35 lines
1.2 KiB
TypeScript
35 lines
1.2 KiB
TypeScript
/**
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* @license
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* Copyright Google LLC 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 * as ts from 'typescript';
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export function aliasTransformFactory(exportStatements: Map<string, Map<string, [string, string]>>):
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ts.TransformerFactory<ts.SourceFile> {
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return (context: ts.TransformationContext) => {
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return (file: ts.SourceFile) => {
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if (ts.isBundle(file) || !exportStatements.has(file.fileName)) {
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return file;
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}
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const statements = [...file.statements];
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exportStatements.get(file.fileName)!.forEach(([moduleName, symbolName], aliasName) => {
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const stmt = ts.createExportDeclaration(
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/* decorators */ undefined,
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/* modifiers */ undefined,
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/* exportClause */ ts.createNamedExports([ts.createExportSpecifier(
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/* propertyName */ symbolName,
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/* name */ aliasName)]),
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/* moduleSpecifier */ ts.createStringLiteral(moduleName));
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statements.push(stmt);
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});
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return ts.updateSourceFileNode(file, statements);
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};
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};
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}
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