@angular/core
Version:
Angular - the core framework
224 lines • 36.4 kB
JavaScript
/**
* @license
* Copyright Google LLC 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
*/
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
return new (P || (P = Promise))(function (resolve, reject) {
function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
step((generator = generator.apply(thisArg, _arguments || [])).next());
});
};
(function (factory) {
if (typeof module === "object" && typeof module.exports === "object") {
var v = factory(require, exports);
if (v !== undefined) module.exports = v;
}
else if (typeof define === "function" && define.amd) {
define("@angular/core/schematics/migrations/static-queries", ["require", "exports", "@angular-devkit/schematics", "path", "rxjs", "typescript", "@angular/core/schematics/utils/ng_component_template", "@angular/core/schematics/utils/project_tsconfig_paths", "@angular/core/schematics/utils/typescript/compiler_host", "@angular/core/schematics/migrations/static-queries/angular/ng_query_visitor", "@angular/core/schematics/migrations/static-queries/strategies/template_strategy/template_strategy", "@angular/core/schematics/migrations/static-queries/strategies/test_strategy/test_strategy", "@angular/core/schematics/migrations/static-queries/strategies/usage_strategy/usage_strategy", "@angular/core/schematics/migrations/static-queries/transform"], factory);
}
})(function (require, exports) {
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const schematics_1 = require("@angular-devkit/schematics");
const path_1 = require("path");
const rxjs_1 = require("rxjs");
const ts = require("typescript");
const ng_component_template_1 = require("@angular/core/schematics/utils/ng_component_template");
const project_tsconfig_paths_1 = require("@angular/core/schematics/utils/project_tsconfig_paths");
const compiler_host_1 = require("@angular/core/schematics/utils/typescript/compiler_host");
const ng_query_visitor_1 = require("@angular/core/schematics/migrations/static-queries/angular/ng_query_visitor");
const template_strategy_1 = require("@angular/core/schematics/migrations/static-queries/strategies/template_strategy/template_strategy");
const test_strategy_1 = require("@angular/core/schematics/migrations/static-queries/strategies/test_strategy/test_strategy");
const usage_strategy_1 = require("@angular/core/schematics/migrations/static-queries/strategies/usage_strategy/usage_strategy");
const transform_1 = require("@angular/core/schematics/migrations/static-queries/transform");
var SELECTED_STRATEGY;
(function (SELECTED_STRATEGY) {
SELECTED_STRATEGY[SELECTED_STRATEGY["TEMPLATE"] = 0] = "TEMPLATE";
SELECTED_STRATEGY[SELECTED_STRATEGY["USAGE"] = 1] = "USAGE";
SELECTED_STRATEGY[SELECTED_STRATEGY["TESTS"] = 2] = "TESTS";
})(SELECTED_STRATEGY || (SELECTED_STRATEGY = {}));
/** Entry point for the V8 static-query migration. */
function default_1() {
return (tree, context) => {
// We need to cast the returned "Observable" to "any" as there is a
// RxJS version mismatch that breaks the TS compilation.
return rxjs_1.from(runMigration(tree, context).then(() => tree));
};
}
exports.default = default_1;
/** Runs the V8 migration static-query migration for all determined TypeScript projects. */
function runMigration(tree, context) {
return __awaiter(this, void 0, void 0, function* () {
const { buildPaths, testPaths } = project_tsconfig_paths_1.getProjectTsConfigPaths(tree);
const basePath = process.cwd();
const logger = context.logger;
if (!buildPaths.length && !testPaths.length) {
throw new schematics_1.SchematicsException('Could not find any tsconfig file. Cannot migrate queries ' +
'to add static flag.');
}
const analyzedFiles = new Set();
const buildProjects = new Set();
const failures = [];
const strategy = process.env['NG_STATIC_QUERY_USAGE_STRATEGY'] === 'true' ?
SELECTED_STRATEGY.USAGE :
SELECTED_STRATEGY.TEMPLATE;
for (const tsconfigPath of buildPaths) {
const project = analyzeProject(tree, tsconfigPath, basePath, analyzedFiles, logger);
if (project) {
buildProjects.add(project);
}
}
if (buildProjects.size) {
for (let project of Array.from(buildProjects.values())) {
failures.push(...yield runStaticQueryMigration(tree, project, strategy, logger));
}
}
// For the "test" tsconfig projects we always want to use the test strategy as
// we can't detect the proper timing within spec files.
for (const tsconfigPath of testPaths) {
const project = yield analyzeProject(tree, tsconfigPath, basePath, analyzedFiles, logger);
if (project) {
failures.push(...yield runStaticQueryMigration(tree, project, SELECTED_STRATEGY.TESTS, logger));
}
}
if (failures.length) {
logger.info('');
logger.info('Some queries could not be migrated automatically. Please go');
logger.info('through these manually and apply the appropriate timing.');
logger.info('For more info on how to choose a flag, please see: ');
logger.info('https://v8.angular.io/guide/static-query-migration');
failures.forEach(failure => logger.warn(`⮑ ${failure}`));
}
});
}
/**
* Analyzes the given TypeScript project by looking for queries that need to be
* migrated. In case there are no queries that can be migrated, null is returned.
*/
function analyzeProject(tree, tsconfigPath, basePath, analyzedFiles, logger) {
const { program, host } = compiler_host_1.createMigrationProgram(tree, tsconfigPath, basePath);
const syntacticDiagnostics = program.getSyntacticDiagnostics();
// Syntactic TypeScript errors can throw off the query analysis and therefore we want
// to notify the developer that we couldn't analyze parts of the project. Developers
// can just re-run the migration after fixing these failures.
if (syntacticDiagnostics.length) {
logger.warn(`\nTypeScript project "${tsconfigPath}" has syntactical errors which could cause ` +
`an incomplete migration. Please fix the following failures and rerun the migration:`);
logger.error(ts.formatDiagnostics(syntacticDiagnostics, host));
logger.info('Migration can be rerun with: "ng update @angular/core --from 7 --to 8 --migrate-only"\n');
}
const typeChecker = program.getTypeChecker();
const sourceFiles = program.getSourceFiles().filter(f => !f.isDeclarationFile && !program.isSourceFileFromExternalLibrary(f));
const queryVisitor = new ng_query_visitor_1.NgQueryResolveVisitor(typeChecker);
// Analyze all project source-files and collect all queries that
// need to be migrated.
sourceFiles.forEach(sourceFile => {
const relativePath = path_1.relative(basePath, sourceFile.fileName);
// Only look for queries within the current source files if the
// file has not been analyzed before.
if (!analyzedFiles.has(relativePath)) {
analyzedFiles.add(relativePath);
queryVisitor.visitNode(sourceFile);
}
});
if (queryVisitor.resolvedQueries.size === 0) {
return null;
}
return { program, host, tsconfigPath, typeChecker, basePath, queryVisitor, sourceFiles };
}
/**
* Runs the static query migration for the given project. The schematic analyzes all
* queries within the project and sets up the query timing based on the current usage
* of the query property. e.g. a view query that is not used in any lifecycle hook does
* not need to be static and can be set up with "static: false".
*/
function runStaticQueryMigration(tree, project, selectedStrategy, logger) {
return __awaiter(this, void 0, void 0, function* () {
const { sourceFiles, typeChecker, host, queryVisitor, tsconfigPath, basePath } = project;
const printer = ts.createPrinter();
const failureMessages = [];
const templateVisitor = new ng_component_template_1.NgComponentTemplateVisitor(typeChecker);
// If the "usage" strategy is selected, we also need to add the query visitor
// to the analysis visitors so that query usage in templates can be also checked.
if (selectedStrategy === SELECTED_STRATEGY.USAGE) {
sourceFiles.forEach(s => templateVisitor.visitNode(s));
}
const { resolvedQueries, classMetadata } = queryVisitor;
const { resolvedTemplates } = templateVisitor;
if (selectedStrategy === SELECTED_STRATEGY.USAGE) {
// Add all resolved templates to the class metadata if the usage strategy is used. This
// is necessary in order to be able to check component templates for static query usage.
resolvedTemplates.forEach(template => {
if (classMetadata.has(template.container)) {
classMetadata.get(template.container).template = template;
}
});
}
let strategy;
if (selectedStrategy === SELECTED_STRATEGY.USAGE) {
strategy = new usage_strategy_1.QueryUsageStrategy(classMetadata, typeChecker);
}
else if (selectedStrategy === SELECTED_STRATEGY.TESTS) {
strategy = new test_strategy_1.QueryTestStrategy();
}
else {
strategy = new template_strategy_1.QueryTemplateStrategy(tsconfigPath, classMetadata, host);
}
try {
strategy.setup();
}
catch (e) {
if (selectedStrategy === SELECTED_STRATEGY.TEMPLATE) {
logger.warn(`\nThe template migration strategy uses the Angular compiler ` +
`internally and therefore projects that no longer build successfully after ` +
`the update cannot use the template migration strategy. Please ensure ` +
`there are no AOT compilation errors.\n`);
}
// In case the strategy could not be set up properly, we just exit the
// migration. We don't want to throw an exception as this could mean
// that other migrations are interrupted.
logger.warn(`Could not setup migration strategy for "${project.tsconfigPath}". The ` +
`following error has been reported:\n`);
logger.error(`${e.toString()}\n`);
logger.info('Migration can be rerun with: "ng update @angular/core --from 7 --to 8 --migrate-only"\n');
return [];
}
// Walk through all source files that contain resolved queries and update
// the source files if needed. Note that we need to update multiple queries
// within a source file within the same recorder in order to not throw off
// the TypeScript node offsets.
resolvedQueries.forEach((queries, sourceFile) => {
const relativePath = path_1.relative(basePath, sourceFile.fileName);
const update = tree.beginUpdate(relativePath);
// Compute the query timing for all resolved queries and update the
// query definitions to explicitly set the determined query timing.
queries.forEach(q => {
const queryExpr = q.decorator.node.expression;
const { timing, message } = strategy.detectTiming(q);
const result = transform_1.getTransformedQueryCallExpr(q, timing, !!message);
if (!result) {
return;
}
const newText = printer.printNode(ts.EmitHint.Unspecified, result.node, sourceFile);
// Replace the existing query decorator call expression with the updated
// call expression node.
update.remove(queryExpr.getStart(), queryExpr.getWidth());
update.insertRight(queryExpr.getStart(), newText);
if (result.failureMessage || message) {
const { line, character } = ts.getLineAndCharacterOfPosition(sourceFile, q.decorator.node.getStart());
failureMessages.push(`${relativePath}@${line + 1}:${character + 1}: ${result.failureMessage || message}`);
}
});
tree.commitUpdate(update);
});
return failureMessages;
});
}
});
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* @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nimport {logging} from '@angular-devkit/core';\nimport {Rule, SchematicContext, SchematicsException, Tree} from '@angular-devkit/schematics';\nimport {relative} from 'path';\nimport {from} from 'rxjs';\nimport * as ts from 'typescript';\n\nimport {NgComponentTemplateVisitor} from '../../utils/ng_component_template';\nimport {getProjectTsConfigPaths} from '../../utils/project_tsconfig_paths';\nimport {createMigrationProgram} from '../../utils/typescript/compiler_host';\n\nimport {NgQueryResolveVisitor} from './angular/ng_query_visitor';\nimport {QueryTemplateStrategy} from './strategies/template_strategy/template_strategy';\nimport {QueryTestStrategy} from './strategies/test_strategy/test_strategy';\nimport {TimingStrategy} from './strategies/timing-strategy';\nimport {QueryUsageStrategy} from './strategies/usage_strategy/usage_strategy';\nimport {getTransformedQueryCallExpr} from './transform';\n\nenum SELECTED_STRATEGY {\n  TEMPLATE,\n  USAGE,\n  TESTS,\n}\n\ninterface AnalyzedProject {\n  program: ts.Program;\n  host: ts.CompilerHost;\n  queryVisitor: NgQueryResolveVisitor;\n  sourceFiles: ts.SourceFile[];\n  basePath: string;\n  typeChecker: ts.TypeChecker;\n  tsconfigPath: string;\n}\n\n/** Entry point for the V8 static-query migration. */\nexport default function(): Rule {\n  return (tree: Tree, context: SchematicContext) => {\n    // We need to cast the returned \"Observable\" to \"any\" as there is a\n    // RxJS version mismatch that breaks the TS compilation.\n    return from(runMigration(tree, context).then(() => tree)) as any;\n  };\n}\n\n/** Runs the V8 migration static-query migration for all determined TypeScript projects. */\nasync function runMigration(tree: Tree, context: SchematicContext) {\n  const {buildPaths, testPaths} = getProjectTsConfigPaths(tree);\n  const basePath = process.cwd();\n  const logger = context.logger;\n\n  if (!buildPaths.length && !testPaths.length) {\n    throw new SchematicsException(\n        'Could not find any tsconfig file. Cannot migrate queries ' +\n        'to add static flag.');\n  }\n\n  const analyzedFiles = new Set<string>();\n  const buildProjects = new Set<AnalyzedProject>();\n  const failures = [];\n  const strategy = process.env['NG_STATIC_QUERY_USAGE_STRATEGY'] === 'true' ?\n      SELECTED_STRATEGY.USAGE :\n      SELECTED_STRATEGY.TEMPLATE;\n\n  for (const tsconfigPath of buildPaths) {\n    const project = analyzeProject(tree, tsconfigPath, basePath, analyzedFiles, logger);\n    if (project) {\n      buildProjects.add(project);\n    }\n  }\n\n  if (buildProjects.size) {\n    for (let project of Array.from(buildProjects.values())) {\n      failures.push(...await runStaticQueryMigration(tree, project, strategy, logger));\n    }\n  }\n\n  // For the \"test\" tsconfig projects we always want to use the test strategy as\n  // we can't detect the proper timing within spec files.\n  for (const tsconfigPath of testPaths) {\n    const project = await analyzeProject(tree, tsconfigPath, basePath, analyzedFiles, logger);\n    if (project) {\n      failures.push(\n          ...await runStaticQueryMigration(tree, project, SELECTED_STRATEGY.TESTS, logger));\n    }\n  }\n\n  if (failures.length) {\n    logger.info('');\n    logger.info('Some queries could not be migrated automatically. Please go');\n    logger.info('through these manually and apply the appropriate timing.');\n    logger.info('For more info on how to choose a flag, please see: ');\n    logger.info('https://v8.angular.io/guide/static-query-migration');\n    failures.forEach(failure => logger.warn(`⮑   ${failure}`));\n  }\n}\n\n/**\n * Analyzes the given TypeScript project by looking for queries that need to be\n * migrated. In case there are no queries that can be migrated, null is returned.\n */\nfunction analyzeProject(\n    tree: Tree, tsconfigPath: string, basePath: string, analyzedFiles: Set<string>,\n    logger: logging.LoggerApi): AnalyzedProject|null {\n  const {program, host} = createMigrationProgram(tree, tsconfigPath, basePath);\n  const syntacticDiagnostics = program.getSyntacticDiagnostics();\n\n  // Syntactic TypeScript errors can throw off the query analysis and therefore we want\n  // to notify the developer that we couldn't analyze parts of the project. Developers\n  // can just re-run the migration after fixing these failures.\n  if (syntacticDiagnostics.length) {\n    logger.warn(\n        `\\nTypeScript project \"${tsconfigPath}\" has syntactical errors which could cause ` +\n        `an incomplete migration. Please fix the following failures and rerun the migration:`);\n    logger.error(ts.formatDiagnostics(syntacticDiagnostics, host));\n    logger.info(\n        'Migration can be rerun with: \"ng update @angular/core --from 7 --to 8 --migrate-only\"\\n');\n  }\n\n  const typeChecker = program.getTypeChecker();\n  const sourceFiles = program.getSourceFiles().filter(\n      f => !f.isDeclarationFile && !program.isSourceFileFromExternalLibrary(f));\n  const queryVisitor = new NgQueryResolveVisitor(typeChecker);\n\n  // Analyze all project source-files and collect all queries that\n  // need to be migrated.\n  sourceFiles.forEach(sourceFile => {\n    const relativePath = relative(basePath, sourceFile.fileName);\n\n    // Only look for queries within the current source files if the\n    // file has not been analyzed before.\n    if (!analyzedFiles.has(relativePath)) {\n      analyzedFiles.add(relativePath);\n      queryVisitor.visitNode(sourceFile);\n    }\n  });\n\n  if (queryVisitor.resolvedQueries.size === 0) {\n    return null;\n  }\n\n  return {program, host, tsconfigPath, typeChecker, basePath, queryVisitor, sourceFiles};\n}\n\n/**\n * Runs the static query migration for the given project. The schematic analyzes all\n * queries within the project and sets up the query timing based on the current usage\n * of the query property. e.g. a view query that is not used in any lifecycle hook does\n * not need to be static and can be set up with \"static: false\".\n */\nasync function runStaticQueryMigration(\n    tree: Tree, project: AnalyzedProject, selectedStrategy: SELECTED_STRATEGY,\n    logger: logging.LoggerApi): Promise<string[]> {\n  const {sourceFiles, typeChecker, host, queryVisitor, tsconfigPath, basePath} = project;\n  const printer = ts.createPrinter();\n  const failureMessages: string[] = [];\n  const templateVisitor = new NgComponentTemplateVisitor(typeChecker);\n\n  // If the \"usage\" strategy is selected, we also need to add the query visitor\n  // to the analysis visitors so that query usage in templates can be also checked.\n  if (selectedStrategy === SELECTED_STRATEGY.USAGE) {\n    sourceFiles.forEach(s => templateVisitor.visitNode(s));\n  }\n\n  const {resolvedQueries, classMetadata} = queryVisitor;\n  const {resolvedTemplates} = templateVisitor;\n\n  if (selectedStrategy === SELECTED_STRATEGY.USAGE) {\n    // Add all resolved templates to the class metadata if the usage strategy is used. This\n    // is necessary in order to be able to check component templates for static query usage.\n    resolvedTemplates.forEach(template => {\n      if (classMetadata.has(template.container)) {\n        classMetadata.get(template.container)!.template = template;\n      }\n    });\n  }\n\n  let strategy: TimingStrategy;\n  if (selectedStrategy === SELECTED_STRATEGY.USAGE) {\n    strategy = new QueryUsageStrategy(classMetadata, typeChecker);\n  } else if (selectedStrategy === SELECTED_STRATEGY.TESTS) {\n    strategy = new QueryTestStrategy();\n  } else {\n    strategy = new QueryTemplateStrategy(tsconfigPath, classMetadata, host);\n  }\n\n  try {\n    strategy.setup();\n  } catch (e) {\n    if (selectedStrategy === SELECTED_STRATEGY.TEMPLATE) {\n      logger.warn(\n          `\\nThe template migration strategy uses the Angular compiler ` +\n          `internally and therefore projects that no longer build successfully after ` +\n          `the update cannot use the template migration strategy. Please ensure ` +\n          `there are no AOT compilation errors.\\n`);\n    }\n    // In case the strategy could not be set up properly, we just exit the\n    // migration. We don't want to throw an exception as this could mean\n    // that other migrations are interrupted.\n    logger.warn(\n        `Could not setup migration strategy for \"${project.tsconfigPath}\". The ` +\n        `following error has been reported:\\n`);\n    logger.error(`${e.toString()}\\n`);\n    logger.info(\n        'Migration can be rerun with: \"ng update @angular/core --from 7 --to 8 --migrate-only\"\\n');\n    return [];\n  }\n\n  // Walk through all source files that contain resolved queries and update\n  // the source files if needed. Note that we need to update multiple queries\n  // within a source file within the same recorder in order to not throw off\n  // the TypeScript node offsets.\n  resolvedQueries.forEach((queries, sourceFile) => {\n    const relativePath = relative(basePath, sourceFile.fileName);\n    const update = tree.beginUpdate(relativePath);\n\n    // Compute the query timing for all resolved queries and update the\n    // query definitions to explicitly set the determined query timing.\n    queries.forEach(q => {\n      const queryExpr = q.decorator.node.expression;\n      const {timing, message} = strategy.detectTiming(q);\n      const result = getTransformedQueryCallExpr(q, timing, !!message);\n\n      if (!result) {\n        return;\n      }\n\n      const newText = printer.printNode(ts.EmitHint.Unspecified, result.node, sourceFile);\n\n      // Replace the existing query decorator call expression with the updated\n      // call expression node.\n      update.remove(queryExpr.getStart(), queryExpr.getWidth());\n      update.insertRight(queryExpr.getStart(), newText);\n\n      if (result.failureMessage || message) {\n        const {line, character} =\n            ts.getLineAndCharacterOfPosition(sourceFile, q.decorator.node.getStart());\n        failureMessages.push(\n            `${relativePath}@${line + 1}:${character + 1}: ${result.failureMessage || message}`);\n      }\n    });\n\n    tree.commitUpdate(update);\n  });\n\n  return failureMessages;\n}\n"]}