fix(ngcc): support ignoring deep-imports via package config (#36423)

Recently we added support for ignoring specified deep-import
warnings by providing sets of regular expressions within the
`ngcc.config.js` file. But this was only working for the project
level configuration.

This commit fixes ngcc so that it will also read these regular
expressions from package level configuration too.

Fixes #35750

PR Close #36423

Author: petebacondarwin

packages/compiler-cli/ngcc/src/packages/configuration.ts

@@ -241,9 +241,11 @@ export class NgccConfiguration {
     const configFilePath = join(packagePath, NGCC_CONFIG_FILENAME);
     if (this.fs.exists(configFilePath)) {
       try {
+        const packageConfig = this.evalSrcFile(configFilePath);
         return {
+          ...packageConfig,
           versionRange: version || '*',
-          entryPoints: this.processEntryPoints(packagePath, this.evalSrcFile(configFilePath)),
+          entryPoints: this.processEntryPoints(packagePath, packageConfig),
         };
       } catch (e) {
         throw new Error(`Invalid package configuration file at "${configFilePath}": ` + e.message);

packages/compiler-cli/ngcc/test/packages/configuration_spec.ts

@@ -102,6 +102,20 @@ runInEachFileSystem(() => {
                  .toHaveBeenCalledWith(_Abs('/project-1/node_modules/package-1/ngcc.config.js'));
            });
 
+        it('should read extra package config from package level file', () => {
+          loadTestFiles(packageWithConfigFiles(
+              'package-1', 'entry-point-1', '1.0.0', 'ignorableDeepImportMatchers: [ /xxx/ ]'));
+          const configuration = new NgccConfiguration(fs, _Abs('/project-1'));
+          const config =
+              configuration.getConfig(_Abs('/project-1/node_modules/package-1'), '1.0.0');
+
+          expect(config).toEqual({
+            versionRange: '1.0.0',
+            entryPoints: {[_Abs('/project-1/node_modules/package-1/entry-point-1')]: {}},
+            ignorableDeepImportMatchers: [/xxx/],
+          });
+        });
+
         it('should used cached configuration for a package if available', () => {
           loadTestFiles(packageWithConfigFiles('package-1', 'entry-point-1', '1.0.0'));
           const configuration = new NgccConfiguration(fs, _Abs('/project-1'));
@@ -169,6 +183,31 @@ runInEachFileSystem(() => {
           });
         });
 
+        it('should return configuration for a package found in a project level file', () => {
+          loadTestFiles([{
+            name: _Abs('/project-1/ngcc.config.js'),
+            contents: `
+              module.exports = {
+                packages: {
+                  'package-1': {
+                    entryPoints: {
+                      './entry-point-1': {}
+                    },
+                    ignorableDeepImportMatchers: [ /xxx/ ],
+                  },
+                },
+              };`
+          }]);
+          const configuration = new NgccConfiguration(fs, _Abs('/project-1'));
+          const config =
+              configuration.getConfig(_Abs('/project-1/node_modules/package-1'), '1.0.0');
+          expect(config).toEqual({
+            versionRange: '*',
+            entryPoints: {[_Abs('/project-1/node_modules/package-1/entry-point-1')]: {}},
+            ignorableDeepImportMatchers: [/xxx/],
+          });
+        });
+
         it('should return configuration for the correct version of a package found in a project level file',
            () => {
              loadTestFiles([{
@@ -569,11 +608,16 @@ runInEachFileSystem(() => {
     });
   });
 
-  function packageWithConfigFiles(packageName: string, entryPointName: string, version: string) {
+  function packageWithConfigFiles(
+      packageName: string, entryPointName: string, version: string, extraConfig: string = '') {
     return [
       {
         name: _Abs(`/project-1/node_modules/${packageName}/ngcc.config.js`),
-        contents: `module.exports = {entryPoints: { './${entryPointName}': {}}}`
+        contents: `
+        module.exports = {
+          entryPoints: { './${entryPointName}': {} },
+          ${extraConfig}
+        };`
       },
       {
         name: _Abs(`/project-1/node_modules/${packageName}/package.json`),