import { HeadPlugin, HeadTag, BaseMeta, MetaFlatInput, Head, MaybeArray, HeadSafe, HeadEntry, TemplateParams } from '@unhead/schema'; type Arrayable = T | Array; declare function asArray(value: Arrayable): T[]; declare const SelfClosingTags: string[]; declare const TagsWithInnerContent: string[]; declare const HasElementTags: string[]; declare const ValidHeadTags: string[]; declare const UniqueTags: string[]; declare const TagConfigKeys: string[]; declare const IsBrowser: boolean; declare const composableNames: string[]; declare function defineHeadPlugin(plugin: HeadPlugin): HeadPlugin; declare function hashCode(s: string): string; declare function hashTag(tag: HeadTag): string; declare function tagDedupeKey(tag: T, fn?: (key: string) => boolean): string | false; declare function resolveTitleTemplate(template: string | ((title?: string) => string | null) | null, title?: string): string | null; declare function resolveMetaKeyType(key: string): keyof BaseMeta; declare function resolveMetaKeyValue(key: string): string; declare function resolvePackedMetaObjectValue(value: string, key: string): string; /** * Converts a flat meta object into an array of meta entries. * @param input */ declare function unpackMeta(input: T): Required['meta']; /** * Convert an array of meta entries to a flat object. * @param inputs */ declare function packMeta['meta']>(inputs: T): MetaFlatInput; declare function whitelistSafeInput(input: Record>>): HeadSafe; declare function normaliseTag(tagName: T['tag'], input: HeadTag['props'] | string, e: HeadEntry): Promise; declare function normaliseClassProp(v: Required['htmlAttrs']['class']>): string; declare function normaliseProps(props: T['props'], virtual?: boolean): Promise; declare const TagEntityBits = 10; declare function normaliseEntryTags(e: HeadEntry): Promise; declare const TAG_WEIGHTS: { readonly base: -10; readonly title: 10; }; declare const TAG_ALIASES: { readonly critical: -80; readonly high: -10; readonly low: 20; }; declare function tagWeight(tag: T): any; declare const SortModifiers: { prefix: string; offset: number; }[]; declare function processTemplateParams(s: string, p: TemplateParams, sep: string): string; export { type Arrayable, HasElementTags, IsBrowser, SelfClosingTags, SortModifiers, TAG_ALIASES, TAG_WEIGHTS, TagConfigKeys, TagEntityBits, TagsWithInnerContent, UniqueTags, ValidHeadTags, asArray, composableNames, defineHeadPlugin, hashCode, hashTag, normaliseClassProp, normaliseEntryTags, normaliseProps, normaliseTag, packMeta, processTemplateParams, resolveMetaKeyType, resolveMetaKeyValue, resolvePackedMetaObjectValue, resolveTitleTemplate, tagDedupeKey, tagWeight, unpackMeta, whitelistSafeInput };