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

32 lines
1.2 KiB
TypeScript

/**
* @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
*/
import * as ts from 'typescript';
import {getImportOfIdentifier} from '../../utils/typescript/imports';
/** Add a generic type to a type reference. */
export function createModuleWithProvidersType(
type: string, node?: ts.TypeReferenceNode): ts.TypeReferenceNode {
const typeNode = node || ts.createTypeReferenceNode('ModuleWithProviders', []);
const typeReferenceNode = ts.createTypeReferenceNode(ts.createIdentifier(type), []);
return ts.updateTypeReferenceNode(
typeNode, typeNode.typeName, ts.createNodeArray([typeReferenceNode]));
}
/** Determine whether a node is a ModuleWithProviders type reference node without a generic type */
export function isModuleWithProvidersNotGeneric(
typeChecker: ts.TypeChecker, node: ts.Node): node is ts.TypeReferenceNode {
if (!ts.isTypeReferenceNode(node) || !ts.isIdentifier(node.typeName)) {
return false;
}
const imp = getImportOfIdentifier(typeChecker, node.typeName);
return !!imp && imp.name === 'ModuleWithProviders' && imp.importModule === '@angular/core' &&
!node.typeArguments;
}