How to use typeChecker method in ts-auto-mock

Best JavaScript code snippet using ts-auto-mock

ng_declaration_collector.ts

Source:ng_declaration_collector.ts Github

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1/**2 * @license3 * Copyright Google Inc. All Rights Reserved.4 *5 * Use of this source code is governed by an MIT-style license that can be6 * found in the LICENSE file at https://angular.io/license7 */8import {Reference} from '@angular/compiler-cli/src/ngtsc/imports';9import {PartialEvaluator, ResolvedValue} from '@angular/compiler-cli/src/ngtsc/partial_evaluator';10import * as ts from 'typescript';11import {NgDecorator, getAngularDecorators} from '../../utils/ng_decorators';12import {getPropertyNameText} from '../../utils/typescript/property_name';13/**14 * Visitor that walks through specified TypeScript nodes and collects all defined15 * directives and provider classes. Directives are separated by decorated and16 * undecorated directives.17 */18export class NgDeclarationCollector {19 /** List of resolved directives which are decorated. */20 decoratedDirectives: ts.ClassDeclaration[] = [];21 /** List of resolved providers which are decorated. */22 decoratedProviders: ts.ClassDeclaration[] = [];23 /** Set of resolved Angular declarations which are not decorated. */24 undecoratedDeclarations = new Set<ts.ClassDeclaration>();25 constructor(public typeChecker: ts.TypeChecker, private evaluator: PartialEvaluator) {}26 visitNode(node: ts.Node) {27 if (ts.isClassDeclaration(node)) {28 this._visitClassDeclaration(node);29 }30 ts.forEachChild(node, n => this.visitNode(n));31 }32 private _visitClassDeclaration(node: ts.ClassDeclaration) {33 if (!node.decorators || !node.decorators.length) {34 return;35 }36 const ngDecorators = getAngularDecorators(this.typeChecker, node.decorators);37 const ngModuleDecorator = ngDecorators.find(({name}) => name === 'NgModule');38 if (hasDirectiveDecorator(node, this.typeChecker, ngDecorators)) {39 this.decoratedDirectives.push(node);40 } else if (hasInjectableDecorator(node, this.typeChecker, ngDecorators)) {41 this.decoratedProviders.push(node);42 } else if (ngModuleDecorator) {43 this._visitNgModuleDecorator(ngModuleDecorator);44 }45 }46 private _visitNgModuleDecorator(decorator: NgDecorator) {47 const decoratorCall = decorator.node.expression;48 const metadata = decoratorCall.arguments[0];49 if (!metadata || !ts.isObjectLiteralExpression(metadata)) {50 return;51 }52 let entryComponentsNode: ts.Expression|null = null;53 let declarationsNode: ts.Expression|null = null;54 metadata.properties.forEach(p => {55 if (!ts.isPropertyAssignment(p)) {56 return;57 }58 const name = getPropertyNameText(p.name);59 if (name === 'entryComponents') {60 entryComponentsNode = p.initializer;61 } else if (name === 'declarations') {62 declarationsNode = p.initializer;63 }64 });65 // In case the module specifies the "entryComponents" field, walk through all66 // resolved entry components and collect the referenced directives.67 if (entryComponentsNode) {68 flattenTypeList(this.evaluator.evaluate(entryComponentsNode)).forEach(ref => {69 if (ts.isClassDeclaration(ref.node) &&70 !hasNgDeclarationDecorator(ref.node, this.typeChecker)) {71 this.undecoratedDeclarations.add(ref.node);72 }73 });74 }75 // In case the module specifies the "declarations" field, walk through all76 // resolved declarations and collect the referenced directives.77 if (declarationsNode) {78 flattenTypeList(this.evaluator.evaluate(declarationsNode)).forEach(ref => {79 if (ts.isClassDeclaration(ref.node) &&80 !hasNgDeclarationDecorator(ref.node, this.typeChecker)) {81 this.undecoratedDeclarations.add(ref.node);82 }83 });84 }85 }86}87/** Flattens a list of type references. */88function flattenTypeList(value: ResolvedValue): Reference[] {89 if (Array.isArray(value)) {90 return <Reference[]>value.reduce(91 (res: Reference[], v: ResolvedValue) => res.concat(flattenTypeList(v)), []);92 } else if (value instanceof Reference) {93 return [value];94 }95 return [];96}97/** Checks whether the given node has the "@Directive" or "@Component" decorator set. */98export function hasDirectiveDecorator(99 node: ts.ClassDeclaration, typeChecker: ts.TypeChecker, ngDecorators?: NgDecorator[]): boolean {100 return (ngDecorators || getNgClassDecorators(node, typeChecker))101 .some(({name}) => name === 'Directive' || name === 'Component');102}103/** Checks whether the given node has the "@Injectable" decorator set. */104export function hasInjectableDecorator(105 node: ts.ClassDeclaration, typeChecker: ts.TypeChecker, ngDecorators?: NgDecorator[]): boolean {106 return (ngDecorators || getNgClassDecorators(node, typeChecker))107 .some(({name}) => name === 'Injectable');108}109/** Whether the given node has an explicit decorator that describes an Angular declaration. */110export function hasNgDeclarationDecorator(node: ts.ClassDeclaration, typeChecker: ts.TypeChecker) {111 return getNgClassDecorators(node, typeChecker)112 .some(({name}) => name === 'Component' || name === 'Directive' || name === 'Pipe');113}114/** Gets all Angular decorators of a given class declaration. */115export function getNgClassDecorators(116 node: ts.ClassDeclaration, typeChecker: ts.TypeChecker): NgDecorator[] {117 if (!node.decorators) {118 return [];119 }120 return getAngularDecorators(typeChecker, node.decorators);...

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util.ts

Source:util.ts Github

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1/**2 * @license3 * Copyright Google LLC All Rights Reserved.4 *5 * Use of this source code is governed by an MIT-style license that can be6 * found in the LICENSE file at https://angular.io/license7 */8import ts from 'typescript';9import {getImportSpecifier} from '../../utils/typescript/imports';10export const classes = new Set(['FormArray', 'FormBuilder', 'FormControl', 'FormGroup']);11export const formControl = 'FormControl';12export const untypedPrefix = 'Untyped';13export const forms = '@angular/forms';14export interface MigratableNode {15 node: ts.Node;16 importName: string;17}18export type rewriteFn = (startPos: number, origLength: number, text: string) => void;19export function migrateFile(20 sourceFile: ts.SourceFile, typeChecker: ts.TypeChecker, rewrite: rewriteFn) {21 const imports = getImports(sourceFile);22 // If no relevant classes are imported, we can exit early.23 if (imports.length === 0) return;24 // For each control class, migrate all of its uses.25 for (let i = imports.length; i >= 0; i--) {26 const imp = imports[i];27 const usages = getUsages(sourceFile, typeChecker, imp);28 if (usages.length === 0) {29 // Since there are no usages of this class we need to migrate it, we should completely30 // skip it for the subsequent migration steps.31 imports.splice(i, 1);32 }33 for (const usage of usages) {34 const newName = getUntypedVersionOfImportOrName(usage.importName);35 if (newName === null) {36 // This should never happen.37 console.error(38 `Typed forms migration error: unknown replacement for usage ${usage.node.getText()}`);39 continue;40 }41 rewrite(usage.node.getStart(), usage.node.getWidth(), newName);42 }43 }44 // For each imported control class, migrate to the corresponding uptyped import.45 for (const imp of imports) {46 const untypedClass = getUntypedVersionOfImportOrName(imp.getText());47 if (untypedClass === null) {48 // This should never happen.49 console.error(50 `Typed forms migration error: unknown untyped version of import ${imp.getText()}`);51 continue;52 }53 if (getImportSpecifier(sourceFile, forms, untypedClass)) {54 // In order to make the migration idempotent, we must check whether the untyped version of the55 // class is already present. If present, immediately continue.56 continue;57 }58 rewrite(imp.getStart(), imp.getWidth(), untypedClass);59 }60}61function getImports(sourceFile: ts.SourceFile): ts.ImportSpecifier[] {62 let imports: ts.ImportSpecifier[] = [];63 for (const cc of classes) {64 const specifier = getImportSpecifier(sourceFile, forms, cc);65 if (!specifier) continue;66 imports.push(specifier);67 }68 return imports;69}70function getUntypedVersionOfImportOrName(name: string): string|null {71 for (const cc of classes) {72 if (name.includes(cc)) {73 return `${untypedPrefix}${cc}`;74 }75 }76 return null;77}78function getUsages(79 sourceFile: ts.SourceFile, typeChecker: ts.TypeChecker,80 importSpecifier: ts.ImportSpecifier): MigratableNode[] {81 const usages: MigratableNode[] = [];82 const visitNode = (node: ts.Node) => {83 if (ts.isImportSpecifier(node)) {84 // Skip this node and all of its children; imports are a special case.85 return;86 }87 if (ts.isIdentifier(node) && isUsageOfFormsImport(typeChecker, node, importSpecifier)) {88 usages.push({node, importName: importSpecifier.getText()});89 }90 ts.forEachChild(node, visitNode);91 };92 ts.forEachChild(sourceFile, visitNode);93 return usages;94}95function isUsageOfFormsImport(96 typeChecker: ts.TypeChecker, node: ts.Identifier,97 importSpecifier: ts.ImportSpecifier): boolean {98 const symbol = typeChecker.getSymbolAtLocation(node);99 // We check symbol.declarations because we actually care about the name at the declaration site,100 // not the usage site. These could be different in the case of overriden constructors.101 if (!symbol || symbol.declarations === undefined || !symbol.declarations.length) return false;102 const decl = symbol.declarations[0];103 if (!ts.isImportSpecifier(decl)) return false;104 // As per `typescript/imports.ts`, we must walk up the tree to find the enclosing import105 // declaration. For reasons specific to the TS AST, this is always 3 levels up from an import106 // specifier node.107 const importDecl = decl.parent.parent.parent;108 if (!ts.isStringLiteral(importDecl.moduleSpecifier)) return false;109 const importName = typeChecker.getTypeAtLocation(importSpecifier)?.getSymbol()?.getName();110 if (!importName) return false;111 // Handles aliased imports: e.g. "import {Component as myComp} from ...";112 const declName = decl.propertyName ? decl.propertyName.text : decl.name.text;113 if (importName === declName) return true;114 // In the case of FormControl's overridden exported constructor, the value name and declaration115 // name are not exactly the same. For our purposes, it's enough to check whether the latter is a116 // substring of the former.117 if (declName === formControl && importName.includes(declName)) return true;118 return false;...

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symbol.ts

Source:symbol.ts Github

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1/**2 * @license3 * Copyright Google LLC All Rights Reserved.4 *5 * Use of this source code is governed by an MIT-style license that can be6 * found in the LICENSE file at https://angular.io/license7 */8import ts from 'typescript';9export function getValueSymbolOfDeclaration(node: ts.Node, typeChecker: ts.TypeChecker): ts.Symbol|10 undefined {11 let symbol = typeChecker.getSymbolAtLocation(node);12 while (symbol && symbol.flags & ts.SymbolFlags.Alias) {13 symbol = typeChecker.getAliasedSymbol(symbol);14 }15 return symbol;16}17/** Checks whether a node is referring to a specific import specifier. */18export function isReferenceToImport(19 typeChecker: ts.TypeChecker, node: ts.Node, importSpecifier: ts.ImportSpecifier): boolean {20 const nodeSymbol = typeChecker.getTypeAtLocation(node).getSymbol();21 const importSymbol = typeChecker.getTypeAtLocation(importSpecifier).getSymbol();22 return !!(nodeSymbol?.declarations?.[0] && importSymbol?.declarations?.[0]) &&23 nodeSymbol.declarations[0] === importSymbol.declarations[0];24}25/** Checks whether a node's type is nullable (`null`, `undefined` or `void`). */26export function isNullableType(typeChecker: ts.TypeChecker, node: ts.Node) {27 // Skip expressions in the form of `foo.bar!.baz` since the `TypeChecker` seems28 // to identify them as null, even though the user indicated that it won't be.29 if (node.parent && ts.isNonNullExpression(node.parent)) {30 return false;31 }32 const type = typeChecker.getTypeAtLocation(node);33 const typeNode = typeChecker.typeToTypeNode(type, undefined, ts.NodeBuilderFlags.None);34 let hasSeenNullableType = false;35 // Trace the type of the node back to a type node, walk36 // through all of its sub-nodes and look for nullable tyes.37 if (typeNode) {38 (function walk(current: ts.Node) {39 if (current.kind === ts.SyntaxKind.NullKeyword ||40 current.kind === ts.SyntaxKind.UndefinedKeyword ||41 current.kind === ts.SyntaxKind.VoidKeyword) {42 hasSeenNullableType = true;43 // Note that we don't descend into type literals, because it may cause44 // us to mis-identify the root type as nullable, because it has a nullable45 // property (e.g. `{ foo: string | null }`).46 } else if (!hasSeenNullableType && !ts.isTypeLiteralNode(current)) {47 current.forEachChild(walk);48 }49 })(typeNode);50 }51 return hasSeenNullableType;52}53/**54 * Walks through the types and sub-types of a node, looking for a55 * type that has the same name as one of the passed-in ones.56 */57export function hasOneOfTypes(58 typeChecker: ts.TypeChecker, node: ts.Node, types: string[]): boolean {59 const type = typeChecker.getTypeAtLocation(node);60 const typeNode =61 type ? typeChecker.typeToTypeNode(type, undefined, ts.NodeBuilderFlags.None) : undefined;62 let hasMatch = false;63 if (typeNode) {64 (function walk(current: ts.Node) {65 if (ts.isIdentifier(current) && types.includes(current.text)) {66 hasMatch = true;67 } else if (!hasMatch && !ts.isTypeLiteralNode(current)) {68 current.forEachChild(walk);69 }70 })(typeNode);71 }72 return hasMatch;...

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wrapped-symbol.ts

Source:wrapped-symbol.ts Github

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1import ts from "typescript";2export class WrappedSymbol {3 typeChecker: ts.TypeChecker;4 symbol: ts.Symbol;5 constructor(typeChecker: ts.TypeChecker, symbol: ts.Symbol) {6 this.typeChecker = typeChecker;7 this.symbol = symbol;8 }9 public get isFunctionDeclaration(): boolean {10 if (this.symbol.valueDeclaration) {11 return ts.isFunctionDeclaration(this.symbol.valueDeclaration);12 }13 return false;14 }15 public get isModuleDeclaration(): boolean {16 if (this.symbol.valueDeclaration) {17 return ts.isModuleDeclaration(this.symbol.valueDeclaration);18 }19 return false;20 }21 public get exports(): WrappedSymbol[] {22 const exports: WrappedSymbol[] = [];23 if (this.symbol.exports) {24 this.symbol.exports.forEach((sym, _) => {25 exports.push(26 new WrappedSymbol(this.typeChecker, sym).aliasedSymbolIfNecessary27 );28 });29 }30 return exports;31 }32 public get aliasedSymbolIfNecessary(): WrappedSymbol {33 if ((this.symbol.flags & ts.SymbolFlags.Alias) !== 0) {34 const newSymbol: ts.Symbol = this.typeChecker.getAliasedSymbol(35 this.symbol36 );37 return new WrappedSymbol(this.typeChecker, newSymbol);38 }39 return this;40 }41 public get comment(): string {42 return ts.displayPartsToString(43 this.symbol.getDocumentationComment(this.typeChecker)44 );45 }46 public get name(): string {47 return this.symbol.getName();48 }49}50// interface DocEntry {51// name?: string;52// fileName?: string;53// documentation?: string;54// type?: string;55// constructors?: DocEntry[];56// parameters?: DocEntry[];57// returnType?: string;...

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Using AI Code Generation

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1import { typeChecker } from 'ts-auto-mock';2import { typeChecker } from 'ts-auto-mock';3import { typeChecker } from 'ts-auto-mock';4import { typeChecker } from 'ts-auto-mock';5import { typeChecker } from 'ts-auto-mock';6import { typeChecker } from 'ts-auto-mock';7import { typeChecker } from 'ts-auto-mock';8import { typeChecker } from 'ts-auto-mock';9import { typeChecker } from 'ts-auto-mock';10import { typeChecker } from 'ts-auto-mock';11import { typeChecker } from 'ts-auto-mock';12import { typeChecker } from 'ts-auto-mock';13import { typeChecker } from 'ts-auto-mock';14import { typeChecker } from 'ts-auto-mock';15import { typeChecker } from 'ts-auto-mock';16import { typeChecker } from 'ts-auto

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Using AI Code Generation

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1import { typeChecker } from 'ts-auto-mock';2import { mock } from 'ts-mock-imports';3import * as jest from 'jest';4const testMock = mock('./test');5jest.mock('./test');6const testMock = typeChecker('./test');7testMock.mock('testFunction', () => {8 return 'test';9});10jest.mock('./test', () => {11 return {12 testFunction: () => {13 return 'test';14 }15 };16});17const testMock = typeChecker('./test');18testMock.mock('testFunction', () => {19 return 'test';20});21testMock.restoreAll();22jest.restoreAllMocks();23const testMock = typeChecker('./test');24testMock.restoreAll();25testMock.restore('testFunction');26jest.restoreAllMocks();27const testMock = typeChecker('./test');28testMock.restore('testFunction');29const testFunction = testMock.imported.testFunction;30const testFunction = require('./test').testFunction;31const testFunction = typeChecker('./test').imported.testFunction;32const testFunction = testMock.mocked.testFunction;33const testFunction = jest.fn();34const testFunction = jest.fn();35const testFunction = testMock.mocked.testFunction;36const testFunction = jest.fn();37const testFunction = jest.fn();38const testFunction = testMock.imported.testFunction;39const testFunction = require('./test').testFunction;

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Using AI Code Generation

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1import {typeChecker} from 'ts-auto-mock';2const type = typeChecker('name of the type');3import {typeChecker} from 'ts-auto-mock';4const type = typeChecker('name of the type');5import {typeChecker} from 'ts-auto-mock';6const type = typeChecker('name of the type');7import {typeChecker} from 'ts-auto-mock';8const type = typeChecker('name of the type');9import {typeChecker} from 'ts-auto-mock';10const type = typeChecker('name of the type');11import {typeChecker} from 'ts-auto-mock';12const type = typeChecker('name of the type');13import {typeChecker} from 'ts-auto-mock';14const type = typeChecker('name of the type');15import {typeChecker} from 'ts-auto-mock';16const type = typeChecker('name of the type');17import {typeChecker} from 'ts-auto-mock';18const type = typeChecker('name of the type');19import {typeChecker} from 'ts-auto-mock';20const type = typeChecker('name of the type');

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Using AI Code Generation

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1import { typeChecker } from 'ts-auto-mock';2import { createMock } from 'ts-auto-mock/extension';3const mock = createMock<SomeInterface>();4import { typeChecker } from 'ts-auto-mock';5import { createMock } from 'ts-auto-mock/extension';6const mock = createMock<SomeInterface>();7import { typeChecker } from 'ts-auto-mock';8import { createMock } from 'ts-auto-mock/extension';9const mock = createMock<SomeInterface>();10import { typeChecker } from 'ts-auto-mock';11import { createMock } from 'ts-auto-mock/extension';12const mock = createMock<SomeInterface>();13import { typeChecker } from 'ts-auto-mock';14import { createMock } from 'ts-auto-mock/extension';15const mock = createMock<SomeInterface>();16import { typeChecker } from 'ts-auto-mock';17import { createMock } from 'ts-auto-mock/extension';18const mock = createMock<SomeInterface>();19import { typeChecker } from 'ts-auto-mock';20import { createMock } from 'ts-auto-mock/extension';21const mock = createMock<SomeInterface>();

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