Patch-Source: https://github.com/supabase/pg_graphql/pull/473
--
From bd6d3c4af27e7961e0c3d4632289d155336e399e Mon Sep 17 00:00:00 2001
From: Jakub Jirutka <jakub@jirutka.cz>
Date: Mon, 18 Dec 2023 19:20:43 +0100
Subject: [PATCH] replace regex with std alternative

regex is a big dependency (adds over 1 MiB to the binary size) and it's
unnecessary for such a simple check.
---
 Cargo.lock     |  1 -
 Cargo.toml     |  1 -
 src/graphql.rs | 10 +++-------
 3 files changed, 3 insertions(+), 9 deletions(-)

diff --git a/Cargo.lock b/Cargo.lock
index bcd2ab8d..16ef67c8 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1105,7 +1105,6 @@ dependencies = [
  "pgrx",
  "pgrx-tests",
  "rand",
- "regex",
  "serde",
  "serde_json",
  "uuid",
diff --git a/Cargo.toml b/Cargo.toml
index 88d0995d..610767b3 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -22,7 +22,6 @@ itertools = "0.10.3"
 cached = "0.34.0"
 rand = "0.8"
 uuid = "1"
-regex = "1"
 base64 = "0.13"
 lazy_static = "1"
 bimap = { version = "0.6.3", features = ["serde"] }
diff --git a/src/graphql.rs b/src/graphql.rs
index 602153b3..f2a4e394 100644
--- a/src/graphql.rs
+++ b/src/graphql.rs
@@ -2,19 +2,15 @@ use crate::sql_types::*;
 use cached::proc_macro::cached;
 use cached::SizedCache;
 use itertools::Itertools;
-use lazy_static::lazy_static;
-use regex::Regex;
 use serde::Serialize;
 use std::collections::{HashMap, HashSet};
 use std::ops::Deref;
 use std::sync::Arc;
 
-lazy_static! {
-    static ref GRAPHQL_NAME_RE: Regex = Regex::new("^[_A-Za-z][_0-9A-Za-z]*$").unwrap();
-}
-
 fn is_valid_graphql_name(name: &str) -> bool {
-    GRAPHQL_NAME_RE.is_match(name)
+    !name.is_empty()
+        && name.starts_with(|c: char| c == '_' || c.is_ascii_alphabetic())
+        && name.chars().all(|c| c == '_' || c.is_ascii_alphanumeric())
 }
 
 fn to_base_type_name(name: &str, name_override: &Option<String>, inflect_names: bool) -> String {