feat(ts-client): can specify error type pattern in cli

src/cli/generate.ts

@@ -12,6 +12,22 @@ const args = Command.create().description(`Generate a type safe GraphQL client.`
       `Directory path for where to output the generated TypeScript files.`,
     ),
   )
+  .parametersExclusive(
+    `schemaErrorType`,
+    $ =>
+      $.parameter(
+        `schemaErrorTypes`,
+        z.boolean().describe(
+          `Use the schema error types pattern. All object types whose name starts with "Error" will be considered to be error types. If you want to specify a custom name pattern then use the other parameter "schemaErrorTypePattern".`,
+        ),
+      )
+        .parameter(
+          `schemaErrorTypePattern`,
+          z.string().min(1).describe(
+            `Designate objects whose name matches this JS regular expression as being error types in your schema.`,
+          ),
+        ).default(`schemaErrorTypes`, true),
+  )
   .parameter(`format`, z.boolean().describe(`Format the generated files using dprint.`).default(true))
   .settings({
     parameters: {
@@ -24,4 +40,9 @@ await generateFiles({
   outputDirPath: args.output,
   schemaPath: args.schema,
   format: args.format,
+  errorTypeNamePattern: args.schemaErrorType._tag === `schemaErrorTypePattern`
+    ? new RegExp(args.schemaErrorType.value)
+    : args.schemaErrorType.value
+    ? /^Error.+/
+    : undefined,
 })