Build time is raising with each incremental compilation

[slavafomin]

Hello!

Thank you for this great module!

However, I'm experiencing the situation where built time is raising with each sequential incremental build.

Here's the output:

$ ./node_modules/.bin/gulp sources:watch
[02:45:16] Requiring external module ts-node/register
[02:45:19] Using gulpfile ~/projects/moebius/backend/moebius-server/gulpfile.ts
[02:45:19] Starting 'sources:compile'...
[02:45:27] Finished 'sources:compile' after 7.41 s
[02:45:27] Starting 'sources:watch'...
[02:45:31] Starting 'sources:compile'...
[02:45:41] Finished 'sources:compile' after 11 s
[02:45:44] Starting 'sources:compile'...
[02:46:01] Finished 'sources:compile' after 17 s
[02:46:04] Starting 'sources:compile'...
[02:46:26] Finished 'sources:compile' after 23 s
[02:46:33] Starting 'sources:compile'...
[02:47:01] Finished 'sources:compile' after 27 s
[02:47:26] Starting 'sources:compile'...
[02:48:02] Finished 'sources:compile' after 36 s

Here's my gulpfile.ts:

I'm using Gulpclass module for convenience.

import * as gulp from 'gulp';
import * as sourcemaps from 'gulp-sourcemaps';
import * as ts from 'gulp-typescript';

import {Gulpclass, Task} from 'gulpclass';


const tsProject = ts.createProject('tsconfig.json');

const sourcesGlob = './src/**/*.ts';


@Gulpclass()
export class Gulpfile {

  @Task('sources:compile')
  sourcesCompile (): any {

    return gulp.src(sourcesGlob)
      .pipe(sourcemaps.init())
      .pipe(tsProject()).js
      .pipe(sourcemaps.write('./'))
      .pipe(gulp.dest('./build/'))
    ;

  }

  @Task('sources:watch', ['sources:compile'])
  sourcesWatch () {
    return gulp.watch(sourcesGlob, ['sources:compile']);
  }

}

And here's my tsconfig.json:

{
  "compilerOptions": {
    "lib": ["es6"],
    "module": "commonjs",
    "target": "ES6",
    "alwaysStrict": true,
    "noImplicitAny": true,
    "outDir": "build/",
    "pretty": true,
    "removeComments": true,
    "sourceMap": true,
    "emitDecoratorMetadata": true,
    "experimentalDecorators": true,
    "typeRoots": [
      "node_modules/@types"
    ],
    "rootDir": "./",
    "declaration": true
  },
  "include": [
    "gulpfile.ts",
    "src/**/*"
  ],
  "exclude": [
    "node_modules/",
    "src/**/~*"
  ]
}

Do you know, what could be the problem?

Thank you!

---

$ ./node_modules/.bin/gulp --version
[02:55:00] Requiring external module ts-node/register
[02:55:00] CLI version 3.9.1
[02:55:00] Local version 3.9.1

$ tsc --version
Version 2.4.1

[slavafomin]

After further investigation it looks like the problem is related to sourcemaps. When I remove sourcemap generation from my stream it starts to work as expected:

// Works correctly:
return gulp.src(sourcesGlob)
//  .pipe(sourcemaps.init())
  .pipe(tsProject()).js
//  .pipe(sourcemaps.write('./'))
  .pipe(gulp.dest('./build/'))
;

[ivogabe]

Strange, I don't know how that can happen. Could you take a look if the memory usage increases after each build? That might point to a memory leak.

[ivogabe]

Is this still an issue with the latest release?

[ivogabe]

I close this as this issue seems inactive. A similar issue can be found at #549.