1 files changed, 36 insertions, 0 deletions
diff --git a/packages/bun-polyfills/src/utils/misc.ts b/packages/bun-polyfills/src/utils/misc.ts
new file mode 100644
index 000000000..74bb9aa01
--- /dev/null
+++ b/packages/bun-polyfills/src/utils/misc.ts
@@ -0,0 +1,36 @@
+import streams from 'node:stream';
+import type { SpawnOptions, FileBlob } from 'bun';
+
+export const getter = <T>(obj: T, key: string | symbol, get: () => any, enumerable = false, configurable = true): void => {
+    Object.defineProperty(obj, key, { get, configurable, enumerable });
+};
+
+export const setter = <T>(obj: T, key: string | symbol, set: () => any, enumerable = false, configurable = true): void => {
+    Object.defineProperty(obj, key, { set, configurable, enumerable });
+};
+
+export const readonly = <T>(obj: T, key: string | symbol, value: unknown, enumerable = false, configurable = true): void => {
+    Object.defineProperty(obj, key, { value, configurable, enumerable });
+};
+
+export function streamToBuffer(stream: streams.Readable | streams.Duplex): Promise<Buffer> {
+    return new Promise((resolve, reject) => {
+        const buffers: Uint8Array[] = [];
+        stream.on("data", (chunk: Uint8Array) => buffers.push(chunk));
+        stream.on("end", () => resolve(Buffer.concat(buffers)));
+        stream.on("error", (err: Error) => reject(err));
+    });
+}
+
+export function isArrayBufferView(value: any): value is ArrayBufferView {
+    return value !== null && typeof value === 'object' && 
+        value.buffer instanceof ArrayBuffer && typeof value.byteLength === 'number' && typeof value.byteOffset === 'number';
+}
+
+export function isOptions(options: any): options is SpawnOptions.OptionsObject {
+    return options !== null && typeof options === 'object';
+}
+
+export function isFileBlob(blob: any): blob is FileBlob {
+    return blob instanceof Blob && Reflect.get(blob, 'readable') instanceof ReadableStream && typeof Reflect.get(blob, 'writer') === 'function';
+}