ts-ignore
+	if (!BROWSER && globalThis.Buffer) {
+		// @ts-ignore
+		return globalThis.Buffer.from(bytes).toString('base64');
+	}
+
+	let binary = '';
+
+	for (let i = 0; i < bytes.length; i++) {
+		binary += String.fromCharCode(bytes[i]);
+	}
+
+	return btoa(binary);
+}