angular-cn/packages/compiler-cli/ngcc/test/dependencies/commonjs_dependency_host_sp...

240 lines
12 KiB
TypeScript

/**
* @license
* Copyright Google Inc. 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 {absoluteFrom, getFileSystem, relativeFrom} from '../../../src/ngtsc/file_system';
import {runInEachFileSystem} from '../../../src/ngtsc/file_system/testing';
import {loadTestFiles} from '../../../test/helpers';
import {CommonJsDependencyHost} from '../../src/dependencies/commonjs_dependency_host';
import {createDependencyInfo} from '../../src/dependencies/dependency_host';
import {ModuleResolver} from '../../src/dependencies/module_resolver';
runInEachFileSystem(() => {
describe('CommonJsDependencyHost', () => {
let _: typeof absoluteFrom;
let host: CommonJsDependencyHost;
beforeEach(() => {
_ = absoluteFrom;
loadTestFiles([
{
name: _('/no/imports/or/re-exports/index.js'),
contents: '// some text but no import-like statements'
},
{name: _('/no/imports/or/re-exports/package.json'), contents: '{"main": "./index.js"}'},
{name: _('/no/imports/or/re-exports/index.metadata.json'), contents: 'MOCK METADATA'},
{name: _('/external/imports/index.js'), contents: commonJs(['lib_1', 'lib_1/sub_1'])},
{name: _('/external/imports/package.json'), contents: '{"main": "./index.js"}'},
{name: _('/external/imports/index.metadata.json'), contents: 'MOCK METADATA'},
{
name: _('/external/re-exports/index.js'),
contents: commonJs(['lib_1', 'lib_1/sub_1'], ['lib_1.X', 'lib_1sub_1.Y'])
},
{name: _('/external/re-exports/package.json'), contents: '{"main": "./index.js"}'},
{name: _('/external/re-exports/index.metadata.json'), contents: 'MOCK METADATA'},
{name: _('/external/imports-missing/index.js'), contents: commonJs(['lib_1', 'missing'])},
{name: _('/external/imports-missing/package.json'), contents: '{"main": "./index.js"}'},
{name: _('/external/imports-missing/index.metadata.json'), contents: 'MOCK METADATA'},
{name: _('/external/deep-import/index.js'), contents: commonJs(['lib_1/deep/import'])},
{name: _('/external/deep-import/package.json'), contents: '{"main": "./index.js"}'},
{name: _('/external/deep-import/index.metadata.json'), contents: 'MOCK METADATA'},
{name: _('/internal/outer/index.js'), contents: commonJs(['../inner'])},
{name: _('/internal/outer/package.json'), contents: '{"main": "./index.js"}'},
{name: _('/internal/outer/index.metadata.json'), contents: 'MOCK METADATA'},
{name: _('/internal/inner/index.js'), contents: commonJs(['lib_1/sub_1'], ['X'])},
{
name: _('/internal/circular_a/index.js'),
contents: commonJs(['../circular_b', 'lib_1/sub_1'], ['Y'])
},
{
name: _('/internal/circular_b/index.js'),
contents: commonJs(['../circular_a', 'lib_1'], ['X'])
},
{name: _('/internal/circular_a/package.json'), contents: '{"main": "./index.js"}'},
{name: _('/internal/circular_a/index.metadata.json'), contents: 'MOCK METADATA'},
{name: _('/re-directed/index.js'), contents: commonJs(['lib_1/sub_2'])},
{name: _('/re-directed/package.json'), contents: '{"main": "./index.js"}'},
{name: _('/re-directed/index.metadata.json'), contents: 'MOCK METADATA'},
{
name: _('/path-alias/index.js'),
contents: commonJs(['@app/components', '@app/shared', '@lib/shared/test', 'lib_1'])
},
{name: _('/path-alias/package.json'), contents: '{"main": "./index.js"}'},
{name: _('/path-alias/index.metadata.json'), contents: 'MOCK METADATA'},
{name: _('/node_modules/lib_1/index.d.ts'), contents: 'export declare class X {}'},
{
name: _('/node_modules/lib_1/package.json'),
contents: '{"esm2015": "./index.js", "typings": "./index.d.ts"}'
},
{name: _('/node_modules/lib_1/index.metadata.json'), contents: 'MOCK METADATA'},
{
name: _('/node_modules/lib_1/deep/import/index.js'),
contents: 'export class DeepImport {}'
},
{name: _('/node_modules/lib_1/sub_1/index.d.ts'), contents: 'export declare class Y {}'},
{
name: _('/node_modules/lib_1/sub_1/package.json'),
contents: '{"esm2015": "./index.js", "typings": "./index.d.ts"}'
},
{name: _('/node_modules/lib_1/sub_1/index.metadata.json'), contents: 'MOCK METADATA'},
{name: _('/node_modules/lib_1/sub_2.d.ts'), contents: `export * from './sub_2/sub_2';`},
{name: _('/node_modules/lib_1/sub_2/sub_2.d.ts'), contents: `export declare class Z {}';`},
{
name: _('/node_modules/lib_1/sub_2/package.json'),
contents: '{"esm2015": "./sub_2.js", "typings": "./sub_2.d.ts"}'
},
{name: _('/node_modules/lib_1/sub_2/sub_2.metadata.json'), contents: 'MOCK METADATA'},
{name: _('/dist/components/index.d.ts'), contents: `export declare class MyComponent {};`},
{
name: _('/dist/components/package.json'),
contents: '{"esm2015": "./index.js", "typings": "./index.d.ts"}'
},
{name: _('/dist/components/index.metadata.json'), contents: 'MOCK METADATA'},
{
name: _('/dist/shared/index.d.ts'),
contents: `import {X} from 'lib_1';\nexport declare class Service {}`
},
{
name: _('/dist/shared/package.json'),
contents: '{"esm2015": "./index.js", "typings": "./index.d.ts"}'
},
{name: _('/dist/shared/index.metadata.json'), contents: 'MOCK METADATA'},
{name: _('/dist/lib/shared/test/index.d.ts'), contents: `export class TestHelper {}`},
{
name: _('/dist/lib/shared/test/package.json'),
contents: '{"esm2015": "./index.js", "typings": "./index.d.ts"}'
},
{name: _('/dist/lib/shared/test/index.metadata.json'), contents: 'MOCK METADATA'},
]);
const fs = getFileSystem();
host = new CommonJsDependencyHost(fs, new ModuleResolver(fs));
});
describe('collectDependencies()', () => {
it('should not generate a TS AST if the source does not contain any require calls', () => {
spyOn(ts, 'createSourceFile');
host.collectDependencies(_('/no/imports/or/re-exports/index.js'), createDependencyInfo());
expect(ts.createSourceFile).not.toHaveBeenCalled();
});
it('should resolve all the external imports of the source file', () => {
const {dependencies, missing, deepImports} = createDependencyInfo();
host.collectDependencies(
_('/external/imports/index.js'), {dependencies, missing, deepImports});
expect(dependencies.size).toBe(2);
expect(missing.size).toBe(0);
expect(deepImports.size).toBe(0);
expect(dependencies.has(_('/node_modules/lib_1'))).toBe(true);
expect(dependencies.has(_('/node_modules/lib_1/sub_1'))).toBe(true);
});
it('should resolve all the external re-exports of the source file', () => {
const {dependencies, missing, deepImports} = createDependencyInfo();
host.collectDependencies(
_('/external/re-exports/index.js'), {dependencies, missing, deepImports});
expect(dependencies.size).toBe(2);
expect(missing.size).toBe(0);
expect(deepImports.size).toBe(0);
expect(dependencies.has(_('/node_modules/lib_1'))).toBe(true);
expect(dependencies.has(_('/node_modules/lib_1/sub_1'))).toBe(true);
});
it('should capture missing external imports', () => {
const {dependencies, missing, deepImports} = createDependencyInfo();
host.collectDependencies(
_('/external/imports-missing/index.js'), {dependencies, missing, deepImports});
expect(dependencies.size).toBe(1);
expect(dependencies.has(_('/node_modules/lib_1'))).toBe(true);
expect(missing.size).toBe(1);
expect(missing.has(relativeFrom('missing'))).toBe(true);
expect(deepImports.size).toBe(0);
});
it('should not register deep imports as missing', () => {
// This scenario verifies the behavior of the dependency analysis when an external import
// is found that does not map to an entry-point but still exists on disk, i.e. a deep
// import. Such deep imports are captured for diagnostics purposes.
const {dependencies, missing, deepImports} = createDependencyInfo();
host.collectDependencies(
_('/external/deep-import/index.js'), {dependencies, missing, deepImports});
expect(dependencies.size).toBe(0);
expect(missing.size).toBe(0);
expect(deepImports.size).toBe(1);
expect(deepImports.has(_('/node_modules/lib_1/deep/import'))).toBe(true);
});
it('should recurse into internal dependencies', () => {
const {dependencies, missing, deepImports} = createDependencyInfo();
host.collectDependencies(
_('/internal/outer/index.js'), {dependencies, missing, deepImports});
expect(dependencies.size).toBe(1);
expect(dependencies.has(_('/node_modules/lib_1/sub_1'))).toBe(true);
expect(missing.size).toBe(0);
expect(deepImports.size).toBe(0);
});
it('should handle circular internal dependencies', () => {
const {dependencies, missing, deepImports} = createDependencyInfo();
host.collectDependencies(
_('/internal/circular_a/index.js'), {dependencies, missing, deepImports});
expect(dependencies.size).toBe(2);
expect(dependencies.has(_('/node_modules/lib_1'))).toBe(true);
expect(dependencies.has(_('/node_modules/lib_1/sub_1'))).toBe(true);
expect(missing.size).toBe(0);
expect(deepImports.size).toBe(0);
});
it('should support `paths` alias mappings when resolving modules', () => {
const fs = getFileSystem();
host = new CommonJsDependencyHost(fs, new ModuleResolver(fs, {
baseUrl: '/dist',
paths: {
'@app/*': ['*'],
'@lib/*/test': ['lib/*/test'],
}
}));
const {dependencies, missing, deepImports} = createDependencyInfo();
host.collectDependencies(_('/path-alias/index.js'), {dependencies, missing, deepImports});
expect(dependencies.size).toBe(4);
expect(dependencies.has(_('/dist/components'))).toBe(true);
expect(dependencies.has(_('/dist/shared'))).toBe(true);
expect(dependencies.has(_('/dist/lib/shared/test'))).toBe(true);
expect(dependencies.has(_('/node_modules/lib_1'))).toBe(true);
expect(missing.size).toBe(0);
expect(deepImports.size).toBe(0);
});
it('should handle entry-point paths with no extension', () => {
const {dependencies, missing, deepImports} = createDependencyInfo();
host.collectDependencies(
_('/external/imports/index'), {dependencies, missing, deepImports});
expect(dependencies.size).toBe(2);
expect(missing.size).toBe(0);
expect(deepImports.size).toBe(0);
expect(dependencies.has(_('/node_modules/lib_1'))).toBe(true);
expect(dependencies.has(_('/node_modules/lib_1/sub_1'))).toBe(true);
});
});
});
function commonJs(importPaths: string[], exportNames: string[] = []) {
const commonJsRequires =
importPaths
.map(
p =>
`var ${p.replace('@angular/', '').replace(/\.?\.?\//g, '').replace(/@/,'')} = require('${p}');`)
.join('\n');
const exportStatements =
exportNames.map(e => ` exports.${e.replace(/.+\./, '')} = ${e};`).join('\n');
return `${commonJsRequires}
${exportStatements}`;
}
});