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Frontend-Learner/node_modules/oxc-parser/src-js/raw-transfer/supported.js

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+import { rawTransferSupported as rawTransferSupportedBinding } from "../bindings.js";
+
+let rawTransferIsSupported = null;
+
+/**
+ * Returns `true` if `experimentalRawTransfer` is option is supported.
+ *
+ * Raw transfer is only supported on 64-bit little-endian systems,
+ * and NodeJS >= v22.0.0 or Deno >= v2.0.0.
+ *
+ * Versions of NodeJS prior to v22.0.0 do not support creating an `ArrayBuffer` larger than 4 GiB.
+ * Bun (as at v1.2.4) also does not support creating an `ArrayBuffer` larger than 4 GiB.
+ * Support on Deno v1 is unknown and it's EOL, so treating Deno before v2.0.0 as unsupported.
+ *
+ * No easy way to determining pointer width (64 bit or 32 bit) in JS,
+ * so call a function on Rust side to find out.
+ *
+ * @returns {boolean} - `true` if raw transfer is supported on this platform
+ */
+export function rawTransferSupported() {
+  if (rawTransferIsSupported === null) {
+    rawTransferIsSupported = rawTransferRuntimeSupported() && rawTransferSupportedBinding();
+  }
+  return rawTransferIsSupported;
+}
+
+// Checks copied from:
+// https://github.com/unjs/std-env/blob/ab15595debec9e9115a9c1d31bc7597a8e71dbfd/src/runtimes.ts
+// MIT license: https://github.com/unjs/std-env/blob/ab15595debec9e9115a9c1d31bc7597a8e71dbfd/LICENCE
+function rawTransferRuntimeSupported() {
+  let global;
+  try {
+    global = globalThis;
+  } catch {
+    return false;
+  }
+
+  const isBun = !!global.Bun || !!global.process?.versions?.bun;
+  if (isBun) return false;
+
+  const isDeno = !!global.Deno;
+  if (isDeno) {
+    const match = Deno.version?.deno?.match(/^(\d+)\./);
+    return !!match && match[1] * 1 >= 2;
+  }
+
+  const isNode = global.process?.release?.name === "node";
+  if (!isNode) return false;
+
+  const match = process.version?.match(/^v(\d+)\./);
+  return !!match && match[1] * 1 >= 22;
+}