VLEX/BPM-UI/node_modules/@angular/cdk/schematics/update-tool/utils/imports.js

"use strict";
/**
 * @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 });
const ts = require("typescript");
/** Gets import information about the specified identifier by using the type checker. */
function getImportOfIdentifier(typeChecker, node) {
    const symbol = typeChecker.getSymbolAtLocation(node);
    if (!symbol || !symbol.declarations.length) {
        return null;
    }
    const decl = symbol.declarations[0];
    if (!ts.isImportSpecifier(decl)) {
        return null;
    }
    // Since "decl" is an import specifier, we can walk up three times to get a reference
    // to the import declaration node (NamedImports -> ImportClause -> ImportDeclaration).
    const importDecl = decl.parent.parent.parent;
    if (!ts.isStringLiteral(importDecl.moduleSpecifier)) {
        return null;
    }
    return {
        // Handles aliased imports: e.g. "import {Component as myComp} from ...";
        name: decl.propertyName ? decl.propertyName.text : decl.name.text,
        importModule: importDecl.moduleSpecifier.text,
        node: importDecl
    };
}
exports.getImportOfIdentifier = getImportOfIdentifier;
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