Function migrate

packages/core/schematics/ng-generate/inject-migration/index.ts:24–64

(options: Options)

}

export function migrate(options: Options): Rule {
  return async (tree: Tree, context: SchematicContext) => {
    const basePath = process.cwd();
    let pathToMigrate: string | undefined;
    if (options.path) {
      if (options.path.startsWith('..')) {
        throw new SchematicsException(
          'Cannot run inject migration outside of the current project.',
        );
      }
      pathToMigrate = normalizePath(join(basePath, options.path));
    }

    const {buildPaths, testPaths} = await getProjectTsConfigPaths(tree);
    const allPaths = [...buildPaths, ...testPaths];

    if (!allPaths.length) {
      context.logger.warn('Could not find any tsconfig file. Cannot run the inject migration.');
      return;
    }

    let sourceFilesCount = 0;

    for (const tsconfigPath of allPaths) {
      const program = createMigrationProgram(tree, tsconfigPath, basePath);
      const sourceFiles = program
        .getSourceFiles()
        .filter(
          (sourceFile) =>
            (pathToMigrate ? sourceFile.fileName.startsWith(pathToMigrate) : true) &&
            canMigrateFile(basePath, sourceFile, program),
        );

      sourceFilesCount += runInjectMigration(tree, sourceFiles, basePath, options);
    }

    if (sourceFilesCount === 0) {
      context.logger.warn('Inject migration did not find any files to migrate');
    }
  };
}

function runInjectMigration(
  tree: Tree,