fix(config)!: globalExtends merge order (#28145)

Previously, config from globalExtends was incorrectly merged _after_ other global config. This meant for example that packageRules in a config.js could not override packageRules from within globalExtends, because they were applied after. Now, globalExtends content will be merged first, and remaining global config merged second.

Fixes #28131

BREAKING CHANGE: order of globalExtends resolution is changed so that it is applied first and remaining global config takes precedence.

docs/usage/self-hosted-experimental.md

@@ -60,10 +60,6 @@ If set to any value, Renovate will use the Docker Hub API (`https://hub.docker.c
 If set to an integer, Renovate will use this as max page number for docker tags lookup on docker registries, instead of the default 20 pages.
 This is useful for registries which ignores the `n` parameter in the query string and only return 50 tags per page.
 
-## `RENOVATE_X_EAGER_GLOBAL_EXTENDS`
-
-Resolve and merge `globalExtends` presets before other global config, instead of after.
-
 ## `RENOVATE_X_EXEC_GPID_HANDLE`
 
 If set, Renovate will terminate the whole process group of a terminated child process spawned by Renovate.

lib/workers/global/index.spec.ts

@@ -45,7 +45,6 @@ describe('workers/global/index', () => {
  initPlatform.mockImplementation((input) => Promise.resolve(input));
  delete process.env.AWS_SECRET_ACCESS_KEY;
  delete process.env.AWS_SESSION_TOKEN;
- delete process.env.RENOVATE_X_EAGER_GLOBAL_EXTENDS;
  });
 
  describe('getRepositoryConfig', () => {
@@ -88,21 +87,6 @@ describe('workers/global/index', () => {
  expect(addSecretForSanitizing).toHaveBeenCalledTimes(2);
  });
 
- it('resolves global presets first', async () => {
- process.env.RENOVATE_X_EAGER_GLOBAL_EXTENDS = 'true';
- parseConfigs.mockResolvedValueOnce({
- repositories: [],
- globalExtends: [':pinVersions'],
- hostRules: [{ matchHost: 'github.com', token: 'abc123' }],
- });
- presets.resolveConfigPresets.mockResolvedValueOnce({});
- await expect(globalWorker.start()).resolves.toBe(0);
- expect(presets.resolveConfigPresets).toHaveBeenCalledWith({
- extends: [':pinVersions'],
- });
- expect(parseConfigs).toHaveBeenCalledTimes(1);
- });
-
  it('resolves global presets immediately', async () => {
  parseConfigs.mockResolvedValueOnce({
  repositories: [],

lib/workers/global/index.ts

@@ -144,17 +144,10 @@ export async function start(): Promise<number> {
  config = await getGlobalConfig();
  if (config?.globalExtends) {
  // resolve global presets immediately
- if (process.env.RENOVATE_X_EAGER_GLOBAL_EXTENDS) {
- config = mergeChildConfig(
- await resolveGlobalExtends(config.globalExtends),
- config,
- );
- } else {
- config = mergeChildConfig(
- config,
- await resolveGlobalExtends(config.globalExtends),
- );
- }
+ config = mergeChildConfig(
+ await resolveGlobalExtends(config.globalExtends),
+ config,
+ );
  }
 
  // Set allowedHeaders in case hostRules headers are configured in file config