node: use fileSystem in BacktraceFileAttachment

Author: perf2711

packages/node/src/attachment/BacktraceFileAttachment.ts

@@ -2,18 +2,19 @@ import { BacktraceFileAttachment as CoreBacktraceFileAttachment } from '@backtra
 import fs from 'fs';
 import path from 'path';
 import { Readable } from 'stream';
+import { NodeFileSystem } from '../storage/interfaces/NodeFileSystem';
 
 export class BacktraceFileAttachment implements CoreBacktraceFileAttachment<Readable> {
     public readonly name: string;
 
-    constructor(public readonly filePath: string, name?: string) {
+    constructor(public readonly filePath: string, name?: string, private readonly _fileSystem?: NodeFileSystem) {
         this.name = name ?? path.basename(this.filePath);
     }
 
-    public get(): fs.ReadStream | undefined {
-        if (!fs.existsSync(this.filePath)) {
+    public get(): Readable | undefined {
+        if (!(this._fileSystem ?? fs).existsSync(this.filePath)) {
             return undefined;
         }
-        return fs.createReadStream(this.filePath);
+        return (this._fileSystem ?? fs).createReadStream(this.filePath);
     }
 }