It seems like the version number/hash it added to the bundle name, causing every build to be treated as a different app. For example, this is how the bundle report looks like for any one of my PRs, regardless of the changes:
| Bundle name |
Previous size |
New size |
Change |
| todo-boards-__sveltekit_1uzgg2h.app-client-esm |
0B |
3.26MB |
+3.26MB |
| todo-boards-__sveltekit_1uzgg2h.app-server-esm |
0B |
2.85MB |
+2.85MB |
| todo-boards-__sveltekit_rjtutb.app-client-esm |
3.25MB |
3.25MB |
0B |
| todo-boards-__sveltekit_rjtutb.app-server-esm |
2.85MB |
2.85MB |
0B |
| todo-boards-__sveltekit_md9ml7.app-client-esm |
3.25MB |
3.25MB |
0B |
| todo-boards-__sveltekit_md9ml7.app-server-esm |
2.85MB |
2.85MB |
0B |
| todo-boards-__sveltekit_rw61bm.app-client-esm |
3.25MB |
3.25MB |
0B |
| todo-boards-__sveltekit_rw61bm.app-server-esm |
2.85MB |
2.85MB |
0B |
| todo-boards-__sveltekit_oc9q2g.app-client-esm |
3.25MB |
3.25MB |
0B |
| todo-boards-__sveltekit_oc9q2g.app-server-esm |
2.85MB |
2.85MB |
0B |
| todo-boards-__sveltekit_pd0dha.app-client-esm |
3.25MB |
3.25MB |
0B |
| todo-boards-__sveltekit_pd0dha.app-server-esm |
2.85MB |
2.85MB |
0B |
| todo-boards-__sveltekit_9048ew.app-client-esm |
3.26MB |
3.26MB |
0B |
| todo-boards-__sveltekit_9048ew.app-server-esm |
2.85MB |
2.85MB |
0B |
| todo-boards-__sveltekit_jb7hj3.app-client-esm |
3.26MB |
3.26MB |
0B |
| todo-boards-__sveltekit_jb7hj3.app-server-esm |
2.85MB |
2.85MB |
0B |
| todo-boards-__sveltekit_15434l3.app-client-esm |
3.26MB |
3.26MB |
0B |
| todo-boards-__sveltekit_15434l3.app-server-esm |
2.85MB |
2.85MB |
0B |
| todo-boards-__sveltekit_wbgdw4.app-client-esm |
3.26MB |
3.26MB |
0B |
| todo-boards-__sveltekit_wbgdw4.app-server-esm |
2.85MB |
2.85MB |
0B |
| todo-boards-__sveltekit_1ul4wew.app-client-esm |
3.26MB |
3.26MB |
0B |
| todo-boards-__sveltekit_3mgeqa.app-client-esm |
3.26MB |
3.26MB |
0B |
| todo-boards-__sveltekit_3mgeqa.app-server-esm |
2.85MB |
2.85MB |
0B |
| todo-boards-__sveltekit_10ypcbc.app-client-esm |
3.26MB |
3.26MB |
0B |
| todo-boards-__sveltekit_10ypcbc.app-server-esm |
2.85MB |
2.85MB |
0B |
| todo-boards-__sveltekit_1xcvy2i.app-client-esm |
3.26MB |
3.26MB |
0B |
| todo-boards-__sveltekit_1xcvy2i.app-server-esm |
2.85MB |
2.85MB |
0B |
| todo-boards-__sveltekit_v9cwmu.app-client-esm |
3.26MB |
3.26MB |
0B |
| todo-boards-__sveltekit_v9cwmu.app-server-esm |
2.85MB |
2.85MB |
0B |
| todo-boards-__sveltekit_znjpv5.app-client-esm |
3.26MB |
3.26MB |
0B |
| todo-boards-__sveltekit_znjpv5.app-server-esm |
2.85MB |
2.85MB |
0B |
This then gets incorrectly reported as a large change, even though it isn't:

It seems like this is the code at fault:
|
const name = getBundleName( |
|
output.originalBundleName, |
|
options.dir, |
|
options.format, |
|
options.name, |
|
); |
here, options.name is __sveltekit_1uzgg2h.app, changing on every build.
Workaround
Patch (can be applied for example using yarn patch):
diff --git a/dist/index.mjs b/dist/index.mjs
index af4d577bb316858597a9f420574129e0e799684f..6dfaaedd4fddf5a4edd5e2fbc49bb1485913943f 100644
--- a/dist/index.mjs
+++ b/dist/index.mjs
@@ -31,7 +31,6 @@ const sveltekitBundleAnalysisPlugin = ({
output.originalBundleName,
options.dir,
options.format,
- options.name
);
output.unlockBundleName();
output.setBundleName(name);
It seems like the version number/hash it added to the bundle name, causing every build to be treated as a different app. For example, this is how the bundle report looks like for any one of my PRs, regardless of the changes:
This then gets incorrectly reported as a large change, even though it isn't:
It seems like this is the code at fault:
codecov-javascript-bundler-plugins/packages/sveltekit-plugin/src/sveltekit-bundle-analysis/sveltekitBundleAnalysisPlugin.ts
Lines 24 to 29 in af1b7a9
here,
options.nameis__sveltekit_1uzgg2h.app, changing on every build.Workaround
Patch (can be applied for example using
yarn patch):