refactor(ngcc): add `packageName` property to `EntryPoint` interface (#37040)

This commit adds a `packageName` property to the `EntryPoint` interface.
In a subsequent commit this will be used to retrieve the correct ngcc
configuration for each package, regardless of its path.

PR Close #37040

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

@@ -28,6 +28,11 @@ export interface EntryPoint extends JsonObject {
   name: string;
   /** The path to this entry point. */
   path: AbsoluteFsPath;
+  /**
+   * The name of the package that contains this entry-point (e.g. `@angular/core` or
+   * `@angular/common`).
+   */
+  packageName: string;
   /** The path to the package that contains this entry-point. */
   packagePath: AbsoluteFsPath;
   /** The parsed package.json file for this entry-point. */
@@ -131,7 +136,8 @@ export function getEntryPointInfo(
   const loadedEntryPointPackageJson = (packagePackageJsonPath === entryPointPackageJsonPath) ?
       loadedPackagePackageJson :
       loadPackageJson(fs, entryPointPackageJsonPath);
-  const packageVersion = getPackageVersion(loadedPackagePackageJson);
+  const {packageName, packageVersion} = getPackageNameAndVersion(
+      fs, packagePath, loadedPackagePackageJson, loadedEntryPointPackageJson);
   const entryPointConfig =
       config.getPackageConfig(packagePath, packageVersion).entryPoints[entryPointPath];
   let entryPointPackageJson: EntryPointPackageJson;
@@ -173,6 +179,7 @@ export function getEntryPointInfo(
   const entryPointInfo: EntryPoint = {
     name: entryPointPackageJson.name,
     path: entryPointPath,
+    packageName,
     packagePath,
     packageJson: entryPointPackageJson,
     typings: resolve(entryPointPath, typings),
@@ -304,15 +311,44 @@ function guessTypingsFromPackageJson(
 }
 
 /**
- * Find the version of the package at `packageJsonPath`.
+ * Find or infer the name and version of a package.
  *
- * The version is read off of the `version` property of the package's `package.json` file (if
+ * - The name is computed based on the `name` property of the package's or the entry-point's
- * available).
+ *   `package.json` file (if available) or inferred from the package's path.
+ * - The version is read off of the `version` property of the package's `package.json` file (if
+ *   available).
  *
- * @param packageJson the parsed `package.json` of the package (if available).
+ * @param fs The `FileSystem` instance to use for parsing `packagePath` (if needed).
- * @returns the version string or `null` if the `pckage.json` file is missing or doesn't contain a
+ * @param packagePath the absolute path to the package.
- *     version.
+ * @param packagePackageJson the parsed `package.json` of the package (if available).
+ * @param entryPointPackageJson the parsed `package.json` of an entry-point (if available).
+ * @returns the computed name and version of the package.
  */
-function getPackageVersion(packageJson: EntryPointPackageJson|null): string|null {
+function getPackageNameAndVersion(
-  return packageJson?.version ?? null;
+    fs: FileSystem, packagePath: AbsoluteFsPath, packagePackageJson: EntryPointPackageJson|null,
+    entryPointPackageJson: EntryPointPackageJson|
+    null): {packageName: string, packageVersion: string|null} {
+  let packageName: string;
+
+  if (packagePackageJson !== null) {
+    // We have a valid `package.json` for the package: Get the package name from that.
+    packageName = packagePackageJson.name;
+  } else if (entryPointPackageJson !== null) {
+    // We have a valid `package.json` for the entry-point: Get the package name from that.
+    // This might be a secondary entry-point, so make sure we only keep the main package's name
+    // (e.g. only keep `@angular/common` from `@angular/common/http`).
+    packageName = /^(?:@[^/]+\/)?[^/]*/.exec(entryPointPackageJson.name)![0];
+  } else {
+    // We don't have a valid `package.json`: Infer the package name from the package's path.
+    const lastSegment = fs.basename(packagePath);
+    const secondLastSegment = fs.basename(fs.dirname(packagePath));
+
+    packageName =
+        secondLastSegment.startsWith('@') ? `${secondLastSegment}/${lastSegment}` : lastSegment;
+  }
+
+  return {
+    packageName,
+    packageVersion: packagePackageJson?.version ?? null,
+  };
 }

packages/compiler-cli/ngcc/test/dependencies/dependency_resolver_spec.ts

@@ -60,6 +60,7 @@ runInEachFileSystem(() => {
         first = {
           name: 'first',
           path: _('/first'),
+          packageName: 'first',
           packagePath: _('/first'),
           packageJson: {esm5: './index.js'},
           typings: _('/first/index.d.ts'),
@@ -67,7 +68,9 @@ runInEachFileSystem(() => {
           ignoreMissingDependencies: false,
         } as EntryPoint;
         second = {
+          name: 'second',
           path: _('/second'),
+          packageName: 'second',
           packagePath: _('/second'),
           packageJson: {esm2015: './sub/index.js'},
           typings: _('/second/sub/index.d.ts'),
@@ -75,7 +78,9 @@ runInEachFileSystem(() => {
           ignoreMissingDependencies: false,
         } as EntryPoint;
         third = {
+          name: 'third',
           path: _('/third'),
+          packageName: 'third',
           packagePath: _('/third'),
           packageJson: {fesm5: './index.js'},
           typings: _('/third/index.d.ts'),
@@ -83,7 +88,9 @@ runInEachFileSystem(() => {
           ignoreMissingDependencies: false,
         } as EntryPoint;
         fourth = {
+          name: 'fourth',
           path: _('/fourth'),
+          packageName: 'fourth',
           packagePath: _('/fourth'),
           packageJson: {fesm2015: './sub2/index.js'},
           typings: _('/fourth/sub2/index.d.ts'),
@@ -91,7 +98,9 @@ runInEachFileSystem(() => {
           ignoreMissingDependencies: false,
         } as EntryPoint;
         fifth = {
+          name: 'fifth',
           path: _('/fifth'),
+          packageName: 'fifth',
           packagePath: _('/fifth'),
           packageJson: {module: './index.js'},
           typings: _('/fifth/index.d.ts'),
@@ -100,7 +109,9 @@ runInEachFileSystem(() => {
         } as EntryPoint;
 
         sixthIgnoreMissing = {
+          name: 'sixth',
           path: _('/sixth'),
+          packageName: 'sixth',
           packagePath: _('/sixth'),
           packageJson: {module: './index.js'},
           typings: _('/sixth/index.d.ts'),
@@ -291,6 +302,7 @@ runInEachFileSystem(() => {
         const testEntryPoint = {
           name: 'test-package',
           path: _('/project/node_modules/test-package'),
+          packageName: 'test-package',
           packagePath: _('/project/node_modules/test-package'),
           packageJson: {esm5: './index.js'},
           typings: _('/project/node_modules/test-package/index.d.ts'),

packages/compiler-cli/ngcc/test/helpers/utils.ts

@@ -22,6 +22,7 @@ export function makeTestEntryPoint(
   return {
     name: entryPointName,
     path: absoluteFrom(`/node_modules/${entryPointName}`),
+    packageName,
     packagePath: absoluteFrom(`/node_modules/${packageName}`),
     packageJson: {name: entryPointName},
     typings: absoluteFrom(`/node_modules/${entryPointName}/index.d.ts`),

packages/compiler-cli/ngcc/test/integration/ngcc_spec.ts

@@ -1572,7 +1572,7 @@ runInEachFileSystem(() => {
           },
           {
             name: _('/node_modules/deep_import/package.json'),
-            contents: '{"name": "deep-import", "es2015": "./index.js", "typings": "./index.d.ts"}',
+            contents: '{"name": "deep_import", "es2015": "./index.js", "typings": "./index.d.ts"}',
           },
           {
             name: _('/node_modules/deep_import/entry_point.js'),

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

@@ -168,6 +168,7 @@ runInEachFileSystem(() => {
          const entryPoint: EntryPoint = {
            name: 'test',
            path: absoluteFrom('/node_modules/test'),
+           packageName: 'test',
            packagePath: absoluteFrom('/node_modules/test'),
            packageJson: {name: 'test'},
            typings: absoluteFrom('/node_modules/test/index.d.ts'),
@@ -218,6 +219,7 @@ runInEachFileSystem(() => {
             const entryPoint: EntryPoint = {
               name: 'test',
               path: absoluteFrom('/node_modules/test'),
+              packageName: 'test',
               packagePath: absoluteFrom('/node_modules/test'),
               packageJson: {name: 'test'},
               typings: absoluteFrom('/node_modules/test/index.d.ts'),
@@ -240,6 +242,7 @@ runInEachFileSystem(() => {
             const entryPoint: EntryPoint = {
               name: 'internal',
               path: absoluteFrom('/node_modules/internal'),
+              packageName: 'internal',
               packagePath: absoluteFrom('/node_modules/internal'),
               packageJson: {name: 'internal'},
               typings: absoluteFrom('/node_modules/internal/index.d.ts'),
@@ -262,6 +265,7 @@ runInEachFileSystem(() => {
             const entryPoint: EntryPoint = {
               name: 'test',
               path: absoluteFrom('/node_modules/test'),
+              packageName: 'test',
               packagePath: absoluteFrom('/node_modules/test'),
               packageJson: {name: 'test'},
               typings: absoluteFrom('/node_modules/test/index.d.ts'),
@@ -285,6 +289,7 @@ runInEachFileSystem(() => {
       const entryPoint: EntryPoint = {
         name: 'secondary',
         path: absoluteFrom('/node_modules/primary/secondary'),
+        packageName: 'primary',
         packagePath: absoluteFrom('/node_modules/primary'),
         packageJson: {name: 'secondary'},
         typings: absoluteFrom('/node_modules/primary/secondary/index.d.ts'),

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

@@ -149,6 +149,7 @@ runInEachFileSystem(() => {
           entryPoint: {
             name: 'some_package/valid_entry_point',
             path: _Abs('/project/node_modules/some_package/valid_entry_point'),
+            packageName: 'some_package',
             packagePath: _Abs('/project/node_modules/some_package'),
             packageJson: jasmine.any(Object),
             typings:

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

@@ -6,7 +6,7 @@
  * found in the LICENSE file at https://angular.io/license
  */
 
-import {absoluteFrom, AbsoluteFsPath, FileSystem, getFileSystem, join} from '../../../src/ngtsc/file_system';
+import {absoluteFrom, AbsoluteFsPath, FileSystem, getFileSystem, join, relative} from '../../../src/ngtsc/file_system';
 import {runInEachFileSystem} from '../../../src/ngtsc/file_system/testing';
 import {loadTestFiles} from '../../../test/helpers';
 import {NgccConfiguration} from '../../src/packages/configuration';
@@ -45,6 +45,7 @@ runInEachFileSystem(() => {
          expect(entryPoint).toEqual({
            name: 'some_package/valid_entry_point',
            path: _('/project/node_modules/some_package/valid_entry_point'),
+           packageName: 'some_package',
            packagePath: SOME_PACKAGE,
            packageJson: loadPackageJson(fs, '/project/node_modules/some_package/valid_entry_point'),
            typings:
@@ -194,6 +195,7 @@ runInEachFileSystem(() => {
       expect(entryPoint).toEqual({
         name: 'some_package/valid_entry_point',
         path: _('/project/node_modules/some_package/valid_entry_point'),
+        packageName: 'some_package',
         packagePath: SOME_PACKAGE,
         packageJson: overriddenPackageJson,
         typings: _('/project/node_modules/some_package/valid_entry_point/some_other.d.ts'),
@@ -242,6 +244,7 @@ runInEachFileSystem(() => {
          expect(entryPoint).toEqual({
            name: 'some_package/missing_package_json',
            path: _('/project/node_modules/some_package/missing_package_json'),
+           packageName: 'some_package',
            packagePath: SOME_PACKAGE,
            packageJson: {name: 'some_package/missing_package_json', ...override},
            typings: _(
@@ -252,6 +255,154 @@ runInEachFileSystem(() => {
          });
        });
 
+    [false, true].forEach(isScoped => {
+      const nameWithScope = (baseName: string) => `${isScoped ? '@some-scope/' : ''}${baseName}`;
+      const getPackageName = (packagePath: AbsoluteFsPath, entryPointPath: AbsoluteFsPath) => {
+        const config = new NgccConfiguration(fs, _('/project'));
+        const logger = new MockLogger();
+        const entryPoint = getEntryPointInfo(fs, config, logger, packagePath, entryPointPath);
+
+        if (!isEntryPoint(entryPoint)) {
+          return fail(`Expected an entry point but got ${entryPoint}`);
+        }
+
+        return entryPoint.packageName;
+      };
+      const setUpPackageWithEntryPointPackageJson =
+          (entryPointName: string, entryPointPath: AbsoluteFsPath) => {
+            // Ensure a `package.json` exists for the entry-point (containing `entryPointName`).
+            loadTestFiles([
+              {
+                name: join(entryPointPath, 'package.json'),
+                contents: JSON.stringify({name: entryPointName, typings: './index.d.ts'}),
+              },
+            ]);
+          };
+      const setUpPackageWithoutEntryPointPackageJson =
+          (packagePath: AbsoluteFsPath, entryPointPath: AbsoluteFsPath) => {
+            // Ensure there is an ngcc config for the entry-point providing a `typings` field  to
+            // avoid returning `INCOMPATIBLE_ENTRY_POINT` (since there is no `package.json`).
+            loadTestFiles([
+              {
+                name: join(packagePath, 'ngcc.config.js'),
+                contents: `
+                  module.exports = {
+                    entryPoints: {
+                      '${relative(packagePath, entryPointPath)}': {
+                        override: {typings: './index.d.ts'},
+                      },
+                    },
+                  };
+                `,
+              },
+            ]);
+          };
+
+      describe(`should compute the containing ${isScoped ? 'scoped ' : ''}package's name`, () => {
+        it('for a primary entry-point with a `package.json`', () => {
+          const packagePath = _(`/project/node_modules/${nameWithScope('on-disk-package-name')}`);
+          const entryPointPath = packagePath;
+          const expectedPackageName = nameWithScope('package-json-package-name');
+
+          setUpPackageWithEntryPointPackageJson(expectedPackageName, entryPointPath);
+
+          expect(getPackageName(packagePath, entryPointPath)).toBe(expectedPackageName);
+        });
+
+        it('for a primary entry-point without a `package.json`', () => {
+          const packagePath = _(`/project/node_modules/${nameWithScope('on-disk-package-name')}`);
+          const entryPointPath = packagePath;
+          const expectedPackageName = nameWithScope('on-disk-package-name');
+
+          setUpPackageWithoutEntryPointPackageJson(packagePath, entryPointPath);
+
+          expect(getPackageName(packagePath, entryPointPath)).toBe(expectedPackageName);
+        });
+
+        it('for a secondary entry-point with a `package.json`', () => {
+          const packagePath = _(`/project/node_modules/${nameWithScope('on-disk-package-name')}`);
+          const entryPointPath = join(packagePath, 'some-entry-point');
+          const expectedPackageName = nameWithScope('package-json-package-name');
+
+          setUpPackageWithEntryPointPackageJson(
+              `${expectedPackageName}/some-entry-point`, entryPointPath);
+
+          expect(getPackageName(packagePath, entryPointPath)).toBe(expectedPackageName);
+        });
+
+        it('for a secondary entry-point without a `package.json`', () => {
+          const packagePath = _(`/project/node_modules/${nameWithScope('on-disk-package-name')}`);
+          const entryPointPath = join(packagePath, 'some-entry-point');
+          const expectedPackageName = nameWithScope('on-disk-package-name');
+
+          setUpPackageWithoutEntryPointPackageJson(packagePath, entryPointPath);
+
+          expect(getPackageName(packagePath, entryPointPath)).toBe(expectedPackageName);
+        });
+
+        it('for a primary entry-point without a `package.json` in nested `node_modules/`', () => {
+          const packagePath = _(`/project/node_modules/other-package/node_modules/${
+              nameWithScope('on-disk-package-name')}`);
+          const entryPointPath = packagePath;
+          const expectedPackageName = nameWithScope('on-disk-package-name');
+
+          setUpPackageWithoutEntryPointPackageJson(packagePath, entryPointPath);
+
+          expect(getPackageName(packagePath, entryPointPath)).toBe(expectedPackageName);
+        });
+
+        it('for a secondary entry-point without a `package.json` in nested `node_modules/`', () => {
+          const packagePath = _(`/project/node_modules/other-package/node_modules/${
+              nameWithScope('on-disk-package-name')}`);
+          const entryPointPath = join(packagePath, 'some-entry-point');
+          const expectedPackageName = nameWithScope('on-disk-package-name');
+
+          setUpPackageWithoutEntryPointPackageJson(packagePath, entryPointPath);
+
+          expect(getPackageName(packagePath, entryPointPath)).toBe(expectedPackageName);
+        });
+
+        it('for a primary entry-point with a `package.json` outside `node_modules/`', () => {
+          const packagePath = _(`/project/libs/${nameWithScope('on-disk-package-name')}`);
+          const entryPointPath = packagePath;
+          const expectedPackageName = nameWithScope('package-json-package-name');
+
+          setUpPackageWithEntryPointPackageJson(expectedPackageName, entryPointPath);
+
+          expect(getPackageName(packagePath, entryPointPath)).toBe(expectedPackageName);
+        });
+
+        it('for a primary entry-point without a `package.json` outside `node_modules/`', () => {
+          const packagePath = _(`/project/libs/${nameWithScope('on-disk-package-name')}`);
+          const entryPointPath = packagePath;
+          const expectedPackageName = nameWithScope('on-disk-package-name');
+
+          setUpPackageWithoutEntryPointPackageJson(packagePath, entryPointPath);
+
+          expect(getPackageName(packagePath, entryPointPath)).toBe(expectedPackageName);
+        });
+
+        it('for a secondary entry-point with a `package.json` outside `node_modules/`', () => {
+          const packagePath = _(`/project/libs/${nameWithScope('on-disk-package-name')}`);
+          const entryPointPath = join(packagePath, 'some-entry-point');
+          const expectedPackageName = nameWithScope('package-json-package-name');
+
+          setUpPackageWithEntryPointPackageJson(expectedPackageName, entryPointPath);
+
+          expect(getPackageName(packagePath, entryPointPath)).toBe(expectedPackageName);
+        });
+
+        it('for a secondary entry-point without a `package.json` outside `node_modules/`', () => {
+          const packagePath = _(`/project/libs/${nameWithScope('on-disk-package-name')}`);
+          const entryPointPath = join(packagePath, 'some-entry-point');
+          const expectedPackageName = nameWithScope('on-disk-package-name');
+
+          setUpPackageWithoutEntryPointPackageJson(packagePath, entryPointPath);
+
+          expect(getPackageName(packagePath, entryPointPath)).toBe(expectedPackageName);
+        });
+      });
+    });
 
     it('should return `INCOMPATIBLE_ENTRY_POINT` if there is no typings or types field in the package.json',
        () => {
@@ -323,6 +474,7 @@ runInEachFileSystem(() => {
            expect(entryPoint).toEqual({
              name: 'some_package/missing_typings',
              path: _('/project/node_modules/some_package/missing_typings'),
+             packageName: 'some_package',
              packagePath: SOME_PACKAGE,
              packageJson: loadPackageJson(fs, '/project/node_modules/some_package/missing_typings'),
              typings: _(`/project/node_modules/some_package/missing_typings/${typingsPath}.d.ts`),
@@ -348,6 +500,7 @@ runInEachFileSystem(() => {
          expect(entryPoint).toEqual({
            name: 'some_package/missing_metadata',
            path: _('/project/node_modules/some_package/missing_metadata'),
+           packageName: 'some_package',
            packagePath: SOME_PACKAGE,
            packageJson: loadPackageJson(fs, '/project/node_modules/some_package/missing_metadata'),
            typings: _(`/project/node_modules/some_package/missing_metadata/missing_metadata.d.ts`),
@@ -377,6 +530,7 @@ runInEachFileSystem(() => {
          expect(entryPoint).toEqual({
            name: 'some_package/missing_metadata',
            path: _('/project/node_modules/some_package/missing_metadata'),
+           packageName: 'some_package',
            packagePath: SOME_PACKAGE,
            packageJson: loadPackageJson(fs, '/project/node_modules/some_package/missing_metadata'),
            typings: _('/project/node_modules/some_package/missing_metadata/missing_metadata.d.ts'),
@@ -405,6 +559,7 @@ runInEachFileSystem(() => {
       expect(entryPoint).toEqual({
         name: 'some_package/types_rather_than_typings',
         path: _('/project/node_modules/some_package/types_rather_than_typings'),
+        packageName: 'some_package',
         packagePath: SOME_PACKAGE,
         packageJson:
             loadPackageJson(fs, '/project/node_modules/some_package/types_rather_than_typings'),
@@ -440,6 +595,7 @@ runInEachFileSystem(() => {
       expect(entryPoint).toEqual({
         name: 'some_package/material_style',
         path: _('/project/node_modules/some_package/material_style'),
+        packageName: 'some_package',
         packagePath: SOME_PACKAGE,
         packageJson: loadPackageJson(fs, '/project/node_modules/some_package/material_style'),
         typings: _(`/project/node_modules/some_package/material_style/material_style.d.ts`),