| 1 | import { isAbsoluteUrl } from './isAbsoluteUrl'
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| 2 |
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| 3 | const withoutTrailingSlash = (url: string) => url.replace(/\/$/, '')
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| 4 | const withoutLeadingSlash = (url: string) => url.replace(/^\//, '')
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| 5 |
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| 6 | export function joinUrls(
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| 7 | base: string | undefined,
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| 8 | url: string | undefined,
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| 9 | ): string {
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| 10 | if (!base) {
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| 11 | return url!
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| 12 | }
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| 13 | if (!url) {
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| 14 | return base
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| 15 | }
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| 16 |
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| 17 | if (isAbsoluteUrl(url)) {
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| 18 | return url
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| 19 | }
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| 20 |
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| 21 | const delimiter = base.endsWith('/') || !url.startsWith('?') ? '/' : ''
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| 22 | base = withoutTrailingSlash(base)
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| 23 | url = withoutLeadingSlash(url)
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| 24 |
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| 25 | return `${base}${delimiter}${url}`
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| 26 | }
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