forked from vercel/next.js
/
path-match.ts
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/
path-match.ts
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import * as pathToRegexp from 'path-to-regexp'
export { pathToRegexp }
export default (customRoute = false) => {
return (path: string) => {
const keys: pathToRegexp.Key[] = []
const matcherOptions = {
sensitive: false,
delimiter: '/',
...(customRoute ? { strict: true } : undefined),
decode: decodeParam,
}
const matcherRegex = pathToRegexp.pathToRegexp(path, keys, matcherOptions)
const matcher = pathToRegexp.regexpToFunction(
matcherRegex,
keys,
matcherOptions
)
return (pathname: string | null | undefined, params?: any) => {
const res = pathname == null ? false : matcher(pathname)
if (!res) {
return false
}
if (customRoute) {
const newParams: { [k: string]: string } = {}
for (const key of keys) {
// unnamed matches should always be a number while named
// should be a string
if (typeof key.name === 'number') {
newParams[key.name + 1 + ''] = (res.params as any)[key.name + '']
delete (res.params as any)[key.name + '']
}
}
res.params = {
...res.params,
...newParams,
}
}
return { ...params, ...res.params }
}
}
}
function decodeParam(param: string) {
try {
return decodeURIComponent(param)
} catch (_) {
const err = new Error('failed to decode param')
// @ts-ignore DECODE_FAILED is handled
err.code = 'DECODE_FAILED'
throw err
}
}