Support for typeRoots?

[mikemichaelis]

When compiling with gulp-typescript I receive the error

error TS2304: Cannot find name 'Promise' (or Set or Map)

Having researched this issue I discovered the new TS compilerOption typeRoots.

http://stackoverflow.com/questions/35660498/angular-2-cant-find-promise-map-set-and-iterator

Properly setting this option in tsconfig.json and manually executing tsc, I no longer receive this error message. Unfortunately gulp-typescript does not support typeRoots.

Expected behavior:
Compile w/o error TS2304

Actual behavior:
/home/mike/Projects/rsvt/node_modules/@angular/core/src/facade/collection.d.ts(16,25): error TS2304: Cannot find name 'Map'.
[15:48:20] TypeScript error: /home/mike/Projects/rsvt/node_modules/@angular/core/src/facade/collection.d.ts(16,25): error TS2304: Cannot find name 'Map'.
/home/mike/Projects/rsvt/node_modules/@angular/core/src/facade/collection.d.ts(101,41): error TS2304: Cannot find name 'Set'.
[15:48:20] TypeScript error: /home/mike/Projects/rsvt/node_modules/@angular/core/src/facade/collection.d.ts(101,41): error TS2304: Cannot find name 'Set'.

Your gulpfile:

Include your gulpfile, or only the related task (with ts.createProject).

gulp.task('ts', function() {
    var src = config.appDir + '**/*.ts';
    log('Compiling ' + src);

    var tsProject = $.typescript.createProject(config.tsconfig);

    return gulp
        .src(src)
        .pipe($.plumber({
            errorHandler: error
        }))
        .pipe($.if(args.verbose, $.print()))
        .pipe($.if(config.sourcemaps, $.sourcemaps.init()))
        // .pipe($.typescript(tsProject))
        .pipe(tsProject())
        .pipe($.if(config.sourcemaps, $.sourcemaps.write('.')))
        .pipe(gulp.dest(config.appDir));
});

tsconfig.json

Include your tsconfig, if related to this issue.

{
    "compilerOptions": {
        "target": "es5",
        "module": "system",
        "moduleResolution": "node",
        "sourceMap": true,
        "emitDecoratorMetadata": true,
        "experimentalDecorators": true,
        "removeComments": false,
        "noImplicitAny": false,
        "typeRoots": [
            "node_modules/@types"
        ]
    },
    "types": [ "core-js" ],
    "exclude": [
        "node_modules",
        "bower_components",
        "src/jspm_packages",
        "typings/main",
        "typings/main.d.ts"
    ]
}

It would appear my problem is similar to
lib compilerOptions not used? #420
but resolved using a different TS 2.0 supported config option.

[mikemichaelis]

If anybody else needs the solution it is to switch to gulp-tsc as I could never get gulp-typescript to work at all using Angular 2.0 TS 2.0. There were a few other @types I needed to install such as @types/jasmine @types/node, however gulp-typescript will not use these type definitions regardless. gulp-tsc also has the ability to pass to tsc any parameter you want using options.additionalTscParameters, which is awesome.

project/tsc <-- works great using tsconfig.json w/o typeRoots or types specified.

Here's my new gulpfile.js for TS w/ gulp-tsc

gulp.task('ts', function() {
var src = config.appDir + '**/*.ts';
log('Compiling ' + src);

var tsc = $.tsc;

return gulp
    .src(src)
    .pipe($.plumber({
        errorHandler: error
    }))
    .pipe($.if(args.verbose, $.print()))
    .pipe(tsc( { experimentalDecorators: true }))
    .pipe($.if(config.sourcemaps, $.sourcemaps.write('.')))
    .pipe(gulp.dest(config.appDir));

My old gulp-typescript gulpfile..js which does not work

gulp.task('ts', function() {
var src = config.appDir + '**/*.ts';
log('Compiling ' + src);

var tsProject = $.typescript.createProject(config.tsconfig);

return gulp
    .src(src)
    .pipe($.plumber({
        errorHandler: error
    }))
    .pipe($.if(args.verbose, $.print()))
    .pipe($.if(config.sourcemaps, $.sourcemaps.init()))
    // .pipe($.typescript(tsProject))
    .pipe(tsProject())
    .pipe($.if(config.sourcemaps, $.sourcemaps.write('.')))
    .pipe(gulp.dest(config.appDir));

[ivogabe]

I'll take a look at this issue this weekend.

[ivogabe]

I think that this has been solved in d706e30. Can you try whether gulp-typescript 3.0.2 solves your issues? Also, you can probably remove typeRoots: ["node_modules/@types"], since that's the default.

[kkganesan]

👍 @ivogabe. 3.0.2 fix worked.

[teetotum]

I discovered an issue with gulp-typescript version 3.0.2 and the typeRoots option:
It will run into an error if subfolders exist.

Observed Issue:
error TS2688: Cannot find type definition file for 'foo'

My folder structure for my project:

[MyProject]
  -[TypeScript] # *.ts sourcecode goes here
  -[typings] # *.d.ts type-definitions here
    -[foo] # type-definition subfolder, might contain *.d.ts or might be empty, still causes observed error
      -[bar]
      -[baz]

My tsconfig.json

{
  "compilerOptions": {
    "module": "amd",
    "noImplicitAny": false,
    "noEmitOnError": true,
    "removeComments": false,
    "preserveConstEnums": true,
    "sourceMap": true,
    "target": "es5",
    "typeRoots": [ "typings" ],
    "rootDir": "TypeScript"
  },
  "exclude": [
    "node_modules",
    "wwwroot"
  ],
  "compileOnSave": false
}

My gulp task for typescript compilation:

var sourcemaps = require("gulp-sourcemaps");
var typescript = require("gulp-typescript");
var tsProject = typescript.createProject("tsconfig.json");
gulp.task("compile:typescript", function () {
	var tsResult = tsProject
		.src() // instead of gulp.src(...)
		.pipe(sourcemaps.init())
        .pipe(tsProject());
	return tsResult.js
		.pipe(sourcemaps.write(".",
		{
			includeContent: false,
			sourceRoot: "../../TypeScript/"
		}))
		.pipe(gulp.dest(paths.javascriptDestination)); // destination is ./wwwroot/scripts
});

I can fix the problem for me if I change the typeRoots option in tsconfig.json to "typeRoots": [ "typings/**/*" ],

Expected Behavior
The typeRoots option should only expect the root folders for type-def files to be specified and automatically include all subfolders, and not encounter an error if one of those subfolders does not contain any *.d.ts files.

[ivogabe]

@teetotum Does the behaviour of gulp-typescript differ from tsc? I'd expect that they behave the same way.

[teetotum]

Oh diddums! Just tested my setup with a direct call to tsc.exe (2.0) and I get exactly the same error. Sorry for bringing the issue up here. gulp-typescript behaves correctly.

[mikaye]

Not sure if this ever got resolved. It appears to me that gulp-tsc uses some options form tsconfig.json but not others. Fore example, outDir was taken from tsconfig.json whereas sourceMap was ignored and I had to include in the options. typeRoots is ignored even if I include it in typescript options. Of course, tsc works fine from the terminal

Any thoughts on how to get tsc working from gulp with typings in ./typings?

var typescript = require('gulp-tsc');
gulp.task('compile', function () {
  gulp.src(['electron_src/**/*.ts'])
    .pipe(typescript({ tscPath: "/usr/local/bin/tsc", sourceMap: true, "typeRoots": ["./typings/globals"]}))
    .pipe(gulp.dest('build/electron'))
});

{
  "compilerOptions": {
    "target": "es5",
    "module": "commonjs",
    "moduleResolution": "node",
    "sourceMap": true,
    "emitDecoratorMetadata": true,
    "experimentalDecorators": true,
    "removeComments": false,
    "noImplicitAny": false,
    "suppressImplicitAnyIndexErrors": true,
    "typeRoots": ["./typings/globals"],        
    "outDir": "build/electron"
  },
  "exclude": [
    "node_modules"
  ]
}

[ivogabe]

@mikaye This is the repository for gulp-typescript, but your post references gulp-tsc. gulp-typescript supports typeRoots, but I think that gulp-tsc should also support that options. If you need help with gulp-tsc you can better ask on some other place.

[selmalee]

this bug still exists. gulp-typescript@6.0.0-alpha.1

gulp-typescript does not support typeRoots in tsconfig.json.

[LikeDege]

@seminelee how to resolve this problem?