Add constant arrays of enum values for typescript

Author: gwax

Diff for: src/server/templates/typescript.ts

@@ -391,6 +391,26 @@ export type Database = {
     })}
 }
 
+export const Constants = {
+  ${schemas
+    .sort(({ name: a }, { name: b }) => a.localeCompare(b))
+    .map((schema) => {
+      const schemaEnums = types
+        .filter((type) => type.schema === schema.name && type.enums.length > 0)
+        .sort(({ name: a }, { name: b }) => a.localeCompare(b))
+      return `${JSON.stringify(schema.name)}: {
+          Enums: {
+            ${schemaEnums.map(
+              (enum_) =>
+                `${JSON.stringify(enum_.name)}: [${enum_.enums
+                  .map((variant) => JSON.stringify(variant))
+                  .join(', ')}]`
+            )}
+          }
+        }`
+    })}
+} as const
+
 type DefaultSchema = Database[Extract<keyof Database, ${JSON.stringify(GENERATE_TYPES_DEFAULT_SCHEMA)}>]
 
 export type Tables<

Diff for: test/server/typegen.ts

@@ -431,6 +431,15 @@ test('typegen: typescript', async () => {
       }
     }
 
+    export const Constants = {
+      public: {
+        Enums: {
+          meme_status: ["new", "old", "retired"],
+          user_status: ["ACTIVE", "INACTIVE"],
+        },
+      },
+    } as const
+
     type DefaultSchema = Database[Extract<keyof Database, "public">]
 
     export type Tables<
@@ -986,6 +995,15 @@ test('typegen w/ one-to-one relationships', async () => {
       }
     }
 
+    export const Constants = {
+      public: {
+        Enums: {
+          meme_status: ["new", "old", "retired"],
+          user_status: ["ACTIVE", "INACTIVE"],
+        },
+      },
+    } as const
+
     type DefaultSchema = Database[Extract<keyof Database, "public">]
 
     export type Tables<
@@ -1541,6 +1559,15 @@ test('typegen: typescript w/ one-to-one relationships', async () => {
       }
     }
 
+    export const Constants = {
+      public: {
+        Enums: {
+          meme_status: ["new", "old", "retired"],
+          user_status: ["ACTIVE", "INACTIVE"],
+        },
+      },
+    } as const
+
     type DefaultSchema = Database[Extract<keyof Database, "public">]
 
     export type Tables<