ember-codemod-add-component-signatures/dist/src/steps/create-signatures/create-signature/is-signature.js

Codemod to add component signatures

function getKeys(nodes) {
    return new Set(nodes.map(({ key }) => key.name));
}
export function isSignature(nodes) {
    const keys = getKeys(nodes);
    return keys.has('Args') || keys.has('Blocks') || keys.has('Element');
}