70 lines
1.5 KiB
TypeScript
70 lines
1.5 KiB
TypeScript
export const EXTERNAL_URL_RE = /^[a-z]+:/i
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export const PATHNAME_PROTOCOL_RE = /^pathname:\/\//
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export const APPEARANCE_KEY = 'vuepress-theme-appearance'
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export const HASH_RE = /#.*$/
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export const EXT_RE = /(index)?\.(md|html)$/
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export const inBrowser = typeof document !== 'undefined'
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export function isActive(
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currentPath: string,
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matchPath?: string,
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asRegex = false
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): boolean {
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if (matchPath === undefined) {
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return false
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}
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currentPath = normalize(`/${currentPath.replace(/^\//, '')}`)
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if (asRegex) {
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return new RegExp(matchPath).test(currentPath)
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}
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if (normalize(matchPath) !== currentPath) {
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return false
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}
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const hashMatch = matchPath.match(HASH_RE)
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if (hashMatch) {
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return (inBrowser ? location.hash : '') === hashMatch[0]
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}
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return true
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}
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export function normalize(path: string): string {
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return decodeURI(path).replace(HASH_RE, '').replace(EXT_RE, '')
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}
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export function isExternal(path: string): boolean {
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return EXTERNAL_URL_RE.test(path)
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}
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export function throttleAndDebounce(fn: () => void, delay: number): () => void {
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// eslint-disable-next-line no-undef
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let timeoutId: NodeJS.Timeout
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let called = false
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return () => {
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if (timeoutId) {
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clearTimeout(timeoutId)
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}
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if (!called) {
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fn()
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called = true
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setTimeout(() => {
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called = false
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}, delay)
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} else {
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timeoutId = setTimeout(fn, delay)
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}
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}
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}
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export function ensureStartingSlash(path: string): string {
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return /^\//.test(path) ? path : `/${path}`
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}
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