@angular/core
Version:
Angular - the core framework
74 lines • 8.61 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
*/
(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/move-document/document_import_visitor", ["require", "exports", "typescript"], factory);
}
})(function (require, exports) {
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.DocumentImportVisitor = exports.DOCUMENT_TOKEN_NAME = exports.PLATFORM_BROWSER_IMPORT = exports.COMMON_IMPORT = void 0;
const ts = require("typescript");
exports.COMMON_IMPORT = '@angular/common';
exports.PLATFORM_BROWSER_IMPORT = '@angular/platform-browser';
exports.DOCUMENT_TOKEN_NAME = 'DOCUMENT';
/** Visitor that can be used to find a set of imports in a TypeScript file. */
class DocumentImportVisitor {
constructor(typeChecker) {
this.typeChecker = typeChecker;
this.importsMap = new Map();
}
visitNode(node) {
if (ts.isNamedImports(node)) {
this.visitNamedImport(node);
}
ts.forEachChild(node, node => this.visitNode(node));
}
visitNamedImport(node) {
if (!node.elements || !node.elements.length) {
return;
}
const importDeclaration = node.parent.parent;
// If this is not a StringLiteral it will be a grammar error
const moduleSpecifier = importDeclaration.moduleSpecifier;
const sourceFile = node.getSourceFile();
let imports = this.importsMap.get(sourceFile);
if (!imports) {
imports = {
platformBrowserImport: null,
commonImport: null,
documentElement: null,
};
}
if (moduleSpecifier.text === exports.PLATFORM_BROWSER_IMPORT) {
const documentElement = this.getDocumentElement(node);
if (documentElement) {
imports.platformBrowserImport = node;
imports.documentElement = documentElement;
}
}
else if (moduleSpecifier.text === exports.COMMON_IMPORT) {
imports.commonImport = node;
}
else {
return;
}
this.importsMap.set(sourceFile, imports);
}
getDocumentElement(node) {
const elements = node.elements;
return elements.find(el => (el.propertyName || el.name).escapedText === exports.DOCUMENT_TOKEN_NAME);
}
}
exports.DocumentImportVisitor = DocumentImportVisitor;
});
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