angular-cn/packages/core/schematics/migrations/module-with-providers/index.ts

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/**
* @license
* Copyright Google Inc. All Rights Reserved.
*
* 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 {Rule, SchematicContext, SchematicsException, Tree, UpdateRecorder} from '@angular-devkit/schematics';
import {dirname, relative} from 'path';
import * as ts from 'typescript';
import {getProjectTsConfigPaths} from '../../utils/project_tsconfig_paths';
import {createMigrationCompilerHost} from '../../utils/typescript/compiler_host';
import {parseTsconfigFile} from '../../utils/typescript/parse_tsconfig';
import {Collector} from './collector';
import {AnalysisFailure, ModuleWithProvidersTransform} from './transform';
/**
* Runs the ModuleWithProviders migration for all TypeScript projects in the current CLI workspace.
*/
export default function(): Rule {
return (tree: Tree, ctx: SchematicContext) => {
const {buildPaths, testPaths} = getProjectTsConfigPaths(tree);
const basePath = process.cwd();
const allPaths = [...buildPaths, ...testPaths];
const failures: string[] = [];
if (!allPaths.length) {
throw new SchematicsException(
'Could not find any tsconfig file. Cannot migrate ModuleWithProviders.');
}
for (const tsconfigPath of allPaths) {
failures.push(...runModuleWithProvidersMigration(tree, tsconfigPath, basePath));
}
if (failures.length) {
ctx.logger.info('Could not migrate all instances of ModuleWithProviders');
ctx.logger.info('Please manually fix the following failures:');
failures.forEach(message => ctx.logger.warn(`${message}`));
}
};
}
function runModuleWithProvidersMigration(tree: Tree, tsconfigPath: string, basePath: string) {
const parsed = parseTsconfigFile(tsconfigPath, dirname(tsconfigPath));
const host = createMigrationCompilerHost(tree, parsed.options, basePath);
const failures: string[] = [];
const program = ts.createProgram(parsed.fileNames, parsed.options, host);
const typeChecker = program.getTypeChecker();
const collector = new Collector(typeChecker);
const sourceFiles = program.getSourceFiles().filter(
f => !f.isDeclarationFile && !program.isSourceFileFromExternalLibrary(f));
// Analyze source files by detecting all modules.
sourceFiles.forEach(sourceFile => collector.visitNode(sourceFile));
const {resolvedModules, resolvedNonGenerics} = collector;
const transformer = new ModuleWithProvidersTransform(typeChecker, getUpdateRecorder);
const updateRecorders = new Map<ts.SourceFile, UpdateRecorder>();
[...resolvedModules.reduce(
(failures, m) => failures.concat(transformer.migrateModule(m)), [] as AnalysisFailure[]),
...resolvedNonGenerics.reduce(
(failures, t) => failures.concat(transformer.migrateType(t)), [] as AnalysisFailure[])]
.forEach(({message, node}) => {
const nodeSourceFile = node.getSourceFile();
const relativeFilePath = relative(basePath, nodeSourceFile.fileName);
const {line, character} =
ts.getLineAndCharacterOfPosition(node.getSourceFile(), node.getStart());
failures.push(`${relativeFilePath}@${line + 1}:${character + 1}: ${message}`);
});
// Walk through each update recorder and commit the update. We need to commit the
// updates in batches per source file as there can be only one recorder per source
// file in order to avoid shift character offsets.
updateRecorders.forEach(recorder => tree.commitUpdate(recorder));
return failures;
/** Gets the update recorder for the specified source file. */
function getUpdateRecorder(sourceFile: ts.SourceFile): UpdateRecorder {
if (updateRecorders.has(sourceFile)) {
return updateRecorders.get(sourceFile) !;
}
const recorder = tree.beginUpdate(relative(basePath, sourceFile.fileName));
updateRecorders.set(sourceFile, recorder);
return recorder;
}
}