Allow disabling watch from cli (#7781)

* Allow disabling watch from cli

* add tests

* add changeset

Co-authored-by: Saihajpreet Singh <saihajpreet.singh@gmail.com>

.changeset/serious-needles-impress.md

@@ -0,0 +1,9 @@
+---
+'@graphql-codegen/cli': patch
+---
+
+Allow to disable watch mode from CLI to overwrite the config. Now you can do:
+
+```bash
+$ graphql-codegen --watch=false
+```

packages/graphql-codegen-cli/src/config.ts

@@ -265,7 +265,7 @@ export function updateContextWithCliFlags(context: CodegenContext, cliFlags: Yam
     configFilePath: context.filepath,
   };
 
-  if (cliFlags.watch) {
+  if (cliFlags.watch !== undefined) {
     config.watch = cliFlags.watch;
   }
 

packages/graphql-codegen-cli/tests/cli-flags.spec.ts

@@ -92,7 +92,7 @@ describe('CLI Flags', () => {
     expect(config.overwrite).not.toBeTruthy();
   });
 
-  it('Should overwrite watch config using cli flags', async () => {
+  it('Should overwrite watch config using cli flag to true', async () => {
     mockConfig(`
         schema: schema.graphql
         watch: false
@@ -106,6 +106,20 @@ describe('CLI Flags', () => {
     expect(config.watch).toBeTruthy();
   });
 
+  it('Should overwrite watch config using cli flags to false', async () => {
+    mockConfig(`
+        schema: schema.graphql
+        watch: true
+        generates:
+            file.ts:
+                - plugin
+    `);
+    const args = createArgv('--watch=false');
+    const context = await createContext(parseArgv(args));
+    const config = context.getConfig();
+    expect(config.watch).toBeFalsy();
+  });
+
   it('Should set --overwrite with new YML api', async () => {
     mockConfig(`
         schema: schema.graphql