@policies/grida-valid-username

Username validation

yarn add @policies/grida-valid-username

import { prevalidate, flat } from "@policies/grida-valid-username";

const username = "Some extraord!nary Us3rnamé";

prevalidate(username); // -> valid: false, type: "invalid-characters"
flat(username); // -> some-extraordnary-us3rname
prevalidate(flat(username)); // -> valid: true

Invalidations

export type InvalidationType =
  | "already-taken"
  | "too-long"
  | "blank-space"
  | "start-with-hyphen"
  | "end-with-hyphen"
  | "consecutive-hyphens"
  | "invalid-character"
  | "unknown";

The regex

/^[a-z\d](?:[a-z\d]|-(?=[a-z\d])){0,38}$/i;

Blocked

Bad words

• https://github.com/RobertJGabriel/Google-profanity-words
• https://github.com/LDNOOBW/List-of-Dirty-Naughty-Obscene-and-Otherwise-Bad-Words
• https://www.freewebheaders.com/full-list-of-bad-words-banned-by-google/