js,checker: fix some modules build for v -b js self, fix or block check in ast.CallExpr (#12231)

vlib/sync/channels.js.v

@@ -0,0 +1,27 @@
+module sync
+
+pub struct Channel {
+	arr array
+}
+
+pub fn new_channel<T>(n u32) &Channel {
+	return &Channel{arr, new_array()}
+}
+
+pub fn (mut ch Channel) close() {}
+
+pub fn (mut ch Channel) push(src voidptr) {
+	#array_push(ch.val.arr,src)
+}
+
+pub fn (ch Channel) len() int {
+	return ch.arr.len
+}
+
+pub fn (ch Channel) closed() bool {
+	return false
+}
+
+pub fn (mut ch Channel) pop(dest voidptr) {
+	#dest.val = array_pop(ch.val.arr)
+}