lab-Anthony

lab-Anthony/.eslintignore

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+**/node_modules/*
+**/vendor/*
+**/*.min.js
+**/coverage/*
+**/build/*

lab-Anthony/.eslintrc.json

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+{
+  "env": {
+    "browser": true,
+    "node": true,
+    "commonjs": true,
+    "jest": true,
+    "es6": true
+  },
+  "globals": {
+    "err": true,
+    "req": true,
+    "res": true,
+    "next": true
+  },
+  "extends": "eslint:recommended",
+  "parserOptions": {
+    "sourceType": "module"
+  },
+  "rules": {
+    "no-console": "off",
+    "indent": [ "error", 2 ],
+    "quotes": ["error", "single", { "allowTemplateLiterals": true }],
+    "space-infix-ops": ["error", {"int32Hint": false}],
+    "comma-dangle": ["error", "always-multiline"],
+    "semi": [ "error", "always" ]
+  }
+}

lab-Anthony/.gitignore

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+
+# Created by https://www.gitignore.io/api/osx,vim,node,linux,windows,visualstudiocode
+
+### Linux ###
+*~
+
+# temporary files which can be created if a process still has a handle open of a deleted file
+.fuse_hidden*
+
+# KDE directory preferences
+.directory
+
+# Linux trash folder which might appear on any partition or disk
+.Trash-*
+
+# .nfs files are created when an open file is removed but is still being accessed
+.nfs*
+
+### Node ###
+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+
+# Runtime data
+pids
+*.pid
+*.seed
+*.pid.lock
+
+# Directory for instrumented libs generated by jscoverage/JSCover
+lib-cov
+
+# Coverage directory used by tools like istanbul
+coverage
+
+# nyc test coverage
+.nyc_output
+
+# Grunt intermediate storage (http://gruntjs.com/creating-plugins#storing-task-files)
+.grunt
+
+# Bower dependency directory (https://bower.io/)
+bower_components
+
+# node-waf configuration
+.lock-wscript
+
+# Compiled binary addons (http://nodejs.org/api/addons.html)
+build/Release
+
+# Dependency directories
+node_modules/
+jspm_packages/
+
+# Typescript v1 declaration files
+typings/
+
+# Optional npm cache directory
+.npm
+
+# Optional eslint cache
+.eslintcache
+
+# Optional REPL history
+.node_repl_history
+
+# Output of 'npm pack'
+*.tgz
+
+# Yarn Integrity file
+.yarn-integrity
+
+# dotenv environment variables file
+.env
+
+
+### OSX ###
+*.DS_Store
+.AppleDouble
+.LSOverride
+
+# Icon must end with two \r
+Icon
+
+# Thumbnails
+._*
+
+# Files that might appear in the root of a volume
+.DocumentRevisions-V100
+.fseventsd
+.Spotlight-V100
+.TemporaryItems
+.Trashes
+.VolumeIcon.icns
+.com.apple.timemachine.donotpresent
+
+# Directories potentially created on remote AFP share
+.AppleDB
+.AppleDesktop
+Network Trash Folder
+Temporary Items
+.apdisk
+
+### Vim ###
+# swap
+[._]*.s[a-v][a-z]
+[._]*.sw[a-p]
+[._]s[a-v][a-z]
+[._]sw[a-p]
+# session
+Session.vim
+# temporary
+.netrwhist
+# auto-generated tag files
+tags
+
+### VisualStudioCode ###
+.vscode/*
+!.vscode/settings.json
+!.vscode/tasks.json
+!.vscode/launch.json
+!.vscode/extensions.json
+.history
+
+### Windows ###
+# Windows thumbnail cache files
+Thumbs.db
+ehthumbs.db
+ehthumbs_vista.db
+
+# Folder config file
+Desktop.ini
+
+# Recycle Bin used on file shares
+$RECYCLE.BIN/
+
+# Windows Installer files
+*.cab
+*.msi
+*.msm
+*.msp
+
+# Windows shortcuts
+*.lnk
+
+# End of https://www.gitignore.io/api/osx,vim,node,linux,windows,visualstudiocode

lab-Anthony/README.md

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+The fs module has an arity of 2, and it accepts an array of file paths and a callback as it's arguments.
+If the file path is invalid it will return an error, otherwise it will return a string from the contents of the file.

lab-Anthony/__test__/assets/uh.txt

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+uhhhhh

lab-Anthony/__test__/assets/um.txt

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+ummmm

lab-Anthony/__test__/assets/ye.txt

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+yeeee

lab-Anthony/__test__/reader.test.js

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+'use strict';
+
+const reader = require('../lib/reader.js');
+
+describe('reader', () => {
+  test('invalid path should return an error', (done) => {
+    reader([`${__dirname}/assets/stuff1.txt`,`${__dirname}/assets/stuff2.txt`,`${__dirname}/assets/stuff3.txt`], (err, data) => {
+      expect(err).not.toBeNull();
+      expect(data).toBeUndefined();
+      done();
+    });
+  });
+  test('a valid path should resolve a string', (done) => {
+    reader([`${__dirname}/assets/uh.txt`,`${__dirname}/assets/um.txt`,`${__dirname}/assets/ye.txt`], (err, data) => {
+      console.log('testdata: ', data);
+      expect(err).toBeNull();
+      expect(data).toEqual(['uhhhhh\n','ummmm\n','yeeee\n']);
+      done();
+    });
+  });
+});

lab-Anthony/lib/reader.js

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+const fs = require('fs');
+
+module.exports = (paths, callback) => {
+  let results = [];
+  fs.readFile(paths[0], (err, data) => {
+    if(err) return callback(err); results.push(data.toString());
+    fs.readFile(paths[1], (err, data) => {
+      if(err) return callback(err); results.push(data.toString());
+      fs.readFile(paths[2], (err, data) => {
+        if(err) return callback(err); results.push(data.toString());
+        callback(null, results);
+      });
+    });
+  });
+};