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feat(ngcc): enable private NgModule re-exports in ngcc on request (#33177)

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This commit adapts the private NgModule re-export system (using aliasing) to
ngcc. Not all ngcc compilations are compatible with these re-exports, as
they assume a 1:1 correspondence between .js and .d.ts files. The primary
concern here is supporting them for commonjs-only packages.

PR Close #33177
This commit is contained in:
Alex Rickabaugh
2019-10-14 13:04:42 -07:00
committed by Matias Niemelä
parent c4733c15c0
commit e030375d9a
17 changed files with 287 additions and 11 deletions
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17
packages/compiler-cli/ngcc/src/rendering/esm_rendering_formatter.ts
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@ -16,6 +16,7 @@ import {ModuleWithProvidersInfo} from '../analysis/module_with_providers_analyze
import {ExportInfo} from '../analysis/private_declarations_analyzer';
import {RenderingFormatter, RedundantDecoratorMap} from './rendering_formatter';
import {stripExtension} from './utils';
import {Reexport} from '../../../src/ngtsc/imports';
/**
* A RenderingFormatter that works with ECMAScript Module import and export statements.
@ -57,6 +58,22 @@ export class EsmRenderingFormatter implements RenderingFormatter {
});
}
/**
* Add plain exports to the end of the file.
*
* Unlike `addExports`, direct exports go directly in a .js and .d.ts file and don't get added to
* an entrypoint.
*/
addDirectExports(
output: MagicString, exports: Reexport[], importManager: ImportManager,
file: ts.SourceFile): void {
for (const e of exports) {
const exportStatement = `\nexport {${e.symbolName} as ${e.asAlias}} from '${e.fromModule}';`;
output.append(exportStatement);
}
}
/**
* Add the constants directly after the imports.
*/