Function compileDecodeCharMap

packages/router-core/src/path.ts:205–218

(
  pathParamsAllowedCharacters: ReadonlyArray<string>,
)

 * This should be called once at router initialization.
 */
export function compileDecodeCharMap(
  pathParamsAllowedCharacters: ReadonlyArray<string>,
) {
  const charMap = new Map(
    pathParamsAllowedCharacters.map((char) => [encodeURIComponent(char), char]),
  )
  // Escape special regex characters and join with |
  const pattern = Array.from(charMap.keys())
    .map((key) => key.replace(/[.*+?^${}()|[\]\\]/g, '\\$&'))
    .join('|')
  const regex = new RegExp(pattern, 'g')
  return (encoded: string) =>
    encoded.replace(regex, (match) => charMap.get(match) ?? match)
}

interface InterpolatePathOptions {
  path?: string