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import * as fs from 'fs';
import * as path from 'path';
import {ItemStat} from '../interfaces/item.stat.interface';
const addFilesFromFolder: Function = (files: string[], folder: string): string[] => {
const subfolderNames: string[] = fs.readdirSync(folder);
// PERFORMANCE: Single lstat call per item instead of two
const itemStats: ItemStat[] = subfolderNames.map((name: string): ItemStat => {
const fullPath: string = path.join(folder, name);
const stat: fs.Stats = fs.lstatSync(fullPath);
return {
name,
fullPath,
isDirectory: stat.isDirectory()
};
});
// Separate files and folders using cached stat results
const subFiles: ItemStat[] = itemStats.filter((item: ItemStat): boolean => !item.isDirectory);
const subFolders: ItemStat[] = itemStats.filter((item: ItemStat): boolean => item.isDirectory);
// Add files to the array using native forEach
subFiles.forEach((file: ItemStat): void => {
files.push(file.fullPath);
});
// Process subfolders recursively
subFolders.forEach((subFolder: ItemStat): void => {
files = addFilesFromFolder(files, subFolder.fullPath);
});
return files;
};
export default addFilesFromFolder;
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