fix(ngcc): fix compilation of ChangeDetectorRef
in pipe constructors (#38892)
In #38666 we changed how ngcc deals with type expressions, where it would now always emit the original type expression into the generated code as a "local" type value reference instead of synthesizing new imports using an "imported" type value reference. This was done as a fix to properly deal with renamed symbols, however it turns out that the compiler has special handling for certain imported symbols, e.g. `ChangeDetectorRef` from `@angular/core`. The "local" type value reference prevented this special logic from being hit, resulting in incorrect compilation of pipe factories. This commit fixes the issue by manually inspecting the import of the type expression, in order to return an "imported" type value reference. By manually inspecting the import we continue to handle renamed symbols. Fixes #38883 PR Close #38892
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@ -576,6 +576,35 @@ runInEachFileSystem(() => {
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`TestClass.ɵprov = ɵngcc0.ɵɵdefineInjectable({`);
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});
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// https://github.com/angular/angular/issues/38883
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it('should recognize ChangeDetectorRef as special symbol for pipes', () => {
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compileIntoFlatEs2015Package('test-package', {
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'/index.ts': `
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import {ChangeDetectorRef, Pipe, PipeTransform} from '@angular/core';
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@Pipe({
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name: 'myTestPipe'
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})
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export class TestClass implements PipeTransform {
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constructor(cdr: ChangeDetectorRef) {}
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transform(value: any) { return value; }
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}
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`,
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});
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mainNgcc({
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basePath: '/node_modules',
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targetEntryPointPath: 'test-package',
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propertiesToConsider: ['esm2015'],
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});
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const jsContents = fs.readFile(_(`/node_modules/test-package/index.js`));
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expect(jsContents)
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.toContain(
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`TestClass.ɵfac = function TestClass_Factory(t) { ` +
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`return new (t || TestClass)(ɵngcc0.ɵɵinjectPipeChangeDetectorRef()); };`);
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});
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it('should use the correct type name in typings files when an export has a different name in source files',
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() => {
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// We need to make sure that changes to the typings files use the correct name
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@ -99,7 +99,14 @@ function compileIntoFlatPackage(
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program.emit();
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};
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emit({declaration: true, module: options.module, target: options.target, lib: []});
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emit({
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declaration: true,
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emitDecoratorMetadata: true,
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moduleResolution: ts.ModuleResolutionKind.NodeJs,
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module: options.module,
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target: options.target,
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lib: [],
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});
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// Copy over the JS and .d.ts files, and add a .metadata.json for each .d.ts file.
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for (const file of rootNames) {
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@ -152,7 +159,9 @@ export function compileIntoApf(
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compileFs.ensureDir(compileFs.resolve('esm2015'));
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emit({
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declaration: true,
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emitDecoratorMetadata: true,
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outDir: './esm2015',
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moduleResolution: ts.ModuleResolutionKind.NodeJs,
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module: ts.ModuleKind.ESNext,
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target: ts.ScriptTarget.ES2015,
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lib: [],
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@ -178,7 +187,9 @@ export function compileIntoApf(
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compileFs.ensureDir(compileFs.resolve('esm5'));
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emit({
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declaration: false,
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emitDecoratorMetadata: true,
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outDir: './esm5',
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moduleResolution: ts.ModuleResolutionKind.NodeJs,
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module: ts.ModuleKind.ESNext,
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target: ts.ScriptTarget.ES5,
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lib: [],
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