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build/shims.js

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+import buffer from 'node:buffer';
+import { webcrypto } from 'node:crypto';
+
+// `buffer.File` was added in Node 18.13.0 while the `File` global was added in Node 20.0.0
+const File = /** @type {import('node:buffer') & { File?: File}} */ (buffer).File;
+
+/** @type {Record<string, any>} */
+const globals = {
+	crypto: webcrypto,
+	File
+};
+
+// exported for dev/preview and node environments
+/**
+ * Make various web APIs available as globals:
+ * - `crypto`
+ * - `File`
+ */
+function installPolyfills() {
+	for (const name in globals) {
+		if (name in globalThis) continue;
+
+		Object.defineProperty(globalThis, name, {
+			enumerable: true,
+			configurable: true,
+			writable: true,
+			value: globals[name]
+		});
+	}
+}
+
+installPolyfills();