@davidlj95/ngx-meta/esm2022/core/src/resolvers/metadata-resolver.mjs

Set your Angular site's metadata: standard meta tags, Open Graph, Twitter Cards, JSON-LD structured data and more. Supports SSR (and Angular Universal). Use a service. Use routes' data. Set it up in a flash! 🚀

import { inject } from '@angular/core';
import { injectDefaults } from '../defaults/defaults';
import { metadataJsonResolver } from './metadata-json-resolver';
import { isObject } from '../utils/is-object';
import { injectRouteMetadataStrategy } from '../routing/route-metadata-strategy';
import { _makeInjectionToken } from '../utils';
export const metadataResolver = () => _makeInjectionToken(ngDevMode ? 'Metadata Resolver' : 'MRes', () => {
    const jsonResolver = inject(metadataJsonResolver());
    const routeMetadataStrategy = injectRouteMetadataStrategy();
    const defaults = injectDefaults();
    return (values, resolverOptions) => {
        const value = jsonResolver(values, resolverOptions);
        const routeValue = jsonResolver(routeMetadataStrategy(), resolverOptions);
        const defaultValue = jsonResolver(defaults ?? undefined, resolverOptions);
        /* istanbul ignore next https://github.com/istanbuljs/istanbuljs/issues/719 */
        if (isObject(value) &&
            (isObject(routeValue) || isObject(defaultValue)) &&
            resolverOptions.objectMerge) {
            return {
                ...defaultValue,
                ...routeValue,
                ...value,
            };
        }
        return [value, routeValue, defaultValue].find((v) => v !== undefined);
    };
});
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