simplify

Author: Uzlopak

src/llhttp/constants.ts

@@ -203,14 +203,18 @@ export const HEADER_STATE = {
   TRANSFER_ENCODING_CHUNKED: 8,
 } as const;
 
+export const METHODS_HTTP1_HEAD = {
+  HEAD: 2,
+} as const;
+
 /**
  * HTTP methods as defined by RFC-9110 and other specifications.
  * @see https://httpwg.org/specs/rfc9110.html#method.definitions
  */
 export const METHODS_BASIC_HTTP = {
   DELETE: 0,
   GET: 1,
-  HEAD: 2,
+  ...METHODS_HTTP1_HEAD,
   POST: 3,
   PUT: 4,
   CONNECT: 5,
@@ -332,13 +336,6 @@ export const METHODS = {
   ...METHODS_RTSP,
 } as const;
 
-export const H_METHOD_MAP: Simplify<Pick<
-  typeof METHODS_BASIC_HTTP,
-  "HEAD">
-> = {
-  HEAD: 2,
-} as const;
-
 // ALPHA: https://tools.ietf.org/html/rfc5234#appendix-B.1
 export const ALPHA = [
   "A", "a", "B", "b", "C", "c", "D", "d",
@@ -522,9 +519,9 @@ export default {
   SPECIAL_HEADERS,
   METHODS,
   METHODS_HTTP,
+  METHODS_HTTP1_HEAD,
   METHODS_HTTP1,
   METHODS_HTTP2,
   METHODS_ICECAST,
   METHODS_RTSP,
-  H_METHOD_MAP,
 }

src/llhttp/http.ts

@@ -6,11 +6,11 @@ import Node = source.node.Node;
 
 import {
   type IntDict,
-  CONNECTION_TOKEN_CHARS, ERROR, FINISH, FLAGS, H_METHOD_MAP, HEADER_CHARS,
+  CONNECTION_TOKEN_CHARS, ERROR, FINISH, FLAGS, HEADER_CHARS,
   HEADER_STATE, HEX_MAP, HTAB_SP_VCHAR_OBS_TEXT,
   LENIENT_FLAGS,
   MAJOR,
-  METHODS, METHODS_HTTP, METHODS_ICECAST, METHODS_RTSP,
+  METHODS, METHODS_HTTP, METHODS_HTTP1_HEAD, METHODS_ICECAST, METHODS_RTSP,
   MINOR, NUM_MAP, QDTEXT, SPECIAL_HEADERS,
   TOKEN, TYPE,
 } from './constants';
@@ -285,7 +285,7 @@ export class HTTP {
       .otherwise(this.update('type', TYPE.REQUEST, 'start_req'));
 
     n('req_or_res_method')
-      .select(H_METHOD_MAP, this.store('method',
+      .select(METHODS_HTTP1_HEAD, this.store('method',
         this.update('type', TYPE.REQUEST, this.span.method.end(
           this.invokePausable('on_method_complete', ERROR.CB_METHOD_COMPLETE, n('req_first_space_before_url')),
         )),