59 lines
1.9 KiB
TypeScript
59 lines
1.9 KiB
TypeScript
/**
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* @license
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* Copyright Google Inc. All Rights Reserved.
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*
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* Use of this source code is governed by an MIT-style license that can be
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* found in the LICENSE file at https://angular.io/license
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*/
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import {relative} from 'path';
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import {ReferenceChain} from './analyzer';
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import {convertPathToForwardSlash} from './file_system';
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export type CircularDependency = ReferenceChain<string>;
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export type Golden = CircularDependency[];
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/**
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* Converts a list of reference chains to a JSON-compatible golden object. Reference chains
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* by default use TypeScript source file objects. In order to make those chains printable,
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* the source file objects are mapped to their relative file names.
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*/
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export function convertReferenceChainToGolden(refs: ReferenceChain[], baseDir: string): Golden {
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return refs.map(
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chain => chain.map(({fileName}) => convertPathToForwardSlash(relative(baseDir, fileName))));
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}
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/**
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* Compares the specified goldens and returns two lists that describe newly
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* added circular dependencies, or fixed circular dependencies.
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*/
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export function compareGoldens(actual: Golden, expected: Golden) {
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const newCircularDeps: CircularDependency[] = [];
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const fixedCircularDeps: CircularDependency[] = [];
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actual.forEach(a => {
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if (!expected.find(e => isSameCircularDependency(a, e))) {
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newCircularDeps.push(a);
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}
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});
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expected.forEach(e => {
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if (!actual.find(a => isSameCircularDependency(e, a))) {
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fixedCircularDeps.push(e);
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}
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});
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return {newCircularDeps, fixedCircularDeps};
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}
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/** Checks whether the specified circular dependencies are equal. */
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function isSameCircularDependency(actual: CircularDependency, expected: CircularDependency) {
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if (actual.length !== expected.length) {
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return false;
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}
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for (let i = 0; i < actual.length; i++) {
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if (actual[i] !== expected[i]) {
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return false;
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}
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}
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return true;
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}
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