@angular/material
Version:
Angular Material
174 lines • 28.2 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
*/
Object.defineProperty(exports, "__esModule", { value: true });
exports.SecondaryEntryPointsMigration = void 0;
const schematics_1 = require("@angular/cdk/schematics");
const ts = require("typescript");
const module_specifiers_1 = require("../../../ng-update/typescript/module-specifiers");
const ONLY_SUBPACKAGE_FAILURE_STR = `Importing from "@angular/material" is deprecated. ` +
`Instead import from the entry-point the symbol belongs to.`;
const NO_IMPORT_NAMED_SYMBOLS_FAILURE_STR = `Imports from Angular Material should import ` +
`specific symbols rather than importing the entire library.`;
/**
* Regex for testing file paths against to determine if the file is from the
* Angular Material library.
*/
const ANGULAR_MATERIAL_FILEPATH_REGEX = new RegExp(`${module_specifiers_1.materialModuleSpecifier}/(.*?)/`);
/**
* Mapping of Material symbol names to their module names. Used as a fallback if
* we didn't manage to resolve the module name of a symbol using the type checker.
*/
const ENTRY_POINT_MAPPINGS = require('./material-symbols.json');
/**
* Migration that updates imports which refer to the primary Angular Material
* entry-point to use the appropriate secondary entry points (e.g. @angular/material/button).
*/
class SecondaryEntryPointsMigration extends schematics_1.Migration {
constructor() {
super(...arguments);
this.printer = ts.createPrinter();
// Only enable this rule if the migration targets version 8. The primary
// entry-point of Material has been marked as deprecated in version 8.
this.enabled = this.targetVersion === schematics_1.TargetVersion.V8 || this.targetVersion === schematics_1.TargetVersion.V9;
}
visitNode(declaration) {
// Only look at import declarations.
if (!ts.isImportDeclaration(declaration) ||
!ts.isStringLiteralLike(declaration.moduleSpecifier)) {
return;
}
const importLocation = declaration.moduleSpecifier.text;
// If the import module is not @angular/material, skip the check.
if (importLocation !== module_specifiers_1.materialModuleSpecifier) {
return;
}
// If no import clause is found, or nothing is named as a binding in the
// import, add failure saying to import symbols in clause.
if (!declaration.importClause || !declaration.importClause.namedBindings) {
this.createFailureAtNode(declaration, NO_IMPORT_NAMED_SYMBOLS_FAILURE_STR);
return;
}
// All named bindings in import clauses must be named symbols, otherwise add
// failure saying to import symbols in clause.
if (!ts.isNamedImports(declaration.importClause.namedBindings)) {
this.createFailureAtNode(declaration, NO_IMPORT_NAMED_SYMBOLS_FAILURE_STR);
return;
}
// If no symbols are in the named bindings then add failure saying to
// import symbols in clause.
if (!declaration.importClause.namedBindings.elements.length) {
this.createFailureAtNode(declaration, NO_IMPORT_NAMED_SYMBOLS_FAILURE_STR);
return;
}
// Whether the existing import declaration is using a single quote module specifier.
const singleQuoteImport = declaration.moduleSpecifier.getText()[0] === `'`;
// Map which consists of secondary entry-points and import specifiers which are used
// within the current import declaration.
const importMap = new Map();
// Determine the subpackage each symbol in the namedBinding comes from.
for (const element of declaration.importClause.namedBindings.elements) {
const elementName = element.propertyName ? element.propertyName : element.name;
// Try to resolve the module name via the type checker, and if it fails, fall back to
// resolving it from our list of symbol to entry point mappings. Using the type checker is
// more accurate and doesn't require us to keep a list of symbols, but it won't work if
// the symbols don't exist anymore (e.g. after we remove the top-level @angular/material).
const moduleName = resolveModuleName(elementName, this.typeChecker) ||
ENTRY_POINT_MAPPINGS[elementName.text] ||
null;
if (!moduleName) {
this.createFailureAtNode(element, `"${element.getText()}" was not found in the Material library.`);
return;
}
// The module name where the symbol is defined e.g. card, dialog. The
// first capture group is contains the module name.
if (importMap.has(moduleName)) {
importMap.get(moduleName).push(element);
}
else {
importMap.set(moduleName, [element]);
}
}
// Transforms the import declaration into multiple import declarations that import
// the given symbols from the individual secondary entry-points. For example:
// import {MatCardModule, MatCardTitle} from '@angular/material/card';
// import {MatRadioModule} from '@angular/material/radio';
const newImportStatements = Array.from(importMap.entries())
.sort()
.map(([name, elements]) => {
const newImport = ts.createImportDeclaration(undefined, undefined, ts.createImportClause(undefined, ts.createNamedImports(elements)), createStringLiteral(`${module_specifiers_1.materialModuleSpecifier}/${name}`, singleQuoteImport));
return this.printer.printNode(ts.EmitHint.Unspecified, newImport, declaration.getSourceFile());
})
.join('\n');
// Without any import statements that were generated, we can assume that this was an empty
// import declaration. We still want to add a failure in order to make developers aware that
// importing from "@angular/material" is deprecated.
if (!newImportStatements) {
this.createFailureAtNode(declaration.moduleSpecifier, ONLY_SUBPACKAGE_FAILURE_STR);
return;
}
const filePath = this.fileSystem.resolve(declaration.moduleSpecifier.getSourceFile().fileName);
const recorder = this.fileSystem.edit(filePath);
// Perform the replacement that switches the primary entry-point import to
// the individual secondary entry-point imports.
recorder.remove(declaration.getStart(), declaration.getWidth());
recorder.insertRight(declaration.getStart(), newImportStatements);
}
}
exports.SecondaryEntryPointsMigration = SecondaryEntryPointsMigration;
/**
* Creates a string literal from the specified text.
* @param text Text of the string literal.
* @param singleQuotes Whether single quotes should be used when printing the literal node.
*/
function createStringLiteral(text, singleQuotes) {
const literal = ts.createStringLiteral(text);
// See: https://github.com/microsoft/TypeScript/blob/master/src/compiler/utilities.ts#L584-L590
literal.singleQuote = singleQuotes;
return literal;
}
/** Gets the symbol that contains the value declaration of the given node. */
function getDeclarationSymbolOfNode(node, checker) {
const symbol = checker.getSymbolAtLocation(node);
// Symbols can be aliases of the declaration symbol. e.g. in named import specifiers.
// We need to resolve the aliased symbol back to the declaration symbol.
// tslint:disable-next-line:no-bitwise
if (symbol && (symbol.flags & ts.SymbolFlags.Alias) !== 0) {
return checker.getAliasedSymbol(symbol);
}
return symbol;
}
/** Tries to resolve the name of the Material module that a node is imported from. */
function resolveModuleName(node, typeChecker) {
var _a;
// Get the symbol for the named binding element. Note that we cannot determine the
// value declaration based on the type of the element as types are not necessarily
// specific to a given secondary entry-point (e.g. exports with the type of "string")
// would resolve to the module types provided by TypeScript itself.
const symbol = getDeclarationSymbolOfNode(node, typeChecker);
// If the symbol can't be found, or no declaration could be found within
// the symbol, add failure to report that the given symbol can't be found.
if (!symbol ||
!(symbol.valueDeclaration || (symbol.declarations && symbol.declarations.length !== 0))) {
return null;
}
// The filename for the source file of the node that contains the
// first declaration of the symbol. All symbol declarations must be
// part of a defining node, so parent can be asserted to be defined.
const resolvedNode = symbol.valueDeclaration || ((_a = symbol.declarations) === null || _a === void 0 ? void 0 : _a[0]);
if (resolvedNode === undefined) {
return null;
}
const sourceFile = resolvedNode.getSourceFile().fileName;
// File the module the symbol belongs to from a regex match of the
// filename. This will always match since only "@angular/material"
// elements are analyzed.
const matches = sourceFile.match(ANGULAR_MATERIAL_FILEPATH_REGEX);
return matches ? matches[1] : null;
}
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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 {Migration, TargetVersion} from '@angular/cdk/schematics';\nimport * as ts from 'typescript';\nimport {materialModuleSpecifier} from '../../../ng-update/typescript/module-specifiers';\n\nconst ONLY_SUBPACKAGE_FAILURE_STR =\n  `Importing from \"@angular/material\" is deprecated. ` +\n  `Instead import from the entry-point the symbol belongs to.`;\n\nconst NO_IMPORT_NAMED_SYMBOLS_FAILURE_STR =\n  `Imports from Angular Material should import ` +\n  `specific symbols rather than importing the entire library.`;\n\n/**\n * Regex for testing file paths against to determine if the file is from the\n * Angular Material library.\n */\nconst ANGULAR_MATERIAL_FILEPATH_REGEX = new RegExp(`${materialModuleSpecifier}/(.*?)/`);\n\n/**\n * Mapping of Material symbol names to their module names. Used as a fallback if\n * we didn't manage to resolve the module name of a symbol using the type checker.\n */\nconst ENTRY_POINT_MAPPINGS: {[name: string]: string} = require('./material-symbols.json');\n\n/**\n * Migration that updates imports which refer to the primary Angular Material\n * entry-point to use the appropriate secondary entry points (e.g. @angular/material/button).\n */\nexport class SecondaryEntryPointsMigration extends Migration<null> {\n  printer = ts.createPrinter();\n\n  // Only enable this rule if the migration targets version 8. The primary\n  // entry-point of Material has been marked as deprecated in version 8.\n  enabled = this.targetVersion === TargetVersion.V8 || this.targetVersion === TargetVersion.V9;\n\n  override visitNode(declaration: ts.Node): void {\n    // Only look at import declarations.\n    if (\n      !ts.isImportDeclaration(declaration) ||\n      !ts.isStringLiteralLike(declaration.moduleSpecifier)\n    ) {\n      return;\n    }\n\n    const importLocation = declaration.moduleSpecifier.text;\n    // If the import module is not @angular/material, skip the check.\n    if (importLocation !== materialModuleSpecifier) {\n      return;\n    }\n\n    // If no import clause is found, or nothing is named as a binding in the\n    // import, add failure saying to import symbols in clause.\n    if (!declaration.importClause || !declaration.importClause.namedBindings) {\n      this.createFailureAtNode(declaration, NO_IMPORT_NAMED_SYMBOLS_FAILURE_STR);\n      return;\n    }\n\n    // All named bindings in import clauses must be named symbols, otherwise add\n    // failure saying to import symbols in clause.\n    if (!ts.isNamedImports(declaration.importClause.namedBindings)) {\n      this.createFailureAtNode(declaration, NO_IMPORT_NAMED_SYMBOLS_FAILURE_STR);\n      return;\n    }\n\n    // If no symbols are in the named bindings then add failure saying to\n    // import symbols in clause.\n    if (!declaration.importClause.namedBindings.elements.length) {\n      this.createFailureAtNode(declaration, NO_IMPORT_NAMED_SYMBOLS_FAILURE_STR);\n      return;\n    }\n\n    // Whether the existing import declaration is using a single quote module specifier.\n    const singleQuoteImport = declaration.moduleSpecifier.getText()[0] === `'`;\n\n    // Map which consists of secondary entry-points and import specifiers which are used\n    // within the current import declaration.\n    const importMap = new Map<string, ts.ImportSpecifier[]>();\n\n    // Determine the subpackage each symbol in the namedBinding comes from.\n    for (const element of declaration.importClause.namedBindings.elements) {\n      const elementName = element.propertyName ? element.propertyName : element.name;\n\n      // Try to resolve the module name via the type checker, and if it fails, fall back to\n      // resolving it from our list of symbol to entry point mappings. Using the type checker is\n      // more accurate and doesn't require us to keep a list of symbols, but it won't work if\n      // the symbols don't exist anymore (e.g. after we remove the top-level @angular/material).\n      const moduleName =\n        resolveModuleName(elementName, this.typeChecker) ||\n        ENTRY_POINT_MAPPINGS[elementName.text] ||\n        null;\n\n      if (!moduleName) {\n        this.createFailureAtNode(\n          element,\n          `\"${element.getText()}\" was not found in the Material library.`,\n        );\n        return;\n      }\n\n      // The module name where the symbol is defined e.g. card, dialog. The\n      // first capture group is contains the module name.\n      if (importMap.has(moduleName)) {\n        importMap.get(moduleName)!.push(element);\n      } else {\n        importMap.set(moduleName, [element]);\n      }\n    }\n\n    // Transforms the import declaration into multiple import declarations that import\n    // the given symbols from the individual secondary entry-points. For example:\n    // import {MatCardModule, MatCardTitle} from '@angular/material/card';\n    // import {MatRadioModule} from '@angular/material/radio';\n    const newImportStatements = Array.from(importMap.entries())\n      .sort()\n      .map(([name, elements]) => {\n        const newImport = ts.createImportDeclaration(\n          undefined,\n          undefined,\n          ts.createImportClause(undefined, ts.createNamedImports(elements)),\n          createStringLiteral(`${materialModuleSpecifier}/${name}`, singleQuoteImport),\n        );\n        return this.printer.printNode(\n          ts.EmitHint.Unspecified,\n          newImport,\n          declaration.getSourceFile(),\n        );\n      })\n      .join('\\n');\n\n    // Without any import statements that were generated, we can assume that this was an empty\n    // import declaration. We still want to add a failure in order to make developers aware that\n    // importing from \"@angular/material\" is deprecated.\n    if (!newImportStatements) {\n      this.createFailureAtNode(declaration.moduleSpecifier, ONLY_SUBPACKAGE_FAILURE_STR);\n      return;\n    }\n\n    const filePath = this.fileSystem.resolve(declaration.moduleSpecifier.getSourceFile().fileName);\n    const recorder = this.fileSystem.edit(filePath);\n\n    // Perform the replacement that switches the primary entry-point import to\n    // the individual secondary entry-point imports.\n    recorder.remove(declaration.getStart(), declaration.getWidth());\n    recorder.insertRight(declaration.getStart(), newImportStatements);\n  }\n}\n\n/**\n * Creates a string literal from the specified text.\n * @param text Text of the string literal.\n * @param singleQuotes Whether single quotes should be used when printing the literal node.\n */\nfunction createStringLiteral(text: string, singleQuotes: boolean): ts.StringLiteral {\n  const literal = ts.createStringLiteral(text);\n  // See: https://github.com/microsoft/TypeScript/blob/master/src/compiler/utilities.ts#L584-L590\n  (literal as any).singleQuote = singleQuotes;\n  return literal;\n}\n\n/** Gets the symbol that contains the value declaration of the given node. */\nfunction getDeclarationSymbolOfNode(node: ts.Node, checker: ts.TypeChecker): ts.Symbol | undefined {\n  const symbol = checker.getSymbolAtLocation(node);\n\n  // Symbols can be aliases of the declaration symbol. e.g. in named import specifiers.\n  // We need to resolve the aliased symbol back to the declaration symbol.\n  // tslint:disable-next-line:no-bitwise\n  if (symbol && (symbol.flags & ts.SymbolFlags.Alias) !== 0) {\n    return checker.getAliasedSymbol(symbol);\n  }\n  return symbol;\n}\n\n/** Tries to resolve the name of the Material module that a node is imported from. */\nfunction resolveModuleName(node: ts.Identifier, typeChecker: ts.TypeChecker): string | null {\n  // Get the symbol for the named binding element. Note that we cannot determine the\n  // value declaration based on the type of the element as types are not necessarily\n  // specific to a given secondary entry-point (e.g. exports with the type of \"string\")\n  // would resolve to the module types provided by TypeScript itself.\n  const symbol = getDeclarationSymbolOfNode(node, typeChecker);\n\n  // If the symbol can't be found, or no declaration could be found within\n  // the symbol, add failure to report that the given symbol can't be found.\n  if (\n    !symbol ||\n    !(symbol.valueDeclaration || (symbol.declarations && symbol.declarations.length !== 0))\n  ) {\n    return null;\n  }\n\n  // The filename for the source file of the node that contains the\n  // first declaration of the symbol. All symbol declarations must be\n  // part of a defining node, so parent can be asserted to be defined.\n  const resolvedNode = symbol.valueDeclaration || symbol.declarations?.[0];\n\n  if (resolvedNode === undefined) {\n    return null;\n  }\n\n  const sourceFile = resolvedNode.getSourceFile().fileName;\n\n  // File the module the symbol belongs to from a regex match of the\n  // filename. This will always match since only \"@angular/material\"\n  // elements are analyzed.\n  const matches = sourceFile.match(ANGULAR_MATERIAL_FILEPATH_REGEX);\n  return matches ? matches[1] : null;\n}\n"]}