From 50908b1f743de612cb66debd27dfcb5fe0539fb8 Mon Sep 17 00:00:00 2001
From: Hikaru Yoshino <osushicrusher@gmail.com>
Date: Mon, 15 Jul 2024 12:47:57 +0900
Subject: [PATCH 1/4] chore(test): add InvalidPropertyNameChars with enum flag

---
 packages/openapi-typescript/test/node-api.test.ts | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/packages/openapi-typescript/test/node-api.test.ts b/packages/openapi-typescript/test/node-api.test.ts
index ef29893b7..a751e8380 100644
--- a/packages/openapi-typescript/test/node-api.test.ts
+++ b/packages/openapi-typescript/test/node-api.test.ts
@@ -617,6 +617,10 @@ export type operations = Record<string, never>;`,
                 "x-enumNames": ["Uno", "Dos", "Tres"],
                 "x-enumDescriptions": ["El número uno", "El número dos", "El número tres"],
               },
+              InvalidPropertyNameChars: {
+                type: "string",
+                enum: ["=", "!=", ">", "~", "^", "TE=ST"],
+              }
             },
           },
         },
@@ -660,6 +664,8 @@ export interface components {
         XEnumVarnames: XEnumVarnames;
         /** @enum {number} */
         XEnumNames: XEnumNames;
+        /** @enum {string} */
+        InvalidPropertyNameChars: InvalidPropertyNameChars;
     };
     responses: never;
     parameters: never;
@@ -700,6 +706,14 @@ export enum XEnumNames {
     // El número tres
     Tres = 3
 }
+export enum InvalidPropertyNameChars {
+    "=" = "=",
+    "!=" = "!=",
+    ">" = ">",
+    "~" = "~",
+    "^" = "^",
+    TE_ST = "TE=ST"
+}
 export type operations = Record<string, never>;`,
         options: { enum: true },
       },

From ff6880e64df74da00857eac41e8154fbad8fb290 Mon Sep 17 00:00:00 2001
From: Hikaru Yoshino <osushicrusher@gmail.com>
Date: Mon, 15 Jul 2024 12:50:36 +0900
Subject: [PATCH 2/4] fix: Quote the name if it consists entirely of invalid
 characters and replace only the invalid characters with "_" if they are part
 of the name

---
 packages/openapi-typescript/src/lib/ts.ts | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/packages/openapi-typescript/src/lib/ts.ts b/packages/openapi-typescript/src/lib/ts.ts
index f0c3f9313..3b2c75555 100644
--- a/packages/openapi-typescript/src/lib/ts.ts
+++ b/packages/openapi-typescript/src/lib/ts.ts
@@ -285,7 +285,15 @@ export function tsEnumMember(value: string | number, metadata: { name?: string;
     } else if (name[0] === "-") {
       name = `ValueMinus${name.slice(1)}`;
     }
-    name = name.replace(JS_PROPERTY_INDEX_INVALID_CHARS_RE, "_");
+
+    const invalidCharMatch = name.match(JS_PROPERTY_INDEX_INVALID_CHARS_RE);
+    if (invalidCharMatch) {
+      if (invalidCharMatch[0] === name) {
+        name = `"${name}"`;
+      } else {
+        name = name.replace(JS_PROPERTY_INDEX_INVALID_CHARS_RE, "_");
+      }
+    }
   }
 
   let member: ts.EnumMember;

From 2f5eb63fdfaaaf6dcecadf1891eccda949148c22 Mon Sep 17 00:00:00 2001
From: Hikaru Yoshino <osushicrusher@gmail.com>
Date: Mon, 15 Jul 2024 13:13:26 +0900
Subject: [PATCH 3/4] chore: fix lint error

---
 packages/openapi-typescript/test/node-api.test.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/openapi-typescript/test/node-api.test.ts b/packages/openapi-typescript/test/node-api.test.ts
index a751e8380..96c226cca 100644
--- a/packages/openapi-typescript/test/node-api.test.ts
+++ b/packages/openapi-typescript/test/node-api.test.ts
@@ -620,7 +620,7 @@ export type operations = Record<string, never>;`,
               InvalidPropertyNameChars: {
                 type: "string",
                 enum: ["=", "!=", ">", "~", "^", "TE=ST"],
-              }
+              },
             },
           },
         },

From 59c60334fd6669b53b7353960659b001f0f6b1e8 Mon Sep 17 00:00:00 2001
From: Hikaru Yoshino <osushicrusher@gmail.com>
Date: Wed, 17 Jul 2024 00:14:37 +0900
Subject: [PATCH 4/4] chore: add changeset patch md

---
 .changeset/brave-lizards-juggle.md | 5 +++++
 1 file changed, 5 insertions(+)
 create mode 100644 .changeset/brave-lizards-juggle.md

diff --git a/.changeset/brave-lizards-juggle.md b/.changeset/brave-lizards-juggle.md
new file mode 100644
index 000000000..d6f6faf0d
--- /dev/null
+++ b/.changeset/brave-lizards-juggle.md
@@ -0,0 +1,5 @@
+---
+"openapi-typescript": patch
+---
+
+fix: Enum option cannot generate enums if values are not valid property names