chore: frontend testing setup (#1739)

* add vitest

* initialize lib w/ tests

* move to dev dep

* run tests in CI

* update file names

* move api folder to lib

* move api and api types to same folder

* update generator outpath

* rm husky

* i guess i _did_ need those types

* reorg types

* extract validators into testable components

* (WIP) start composable testing

* fix import type

* fix linter complaint

* simplify icon type def

* fix linter errors (maybe?)

* rename client file for sorting

frontend/lib/validators/password.ts

@@ -0,0 +1,45 @@
+const flaggedWords = ["password", "mealie", "admin", "qwerty", "login"];
+
+/**
+ * scorePassword returns a score for a given password between 0 and 100.
+ * if a password contains a flagged word, it returns 0.
+ * @param pass
+ * @returns
+ */
+export function scorePassword(pass: string): number {
+  let score = 0;
+  if (!pass) return score;
+
+  if (pass.length < 6) return score;
+
+  // Check for flagged words
+  for (const word of flaggedWords) {
+    if (pass.toLowerCase().includes(word)) {
+      return 0;
+    }
+  }
+
+  // award every unique letter until 5 repetitions
+  const letters: { [key: string]: number } = {};
+
+  for (let i = 0; i < pass.length; i++) {
+    letters[pass[i]] = (letters[pass[i]] || 0) + 1;
+    score += 5.0 / letters[pass[i]];
+  }
+
+  // bonus points for mixing it up
+  const variations: { [key: string]: boolean } = {
+    digits: /\d/.test(pass),
+    lower: /[a-z]/.test(pass),
+    upper: /[A-Z]/.test(pass),
+    nonWords: /\W/.test(pass),
+  };
+
+  let variationCount = 0;
+  for (const check in variations) {
+    variationCount += variations[check] === true ? 1 : 0;
+  }
+  score += (variationCount - 1) * 10;
+
+  return Math.max(Math.min(score, 100), 0);
+}