fix: setup Jest with TS

packages/utils/src/auth.js

@@ -0,0 +1,38 @@
+export function isValidUsername(username) {
+  // check if the username is between 1 and 32 characters
+  if (username.length > 32) {
+    return false
+  }
+
+  // Define a regular expression pattern for a valid Linux username.
+  const usernamePattern = /^[a-z][a-z0-9_-]*$/
+
+  // Test the username against the pattern.
+  if (!usernamePattern.test(username)) return false
+
+  const reservedWords = [
+    'root',
+    'admin',
+    'administrator',
+    'sysadmin',
+    'system',
+    'daemon',
+    'bin',
+    'nobody',
+    'nogroup',
+    'guest',
+    'user',
+  ]
+  if (reservedWords.includes(username)) {
+    return false
+  }
+  return true
+}
+
+export function isValidEmail(email) {
+  // Define a regular expression pattern for a valid email address.
+  const emailPattern = /^[\w-.+]+@([\w][\w-]*\.)+[\w-]{2,}$/
+
+  // Test the email against the pattern.
+  return emailPattern.test(email)
+}

packages/utils/src/commands.js

@@ -0,0 +1,16 @@
+const fileTypes = {
+  file: '-f',
+  folder: '-d',
+  link: '-L',
+  socket: '-S',
+}
+
+function sanitizePath(path) {
+  return path.replace(/[^a-zA-Z0-9._/-]/g, '')
+}
+
+// eslint-disable-next-line import/prefer-default-export
+export function buildFileCheckCmd(file) {
+  const { path, type } = file
+  return ['test', fileTypes[type] || '-e', sanitizePath(path)]
+}

packages/utils/src/dag.js

@@ -0,0 +1,73 @@
+export default class DAG {
+  #nodes = new Map()
+
+  #edges = new Set()
+
+  #layers = []
+
+  constructor(nodes) {
+    this.#nodes = new Map(nodes.map((node) => [node._id, node]))
+    this.#edges = new Set()
+    this.#nodes.forEach((_, id) => {
+      this.#setLayer(id)
+      this.#addEdges(id)
+    })
+  }
+
+  getNode(id) {
+    return this.#nodes.get(id)
+  }
+
+  getNodes() {
+    return Array.from(this.#nodes.values())
+  }
+
+  getEdges() {
+    return this.#edges
+  }
+
+  getEdgesArray() {
+    return Array.from(this.#edges.values())
+  }
+
+  getLayers() {
+    return this.#layers
+  }
+
+  getLayer(id) {
+    const node = this.getNode(id)
+    if (!node) {
+      throw new Error(`Node ${id} not found`)
+    }
+    return this.#layers[node.layer - 1]
+  }
+
+  #setLayer(id) {
+    const node = this.getNode(id)
+    if (!node) {
+      throw new Error(`Node ${id} not found`)
+    }
+    if (node.layer !== undefined) {
+      return node.layer
+    }
+    const previousLayer = node.requirements.map((rId) => this.#setLayer(rId))
+    node.layer = Math.max(...previousLayer, 0) + 1
+    if (this.#layers.length < node.layer) {
+      this.#layers.push(1)
+    } else {
+      this.#layers[node.layer - 1] += 1
+    }
+    node.index = this.#layers[node.layer - 1]
+    return node.layer
+  }
+
+  #addEdges(id) {
+    const node = this.getNode(id)
+    if (!node) {
+      throw new Error(`Node ${id} not found`)
+    }
+    node.requirements.forEach((rId) => {
+      this.#edges.add([rId, id])
+    })
+  }
+}

packages/utils/src/index.js

@@ -0,0 +1,3 @@
+export { isValidEmail, isValidUsername } from './auth.js'
+export { buildFileCheckCmd } from './commands.js'
+export { default as DAG } from './dag.js'