@angular/core
Version:
Angular - the core framework
64 lines • 8.84 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/abstract-control-parent/util", ["require", "exports", "path", "typescript", "@angular/core/schematics/utils/typescript/nodes", "@angular/core/schematics/utils/typescript/symbol"], factory);
}
})(function (require, exports) {
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.findParentAccesses = void 0;
const path_1 = require("path");
const ts = require("typescript");
const nodes_1 = require("@angular/core/schematics/utils/typescript/nodes");
const symbol_1 = require("@angular/core/schematics/utils/typescript/symbol");
/** Names of symbols from `@angular/forms` whose `parent` accesses have to be migrated. */
const abstractControlSymbols = ['AbstractControl', 'FormArray', 'FormControl', 'FormGroup'];
/**
* Finds the `PropertyAccessExpression`-s that are accessing the `parent` property in
* such a way that may result in a compilation error after the v11 type changes.
*/
function findParentAccesses(typeChecker, sourceFile) {
const results = [];
sourceFile.forEachChild(function walk(node) {
if (ts.isPropertyAccessExpression(node) && node.name.text === 'parent' && !nodes_1.isNullCheck(node) &&
!nodes_1.isSafeAccess(node) && results.indexOf(node) === -1 &&
isAbstractControlReference(typeChecker, node) && symbol_1.isNullableType(typeChecker, node)) {
results.unshift(node);
}
node.forEachChild(walk);
});
return results;
}
exports.findParentAccesses = findParentAccesses;
/** Checks whether a property access is on an `AbstractControl` coming from `@angular/forms`. */
function isAbstractControlReference(typeChecker, node) {
var _a, _b;
let current = node;
const formsPattern = /node_modules\/?.*\/@angular\/forms/;
// Walks up the property access chain and tries to find a symbol tied to a `SourceFile`.
// If such a node is found, we check whether the type is one of the `AbstractControl` symbols
// and whether it comes from the `@angular/forms` directory in the `node_modules`.
while (ts.isPropertyAccessExpression(current)) {
const symbol = (_a = typeChecker.getTypeAtLocation(current.expression)) === null || _a === void 0 ? void 0 : _a.getSymbol();
if (symbol) {
const sourceFile = (_b = symbol.valueDeclaration) === null || _b === void 0 ? void 0 : _b.getSourceFile();
return sourceFile != null &&
formsPattern.test(path_1.normalize(sourceFile.fileName).replace(/\\/g, '/')) &&
symbol_1.hasOneOfTypes(typeChecker, current.expression, abstractControlSymbols);
}
current = current.expression;
}
return false;
}
});
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