629 lines
28 KiB
TypeScript
629 lines
28 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 {ParseLocation, ParseSourceFile, ParseSourceSpan} from '@angular/compiler';
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import * as o from '@angular/compiler/src/output/output_ast';
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import * as ts from 'typescript';
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import {TypeScriptNodeEmitter} from '../../src/transformers/node_emitter';
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import {Directory, MockAotContext, MockCompilerHost} from '../mocks';
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const sourceMap = require('source-map');
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const someGenFilePath = '/somePackage/someGenFile';
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const someGenFileName = someGenFilePath + '.ts';
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const anotherModuleUrl = '/somePackage/someOtherPath';
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const sameModuleIdentifier = new o.ExternalReference(null, 'someLocalId', null);
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const externalModuleIdentifier = new o.ExternalReference(anotherModuleUrl, 'someExternalId', null);
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describe('TypeScriptNodeEmitter', () => {
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let context: MockAotContext;
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let host: MockCompilerHost;
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let emitter: TypeScriptNodeEmitter;
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let someVar: o.ReadVarExpr;
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beforeEach(() => {
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context = new MockAotContext('/', FILES);
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host = new MockCompilerHost(context);
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emitter = new TypeScriptNodeEmitter(false);
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someVar = o.variable('someVar', null, null);
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});
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function emitStmt(
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stmt: o.Statement|o.Statement[], format: Format = Format.Flat, preamble?: string): string {
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const stmts = Array.isArray(stmt) ? stmt : [stmt];
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const program = ts.createProgram(
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[someGenFileName], {module: ts.ModuleKind.CommonJS, target: ts.ScriptTarget.ES2017}, host);
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const moduleSourceFile = program.getSourceFile(someGenFileName);
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const transformers: ts.CustomTransformers = {
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before: [() => {
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return sourceFile => {
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const [newSourceFile] = emitter.updateSourceFile(sourceFile, stmts, preamble);
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return newSourceFile;
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};
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}]
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};
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let result: string = '';
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program.emit(moduleSourceFile, (fileName, data) => {
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if (fileName.startsWith(someGenFilePath)) {
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result = data;
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}
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}, undefined, undefined, transformers);
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return normalizeResult(result, format);
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}
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it('should declare variables', () => {
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expect(emitStmt(someVar.set(o.literal(1)).toDeclStmt())).toEqual(`var someVar = 1;`);
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expect(emitStmt(someVar.set(o.literal(1)).toDeclStmt(null, [o.StmtModifier.Final])))
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.toEqual(`var someVar = 1;`);
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expect(emitStmt(someVar.set(o.literal(1)).toDeclStmt(null, [o.StmtModifier.Exported])))
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.toEqual(`var someVar = 1; exports.someVar = someVar;`);
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});
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describe('declare variables with ExternExpressions as values', () => {
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it('should create no reexport if the identifier is in the same module', () => {
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// identifier is in the same module -> no reexport
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expect(emitStmt(someVar.set(o.importExpr(sameModuleIdentifier)).toDeclStmt(null, [
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o.StmtModifier.Exported
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]))).toEqual('var someVar = someLocalId; exports.someVar = someVar;');
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});
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it('should create no reexport if the variable is not exported', () => {
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expect(emitStmt(someVar.set(o.importExpr(externalModuleIdentifier)).toDeclStmt()))
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.toEqual(
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`const i0 = require("/somePackage/someOtherPath"); var someVar = i0.someExternalId;`);
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});
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it('should create no reexport if the variable is typed', () => {
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expect(emitStmt(someVar.set(o.importExpr(externalModuleIdentifier))
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.toDeclStmt(o.DYNAMIC_TYPE, [o.StmtModifier.Exported])))
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.toEqual(
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`const i0 = require("/somePackage/someOtherPath"); var someVar = i0.someExternalId; exports.someVar = someVar;`);
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});
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it('should create a reexport', () => {
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const result = emitStmt(someVar.set(o.importExpr(externalModuleIdentifier)).toDeclStmt(null, [
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o.StmtModifier.Exported
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]));
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expect(result).toContain(`var someOtherPath_1 = require("/somePackage/someOtherPath");`);
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if (!result.includes('exports.someVar = someOtherPath_1.someExternalId;') &&
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// In TS 3.9 re-exports of namespaced imports are defined as getters
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!result.includes(
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'Object.defineProperty(exports, "someVar", { enumerable: true, get: function () { return someOtherPath_1.someExternalId; } });')) {
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fail(
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'Expected `someVar` to be exported directly or via a `definedProperty` call. Instead got:\n' +
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result);
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}
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});
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it('should create multiple reexports from the same file', () => {
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const someVar2 = o.variable('someVar2');
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const externalModuleIdentifier2 =
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new o.ExternalReference(anotherModuleUrl, 'someExternalId2', null);
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const result = emitStmt([
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someVar.set(o.importExpr(externalModuleIdentifier))
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.toDeclStmt(null, [o.StmtModifier.Exported]),
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someVar2.set(o.importExpr(externalModuleIdentifier2))
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.toDeclStmt(null, [o.StmtModifier.Exported])
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]);
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expect(result).toContain(`var someOtherPath_1 = require("/somePackage/someOtherPath");`);
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if (!result.includes(
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'exports.someVar = someOtherPath_1.someExternalId;' +
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'exports.someVar2 = someOtherPath_1.someExternalId2;') &&
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// In TS 3.9 re-exports of namespaced imports are defined as getters
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!result.includes(
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'Object.defineProperty(exports, "someVar", { enumerable: true, get: function () { return someOtherPath_1.someExternalId; } }); ' +
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'Object.defineProperty(exports, "someVar2", { enumerable: true, get: function () { return someOtherPath_1.someExternalId2; } })')) {
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fail(
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'Expected `someVar` and `someVar2` to be exported directly or via a `definedProperty` call. Instead got:\n' +
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result);
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}
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});
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});
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it('should read and write variables', () => {
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expect(emitStmt(someVar.toStmt())).toEqual(`someVar;`);
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expect(emitStmt(someVar.set(o.literal(1)).toStmt())).toEqual(`someVar = 1;`);
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expect(emitStmt(someVar.set(o.variable('someOtherVar').set(o.literal(1))).toStmt()))
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.toEqual(`someVar = someOtherVar = 1;`);
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});
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it('should read and write keys', () => {
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expect(emitStmt(o.variable('someMap').key(o.variable('someKey')).toStmt()))
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.toEqual(`someMap[someKey];`);
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expect(emitStmt(o.variable('someMap').key(o.variable('someKey')).set(o.literal(1)).toStmt()))
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.toEqual(`someMap[someKey] = 1;`);
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});
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it('should read and write properties', () => {
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expect(emitStmt(o.variable('someObj').prop('someProp').toStmt())).toEqual(`someObj.someProp;`);
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expect(emitStmt(o.variable('someObj').prop('someProp').set(o.literal(1)).toStmt()))
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.toEqual(`someObj.someProp = 1;`);
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});
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it('should invoke functions and methods and constructors', () => {
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expect(emitStmt(o.variable('someFn').callFn([o.literal(1)]).toStmt())).toEqual('someFn(1);');
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expect(emitStmt(o.variable('someObj').callMethod('someMethod', [o.literal(1)]).toStmt()))
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.toEqual('someObj.someMethod(1);');
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expect(emitStmt(o.variable('SomeClass').instantiate([o.literal(1)]).toStmt()))
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.toEqual('new SomeClass(1);');
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});
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it('should invoke functions and methods and constructors', () => {
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expect(emitStmt(o.variable('someFn').callFn([o.literal(1)]).toStmt())).toEqual('someFn(1);');
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expect(emitStmt(o.variable('someObj').callMethod('someMethod', [o.literal(1)]).toStmt()))
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.toEqual('someObj.someMethod(1);');
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expect(emitStmt(o.variable('SomeClass').instantiate([o.literal(1)]).toStmt()))
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.toEqual('new SomeClass(1);');
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});
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it('should support builtin methods', () => {
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expect(emitStmt(o.variable('arr1')
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.callMethod(o.BuiltinMethod.ConcatArray, [o.variable('arr2')])
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.toStmt()))
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.toEqual('arr1.concat(arr2);');
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expect(emitStmt(o.variable('observable')
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.callMethod(o.BuiltinMethod.SubscribeObservable, [o.variable('listener')])
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.toStmt()))
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.toEqual('observable.subscribe(listener);');
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expect(emitStmt(
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o.variable('fn').callMethod(o.BuiltinMethod.Bind, [o.variable('someObj')]).toStmt()))
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.toEqual('fn.bind(someObj);');
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});
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it('should support literals', () => {
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expect(emitStmt(o.literal(0).toStmt())).toEqual('0;');
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expect(emitStmt(o.literal(true).toStmt())).toEqual('true;');
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expect(emitStmt(o.literal('someStr').toStmt())).toEqual(`"someStr";`);
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expect(emitStmt(o.literalArr([o.literal(1)]).toStmt())).toEqual(`[1];`);
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expect(emitStmt(o.literalMap([
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{key: 'someKey', value: o.literal(1), quoted: false},
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{key: 'a', value: o.literal('a'), quoted: false},
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{key: 'b', value: o.literal('b'), quoted: true},
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{key: '*', value: o.literal('star'), quoted: false},
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]).toStmt())
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.replace(/\s+/gm, ''))
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.toEqual(`({someKey:1,a:"a","b":"b","*":"star"});`);
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// Regressions #22774
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expect(emitStmt(o.literal('\\0025BC').toStmt())).toEqual('"\\\\0025BC";');
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expect(emitStmt(o.literal('"some value"').toStmt())).toEqual('"\\"some value\\"";');
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expect(emitStmt(o.literal('"some \\0025BC value"').toStmt()))
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.toEqual('"\\"some \\\\0025BC value\\"";');
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expect(emitStmt(o.literal('\n \\0025BC \n ').toStmt())).toEqual('"\\n \\\\0025BC \\n ";');
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expect(emitStmt(o.literal('\r \\0025BC \r ').toStmt())).toEqual('"\\r \\\\0025BC \\r ";');
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});
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it('should support blank literals', () => {
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expect(emitStmt(o.literal(null).toStmt())).toEqual('null;');
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expect(emitStmt(o.literal(undefined).toStmt())).toEqual('undefined;');
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expect(emitStmt(o.variable('a', null).isBlank().toStmt())).toEqual('(a == null);');
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});
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it('should support external identifiers', () => {
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expect(emitStmt(o.importExpr(sameModuleIdentifier).toStmt())).toEqual('someLocalId;');
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expect(emitStmt(o.importExpr(externalModuleIdentifier).toStmt()))
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.toEqual(`const i0 = require("/somePackage/someOtherPath"); i0.someExternalId;`);
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});
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it('should support operators', () => {
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const lhs = o.variable('lhs');
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const rhs = o.variable('rhs');
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expect(emitStmt(someVar.cast(o.INT_TYPE).toStmt())).toEqual('someVar;');
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expect(emitStmt(o.not(someVar).toStmt())).toEqual('!someVar;');
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expect(emitStmt(o.assertNotNull(someVar).toStmt())).toEqual('someVar;');
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expect(emitStmt(someVar.conditional(o.variable('trueCase'), o.variable('falseCase')).toStmt()))
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.toEqual('(someVar ? trueCase : falseCase);');
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expect(emitStmt(someVar.conditional(o.variable('trueCase'), o.variable('falseCase'))
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.conditional(o.variable('trueCase'), o.variable('falseCase'))
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.toStmt()))
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.toEqual('((someVar ? trueCase : falseCase) ? trueCase : falseCase);');
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expect(emitStmt(lhs.equals(rhs).toStmt())).toEqual('(lhs == rhs);');
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expect(emitStmt(lhs.notEquals(rhs).toStmt())).toEqual('(lhs != rhs);');
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expect(emitStmt(lhs.identical(rhs).toStmt())).toEqual('(lhs === rhs);');
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expect(emitStmt(lhs.notIdentical(rhs).toStmt())).toEqual('(lhs !== rhs);');
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expect(emitStmt(lhs.minus(rhs).toStmt())).toEqual('(lhs - rhs);');
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expect(emitStmt(lhs.plus(rhs).toStmt())).toEqual('(lhs + rhs);');
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expect(emitStmt(lhs.divide(rhs).toStmt())).toEqual('(lhs / rhs);');
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expect(emitStmt(lhs.multiply(rhs).toStmt())).toEqual('(lhs * rhs);');
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expect(emitStmt(lhs.plus(rhs).multiply(rhs).toStmt())).toEqual('((lhs + rhs) * rhs);');
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expect(emitStmt(lhs.modulo(rhs).toStmt())).toEqual('(lhs % rhs);');
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expect(emitStmt(lhs.and(rhs).toStmt())).toEqual('(lhs && rhs);');
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expect(emitStmt(lhs.or(rhs).toStmt())).toEqual('(lhs || rhs);');
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expect(emitStmt(lhs.lower(rhs).toStmt())).toEqual('(lhs < rhs);');
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expect(emitStmt(lhs.lowerEquals(rhs).toStmt())).toEqual('(lhs <= rhs);');
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expect(emitStmt(lhs.bigger(rhs).toStmt())).toEqual('(lhs > rhs);');
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expect(emitStmt(lhs.biggerEquals(rhs).toStmt())).toEqual('(lhs >= rhs);');
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});
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it('should support function expressions', () => {
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expect(emitStmt(o.fn([], []).toStmt())).toEqual(`(function () { });`);
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expect(emitStmt(o.fn([], [new o.ReturnStatement(o.literal(1))], o.INT_TYPE).toStmt()))
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.toEqual(`(function () { return 1; });`);
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expect(emitStmt(o.fn([new o.FnParam('param1', o.INT_TYPE)], []).toStmt()))
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.toEqual(`(function (param1) { });`);
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});
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it('should support function statements', () => {
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expect(emitStmt(new o.DeclareFunctionStmt('someFn', [], []))).toEqual('function someFn() { }');
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expect(emitStmt(new o.DeclareFunctionStmt('someFn', [], [], null, [o.StmtModifier.Exported])))
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.toEqual(`function someFn() { } exports.someFn = someFn;`);
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expect(emitStmt(new o.DeclareFunctionStmt(
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'someFn', [], [new o.ReturnStatement(o.literal(1))], o.INT_TYPE)))
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.toEqual(`function someFn() { return 1; }`);
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expect(emitStmt(new o.DeclareFunctionStmt('someFn', [new o.FnParam('param1', o.INT_TYPE)], [])))
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.toEqual(`function someFn(param1) { }`);
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});
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describe('comments', () => {
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it('should support a preamble, which is wrapped as a multi-line comment with no trimming or padding',
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() => {
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expect(emitStmt(o.variable('a').toStmt(), Format.Raw, '*\n * SomePreamble\n '))
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.toBe('/**\n * SomePreamble\n */\na;');
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});
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it('should support singleline comments', () => {
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expect(emitStmt(
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new o.ReturnStatement(o.literal(1), null, [o.leadingComment(' a\n b', false)]),
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Format.Raw))
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.toBe('// a\n// b\nreturn 1;');
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});
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it('should support multiline comments', () => {
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expect(emitStmt(
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new o.ReturnStatement(
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o.literal(1), null, [o.leadingComment('Multiline comment', true)]),
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Format.Raw))
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.toBe('/* Multiline comment */\nreturn 1;');
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expect(emitStmt(
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new o.ReturnStatement(
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o.literal(1), null, [o.leadingComment(`Multiline\ncomment`, true)]),
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Format.Raw))
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.toBe(`/* Multiline\ncomment */\nreturn 1;`);
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});
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describe('JSDoc comments', () => {
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it('should be supported', () => {
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expect(emitStmt(
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new o.ReturnStatement(
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o.literal(1), null, [o.jsDocComment([{text: 'Intro comment'}])]),
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Format.Raw))
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.toBe(`/**\n * Intro comment\n */\nreturn 1;`);
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expect(emitStmt(
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new o.ReturnStatement(
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o.literal(1), null,
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[o.jsDocComment([{tagName: o.JSDocTagName.Desc, text: 'description'}])]),
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Format.Raw))
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.toBe(`/**\n * @desc description\n */\nreturn 1;`);
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expect(emitStmt(
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new o.ReturnStatement(
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o.literal(1), null, [o.jsDocComment([
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{text: 'Intro comment'},
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{tagName: o.JSDocTagName.Desc, text: 'description'},
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{tagName: o.JSDocTagName.Id, text: '{number} identifier 123'},
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])]),
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Format.Raw))
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.toBe(
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`/**\n * Intro comment\n * @desc description\n * @id {number} identifier 123\n */\nreturn 1;`);
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});
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it('should escape @ in the text', () => {
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expect(emitStmt(
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new o.ReturnStatement(
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o.literal(1), null, [o.jsDocComment([{text: 'email@google.com'}])]),
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Format.Raw))
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.toBe(`/**\n * email\\@google.com\n */\nreturn 1;`);
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});
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it('should not allow /* and */ in the text', () => {
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expect(
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() => emitStmt(new o.ReturnStatement(
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o.literal(1), null, [o.jsDocComment([{text: 'some text /* */'}])])))
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.toThrowError(`JSDoc text cannot contain "/*" and "*/"`);
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});
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});
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});
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it('should support if stmt', () => {
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const trueCase = o.variable('trueCase').callFn([]).toStmt();
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const falseCase = o.variable('falseCase').callFn([]).toStmt();
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expect(emitStmt(new o.IfStmt(o.variable('cond'), [trueCase])))
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.toEqual('if (cond) { trueCase(); }');
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expect(emitStmt(new o.IfStmt(o.variable('cond'), [trueCase], [falseCase])))
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.toEqual('if (cond) { trueCase(); } else { falseCase(); }');
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});
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it('should support try/catch', () => {
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const bodyStmt = o.variable('body').callFn([]).toStmt();
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const catchStmt = o.variable('catchFn').callFn([o.CATCH_ERROR_VAR, o.CATCH_STACK_VAR]).toStmt();
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expect(emitStmt(new o.TryCatchStmt([bodyStmt], [catchStmt])))
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.toEqual(
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`try { body(); } catch (error) { var stack = error.stack; catchFn(error, stack); }`);
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});
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it('should support support throwing', () => {
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expect(emitStmt(new o.ThrowStmt(someVar))).toEqual('throw someVar;');
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});
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describe('classes', () => {
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let callSomeMethod: o.Statement;
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beforeEach(() => {
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callSomeMethod = o.THIS_EXPR.callMethod('someMethod', []).toStmt();
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});
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it('should support declaring classes', () => {
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expect(emitStmt(new o.ClassStmt('SomeClass', null!, [], [], null!, [])))
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.toEqual('class SomeClass { }');
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expect(emitStmt(new o.ClassStmt('SomeClass', null!, [], [], null!, [], [
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o.StmtModifier.Exported
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]))).toEqual('class SomeClass { } exports.SomeClass = SomeClass;');
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expect(
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emitStmt(new o.ClassStmt('SomeClass', o.variable('SomeSuperClass'), [], [], null!, [])))
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.toEqual('class SomeClass extends SomeSuperClass { }');
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});
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it('should support declaring constructors', () => {
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const superCall = o.SUPER_EXPR.callFn([o.variable('someParam')]).toStmt();
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expect(emitStmt(
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new o.ClassStmt('SomeClass', null!, [], [], new o.ClassMethod(null!, [], []), [])))
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.toEqual(`class SomeClass { constructor() { } }`);
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expect(emitStmt(new o.ClassStmt(
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'SomeClass', null!, [], [],
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new o.ClassMethod(null!, [new o.FnParam('someParam', o.INT_TYPE)], []), [])))
|
|
.toEqual(`class SomeClass { constructor(someParam) { } }`);
|
|
expect(emitStmt(new o.ClassStmt(
|
|
'SomeClass', null!, [], [], new o.ClassMethod(null!, [], [superCall]), [])))
|
|
.toEqual(`class SomeClass { constructor() { super(someParam); } }`);
|
|
expect(emitStmt(new o.ClassStmt(
|
|
'SomeClass', null!, [], [], new o.ClassMethod(null!, [], [callSomeMethod]), [])))
|
|
.toEqual(`class SomeClass { constructor() { this.someMethod(); } }`);
|
|
});
|
|
|
|
it('should support declaring fields', () => {
|
|
expect(emitStmt(new o.ClassStmt(
|
|
'SomeClass', null!, [new o.ClassField('someField')], [], null!, [])))
|
|
.toEqual(`class SomeClass { constructor() { this.someField = null; } }`);
|
|
expect(emitStmt(new o.ClassStmt(
|
|
'SomeClass', null!, [new o.ClassField('someField', o.INT_TYPE)], [], null!, [])))
|
|
.toEqual(`class SomeClass { constructor() { this.someField = null; } }`);
|
|
expect(emitStmt(new o.ClassStmt(
|
|
'SomeClass', null!,
|
|
[new o.ClassField('someField', o.INT_TYPE, [o.StmtModifier.Private])], [], null!,
|
|
[])))
|
|
.toEqual(`class SomeClass { constructor() { this.someField = null; } }`);
|
|
});
|
|
|
|
it('should support declaring getters', () => {
|
|
expect(emitStmt(new o.ClassStmt(
|
|
'SomeClass', null!, [], [new o.ClassGetter('someGetter', [])], null!, [])))
|
|
.toEqual(`class SomeClass { get someGetter() { } }`);
|
|
expect(emitStmt(new o.ClassStmt(
|
|
'SomeClass', null!, [], [new o.ClassGetter('someGetter', [], o.INT_TYPE)], null!,
|
|
[])))
|
|
.toEqual(`class SomeClass { get someGetter() { } }`);
|
|
expect(emitStmt(new o.ClassStmt(
|
|
'SomeClass', null!, [], [new o.ClassGetter('someGetter', [callSomeMethod])], null!,
|
|
[])))
|
|
.toEqual(`class SomeClass { get someGetter() { this.someMethod(); } }`);
|
|
expect(
|
|
emitStmt(new o.ClassStmt(
|
|
'SomeClass', null!, [],
|
|
[new o.ClassGetter('someGetter', [], null!, [o.StmtModifier.Private])], null!, [])))
|
|
.toEqual(`class SomeClass { get someGetter() { } }`);
|
|
});
|
|
|
|
it('should support methods', () => {
|
|
expect(emitStmt(new o.ClassStmt('SomeClass', null!, [], [], null!, [
|
|
new o.ClassMethod('someMethod', [], [])
|
|
]))).toEqual(`class SomeClass { someMethod() { } }`);
|
|
expect(emitStmt(new o.ClassStmt('SomeClass', null!, [], [], null!, [
|
|
new o.ClassMethod('someMethod', [], [], o.INT_TYPE)
|
|
]))).toEqual(`class SomeClass { someMethod() { } }`);
|
|
expect(emitStmt(new o.ClassStmt('SomeClass', null!, [], [], null!, [
|
|
new o.ClassMethod('someMethod', [new o.FnParam('someParam', o.INT_TYPE)], [])
|
|
]))).toEqual(`class SomeClass { someMethod(someParam) { } }`);
|
|
expect(emitStmt(new o.ClassStmt('SomeClass', null!, [], [], null!, [
|
|
new o.ClassMethod('someMethod', [], [callSomeMethod])
|
|
]))).toEqual(`class SomeClass { someMethod() { this.someMethod(); } }`);
|
|
});
|
|
});
|
|
|
|
it('should support builtin types', () => {
|
|
const writeVarExpr = o.variable('a').set(o.NULL_EXPR);
|
|
expect(emitStmt(writeVarExpr.toDeclStmt(o.DYNAMIC_TYPE))).toEqual('var a = null;');
|
|
expect(emitStmt(writeVarExpr.toDeclStmt(o.BOOL_TYPE))).toEqual('var a = null;');
|
|
expect(emitStmt(writeVarExpr.toDeclStmt(o.INT_TYPE))).toEqual('var a = null;');
|
|
expect(emitStmt(writeVarExpr.toDeclStmt(o.NUMBER_TYPE))).toEqual('var a = null;');
|
|
expect(emitStmt(writeVarExpr.toDeclStmt(o.STRING_TYPE))).toEqual('var a = null;');
|
|
expect(emitStmt(writeVarExpr.toDeclStmt(o.FUNCTION_TYPE))).toEqual('var a = null;');
|
|
});
|
|
|
|
it('should support external types', () => {
|
|
const writeVarExpr = o.variable('a').set(o.NULL_EXPR);
|
|
expect(emitStmt(writeVarExpr.toDeclStmt(o.importType(sameModuleIdentifier))))
|
|
.toEqual('var a = null;');
|
|
expect(emitStmt(writeVarExpr.toDeclStmt(o.importType(externalModuleIdentifier))))
|
|
.toEqual(`var a = null;`);
|
|
});
|
|
|
|
it('should support expression types', () => {
|
|
expect(emitStmt(o.variable('a').set(o.NULL_EXPR).toDeclStmt(o.expressionType(o.variable('b')))))
|
|
.toEqual('var a = null;');
|
|
});
|
|
|
|
it('should support expressions with type parameters', () => {
|
|
expect(emitStmt(o.variable('a')
|
|
.set(o.NULL_EXPR)
|
|
.toDeclStmt(o.importType(externalModuleIdentifier, [o.STRING_TYPE]))))
|
|
.toEqual(`var a = null;`);
|
|
});
|
|
|
|
it('should support combined types', () => {
|
|
const writeVarExpr = o.variable('a').set(o.NULL_EXPR);
|
|
expect(emitStmt(writeVarExpr.toDeclStmt(new o.ArrayType(null!)))).toEqual('var a = null;');
|
|
expect(emitStmt(writeVarExpr.toDeclStmt(new o.ArrayType(o.INT_TYPE)))).toEqual('var a = null;');
|
|
|
|
expect(emitStmt(writeVarExpr.toDeclStmt(new o.MapType(null)))).toEqual('var a = null;');
|
|
expect(emitStmt(writeVarExpr.toDeclStmt(new o.MapType(o.INT_TYPE)))).toEqual('var a = null;');
|
|
});
|
|
|
|
describe('source maps', () => {
|
|
function emitStmt(stmt: o.Statement|o.Statement[], preamble?: string): string {
|
|
const stmts = Array.isArray(stmt) ? stmt : [stmt];
|
|
|
|
const program = ts.createProgram(
|
|
[someGenFileName], {
|
|
module: ts.ModuleKind.CommonJS,
|
|
target: ts.ScriptTarget.ES2017,
|
|
sourceMap: true,
|
|
inlineSourceMap: true,
|
|
inlineSources: true,
|
|
},
|
|
host);
|
|
const moduleSourceFile = program.getSourceFile(someGenFileName);
|
|
const transformers: ts.CustomTransformers = {
|
|
before: [context => {
|
|
return sourceFile => {
|
|
const [newSourceFile] = emitter.updateSourceFile(sourceFile, stmts, preamble);
|
|
return newSourceFile;
|
|
};
|
|
}]
|
|
};
|
|
let result: string = '';
|
|
const emitResult = program.emit(
|
|
moduleSourceFile, (fileName, data, writeByteOrderMark, onError, sourceFiles) => {
|
|
if (fileName.startsWith(someGenFilePath)) {
|
|
result = data;
|
|
}
|
|
}, undefined, undefined, transformers);
|
|
return result;
|
|
}
|
|
|
|
function mappingItemsOf(text: string) {
|
|
// find the source map:
|
|
const sourceMapMatch = /sourceMappingURL\=data\:application\/json;base64,(.*)$/.exec(text);
|
|
const sourceMapBase64 = sourceMapMatch![1];
|
|
const sourceMapBuffer = Buffer.from(sourceMapBase64, 'base64');
|
|
const sourceMapText = sourceMapBuffer.toString('utf8');
|
|
const sourceMapParsed = JSON.parse(sourceMapText);
|
|
const consumer = new sourceMap.SourceMapConsumer(sourceMapParsed);
|
|
const mappings: any[] = [];
|
|
consumer.eachMapping((mapping: any) => {
|
|
mappings.push(mapping);
|
|
});
|
|
return mappings;
|
|
}
|
|
|
|
it('should produce a source map that maps back to the source', () => {
|
|
const statement = someVar.set(o.literal(1)).toDeclStmt();
|
|
const text = '<my-comp> a = 1 </my-comp>';
|
|
const sourceName = '/some/file.html';
|
|
const sourceUrl = '../some/file.html';
|
|
const file = new ParseSourceFile(text, sourceName);
|
|
const start = new ParseLocation(file, 0, 0, 0);
|
|
const end = new ParseLocation(file, text.length, 0, text.length);
|
|
statement.sourceSpan = new ParseSourceSpan(start, end);
|
|
|
|
const result = emitStmt(statement);
|
|
const mappings = mappingItemsOf(result);
|
|
|
|
expect(mappings).toEqual([
|
|
{
|
|
source: sourceUrl,
|
|
generatedLine: 3,
|
|
generatedColumn: 0,
|
|
originalLine: 1,
|
|
originalColumn: 0,
|
|
name: null! // TODO: Review use of `!` here (#19904)
|
|
},
|
|
{
|
|
source: sourceUrl,
|
|
generatedLine: 3,
|
|
generatedColumn: 16,
|
|
originalLine: 1,
|
|
originalColumn: 26,
|
|
name: null! // TODO: Review use of `!` here (#19904)
|
|
}
|
|
]);
|
|
});
|
|
|
|
it('should produce a mapping per range instead of a mapping per node', () => {
|
|
const text = '<my-comp> a = 1 </my-comp>';
|
|
const sourceName = '/some/file.html';
|
|
const sourceUrl = '../some/file.html';
|
|
const file = new ParseSourceFile(text, sourceName);
|
|
const start = new ParseLocation(file, 0, 0, 0);
|
|
const end = new ParseLocation(file, text.length, 0, text.length);
|
|
const stmt = (loc: number) => {
|
|
const start = new ParseLocation(file, loc, 0, loc);
|
|
const end = new ParseLocation(file, loc + 1, 0, loc + 1);
|
|
const span = new ParseSourceSpan(start, end);
|
|
return someVar
|
|
.set(new o.BinaryOperatorExpr(
|
|
o.BinaryOperator.Plus, o.literal(loc, null, span), o.literal(loc, null, span), null,
|
|
span))
|
|
.toDeclStmt();
|
|
};
|
|
const stmts = [1, 2, 3, 4, 5, 6].map(stmt);
|
|
const result = emitStmt(stmts);
|
|
const mappings = mappingItemsOf(result);
|
|
|
|
// The span is used in three different nodes but should only be emitted at most twice
|
|
// (once for the start and once for the end of a span).
|
|
const maxDup = Math.max(
|
|
...Array.from(countsOfDuplicatesMap(mappings.map(m => m.originalColumn)).values()));
|
|
expect(maxDup <= 2).toBeTruthy('A redundant range was emitted');
|
|
});
|
|
});
|
|
});
|
|
|
|
function countsOfDuplicatesMap<T>(a: T[]): Map<T, number> {
|
|
const result = new Map<T, number>();
|
|
for (const item of a) {
|
|
result.set(item, (result.get(item) || 0) + 1);
|
|
}
|
|
return result;
|
|
}
|
|
|
|
const FILES: Directory = {
|
|
somePackage: {'someGenFile.ts': `export var a: number;`}
|
|
};
|
|
|
|
const enum Format {
|
|
Raw,
|
|
Flat
|
|
}
|
|
|
|
function normalizeResult(result: string, format: Format): string {
|
|
// Remove TypeScript prefixes
|
|
let res = result.replace('"use strict";', ' ')
|
|
.replace('exports.__esModule = true;', ' ')
|
|
.replace('Object.defineProperty(exports, "__esModule", { value: true });', ' ');
|
|
|
|
// Remove hoisted initial export assignments. These were added in TS 3.9:
|
|
// https://github.com/Microsoft/TypeScript/commit/c6c2c4c8d5aa0947de16f484b8c16fb0eab1c48f
|
|
res = res.replace(/^exports\.\S+ = void 0;$/gm, '');
|
|
|
|
// Remove new lines
|
|
// Squish adjacent spaces
|
|
if (format === Format.Flat) {
|
|
return res.replace(/\n/g, ' ').replace(/ +/g, ' ').replace(/^ /g, '').replace(/ $/g, '');
|
|
}
|
|
|
|
// Remove prefix and postfix spaces
|
|
return res.trim();
|
|
}
|