Sometimes gulp-typescript doesn't generate any files when using typescript@next

[kenotron]

Now Typescript at 1.8.0-dev.20151028, with gulp-typescript, I've been able to repro a bug where gulp-typescript just doesn't output anything.

[kenotron]

With the included TS 1.6.2, works fine. I would see the "dist" directory being generated. But with the typescript@next, it wouldn't generate anything. Strange thing is: if I renamed my importanceType.ts to bar.ts, it would generate it fine. I am very confused as to why the name of the file / module would make gulp-typescript work / not work.

Just to give more details, I have my directory structure as such:

foo/
  node_modules/
  src/
    foo.ts
    importanceType.ts
  package.json
  gulpfile.js

---

my gulpfile.js is

var gulp = require('gulp');
var ts = require('gulp-typescript');

gulp.task('default', function () {
    return gulp.src('src/**/*.ts')
        .pipe(ts({
            typescript: require('typescript'),
            "target": "ES5",
            "module": "commonjs",
            "jsx": "react",
            "sourceMap": true,
            "experimentalDecorators": true,
            "declaration": true,
            "removeComments": true
        }))
        .pipe(gulp.dest('dist'));
});

---

my importanceType.ts

enum importanceType {
    Low = 0,
    Normal = 1,
    High = 2
};

export default importanceType;

---

[ivogabe]

Thanks for reporting, I'll take a look at this. Can you also run the tsc command on your project, to see whether this is a bug of gulp-typescript or TypeScript?

[kenotron]

tsc works fine in the command line. My tsc is pegged at @1.8.0-dev.20151028

[kenotron]

Forgot to type in foo.ts contents:

import importanceType from './importanceType'

[kenotron]

Doing some sleuthing and debugging. Seems like the input.ts's commonSourceDirectory is getting this for fileNames:

Array[4]
0:"E:\workspace\testmodules-backup\packages\foo\src\foo.ts"
1:"E:\workspace\testmodules-backup\packages\foo\src\importanceType.ts"
2:"E:\workspace\testmodules-backup\packages\foo\src________________empty.ts"
3:"src/importanceType.ts"

where as [email protected] gives this:

0:"E:\workspace\testmodules-backup\packages\foo\src\foo.ts"
1:"E:\workspace\testmodules-backup\packages\foo\src\importanceType.ts"
2:"E:\workspace\testmodules-backup\packages\foo\src________________empty.ts"

Something went wonky with the input.ts

[kenotron]

I think I might have a fix: the problem is that ts@next started passing in relative paths to the getSourceFile in the compiler host. You need to simulate the behavior for [email protected]+... I'll work up a PR for you I think to fix this.

[ghost]

This seems related to microsoft/TypeScript#5455

[ghost]

@kenotron seems right, tsc runs fine for me, 1028 and 1029 have the same issue.

[ivogabe]

Looks like the old behavior has been reverted in microsoft/TypeScript#5462. @kenotron does using the latest TypeScript build solve this issue?

[kenotron]

So, by not doing anything, you have dodged a bullet there :) Yes I think this is fixed with typescript@next.