interface OgMetaInjectionPluginOptions {
    customTags?: Array<{
        property: string;
        placeholder: string;
    }>;
    titlePlaceholder?: string;
    descriptionPlaceholder?: string;
    faviconPlaceholder?: string;
}
declare class OgMetaInjectionPlugin {
    private options;
    private defaultOgTags;
    private defaultTitlePlaceholder;
    private defaultDescriptionPlaceholder;
    private defaultFaviconPlaceholder;
    constructor(options?: OgMetaInjectionPluginOptions);
    apply(compiler: any): void;
}
export default OgMetaInjectionPlugin;