element-vir/dist/template-transforms/minimal-element-definition.js

Heroic. Reactive. Declarative. Type safe. Web components without compromise.

import { check } from '@augment-vir/assert';
/**
 * Checks if properties can be read off of the input at all.
 *
 * This exists instead of `check.hasKey` because `check.hasKey` costs roughly a microsecond per call
 * (it runs its attempts through a `try`/`catch`), and the predicates below run on every
 * interpolated value of every template on every render.
 *
 * @category Internal
 */
export function canHoldProperties(value) {
    return !!value && (typeof value === 'object' || typeof value === 'function');
}
/**
 * Checks if the input is an instance of {@link MinimalDefinitionWithInputs}.
 *
 * @category Internal
 */
export function isMinimalDefinitionWithInputs(value) {
    return canHoldProperties(value) && !!value._elementVirIsMinimalDefinitionWithInputs;
}
/**
 * Checks if the input is an object that has a `tagName` property. Used inside of the HTML tagged
 * template functions for checking if interpolated values should be treated as element tags.
 *
 * @category Internal
 */
export function hasTagName(value) {
    return canHoldProperties(value) && check.isString(value.tagName) && !!value.tagName;
}