addon/src/-private/deprecate.js
const NAMESPACE = 'ember-cli-page-object';
export default function deprecate(name, message, since, until) {
if (Array.isArray(deprecate.__calls)) {
deprecate.__calls.push([name, message, since, until]);
}
const [major, minor] = since.split('.');
console.warn(
`DEPRECATION: ${message} [deprecation id: ${NAMESPACE}.${name}] See https://ember-cli-page-object.js.org/docs/v${major}.${minor}.x/deprecations#${name} for more details.`
);
}