当我从命令行运行tsc时，创建了.js、.map和.d.ts文件：

C:\Users\{user}\Documents\My Projects\BEPS\angular2-soap>tsc -version
Version 1.8.10

...但是当我调用下面的Gulp函数时，一切都正常工作，除了.d.ts文件没有被创建/复制到./app/目录：

gulp.task('compile-typescript', function () {
    var sourcemaps = require('gulp-sourcemaps');
    var typescript = require('gulp-typescript');
    var typescriptCompiler = typescript({typescript: require('typescript')});
    var typescriptProject = typescript(typescript.createProject('tsconfig.json'));

    var tsResults = gulp.src(['!./src/**/spec*.ts', './src/**/*.ts'])
        .pipe(typescriptProject)
        .pipe(sourcemaps.init())
        .pipe(sourcemaps.write('../map/'))
        .pipe(gulp.dest('./app/'))
        .pipe(typescriptCompiler).dts.pipe(gulp.dest('./app/'));

    return tsResults;
});

我的package.json文件片段：

"devDependencies": {
   "autoprefixer": "6.3.6",
   "concurrently": "2.0.0",
   "cssnano": "3.5.2",
   "del": "2.2.0",
   "gulp": "3.9.1",
   "gulp-ext-replace": "0.3.0",
   "gulp-imagemin": "2.4.0",
   "gulp-postcss": "6.1.0",
   "gulp-sourcemaps": "1.6.0",
   "gulp-typescript": "2.13.0",
   "http-server": "0.9.0",
   "jasmine-core": "2.4.1",
   "karma": "0.13.22",
   "karma-chrome-launcher": "0.2.3",
   "karma-jasmine": "0.3.8",
   "karma-spec-reporter": "0.0.26",
   "lite-server": "2.2.0",
   "postcss": "5.0.19",
   "postcss-scss": "0.1.7",
   "precss": "^1.3.0",
   "run-sequence": "1.1.5",
   "systemjs": "0.19.26",
   "typescript": "latest",
   "typings": "0.8.1"
 },

我的tsconfig.json文件：

{
  "compileOnSave": true,
  "compilerOptions": {
    "target": "ES5",
    "module": "System",
    "moduleResolution": "node",
    "emitDecoratorMetadata": true,
    "experimentalDecorators": true,
    "removeComments": true,
    "noImplicitAny": true,
    "declaration": true,
    "sourceMap": true,
    "mapRoot": "map/",
    "diagnostics": true
  },
  "exclude": [
    "node_modules",
    "typings"
  ]
}

我以为我需要做的就是使用dts管道将输入文件发送到./app/
我错过了什么/做错了什么？谢谢！
尝试应用t34 t5中的建议：

gulp.task('compile-typescript', function () {
    var sourcemaps = require('gulp-sourcemaps');
    var typescript = require('gulp-typescript');
    var project = typescript.createProject('tsconfig.json', {declaration: true});
    var merge = require('merge2');

    var tsResults = gulp.src(['!./src/**/spec*.ts', './src/**/*.ts'])
        .pipe(sourcemaps.init())
        .pipe(typescript(project))
        .pipe(sourcemaps.write('../map/'));

    return merge([
        tsResults.dts.pipe(gulp.dest('./app/')),
        tsResults.js.pipe(gulp.dest('./app/'))
    ]);
});

访问tsResults.dts时出错：

TypeError: Cannot read property 'pipe' of undefined

我的猜测是sourcemaps流是正在使用的（不是typescript流）...这有道理吗？如果是，我能做什么来修复它？
下面的代码同时生成.js和.d.ts文件-因为它没有尝试同时生成.map文件：

gulp.task('compile-typescript', function () {
    var typescript = require('gulp-typescript');
    var project = typescript.createProject('tsconfig.json', {declaration: true});
    var merge = require('merge2');

    var tsResults = gulp.src(['!./src/**/spec*.ts', './src/**/*.ts'])
        .pipe(typescript(project));

    return merge([
        tsResults.dts.pipe(gulp.dest('./app/')),
        tsResults.js.pipe(gulp.dest('./app/'))
    ]);
});