add option to run script directly in desktop app

src/infrastructure/Clipboard.ts

@@ -1,4 +1,3 @@
-
 export class Clipboard {
     public static copyText(text: string): void {
         const el = document.createElement('textarea');

src/infrastructure/CodeRunner.ts

@@ -0,0 +1,69 @@
+import { Environment } from '@/application/Environment/Environment';
+import os from 'os';
+import path from 'path';
+import fs from 'fs';
+import child_process from 'child_process';
+import { OperatingSystem } from '@/domain/OperatingSystem';
+
+export async function runCodeAsync(
+    code: string, folderName: string, fileExtension: string,
+    node = getNodeJs(), environment = Environment.CurrentEnvironment): Promise<void> {
+    const dir = node.path.join(node.os.tmpdir(), folderName);
+    await node.fs.promises.mkdir(dir, {recursive: true});
+    const filePath = node.path.join(dir, `run.${fileExtension}`);
+    await node.fs.promises.writeFile(filePath, code);
+    await node.fs.promises.chmod(filePath, '755');
+    const command = getExecuteCommand(filePath, environment);
+    node.child_process.exec(command);
+}
+
+function getExecuteCommand(scriptPath: string, environment: Environment): string {
+    switch (environment.os) {
+        case OperatingSystem.macOS:
+            return `open -a Terminal.app ${scriptPath}`;
+            // Another option with graphical sudo would be
+            //  `osascript -e "do shell script \\"${scriptPath}\\" with administrator privileges"`
+            // However it runs in background
+        case OperatingSystem.Windows:
+            return scriptPath;
+        default:
+            throw Error('undefined os');
+    }
+}
+
+function getNodeJs(): INodeJs {
+    return { os, path, fs, child_process };
+}
+
+export interface INodeJs {
+    os: INodeOs;
+    path: INodePath;
+    fs: INodeFs;
+    child_process: INodeChildProcess;
+}
+
+export interface INodeOs {
+    tmpdir(): string;
+}
+
+export interface INodePath {
+    join(...paths: string[]): string;
+}
+
+export interface INodeChildProcess {
+    exec(command: string): void;
+}
+
+export interface INodeFs {
+    readonly promises: INodeFsPromises;
+}
+
+interface INodeFsPromisesMakeDirectoryOptions {
+    recursive?: boolean;
+}
+
+interface INodeFsPromises { // https://github.com/DefinitelyTyped/DefinitelyTyped/blob/master/types/node/v13/fs.d.ts
+    chmod(path: string, mode: string | number): Promise<void>;
+    mkdir(path: string, options: INodeFsPromisesMakeDirectoryOptions): Promise<string>;
+    writeFile(path: string, data: string): Promise<void>;
+}