diff --git a/vlib/v/checker/assign.v b/vlib/v/checker/assign.v
index 8cd2f7e9f9..1e1aafa766 100644
--- a/vlib/v/checker/assign.v
+++ b/vlib/v/checker/assign.v
@@ -6,7 +6,7 @@ import v.ast
 import v.pref
 
 // TODO 600 line function
-pub fn (mut c Checker) assign_stmt(mut node ast.AssignStmt) {
+fn (mut c Checker) assign_stmt(mut node ast.AssignStmt) {
 	c.expected_type = ast.none_type // TODO a hack to make `x := if ... work`
 	defer {
 		c.expected_type = ast.void_type
diff --git a/vlib/v/checker/check_types.v b/vlib/v/checker/check_types.v
index 09e6e4459b..6420246152 100644
--- a/vlib/v/checker/check_types.v
+++ b/vlib/v/checker/check_types.v
@@ -6,7 +6,7 @@ module checker
 import v.ast
 
 // TODO: promote(), check_types(), symmetric_check() and check() overlap - should be rearranged
-pub fn (mut c Checker) check_types(got ast.Type, expected ast.Type) bool {
+fn (mut c Checker) check_types(got ast.Type, expected ast.Type) bool {
 	if got == expected {
 		return true
 	}
@@ -184,7 +184,7 @@ fn (c Checker) check_multiple_ptr_match(got ast.Type, expected ast.Type, param a
 	return true
 }
 
-pub fn (mut c Checker) check_expected_call_arg(got ast.Type, expected_ ast.Type, language ast.Language, arg ast.CallArg) ? {
+fn (mut c Checker) check_expected_call_arg(got ast.Type, expected_ ast.Type, language ast.Language, arg ast.CallArg) ? {
 	if got == 0 {
 		return error('unexpected 0 type')
 	}
@@ -298,7 +298,7 @@ fn (c Checker) check_same_module(got ast.Type, expected ast.Type) bool {
 	return false
 }
 
-pub fn (mut c Checker) check_basic(got ast.Type, expected ast.Type) bool {
+fn (mut c Checker) check_basic(got ast.Type, expected ast.Type) bool {
 	unalias_got, unalias_expected := c.table.unalias_num_type(got), c.table.unalias_num_type(expected)
 	if unalias_got.idx() == unalias_expected.idx() {
 		// this is returning true even if one type is a ptr
@@ -371,7 +371,7 @@ pub fn (mut c Checker) check_basic(got ast.Type, expected ast.Type) bool {
 	return false
 }
 
-pub fn (mut c Checker) check_matching_function_symbols(got_type_sym &ast.TypeSymbol, exp_type_sym &ast.TypeSymbol) bool {
+fn (mut c Checker) check_matching_function_symbols(got_type_sym &ast.TypeSymbol, exp_type_sym &ast.TypeSymbol) bool {
 	if c.pref.translated {
 		// TODO too open
 		return true
@@ -538,14 +538,14 @@ fn (mut c Checker) check_shift(mut node ast.InfixExpr, left_type_ ast.Type, righ
 	return left_type
 }
 
-pub fn (mut c Checker) promote_keeping_aliases(left_type ast.Type, right_type ast.Type, left_kind ast.Kind, right_kind ast.Kind) ast.Type {
+fn (mut c Checker) promote_keeping_aliases(left_type ast.Type, right_type ast.Type, left_kind ast.Kind, right_kind ast.Kind) ast.Type {
 	if left_type == right_type && left_kind == .alias && right_kind == .alias {
 		return left_type
 	}
 	return c.promote(left_type, right_type)
 }
 
-pub fn (mut c Checker) promote(left_type ast.Type, right_type ast.Type) ast.Type {
+fn (mut c Checker) promote(left_type ast.Type, right_type ast.Type) ast.Type {
 	if left_type.is_any_kind_of_pointer() {
 		if right_type.is_int() || c.pref.translated {
 			return left_type
@@ -614,7 +614,7 @@ fn (c &Checker) promote_num(left_type ast.Type, right_type ast.Type) ast.Type {
 	}
 }
 
-pub fn (mut c Checker) check_expected(got ast.Type, expected ast.Type) ! {
+fn (mut c Checker) check_expected(got ast.Type, expected ast.Type) ! {
 	if !c.check_types(got, expected) {
 		return error(c.expected_msg(got, expected))
 	}
@@ -626,7 +626,7 @@ fn (c &Checker) expected_msg(got ast.Type, expected ast.Type) string {
 	return 'expected `${exps}`, not `${gots}`'
 }
 
-pub fn (mut c Checker) symmetric_check(left ast.Type, right ast.Type) bool {
+fn (mut c Checker) symmetric_check(left ast.Type, right ast.Type) bool {
 	// allow direct int-literal assignment for pointers for now
 	// maybe in the future optionals should be used for that
 	if right.is_ptr() || right.is_pointer() {
@@ -759,7 +759,7 @@ fn (mut c Checker) infer_generic_struct_init_concrete_types(typ ast.Type, node a
 	return concrete_types
 }
 
-pub fn (mut c Checker) infer_fn_generic_types(func ast.Fn, mut node ast.CallExpr) {
+fn (mut c Checker) infer_fn_generic_types(func ast.Fn, mut node ast.CallExpr) {
 	mut inferred_types := []ast.Type{}
 	for gi, gt_name in func.generic_names {
 		// skip known types
diff --git a/vlib/v/checker/checker.v b/vlib/v/checker/checker.v
index 19aaa49b51..003134d562 100644
--- a/vlib/v/checker/checker.v
+++ b/vlib/v/checker/checker.v
@@ -417,7 +417,7 @@ fn (mut c Checker) check_valid_pascal_case(name string, identifier string, pos t
 	}
 }
 
-pub fn (mut c Checker) type_decl(node ast.TypeDecl) {
+fn (mut c Checker) type_decl(node ast.TypeDecl) {
 	match node {
 		ast.AliasTypeDecl { c.alias_type_decl(node) }
 		ast.FnTypeDecl { c.fn_type_decl(node) }
@@ -425,7 +425,7 @@ pub fn (mut c Checker) type_decl(node ast.TypeDecl) {
 	}
 }
 
-pub fn (mut c Checker) alias_type_decl(node ast.AliasTypeDecl) {
+fn (mut c Checker) alias_type_decl(node ast.AliasTypeDecl) {
 	// TODO Remove when `u8` isn't an alias in builtin anymore
 	if c.file.mod.name != 'builtin' {
 		c.check_valid_pascal_case(node.name, 'type alias', node.pos)
@@ -457,7 +457,7 @@ pub fn (mut c Checker) alias_type_decl(node ast.AliasTypeDecl) {
 	}
 }
 
-pub fn (mut c Checker) fn_type_decl(node ast.FnTypeDecl) {
+fn (mut c Checker) fn_type_decl(node ast.FnTypeDecl) {
 	c.check_valid_pascal_case(node.name, 'fn type', node.pos)
 	typ_sym := c.table.sym(node.typ)
 	fn_typ_info := typ_sym.info as ast.FnType
@@ -476,7 +476,7 @@ pub fn (mut c Checker) fn_type_decl(node ast.FnTypeDecl) {
 	}
 }
 
-pub fn (mut c Checker) sum_type_decl(node ast.SumTypeDecl) {
+fn (mut c Checker) sum_type_decl(node ast.SumTypeDecl) {
 	c.check_valid_pascal_case(node.name, 'sum type', node.pos)
 	mut names_used := []string{}
 	for variant in node.variants {
@@ -535,7 +535,7 @@ pub fn (mut c Checker) sum_type_decl(node ast.SumTypeDecl) {
 	}
 }
 
-pub fn (mut c Checker) expand_iface_embeds(idecl &ast.InterfaceDecl, level int, iface_embeds []ast.InterfaceEmbedding) []ast.InterfaceEmbedding {
+fn (mut c Checker) expand_iface_embeds(idecl &ast.InterfaceDecl, level int, iface_embeds []ast.InterfaceEmbedding) []ast.InterfaceEmbedding {
 	// eprintln('> expand_iface_embeds: idecl.name: $idecl.name | level: $level | iface_embeds.len: $iface_embeds.len')
 	if level > checker.iface_level_cutoff_limit {
 		c.error('too many interface embedding levels: ${level}, for interface `${idecl.name}`',
@@ -919,7 +919,7 @@ fn (mut c Checker) type_implements(typ ast.Type, interface_type ast.Type, pos to
 }
 
 // return the actual type of the expression, once the optional is handled
-pub fn (mut c Checker) check_expr_opt_call(expr ast.Expr, ret_type ast.Type) ast.Type {
+fn (mut c Checker) check_expr_opt_call(expr ast.Expr, ret_type ast.Type) ast.Type {
 	if expr is ast.CallExpr {
 		if expr.return_type.has_flag(.optional) || expr.return_type.has_flag(.result) {
 			return_modifier_kind := if expr.return_type.has_flag(.optional) {
@@ -987,7 +987,7 @@ pub fn (mut c Checker) check_expr_opt_call(expr ast.Expr, ret_type ast.Type) ast
 	return ret_type
 }
 
-pub fn (mut c Checker) check_or_expr(node ast.OrExpr, ret_type ast.Type, expr_return_type ast.Type) {
+fn (mut c Checker) check_or_expr(node ast.OrExpr, ret_type ast.Type, expr_return_type ast.Type) {
 	if node.kind == .propagate_option {
 		if c.table.cur_fn != unsafe { nil } && !c.table.cur_fn.return_type.has_flag(.optional)
 			&& !c.table.cur_fn.is_main && !c.table.cur_fn.is_test && !c.inside_const {
@@ -1122,7 +1122,7 @@ fn (mut c Checker) check_or_last_stmt(stmt ast.Stmt, ret_type ast.Type, expr_ret
 	}
 }
 
-pub fn (mut c Checker) selector_expr(mut node ast.SelectorExpr) ast.Type {
+fn (mut c Checker) selector_expr(mut node ast.SelectorExpr) ast.Type {
 	prevent_sum_type_unwrapping_once := c.prevent_sum_type_unwrapping_once
 	c.prevent_sum_type_unwrapping_once = false
 
@@ -1380,7 +1380,7 @@ pub fn (mut c Checker) selector_expr(mut node ast.SelectorExpr) ast.Type {
 	return ast.void_type
 }
 
-pub fn (mut c Checker) const_decl(mut node ast.ConstDecl) {
+fn (mut c Checker) const_decl(mut node ast.ConstDecl) {
 	if node.fields.len == 0 {
 		c.warn('const block must have at least 1 declaration', node.pos)
 	}
@@ -1443,7 +1443,7 @@ pub fn (mut c Checker) const_decl(mut node ast.ConstDecl) {
 	}
 }
 
-pub fn (mut c Checker) enum_decl(mut node ast.EnumDecl) {
+fn (mut c Checker) enum_decl(mut node ast.EnumDecl) {
 	c.check_valid_pascal_case(node.name, 'enum name', node.pos)
 	mut useen := []u64{}
 	mut iseen := []i64{}
@@ -2204,7 +2204,7 @@ fn (mut c Checker) stmts_ending_with_expression(stmts []ast.Stmt) {
 	c.scope_returns = false
 }
 
-pub fn (mut c Checker) unwrap_generic(typ ast.Type) ast.Type {
+fn (mut c Checker) unwrap_generic(typ ast.Type) ast.Type {
 	if typ.has_flag(.generic) && c.table.cur_fn != unsafe { nil } {
 		if t_typ := c.table.resolve_generic_to_concrete(typ, c.table.cur_fn.generic_names,
 			c.table.cur_concrete_types)
@@ -2566,7 +2566,7 @@ pub fn (mut c Checker) expr(node_ ast.Expr) ast.Type {
 // 	return ast.void_type
 // }
 
-pub fn (mut c Checker) cast_expr(mut node ast.CastExpr) ast.Type {
+fn (mut c Checker) cast_expr(mut node ast.CastExpr) ast.Type {
 	// Given: `Outside( Inside(xyz) )`,
 	//        node.expr_type: `Inside`
 	//        node.typ: `Outside`
@@ -2932,7 +2932,7 @@ fn (mut c Checker) at_expr(mut node ast.AtExpr) ast.Type {
 	return ast.string_type
 }
 
-pub fn (mut c Checker) ident(mut node ast.Ident) ast.Type {
+fn (mut c Checker) ident(mut node ast.Ident) ast.Type {
 	// TODO: move this
 	if c.const_deps.len > 0 {
 		mut name := node.name
@@ -3175,7 +3175,7 @@ pub fn (mut c Checker) ident(mut node ast.Ident) ast.Type {
 	return ast.void_type
 }
 
-pub fn (mut c Checker) concat_expr(mut node ast.ConcatExpr) ast.Type {
+fn (mut c Checker) concat_expr(mut node ast.ConcatExpr) ast.Type {
 	mut mr_types := []ast.Type{}
 	for expr in node.vals {
 		mr_types << c.expr(expr)
@@ -3278,7 +3278,7 @@ fn (mut c Checker) smartcast(expr_ ast.Expr, cur_type ast.Type, to_type_ ast.Typ
 	}
 }
 
-pub fn (mut c Checker) select_expr(mut node ast.SelectExpr) ast.Type {
+fn (mut c Checker) select_expr(mut node ast.SelectExpr) ast.Type {
 	node.is_expr = c.expected_type != ast.void_type
 	node.expected_type = c.expected_type
 	for branch in node.branches {
@@ -3336,7 +3336,7 @@ pub fn (mut c Checker) select_expr(mut node ast.SelectExpr) ast.Type {
 	return ast.bool_type
 }
 
-pub fn (mut c Checker) lock_expr(mut node ast.LockExpr) ast.Type {
+fn (mut c Checker) lock_expr(mut node ast.LockExpr) ast.Type {
 	expected_type := c.expected_type
 	if c.rlocked_names.len > 0 || c.locked_names.len > 0 {
 		c.error('nested `lock`/`rlock` not allowed', node.pos)
@@ -3379,7 +3379,7 @@ pub fn (mut c Checker) lock_expr(mut node ast.LockExpr) ast.Type {
 	return ret_type
 }
 
-pub fn (mut c Checker) unsafe_expr(mut node ast.UnsafeExpr) ast.Type {
+fn (mut c Checker) unsafe_expr(mut node ast.UnsafeExpr) ast.Type {
 	c.inside_unsafe = true
 	t := c.expr(node.expr)
 	c.inside_unsafe = false
@@ -3439,7 +3439,7 @@ fn (c &Checker) has_return(stmts []ast.Stmt) ?bool {
 	return none
 }
 
-pub fn (mut c Checker) postfix_expr(mut node ast.PostfixExpr) ast.Type {
+fn (mut c Checker) postfix_expr(mut node ast.PostfixExpr) ast.Type {
 	typ := c.unwrap_generic(c.expr(node.expr))
 	typ_sym := c.table.sym(typ)
 	is_non_void_pointer := (typ.is_ptr() || typ.is_pointer()) && typ_sym.kind != .voidptr
@@ -3456,7 +3456,7 @@ pub fn (mut c Checker) postfix_expr(mut node ast.PostfixExpr) ast.Type {
 	return typ
 }
 
-pub fn (mut c Checker) mark_as_referenced(mut node ast.Expr, as_interface bool) {
+fn (mut c Checker) mark_as_referenced(mut node ast.Expr, as_interface bool) {
 	match mut node {
 		ast.Ident {
 			if mut node.obj is ast.Var {
@@ -3509,7 +3509,7 @@ pub fn (mut c Checker) mark_as_referenced(mut node ast.Expr, as_interface bool)
 	}
 }
 
-pub fn (mut c Checker) get_base_name(node &ast.Expr) string {
+fn (mut c Checker) get_base_name(node &ast.Expr) string {
 	match node {
 		ast.Ident {
 			return node.name
@@ -3526,7 +3526,7 @@ pub fn (mut c Checker) get_base_name(node &ast.Expr) string {
 	}
 }
 
-pub fn (mut c Checker) prefix_expr(mut node ast.PrefixExpr) ast.Type {
+fn (mut c Checker) prefix_expr(mut node ast.PrefixExpr) ast.Type {
 	old_inside_ref_lit := c.inside_ref_lit
 	c.inside_ref_lit = c.inside_ref_lit || node.op == .amp
 	right_type := c.expr(node.right)
@@ -3688,7 +3688,7 @@ fn (mut c Checker) check_index(typ_sym &ast.TypeSymbol, index ast.Expr, index_ty
 	}
 }
 
-pub fn (mut c Checker) index_expr(mut node ast.IndexExpr) ast.Type {
+fn (mut c Checker) index_expr(mut node ast.IndexExpr) ast.Type {
 	mut typ := c.expr(node.left)
 	if typ == 0 {
 		c.error('unknown type for expression `${node.left}`', node.pos)
@@ -3807,7 +3807,7 @@ pub fn (mut c Checker) index_expr(mut node ast.IndexExpr) ast.Type {
 // `.green` or `Color.green`
 // If a short form is used, `expected_type` needs to be an enum
 // with this value.
-pub fn (mut c Checker) enum_val(mut node ast.EnumVal) ast.Type {
+fn (mut c Checker) enum_val(mut node ast.EnumVal) ast.Type {
 	mut typ_idx := if node.enum_name == '' {
 		// Get the type of the enum without enum name by looking at the expected type.
 		// e.g. `set_color(.green)`, V knows that `Green` is the expected type.
@@ -3875,7 +3875,7 @@ pub fn (mut c Checker) enum_val(mut node ast.EnumVal) ast.Type {
 	return typ
 }
 
-pub fn (mut c Checker) chan_init(mut node ast.ChanInit) ast.Type {
+fn (mut c Checker) chan_init(mut node ast.ChanInit) ast.Type {
 	if node.typ != 0 {
 		info := c.table.sym(node.typ).chan_info()
 		node.elem_type = info.elem_type
@@ -3895,7 +3895,7 @@ pub fn (mut c Checker) chan_init(mut node ast.ChanInit) ast.Type {
 	}
 }
 
-pub fn (mut c Checker) offset_of(node ast.OffsetOf) ast.Type {
+fn (mut c Checker) offset_of(node ast.OffsetOf) ast.Type {
 	sym := c.table.final_sym(node.struct_type)
 	if sym.kind != .struct_ {
 		c.error('first argument of __offsetof must be struct', node.pos)
@@ -3907,7 +3907,7 @@ pub fn (mut c Checker) offset_of(node ast.OffsetOf) ast.Type {
 	return ast.u32_type
 }
 
-pub fn (mut c Checker) check_dup_keys(node &ast.MapInit, i int) {
+fn (mut c Checker) check_dup_keys(node &ast.MapInit, i int) {
 	key_i := node.keys[i]
 	if key_i is ast.StringLiteral {
 		for j in 0 .. i {
@@ -3931,30 +3931,30 @@ pub fn (mut c Checker) check_dup_keys(node &ast.MapInit, i int) {
 }
 
 // call this *before* calling error or warn
-pub fn (mut c Checker) add_error_detail(s string) {
+fn (mut c Checker) add_error_detail(s string) {
 	c.error_details << s
 }
 
-pub fn (mut c Checker) add_error_detail_with_pos(msg string, pos token.Pos) {
+fn (mut c Checker) add_error_detail_with_pos(msg string, pos token.Pos) {
 	c.add_error_detail(util.formatted_error('details:', msg, c.file.path, pos))
 }
 
-pub fn (mut c Checker) add_instruction_for_optional_type() {
+fn (mut c Checker) add_instruction_for_optional_type() {
 	c.add_error_detail_with_pos('prepend ? before the declaration of the return type of `${c.table.cur_fn.name}`',
 		c.table.cur_fn.return_type_pos)
 }
 
-pub fn (mut c Checker) add_instruction_for_result_type() {
+fn (mut c Checker) add_instruction_for_result_type() {
 	c.add_error_detail_with_pos('prepend ! before the declaration of the return type of `${c.table.cur_fn.name}`',
 		c.table.cur_fn.return_type_pos)
 }
 
-pub fn (mut c Checker) warn(s string, pos token.Pos) {
+fn (mut c Checker) warn(s string, pos token.Pos) {
 	allow_warnings := !(c.pref.is_prod || c.pref.warns_are_errors) // allow warnings only in dev builds
 	c.warn_or_error(s, pos, allow_warnings)
 }
 
-pub fn (mut c Checker) error(message string, pos token.Pos) {
+fn (mut c Checker) error(message string, pos token.Pos) {
 	$if checker_exit_on_first_error ? {
 		eprintln('\n\n>> checker error: ${message}, pos: ${pos}')
 		print_backtrace()
@@ -4000,7 +4000,7 @@ fn (c &Checker) check_struct_signature(from ast.Struct, to ast.Struct) bool {
 	return true
 }
 
-pub fn (mut c Checker) note(message string, pos token.Pos) {
+fn (mut c Checker) note(message string, pos token.Pos) {
 	if c.pref.message_limit >= 0 && c.nr_notices >= c.pref.message_limit {
 		c.should_abort = true
 		return
@@ -4168,7 +4168,7 @@ fn (mut c Checker) ensure_type_exists(typ ast.Type, pos token.Pos) ? {
 	}
 }
 
-pub fn (mut c Checker) fail_if_unreadable(expr ast.Expr, typ ast.Type, what string) {
+fn (mut c Checker) fail_if_unreadable(expr ast.Expr, typ ast.Type, what string) {
 	mut pos := token.Pos{}
 	match expr {
 		ast.Ident {
@@ -4233,7 +4233,7 @@ fn (mut c Checker) goto_label(node ast.GotoLabel) {
 	}
 }
 
-pub fn (mut c Checker) goto_stmt(node ast.GotoStmt) {
+fn (mut c Checker) goto_stmt(node ast.GotoStmt) {
 	if c.inside_defer {
 		c.error('goto is not allowed in defer statements', node.pos)
 	}
diff --git a/vlib/v/checker/containers.v b/vlib/v/checker/containers.v
index f1dce5e3d5..bb00d2b34c 100644
--- a/vlib/v/checker/containers.v
+++ b/vlib/v/checker/containers.v
@@ -5,7 +5,7 @@ module checker
 import v.ast
 import v.token
 
-pub fn (mut c Checker) array_init(mut node ast.ArrayInit) ast.Type {
+fn (mut c Checker) array_init(mut node ast.ArrayInit) ast.Type {
 	mut elem_type := ast.void_type
 	// `x := []string{}` (the type was set in the parser)
 	// TODO type is not set for fixed arrays
@@ -269,14 +269,14 @@ fn (mut c Checker) check_array_init_para_type(para string, expr ast.Expr, pos to
 	}
 }
 
-pub fn (mut c Checker) ensure_sumtype_array_has_default_value(node ast.ArrayInit) {
+fn (mut c Checker) ensure_sumtype_array_has_default_value(node ast.ArrayInit) {
 	sym := c.table.sym(node.elem_type)
 	if sym.kind == .sum_type && !node.has_default {
 		c.error('cannot initialize sum type array without default value', node.pos)
 	}
 }
 
-pub fn (mut c Checker) map_init(mut node ast.MapInit) ast.Type {
+fn (mut c Checker) map_init(mut node ast.MapInit) ast.Type {
 	// `map = {}`
 	if node.keys.len == 0 && node.vals.len == 0 && node.typ == 0 {
 		sym := c.table.sym(c.expected_type)
diff --git a/vlib/v/checker/fn.v b/vlib/v/checker/fn.v
index 1deb7f7a4e..b4fc2765dd 100644
--- a/vlib/v/checker/fn.v
+++ b/vlib/v/checker/fn.v
@@ -445,7 +445,7 @@ fn (mut c Checker) anon_fn(mut node ast.AnonFn) ast.Type {
 	return node.typ
 }
 
-pub fn (mut c Checker) call_expr(mut node ast.CallExpr) ast.Type {
+fn (mut c Checker) call_expr(mut node ast.CallExpr) ast.Type {
 	// Check whether the inner function definition is before the call
 	if var := node.scope.find_var(node.name) {
 		if var.expr is ast.AnonFn && var.pos.pos > node.pos.pos {
@@ -514,7 +514,7 @@ pub fn (mut c Checker) call_expr(mut node ast.CallExpr) ast.Type {
 	return typ
 }
 
-pub fn (mut c Checker) builtin_args(mut node ast.CallExpr, fn_name string, func ast.Fn) {
+fn (mut c Checker) builtin_args(mut node ast.CallExpr, fn_name string, func ast.Fn) {
 	c.inside_println_arg = true
 	c.expected_type = ast.string_type
 	node.args[0].typ = c.expr(node.args[0].expr)
@@ -546,7 +546,7 @@ pub fn (mut c Checker) builtin_args(mut node ast.CallExpr, fn_name string, func
 	*/
 }
 
-pub fn (mut c Checker) fn_call(mut node ast.CallExpr, mut continue_check &bool) ast.Type {
+fn (mut c Checker) fn_call(mut node ast.CallExpr, mut continue_check &bool) ast.Type {
 	fn_name := node.name
 	if fn_name == 'main' {
 		c.error('the `main` function cannot be called in the program', node.pos)
@@ -1287,7 +1287,7 @@ pub fn (mut c Checker) fn_call(mut node ast.CallExpr, mut continue_check &bool)
 	return func.return_type
 }
 
-pub fn (mut c Checker) method_call(mut node ast.CallExpr) ast.Type {
+fn (mut c Checker) method_call(mut node ast.CallExpr) ast.Type {
 	left_type := c.expr(node.left)
 	if left_type == ast.void_type {
 		c.error('cannot call a method using an invalid expression', node.pos)
@@ -1991,7 +1991,7 @@ fn (mut c Checker) post_process_generic_fns() {
 	}
 }
 
-pub fn (mut c Checker) check_expected_arg_count(mut node ast.CallExpr, f &ast.Fn) ! {
+fn (mut c Checker) check_expected_arg_count(mut node ast.CallExpr, f &ast.Fn) ! {
 	nr_args := node.args.len
 	nr_params := if node.is_method && f.params.len > 0 { f.params.len - 1 } else { f.params.len }
 	mut min_required_params := f.params.len
diff --git a/vlib/v/checker/if.v b/vlib/v/checker/if.v
index d9997cbe6c..2749b5ae86 100644
--- a/vlib/v/checker/if.v
+++ b/vlib/v/checker/if.v
@@ -6,7 +6,7 @@ import v.ast
 import v.pref
 import v.token
 
-pub fn (mut c Checker) if_expr(mut node ast.IfExpr) ast.Type {
+fn (mut c Checker) if_expr(mut node ast.IfExpr) ast.Type {
 	if_kind := if node.is_comptime { '\$if' } else { 'if' }
 	mut node_is_expr := false
 	if node.branches.len > 0 && node.has_else {
diff --git a/vlib/v/checker/infix.v b/vlib/v/checker/infix.v
index eac47a6148..c9f3564265 100644
--- a/vlib/v/checker/infix.v
+++ b/vlib/v/checker/infix.v
@@ -4,7 +4,7 @@ import v.ast
 import v.pref
 import v.token
 
-pub fn (mut c Checker) infix_expr(mut node ast.InfixExpr) ast.Type {
+fn (mut c Checker) infix_expr(mut node ast.InfixExpr) ast.Type {
 	former_expected_type := c.expected_type
 	defer {
 		c.expected_type = former_expected_type
@@ -715,7 +715,7 @@ fn (mut c Checker) check_div_mod_by_zero(expr ast.Expr, op_kind token.Kind) {
 	}
 }
 
-pub fn (mut c Checker) invalid_operator_error(op token.Kind, left_type ast.Type, right_type ast.Type, pos token.Pos) {
+fn (mut c Checker) invalid_operator_error(op token.Kind, left_type ast.Type, right_type ast.Type, pos token.Pos) {
 	left_name := c.table.type_to_str(left_type)
 	right_name := c.table.type_to_str(right_type)
 	c.error('invalid operator `${op}` to `${left_name}` and `${right_name}`', pos)
diff --git a/vlib/v/checker/interface.v b/vlib/v/checker/interface.v
index 9913177dbd..4b84a16b47 100644
--- a/vlib/v/checker/interface.v
+++ b/vlib/v/checker/interface.v
@@ -6,7 +6,7 @@ module checker
 import v.ast
 import v.token
 
-pub fn (mut c Checker) interface_decl(mut node ast.InterfaceDecl) {
+fn (mut c Checker) interface_decl(mut node ast.InterfaceDecl) {
 	c.check_valid_pascal_case(node.name, 'interface name', node.pos)
 	mut decl_sym := c.table.sym(node.typ)
 	is_js := node.language == .js
diff --git a/vlib/v/checker/match.v b/vlib/v/checker/match.v
index 34cf4087ac..3c6da9aef8 100644
--- a/vlib/v/checker/match.v
+++ b/vlib/v/checker/match.v
@@ -6,7 +6,7 @@ import v.util
 import v.token
 import strings
 
-pub fn (mut c Checker) match_expr(mut node ast.MatchExpr) ast.Type {
+fn (mut c Checker) match_expr(mut node ast.MatchExpr) ast.Type {
 	node.is_expr = c.expected_type != ast.void_type
 	node.expected_type = c.expected_type
 	if mut node.cond is ast.ParExpr && !c.pref.translated && !c.file.is_translated {
diff --git a/vlib/v/checker/return.v b/vlib/v/checker/return.v
index c16f68c40c..8324a9e0c2 100644
--- a/vlib/v/checker/return.v
+++ b/vlib/v/checker/return.v
@@ -6,7 +6,7 @@ import v.ast
 import v.pref
 
 // TODO: non deferred
-pub fn (mut c Checker) return_stmt(mut node ast.Return) {
+fn (mut c Checker) return_stmt(mut node ast.Return) {
 	if c.table.cur_fn == unsafe { nil } {
 		return
 	}
@@ -235,7 +235,7 @@ pub fn (mut c Checker) return_stmt(mut node ast.Return) {
 	}
 }
 
-pub fn (mut c Checker) find_unreachable_statements_after_noreturn_calls(stmts []ast.Stmt) {
+fn (mut c Checker) find_unreachable_statements_after_noreturn_calls(stmts []ast.Stmt) {
 	mut prev_stmt_was_noreturn_call := false
 	for stmt in stmts {
 		if stmt is ast.ExprStmt {
diff --git a/vlib/v/checker/str.v b/vlib/v/checker/str.v
index c4014991c2..a7af38ae33 100644
--- a/vlib/v/checker/str.v
+++ b/vlib/v/checker/str.v
@@ -6,7 +6,7 @@ module checker
 import v.ast
 import v.token
 
-pub fn (mut c Checker) get_default_fmt(ftyp ast.Type, typ ast.Type) u8 {
+fn (mut c Checker) get_default_fmt(ftyp ast.Type, typ ast.Type) u8 {
 	if ftyp.has_flag(.optional) || ftyp.has_flag(.result) {
 		return `s`
 	} else if typ.is_float() {
@@ -40,7 +40,7 @@ pub fn (mut c Checker) get_default_fmt(ftyp ast.Type, typ ast.Type) u8 {
 	}
 }
 
-pub fn (mut c Checker) string_inter_lit(mut node ast.StringInterLiteral) ast.Type {
+fn (mut c Checker) string_inter_lit(mut node ast.StringInterLiteral) ast.Type {
 	inside_println_arg_save := c.inside_println_arg
 	c.inside_println_arg = true
 	for i, expr in node.exprs {
@@ -115,7 +115,7 @@ const unicode_lit_overflow_message = 'unicode character exceeds max allowed valu
 
 // unicode character literals are limited to a maximum value of 0x10ffff
 // https://stackoverflow.com/questions/52203351/why-unicode-is-restricted-to-0x10ffff
-pub fn (mut c Checker) string_lit(mut node ast.StringLiteral) ast.Type {
+fn (mut c Checker) string_lit(mut node ast.StringLiteral) ast.Type {
 	mut idx := 0
 	for idx < node.val.len {
 		match node.val[idx] {
@@ -165,7 +165,7 @@ pub fn (mut c Checker) string_lit(mut node ast.StringLiteral) ast.Type {
 	return ast.string_type
 }
 
-pub fn (mut c Checker) int_lit(mut node ast.IntegerLiteral) ast.Type {
+fn (mut c Checker) int_lit(mut node ast.IntegerLiteral) ast.Type {
 	if node.val.len < 17 {
 		// can not be a too large number, no need for more expensive checks
 		return ast.int_literal_type
diff --git a/vlib/v/checker/struct.v b/vlib/v/checker/struct.v
index 40e4843add..b68e21a841 100644
--- a/vlib/v/checker/struct.v
+++ b/vlib/v/checker/struct.v
@@ -5,7 +5,7 @@ module checker
 import v.ast
 import v.util
 
-pub fn (mut c Checker) struct_decl(mut node ast.StructDecl) {
+fn (mut c Checker) struct_decl(mut node ast.StructDecl) {
 	mut struct_sym, struct_typ_idx := c.table.find_sym_and_type_idx(node.name)
 	mut has_generic_types := false
 	if mut struct_sym.info is ast.Struct {
@@ -231,7 +231,7 @@ fn minify_sort_fn(a &ast.StructField, b &ast.StructField) int {
 	}
 }
 
-pub fn (mut c Checker) struct_init(mut node ast.StructInit) ast.Type {
+fn (mut c Checker) struct_init(mut node ast.StructInit) ast.Type {
 	if node.typ == ast.void_type {
 		// short syntax `foo(key:val, key2:val2)`
 		if c.expected_type == ast.void_type {