Emit .buildinfo file

.gitmodules

@@ -15,3 +15,7 @@
 	path = typescript/2.7
 	url = https://github.com/Microsoft/TypeScript.git
 	branch = release-2.7
+[submodule "typescript/3.4"]
+	path = typescript/3.4
+	url = https://github.com/Microsoft/TypeScript
+	branch = release-3.4

gulpfile.js

@@ -13,7 +13,8 @@ const tsVersions = {
 	dev: './typescript/dev',
 	release23: './typescript/2.3',
 	release27: './typescript/2.7',
-	release29: './typescript/2.9'
+	release29: './typescript/2.9',
+	release34: './typescript/3.4'
 };
 
 function findTSDefinition(location) {
@@ -96,6 +97,7 @@ const libs = [
 	['2.7', require(tsVersions.release27)],
 	['2.3', require(tsVersions.release23)],
 	['2.9', require(tsVersions.release29)],
+	['3.4', require(tsVersions.release34)],
 	['dev', require(tsVersions.dev)]
 ];
 
@@ -156,7 +158,7 @@ async function runExecTest(testName) {
 	const testDir = path.posix.join('test', testName);
 
 	return new Promise((resolve, reject) => {
-		childProcess.execFile("gulp", {
+		childProcess.exec("gulp", {
 			cwd: testDir,
 		}, (err) => {
 			if (err) {

lib/compiler.ts

@@ -24,6 +24,8 @@ interface OutputFile {
 	jsMapContent?: string;
 	dtsContent?: string;
 	dtsMapContent?: string;
+	buildinfoFileName?: string;
+	buildinfoContent?: string;
 }
 
 /**
@@ -169,6 +171,10 @@ export class ProjectCompiler implements ICompiler {
 			case 'map':
 				file.jsMapContent = content;
 				break;
+			case 'tsbuildinfo':
+				file.buildinfoFileName = fileName;
+				file.buildinfoContent = content;
+				break;
 		}
 	}
 	private emit(result: CompilationResult, preEmitDiagnostics: ReadonlyArray<ts.DiagnosticWithLocation>, callback: ts.WriteFileCallback) {
@@ -193,7 +199,7 @@ export class ProjectCompiler implements ICompiler {
 			this.project.output.diagnostic(error);
 		}
 	}
-	private emitFile({ file, jsFileName, dtsFileName, dtsMapFileName, jsContent, dtsContent, dtsMapContent, jsMapContent }: OutputFile, currentDirectory: string) {
+	private emitFile({ file, jsFileName, dtsFileName, dtsMapFileName, jsContent, dtsContent, dtsMapContent, jsMapContent, buildinfoFileName, buildinfoContent }: OutputFile, currentDirectory: string) {
 		if (!jsFileName) return;
 
 		let base: string;
@@ -233,6 +239,10 @@ export class ProjectCompiler implements ICompiler {
 			}
 			this.project.output.writeDts(baseDeclarations, dtsFileName, dtsContent, dtsMapContent, file ? file.gulp.cwd : currentDirectory, file);
 		}
+		if (buildinfoContent !== undefined) {
+			this.project.output.writeBuildInfo(base, buildinfoFileName, buildinfoContent, file ? file.gulp.cwd : currentDirectory);
+		}
+
 	}
 
 	private removeSourceMapComment(content: string): string {

lib/output.ts

@@ -9,21 +9,24 @@ import * as reporter from './reporter';
 import * as project from './project';
 
 export class Output {
-	constructor(_project: project.ProjectInfo, streamFull: stream.Readable, streamJs: stream.Readable, streamDts: stream.Readable) {
+	constructor(_project: project.ProjectInfo, streamFull: stream.Readable, streamJs: stream.Readable, streamDts: stream.Readable, streamBuildInfo: stream.Readable) {
 		this.project = _project;
 		this.streamFull = streamFull;
 		this.streamJs = streamJs;
 		this.streamDts = streamDts;
+		this.streamBuildInfo = streamBuildInfo;
 	}
 
 	project: project.ProjectInfo;
 	result: reporter.CompilationResult;
-	// .js and .d.ts files
+	// .js and .d.ts and .tsbuildinfo files
 	streamFull: stream.Readable;
 	// .js files
 	streamJs: stream.Readable;
 	// .d.ts files
 	streamDts: stream.Readable;
+	// .tsbuildinfo files
+	streamBuildInfo: stream.Readable;
 
 	// Number of pending IO operatrions
 	private pendingIO = 0;
@@ -76,6 +79,18 @@ export class Output {
 		});
 	}
 
+	writeBuildInfo(base: string, fileName: string, content: string, cwd: string) {
+		const file = new VinylFile({
+			path: fileName,
+			contents: Buffer.from(content),
+			cwd,
+			base
+		});
+
+		this.streamFull.push(file);
+		this.streamBuildInfo.push(file);
+	}
+
 	private async applySourceMap(sourceMapContent: string, original: input.File, output: VinylFile) {
 		if (sourceMapContent === undefined) return undefined;
 

lib/project.ts

@@ -72,7 +72,7 @@ export function setupProject(projectDirectory: string, configFileName: string, r
 		compiler.prepare(projectInfo, finalTransformers);
 
 		const stream = new CompileStream(projectInfo);
-		projectInfo.output = new Output(projectInfo, stream, stream.js, stream.dts);
+		projectInfo.output = new Output(projectInfo, stream, stream.js, stream.dts, stream.buildInfo);
 		projectInfo.reporter = reporter || defaultReporter();
 
 		stream.on('finish', () => {
@@ -143,6 +143,7 @@ function src(this: Project) {
 export interface ICompileStream extends NodeJS.ReadWriteStream {
 	js: stream.Readable;
 	dts: stream.Readable;
+	buildInfo: stream.Readable;
 }
 class CompileStream extends stream.Duplex implements ICompileStream {
 	constructor(project: ProjectInfo) {
@@ -188,6 +189,7 @@ class CompileStream extends stream.Duplex implements ICompileStream {
 
 	js: stream.Readable = new CompileOutputStream();
 	dts: stream.Readable = new CompileOutputStream();
+	buildInfo: stream.Readable = new CompileOutputStream();
 }
 class CompileOutputStream extends stream.Readable {
 	constructor() {

package.json

@@ -77,6 +77,7 @@
     "@types/through2": "2.0.33",
     "@types/vinyl": "2.0.2",
     "@types/vinyl-fs": "2.4.9",
+    "compare-versions": "^3.5.1",
     "gulp": "^4.0.0",
     "gulp-concat": "^2.6.1",
     "gulp-diff": "^1.0.0",

test/baselines/base/3.4/errors.txt

@@ -0,0 +1,18 @@
+TypeScript error: error TS2318: Cannot find global type 'Array'.
+TypeScript error: error TS2318: Cannot find global type 'Boolean'.
+TypeScript error: error TS2318: Cannot find global type 'Function'.
+TypeScript error: error TS2318: Cannot find global type 'IArguments'.
+TypeScript error: error TS2318: Cannot find global type 'Number'.
+TypeScript error: error TS2318: Cannot find global type 'Object'.
+TypeScript error: error TS2318: Cannot find global type 'RegExp'.
+TypeScript error: error TS2318: Cannot find global type 'String'.
+{
+    "transpileErrors": 0,
+    "optionsErrors": 0,
+    "syntaxErrors": 0,
+    "globalErrors": 8,
+    "semanticErrors": 0,
+    "declarationErrors": 0,
+    "emitErrors": 0,
+    "emitSkipped": false
+}

test/baselines/base/3.4/js/a.js

@@ -0,0 +1 @@
+var x = {};

test/baselines/basic/3.4/dts/other-3.d.ts

@@ -0,0 +1,3 @@
+export declare class Hello {
+    value: string;
+}

test/baselines/basic/3.4/dts/test-3.d.ts

@@ -0,0 +1 @@
+export {};

test/baselines/basic/3.4/errors.txt

@@ -0,0 +1,10 @@
+{
+    "transpileErrors": 0,
+    "optionsErrors": 0,
+    "syntaxErrors": 0,
+    "globalErrors": 0,
+    "semanticErrors": 0,
+    "declarationErrors": 0,
+    "emitErrors": 0,
+    "emitSkipped": false
+}