matthewp/is-valid-element-name

Determines if an element name is valid according to the spec.

is-valid-element-name

Determines if an string is a valid element name. Like validate-element-name but without opinions on what a custom element name should be.

Backed by is-potential-custom-element-name which does the heavy lifting, but also checks against reserved names.

Install

npm install is-valid-element-name --save

Use

var isValidElementName = require("is-valid-element-name");

isValidElementName("hello-world"); // -> true
isValidElementName("div"); // -> false
isValidElementName("f0_0_0-what"); // -> true

// This is a reserved name.
isvalidElementName("font-face"); // -> false

License

BSD 2 Clause

is-valid-element-name's Issues

An API for a reason why it's not valid

Something like: isValidElementName.whyInvalid(), that takes a component name and returns a string that is either:

• Name must include a hyphen.
• Name is reserved
• https://html.spec.whatwg.org/multipage/scripting.html#prod-potentialcustomelementname
  (when it fails the check from is-potential-custom-element-name)

Or maybe an object with some error code and a string?