checker, builtin: prepage for builtin channels (#6262)

vlib/v/builder/compile.v

@@ -197,7 +197,7 @@ Did you forget to add vlib to the path? (Use @vlib for default vlib)')
 }
 
 pub fn (v &Builder) get_user_files() []string {
-	if v.pref.path in ['vlib/builtin', 'vlib/strconv', 'vlib/strings', 'vlib/hash'] {
+	if v.pref.path in ['vlib/builtin', 'vlib/strconv', 'vlib/strings', 'vlib/hash', 'vlib/time'] {
 		// This means we are building a builtin module with `v build-module vlib/strings` etc
 		// get_builtin_files() has already added the files in this module,
 		// do nothing here to avoid duplicate definition errors.

vlib/v/parser/parse_type.v

@@ -53,6 +53,9 @@ pub fn (mut p Parser) parse_map_type() table.Type {
 
 pub fn (mut p Parser) parse_chan_type() table.Type {
 	p.next()
+	if p.tok.kind != .name && p.tok.kind != .key_mut && p.tok.kind != .amp {
+		return table.chan_type
+	}
 	elem_type := p.parse_type()
 	idx := p.table.find_or_register_chan(elem_type)
 	return table.new_type(idx)

vlib/v/util/util.v

@@ -13,7 +13,7 @@ pub const (
 
 // math.bits is needed by strconv.ftoa
 pub const (
-	builtin_module_parts = ['math.bits', 'strconv', 'strconv.ftoa', 'hash', 'strings', 'builtin']
+	builtin_module_parts = ['math.bits', 'strconv', 'strconv.ftoa', 'hash', 'strings', 'time', 'builtin']
 )
 
 pub const (