72 lines
2.7 KiB
TypeScript
72 lines
2.7 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 {ParseLocation, ParseSourceFile} from '@angular/compiler';
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import {StaticSymbol} from '@angular/compiler/src/aot/static_symbol';
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import * as o from '@angular/compiler/src/output/output_ast';
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import {ImportResolver} from '@angular/compiler/src/output/path_util';
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import {SourceMap} from '@angular/compiler/src/output/source_map';
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import {TypeScriptEmitter} from '@angular/compiler/src/output/ts_emitter';
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import {ParseSourceSpan} from '@angular/compiler/src/parse_util';
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import {extractSourceMap, originalPositionFor} from './source_map_util';
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const someGenFilePath = 'somePackage/someGenFile';
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const someSourceFilePath = 'somePackage/someSourceFile';
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class SimpleJsImportGenerator implements ImportResolver {
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fileNameToModuleName(importedUrlStr: string, moduleUrlStr: string): string {
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return importedUrlStr;
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}
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getImportAs(symbol: StaticSymbol): StaticSymbol|null { return null; }
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getTypeArity(symbol: StaticSymbol): number|null { return null; }
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}
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export function main() {
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// Not supported features of our OutputAst in TS:
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// - real `const` like in Dart
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// - final fields
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describe('TypeScriptEmitter', () => {
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let importResolver: ImportResolver;
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let emitter: TypeScriptEmitter;
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let someVar: o.ReadVarExpr;
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beforeEach(() => {
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importResolver = new SimpleJsImportGenerator();
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emitter = new TypeScriptEmitter(importResolver);
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someVar = o.variable('someVar');
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});
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function emitSourceMap(
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stmt: o.Statement | o.Statement[], exportedVars: string[] | null = null,
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preamble?: string): SourceMap {
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const stmts = Array.isArray(stmt) ? stmt : [stmt];
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const source = emitter.emitStatements(
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someSourceFilePath, someGenFilePath, stmts, exportedVars || [], preamble);
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return extractSourceMap(source) !;
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}
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describe('source maps', () => {
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it('should emit an inline source map', () => {
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const source = new ParseSourceFile(';;;var', 'in.js');
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const startLocation = new ParseLocation(source, 0, 0, 3);
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const endLocation = new ParseLocation(source, 7, 0, 6);
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const sourceSpan = new ParseSourceSpan(startLocation, endLocation);
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const someVar = o.variable('someVar', null, sourceSpan);
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const sm = emitSourceMap(someVar.toStmt(), [], '/* MyPreamble \n */');
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expect(sm.sources).toEqual([someSourceFilePath, 'in.js']);
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expect(sm.sourcesContent).toEqual([' ', ';;;var']);
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expect(originalPositionFor(sm, {line: 3, column: 0}))
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.toEqual({line: 1, column: 3, source: 'in.js'});
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});
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});
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});
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}
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