docs: add api docs

Author: kazupon

src/h3.ts

@@ -226,7 +226,7 @@ export function setCookieLocale(
  *
  * @param {H3Event} event the {@link H3Event | H3} event
  * @param {PathOptions['lang']} options.lang the language tag, which is as default `'en-US'`. optional
- * @param {PathOptions['parser']} options.parser the path language parser, optional
+ * @param {PathOptions['parser']} options.parser the path language parser, default {@link pathLanguageParser}, optional
  *
  * @throws {RangeError} Throws the {@link RangeError} if the language in the path, that is not a well-formed BCP 47 language tag.
  *

src/hono.ts

@@ -234,7 +234,7 @@ export function setCookieLocale(
  *
  * @param {Context} context A {@link Context | Hono} context
  * @param {PathOptions['lang']} options.lang A language tag, which is as default `'en-US'`. optional
- * @param {PathOptions['parser']} options.parser A path language parser, optional
+ * @param {PathOptions['parser']} options.parser the path language parser, default {@link pathLanguageParser}, optional
  *
  * @throws {RangeError} Throws the {@link RangeError} if the language in the path, that is not a well-formed BCP 47 language tag.
  *

src/node.ts

@@ -289,7 +289,7 @@ function getURL(request: IncomingMessage): URL {
  *
  * @param {IncomingMessage} request the {@link IncomingMessage | request}
  * @param {PathOptions['lang']} options.lang the language tag, which is as default `'en-US'`. optional
- * @param {PathOptions['parser']} options.parser the path language parser, optional
+ * @param {PathOptions['parser']} options.parser the path language parser, default {@link pathLanguageParser}, optional
  *
  * @throws {RangeError} Throws the {@link RangeError} if the language in the path, that is not a well-formed BCP 47 language tag.
  *

src/shared.ts

@@ -98,6 +98,13 @@ export interface PathLanguageParser {
   (path: string | URL): string
 }
 
+/**
+ * create a parser, which can split with slash `/`
+ *
+ * @param index An index of locale, which is included in path
+ *
+ * @returns A return a parser, which has {@link PathLanguageParser} interface
+ */
 export function createPathIndexLanguageParser(
   index = 0,
 ): PathLanguageParser {
@@ -112,6 +119,12 @@ export function createPathIndexLanguageParser(
   }
 }
 
+/**
+ * A path parser that can get the zeroth part of a path split by `/` as local value
+ *
+ * @description
+ * - `/en/nest/about` -> `en`
+ */
 export let pathLanguageParser: PathLanguageParser = /* #__PURE__*/ createPathIndexLanguageParser()
 
 /**

src/web.ts

@@ -251,7 +251,7 @@ export function setCookieLocale(
  *
  * @param {Request} request the {@link Request | request}
  * @param {PathOptions['lang']} options.lang the language tag, which is as default `'en-US'`. optional
- * @param {PathOptions['parser']} options.parser the path language parser, optional
+ * @param {PathOptions['parser']} options.parser the path language parser, default {@link pathLanguageParser}, optional
  *
  * @throws {RangeError} Throws the {@link RangeError} if the language in the path, that is not a well-formed BCP 47 language tag.
  *