@emotion/is-prop-valid/src/index.ts

A function to check whether a prop is valid for HTML and SVG elements

import memoize from '@emotion/memoize'

declare const codegen: { require: (path: string) => any }

// eslint-disable-next-line no-undef
const reactPropsRegex: RegExp = codegen.require('./props')

// https://esbench.com/bench/5bfee68a4cd7e6009ef61d23
const isPropValid = /* #__PURE__ */ memoize(
  prop =>
    reactPropsRegex.test(prop) ||
    (prop.charCodeAt(0) === 111 /* o */ &&
      prop.charCodeAt(1) === 110 /* n */ &&
      prop.charCodeAt(2) < 91) /* Z+1 */
)

export default isPropValid