feat(ngcc): support version ranges in project/default configurations (#33008)

By appending a version range to the package name, it is now possible to
target configuration to specific versions of a package.

PR Close #33008

package.json

@@ -61,6 +61,7 @@
     "@types/minimist": "^1.2.0",
     "@types/node": "^10.9.4",
     "@types/selenium-webdriver": "3.0.7",
+    "@types/semver": "^6.0.2",
     "@types/shelljs": "^0.7.8",
     "@types/systemjs": "0.19.32",
     "@types/yargs": "^11.1.1",
@@ -159,7 +160,7 @@
     "mutation-observer": "^1.0.3",
     "rewire": "2.5.2",
     "sauce-connect": "https://saucelabs.com/downloads/sc-4.5.1-linux.tar.gz",
-    "semver": "5.4.1",
+    "semver": "^6.3.0",
     "tslint-eslint-rules": "4.1.1",
     "tslint-no-toplevel-property-access": "0.0.2",
     "tsutils": "2.27.2",

packages/compiler-cli/ngcc/BUILD.bazel

@@ -27,10 +27,12 @@ ts_library(
         "//packages/compiler-cli/src/ngtsc/util",
         "@npm//@types/convert-source-map",
         "@npm//@types/node",
+        "@npm//@types/semver",
         "@npm//@types/yargs",
         "@npm//canonical-path",
         "@npm//dependency-graph",
         "@npm//magic-string",
+        "@npm//semver",
         "@npm//source-map",
         "@npm//typescript",
     ],

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

@@ -5,6 +5,7 @@
  * Use of this source code is governed by an MIT-style license that can be
  * found in the LICENSE file at https://angular.io/license
  */
+import {satisfies} from 'semver';
 import * as vm from 'vm';
 import {AbsoluteFsPath, FileSystem, dirname, join, resolve} from '../../../src/ngtsc/file_system';
 import {PackageJsonFormatPropertiesMap} from './entry_point';
@@ -12,7 +13,7 @@ import {PackageJsonFormatPropertiesMap} from './entry_point';
 /**
  * The format of a project level configuration file.
  */
-export interface NgccProjectConfig { packages: {[packagePath: string]: NgccPackageConfig}; }
+export interface NgccProjectConfig<T = NgccPackageConfig> { packages: {[packagePath: string]: T}; }
 
 /**
  * The format of a package level configuration file.
@@ -80,47 +81,96 @@ export const DEFAULT_NGCC_CONFIG: NgccProjectConfig = {
   }
 };
 
+interface VersionedPackageConfig extends NgccPackageConfig {
+  versionRange: string;
+}
+
 const NGCC_CONFIG_FILENAME = 'ngcc.config.js';
 
+/**
+ * Ngcc has a hierarchical configuration system that lets us "fix up" packages that do not
+ * work with ngcc out of the box.
+ *
+ * There are three levels at which configuration can be declared:
+ *
+ * * Default level - ngcc comes with built-in configuration for well known cases.
+ * * Package level - a library author publishes a configuration with their package to fix known
+ *   issues.
+ * * Project level - the application developer provides a configuration that fixes issues specific
+ *   to the libraries used in their application.
+ *
+ * Ngcc will match configuration based on the package name but also on its version. This allows
+ * configuration to provide different fixes to different version ranges of a package.
+ *
+ * * Package level configuration is specific to the package version where the configuration is
+ *   found.
+ * * Default and project level configuration should provide version ranges to ensure that the
+ *   configuration is only applied to the appropriate versions of a package.
+ *
+ * When getting a configuration for a package (via `getConfig()`) the caller should provide the
+ * version of the package in question, if available. If it is not provided then the first available
+ * configuration for a package is returned.
+ */
 export class NgccConfiguration {
-  private defaultConfig: NgccProjectConfig;
-  private cache = new Map<string, NgccPackageConfig>();
+  private defaultConfig: NgccProjectConfig<VersionedPackageConfig[]>;
+  private projectConfig: NgccProjectConfig<VersionedPackageConfig[]>;
+  private cache = new Map<string, VersionedPackageConfig>();
 
   constructor(private fs: FileSystem, baseDir: AbsoluteFsPath) {
-    this.defaultConfig = this.processDefaultConfig(baseDir);
-    const projectConfig = this.loadProjectConfig(baseDir);
-    for (const packagePath in projectConfig.packages) {
-      const absPackagePath = resolve(baseDir, 'node_modules', packagePath);
-      const packageConfig = projectConfig.packages[packagePath];
-      packageConfig.entryPoints =
-          this.processEntryPoints(absPackagePath, packageConfig.entryPoints);
-      this.cache.set(absPackagePath, packageConfig);
-    }
+    this.defaultConfig = this.processProjectConfig(baseDir, DEFAULT_NGCC_CONFIG);
+    this.projectConfig = this.processProjectConfig(baseDir, this.loadProjectConfig(baseDir));
   }
 
-  getConfig(packagePath: AbsoluteFsPath): NgccPackageConfig {
-    if (this.cache.has(packagePath)) {
-      return this.cache.get(packagePath) !;
+  /**
+   * Get a configuration for the given `version` of a package at `packagePath`.
+   *
+   * @param packagePath The path to the package whose config we want.
+   * @param version The version of the package whose config we want, or `null` if the package's
+   * package.json did not exist or was invalid.
+   */
+  getConfig(packagePath: AbsoluteFsPath, version: string|null): VersionedPackageConfig {
+    const cacheKey = packagePath + (version !== null ? `@${version}` : '');
+    if (this.cache.has(cacheKey)) {
+      return this.cache.get(cacheKey) !;
     }
 
-    const packageConfig = this.loadPackageConfig(packagePath) ||
-        this.defaultConfig.packages[packagePath] || {entryPoints: {}};
-    this.cache.set(packagePath, packageConfig);
-    return packageConfig;
+    const projectLevelConfig =
+        findSatisfactoryVersion(this.projectConfig.packages[packagePath], version);
+    if (projectLevelConfig !== null) {
+      this.cache.set(cacheKey, projectLevelConfig);
+      return projectLevelConfig;
     }
 
-  private processDefaultConfig(baseDir: AbsoluteFsPath): NgccProjectConfig {
-    const defaultConfig: NgccProjectConfig = {packages: {}};
-    for (const packagePath in DEFAULT_NGCC_CONFIG.packages) {
-      const absPackagePath = resolve(baseDir, 'node_modules', packagePath);
-      const packageConfig = DEFAULT_NGCC_CONFIG.packages[packagePath];
+    const packageLevelConfig = this.loadPackageConfig(packagePath, version);
+    if (packageLevelConfig !== null) {
+      this.cache.set(cacheKey, packageLevelConfig);
+      return packageLevelConfig;
+    }
+
+    const defaultLevelConfig =
+        findSatisfactoryVersion(this.defaultConfig.packages[packagePath], version);
+    if (defaultLevelConfig !== null) {
+      this.cache.set(cacheKey, defaultLevelConfig);
+      return defaultLevelConfig;
+    }
+
+    return {versionRange: '*', entryPoints: {}};
+  }
+
+  private processProjectConfig(baseDir: AbsoluteFsPath, projectConfig: NgccProjectConfig):
+      NgccProjectConfig<VersionedPackageConfig[]> {
+    const processedConfig: NgccProjectConfig<VersionedPackageConfig[]> = {packages: {}};
+    for (const packagePathAndVersion in projectConfig.packages) {
+      const packageConfig = projectConfig.packages[packagePathAndVersion];
       if (packageConfig) {
-        packageConfig.entryPoints =
-            this.processEntryPoints(absPackagePath, packageConfig.entryPoints);
-        defaultConfig.packages[absPackagePath] = packageConfig;
+        const [packagePath, versionRange = '*'] = this.splitPathAndVersion(packagePathAndVersion);
+        const absPackagePath = resolve(baseDir, 'node_modules', packagePath);
+        const entryPoints = this.processEntryPoints(absPackagePath, packageConfig);
+        processedConfig.packages[absPackagePath] = processedConfig.packages[absPackagePath] || [];
+        processedConfig.packages[absPackagePath].push({versionRange, entryPoints});
       }
     }
-    return defaultConfig;
+    return processedConfig;
   }
 
   private loadProjectConfig(baseDir: AbsoluteFsPath): NgccProjectConfig {
@@ -136,13 +186,15 @@ export class NgccConfiguration {
     }
   }
 
-  private loadPackageConfig(packagePath: AbsoluteFsPath): NgccPackageConfig|null {
+  private loadPackageConfig(packagePath: AbsoluteFsPath, version: string|null):
+      VersionedPackageConfig|null {
     const configFilePath = join(packagePath, NGCC_CONFIG_FILENAME);
     if (this.fs.exists(configFilePath)) {
       try {
-        const packageConfig = this.evalSrcFile(configFilePath);
-        packageConfig.entryPoints = this.processEntryPoints(packagePath, packageConfig.entryPoints);
-        return packageConfig;
+        return {
+          versionRange: version || '*',
+          entryPoints: this.processEntryPoints(packagePath, this.evalSrcFile(configFilePath)),
+        };
       } catch (e) {
         throw new Error(`Invalid package configuration file at "${configFilePath}": ` + e.message);
       }
@@ -164,14 +216,41 @@ export class NgccConfiguration {
     return sandbox.module.exports;
   }
 
-  private processEntryPoints(
-      packagePath: AbsoluteFsPath, entryPoints: {[entryPointPath: string]: NgccEntryPointConfig;}):
+  private processEntryPoints(packagePath: AbsoluteFsPath, packageConfig: NgccPackageConfig):
       {[entryPointPath: string]: NgccEntryPointConfig;} {
     const processedEntryPoints: {[entryPointPath: string]: NgccEntryPointConfig;} = {};
-    for (const entryPointPath in entryPoints) {
+    for (const entryPointPath in packageConfig.entryPoints) {
       // Change the keys to be absolute paths
-      processedEntryPoints[resolve(packagePath, entryPointPath)] = entryPoints[entryPointPath];
+      processedEntryPoints[resolve(packagePath, entryPointPath)] =
+          packageConfig.entryPoints[entryPointPath];
     }
     return processedEntryPoints;
   }
+
+  private splitPathAndVersion(packagePathAndVersion: string): [string, string|undefined] {
+    const versionIndex = packagePathAndVersion.lastIndexOf('@');
+    // Note that > 0 is because we don't want to match @ at the start of the line
+    // which is what you would have with a namespaced package, e.g. `@angular/common`.
+    return versionIndex > 0 ?
+        [
+          packagePathAndVersion.substring(0, versionIndex),
+          packagePathAndVersion.substring(versionIndex + 1)
+        ] :
+        [packagePathAndVersion, undefined];
+  }
+}
+
+function findSatisfactoryVersion(
+    configs: VersionedPackageConfig[] | undefined, version: string | null): VersionedPackageConfig|
+    null {
+  if (configs === undefined) {
+    return null;
+  }
+  if (version === null) {
+    // The package has no version (!) - perhaps the entry-point was from a deep import, which made
+    // it impossible to find the package.json.
+    // So just return the first config that matches the package name.
+    return configs[0];
+  }
+  return configs.find(config => satisfies(version, config.versionRange)) || null;
 }

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

@@ -82,7 +82,9 @@ export function getEntryPointInfo(
     fs: FileSystem, config: NgccConfiguration, logger: Logger, packagePath: AbsoluteFsPath,
     entryPointPath: AbsoluteFsPath): EntryPoint|null {
   const packageJsonPath = resolve(entryPointPath, 'package.json');
-  const entryPointConfig = config.getConfig(packagePath).entryPoints[entryPointPath];
+  const packageVersion = getPackageVersion(fs, packageJsonPath);
+  const entryPointConfig =
+      config.getConfig(packagePath, packageVersion).entryPoints[entryPointPath];
   if (entryPointConfig === undefined && !fs.exists(packageJsonPath)) {
     return null;
   }
@@ -224,3 +226,20 @@ function guessTypingsFromPackageJson(
   }
   return null;
 }
+
+/**
+ * Find the version of the package at `packageJsonPath`.
+ *
+ * @returns the version string or `null` if the package.json does not exist or is invalid.
+ */
+function getPackageVersion(fs: FileSystem, packageJsonPath: AbsoluteFsPath): string|null {
+  try {
+    if (fs.exists(packageJsonPath)) {
+      const packageJson = JSON.parse(fs.readFile(packageJsonPath));
+      return packageJson['version'] || null;
+    }
+  } catch {
+    // Do nothing
+  }
+  return null;
+}

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

@@ -32,49 +32,47 @@ runInEachFileSystem(() => {
 
     describe('getConfig()', () => {
       describe('at the package level', () => {
-        it('should return configuration for a package found in a package level file', () => {
-          loadTestFiles([{
-            name: _Abs('/project-1/node_modules/package-1/ngcc.config.js'),
-            contents: `module.exports = {entryPoints: { './entry-point-1': {}}}`
-          }]);
+        it('should return configuration for a package found in a package level file, with a matching version',
+           () => {
+             loadTestFiles(packageWithConfigFiles('package-1', 'entry-point-1', '1.0.0'));
              const readFileSpy = spyOn(fs, 'readFile').and.callThrough();
              const configuration = new NgccConfiguration(fs, _Abs('/project-1'));
-          const config = configuration.getConfig(_Abs('/project-1/node_modules/package-1'));
+             const config =
+                 configuration.getConfig(_Abs('/project-1/node_modules/package-1'), '1.0.0');
 
-          expect(config).toEqual(
-              {entryPoints: {[_Abs('/project-1/node_modules/package-1/entry-point-1')]: {}}});
+             expect(config).toEqual({
+               versionRange: '1.0.0',
+               entryPoints: {[_Abs('/project-1/node_modules/package-1/entry-point-1')]: {}}
+             });
              expect(readFileSpy)
                  .toHaveBeenCalledWith(_Abs('/project-1/node_modules/package-1/ngcc.config.js'));
            });
 
         it('should used cached configuration for a package if available', () => {
-          loadTestFiles([{
-            name: _Abs('/project-1/node_modules/package-1/ngcc.config.js'),
-            contents: `
-          module.exports = {
-            entryPoints: {
-              './entry-point-1': {}
-            },
-          };`
-          }]);
+          loadTestFiles(packageWithConfigFiles('package-1', 'entry-point-1', '1.0.0'));
           const configuration = new NgccConfiguration(fs, _Abs('/project-1'));
 
           // Populate the cache
-          configuration.getConfig(_Abs('/project-1/node_modules/package-1'));
+          configuration.getConfig(_Abs('/project-1/node_modules/package-1'), '1.0.0');
 
           const readFileSpy = spyOn(fs, 'readFile').and.callThrough();
-          const config = configuration.getConfig(_Abs('/project-1/node_modules/package-1'));
+          const config =
+              configuration.getConfig(_Abs('/project-1/node_modules/package-1'), '1.0.0');
 
-          expect(config).toEqual(
-              {entryPoints: {[_Abs('/project-1/node_modules/package-1/entry-point-1')]: {}}});
+          expect(config).toEqual({
+            versionRange: '1.0.0',
+            entryPoints: {[_Abs('/project-1/node_modules/package-1/entry-point-1')]: {}}
+          });
           expect(readFileSpy).not.toHaveBeenCalled();
         });
 
         it('should return an empty configuration object if there is no matching configuration for the package',
            () => {
+             loadTestFiles(packageWithConfigFiles('package-2', 'entry-point-1', '1.0.0'));
              const configuration = new NgccConfiguration(fs, _Abs('/project-1'));
-             const config = configuration.getConfig(_Abs('/project-1/node_modules/package-1'));
-             expect(config).toEqual({entryPoints: {}});
+             const config =
+                 configuration.getConfig(_Abs('/project-1/node_modules/package-1'), '1.0.0');
+             expect(config).toEqual({versionRange: '*', entryPoints: {}});
            });
 
         it('should error if a package level config file is badly formatted', () => {
@@ -83,7 +81,7 @@ runInEachFileSystem(() => {
             contents: `bad js code`
           }]);
           const configuration = new NgccConfiguration(fs, _Abs('/project-1'));
-          expect(() => configuration.getConfig(_Abs('/project-1/node_modules/package-1')))
+          expect(() => configuration.getConfig(_Abs('/project-1/node_modules/package-1'), '1.0.0'))
               .toThrowError(
                   `Invalid package configuration file at "${_Abs('/project-1/node_modules/package-1/ngcc.config.js')}": Unexpected identifier`);
         });
@@ -108,14 +106,86 @@ runInEachFileSystem(() => {
           const configuration = new NgccConfiguration(fs, _Abs('/project-1'));
           expect(readFileSpy).toHaveBeenCalledWith(_Abs('/project-1/ngcc.config.js'));
 
-          const config = configuration.getConfig(_Abs('/project-1/node_modules/package-1'));
-          expect(config).toEqual(
-              {entryPoints: {[_Abs('/project-1/node_modules/package-1/entry-point-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')]: {}}
+          });
+        });
+
+        it('should return configuration for the correct version of a package found in a project level file',
+           () => {
+             loadTestFiles([{
+               name: _Abs('/project-1/ngcc.config.js'),
+               contents: `
+              module.exports = {
+                packages: {
+                  'package-1@1.0.0': {
+                    entryPoints: {
+                      './entry-point-1': {}
+                    },
+                  },
+                  'package-1@2.*': {
+                    entryPoints: {
+                      './entry-point-2': {}
+                    },
+                  },
+                  'package-1@^3.2.0': {
+                    entryPoints: {
+                      './entry-point-3': {}
+                    },
+                  },
+                },
+              };`
+             }]);
+             const configuration = new NgccConfiguration(fs, _Abs('/project-1'));
+
+             expect(configuration.getConfig(_Abs('/project-1/node_modules/package-1'), '1.0.0'))
+                 .toEqual({
+                   versionRange: '1.0.0',
+                   entryPoints: {[_Abs('/project-1/node_modules/package-1/entry-point-1')]: {}}
+                 });
+             expect(configuration.getConfig(_Abs('/project-1/node_modules/package-1'), '2.5.0'))
+                 .toEqual({
+                   versionRange: '2.*',
+                   entryPoints: {[_Abs('/project-1/node_modules/package-1/entry-point-2')]: {}}
+                 });
+             expect(configuration.getConfig(_Abs('/project-1/node_modules/package-1'), '3.2.5'))
+                 .toEqual({
+                   versionRange: '^3.2.0',
+                   entryPoints: {[_Abs('/project-1/node_modules/package-1/entry-point-3')]: {}}
+                 });
+             expect(configuration.getConfig(_Abs('/project-1/node_modules/package-1'), '4.0.0'))
+                 .toEqual({versionRange: '*', entryPoints: {}});
+           });
+
+        it('should not get confused by the @ in namespaced packages', () => {
+          loadTestFiles([{
+            name: _Abs('/project-1/ngcc.config.js'),
+            contents: `
+              module.exports = {
+                packages: {
+                  '@angular/common': {
+                    entryPoints: {
+                      '.': {}
+                    },
+                  },
+                },
+              };`
+          }]);
+          const configuration = new NgccConfiguration(fs, _Abs('/project-1'));
+
+          expect(configuration.getConfig(_Abs('/project-1/node_modules/@angular/common'), '1.0.0'))
+              .toEqual({
+                versionRange: '*',
+                entryPoints: {[_Abs('/project-1/node_modules/@angular/common')]: {}}
+              });
+
         });
 
         it('should override package level config with project level config per package', () => {
-          loadTestFiles([
-            {
+          loadTestFiles([{
             name: _Abs('/project-1/ngcc.config.js'),
             contents: `
               module.exports = {
@@ -127,32 +197,20 @@ runInEachFileSystem(() => {
                   },
                 },
               };`,
-            },
-            {
-              name: _Abs('/project-1/node_modules/package-1/ngcc.config.js'),
-              contents: `
-          module.exports = {
-            entryPoints: {
-              './package-setting-entry-point': {}
-            },
-          };`,
-            },
-            {
-              name: _Abs('/project-1/node_modules/package-2/ngcc.config.js'),
-              contents: `
-          module.exports = {
-            entryPoints: {
-              './package-setting-entry-point': {}
-            },
-          };`,
-            }
-          ]);
+          }]);
+          loadTestFiles(
+              packageWithConfigFiles('package-1', 'package-setting-entry-point', '1.0.0'));
+          loadTestFiles(
+              packageWithConfigFiles('package-2', 'package-setting-entry-point', '1.0.0'));
+
           const readFileSpy = spyOn(fs, 'readFile').and.callThrough();
           const configuration = new NgccConfiguration(fs, _Abs('/project-1'));
           expect(readFileSpy).toHaveBeenCalledWith(_Abs('/project-1/ngcc.config.js'));
 
-          const package1Config = configuration.getConfig(_Abs('/project-1/node_modules/package-1'));
+          const package1Config =
+              configuration.getConfig(_Abs('/project-1/node_modules/package-1'), '1.0.0');
           expect(package1Config).toEqual({
+            versionRange: '1.0.0',
             entryPoints:
                 {[_Abs('/project-1/node_modules/package-1/package-setting-entry-point')]: {}}
           });
@@ -162,8 +220,10 @@ runInEachFileSystem(() => {
           // Note that for `package-2` only the project level entry-point is left.
           // This is because overriding happens for packages as a whole and there is no attempt to
           // merge entry-points.
-          const package2Config = configuration.getConfig(_Abs('/project-1/node_modules/package-2'));
+          const package2Config =
+              configuration.getConfig(_Abs('/project-1/node_modules/package-2'), '1.0.0');
           expect(package2Config).toEqual({
+            versionRange: '*',
             entryPoints:
                 {[_Abs('/project-1/node_modules/package-2/project-setting-entry-point')]: {}}
           });
@@ -182,38 +242,36 @@ runInEachFileSystem(() => {
         afterEach(() => { DEFAULT_NGCC_CONFIG.packages['package-1'] = originalDefaultConfig; });
 
         it('should return configuration for a package found in the default config', () => {
-
           const readFileSpy = spyOn(fs, 'readFile').and.callThrough();
           const configuration = new NgccConfiguration(fs, _Abs('/project-1'));
           expect(readFileSpy).not.toHaveBeenCalled();
 
-          const config = configuration.getConfig(_Abs('/project-1/node_modules/package-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/default-level-entry-point')]: {}}
           });
         });
 
         it('should override default level config with package level config, if provided', () => {
-          loadTestFiles([{
-            name: _Abs('/project-1/node_modules/package-1/ngcc.config.js'),
-            contents: `
-            module.exports = {
-              entryPoints: {'./package-level-entry-point': {}},
-            };`,
-          }]);
+          loadTestFiles(packageWithConfigFiles('package-1', 'package-level-entry-point', '1.0.0'));
           const configuration = new NgccConfiguration(fs, _Abs('/project-1'));
-          const config = configuration.getConfig(_Abs('/project-1/node_modules/package-1'));
+          const config =
+              configuration.getConfig(_Abs('/project-1/node_modules/package-1'), '1.0.0');
           // Note that only the package-level-entry-point is left.
           // This is because overriding happens for packages as a whole and there is no attempt to
           // merge entry-points.
           expect(config).toEqual({
+            versionRange: '1.0.0',
             entryPoints:
                 {[_Abs('/project-1/node_modules/package-1/package-level-entry-point')]: {}}
           });
         });
 
         it('should override default level config with project level config, if provided', () => {
+          loadTestFiles(packageWithConfigFiles('package-1', 'package-level-entry-point', '1.0.0'));
           loadTestFiles([
             {
               name: _Abs('/project-1/node_modules/package-1/ngcc.config.js'),
@@ -238,11 +296,13 @@ runInEachFileSystem(() => {
           ]);
 
           const configuration = new NgccConfiguration(fs, _Abs('/project-1'));
-          const config = configuration.getConfig(_Abs('/project-1/node_modules/package-1'));
+          const config =
+              configuration.getConfig(_Abs('/project-1/node_modules/package-1'), '1.0.0');
           // Note that only the project-level-entry-point is left.
           // This is because overriding happens for packages as a whole and there is no attempt to
           // merge entry-points.
           expect(config).toEqual({
+            versionRange: '*',
             entryPoints:
                 {[_Abs('/project-1/node_modules/package-1/project-level-entry-point')]: {}}
           });
@@ -250,4 +310,17 @@ runInEachFileSystem(() => {
       });
     });
   });
+
+  function packageWithConfigFiles(packageName: string, entryPointName: string, version: string) {
+    return [
+      {
+        name: _Abs(`/project-1/node_modules/${packageName}/ngcc.config.js`),
+        contents: `module.exports = {entryPoints: { './${entryPointName}': {}}}`
+      },
+      {
+        name: _Abs(`/project-1/node_modules/${packageName}/package.json`),
+        contents: `{ "version": "${version}" }`
+      }
+    ];
+  }
 });

packages/compiler-cli/package.json

@@ -17,6 +17,7 @@
     "convert-source-map": "^1.5.1",
     "dependency-graph": "^0.7.2",
     "magic-string": "^0.25.0",
+    "semver": "^6.3.0",
     "source-map": "^0.6.1",
     "tslib": "^1.9.0",
     "yargs": "13.1.0"

yarn.lock

@@ -877,6 +877,11 @@
   resolved "https://registry.yarnpkg.com/@types/selenium-webdriver/-/selenium-webdriver-3.0.14.tgz#0b20a2370e6b1b8322c9c3dfcaa409e6c7c0c0a9"
   integrity sha512-4GbNCDs98uHCT/OMv40qQC/OpoPbYn9XdXeTiFwHBBFO6eJhYEPUu2zDKirXSbHlvDV8oZ9l8EQ+HrEx/YS9DQ==
 
+"@types/semver@^6.0.2":
+  version "6.0.2"
+  resolved "https://registry.yarnpkg.com/@types/semver/-/semver-6.0.2.tgz#5e8b09f0e4af53034b1d0fb9977a277847836205"
+  integrity sha512-G1Ggy7/9Nsa1Jt2yiBR2riEuyK2DFNnqow6R7cromXPMNynackRY1vqFTLz/gwnef1LHokbXThcPhqMRjUbkpQ==
+
 "@types/shelljs@^0.7.8":
   version "0.7.9"
   resolved "https://registry.yarnpkg.com/@types/shelljs/-/shelljs-0.7.9.tgz#3abecb72d9cad9cd4b0e7cb86ed10a97d93ba602"
@@ -10057,11 +10062,6 @@ semver@5.1.0:
   resolved "https://registry.yarnpkg.com/semver/-/semver-5.1.0.tgz#85f2cf8550465c4df000cf7d86f6b054106ab9e5"
   integrity sha1-hfLPhVBGXE3wAM99hvawVBBqueU=
 
-semver@5.4.1:
-  version "5.4.1"
-  resolved "https://registry.yarnpkg.com/semver/-/semver-5.4.1.tgz#e059c09d8571f0540823733433505d3a2f00b18e"
-  integrity sha512-WfG/X9+oATh81XtllIo/I8gOiY9EXRdv1cQdyykeXK17YcUW3EXUAi2To4pcH6nZtJPr7ZOpM5OMyWJZm+8Rsg==
-
 semver@5.5.0:
   version "5.5.0"
   resolved "https://registry.yarnpkg.com/semver/-/semver-5.5.0.tgz#dc4bbc7a6ca9d916dee5d43516f0092b58f7b8ab"
@@ -10072,6 +10072,11 @@ semver@6.0.0:
   resolved "https://registry.yarnpkg.com/semver/-/semver-6.0.0.tgz#05e359ee571e5ad7ed641a6eec1e547ba52dea65"
   integrity sha512-0UewU+9rFapKFnlbirLi3byoOuhrSsli/z/ihNnvM24vgF+8sNBiI1LZPBSH9wJKUwaUbw+s3hToDLCXkrghrQ==
 
+semver@^6.3.0:
+  version "6.3.0"
+  resolved "https://registry.yarnpkg.com/semver/-/semver-6.3.0.tgz#ee0a64c8af5e8ceea67687b133761e1becbd1d3d"
+  integrity sha512-b39TBaTSfV6yBrapU89p5fKekE2m/NwnDocOVruQFS1/veMgdzuPcnOM34M6CwxW8jH/lxEa5rBoDeUwu5HHTw==
+
 semver@~5.0.1:
   version "5.0.3"
   resolved "https://registry.yarnpkg.com/semver/-/semver-5.0.3.tgz#77466de589cd5d3c95f138aa78bc569a3cb5d27a"