Gulp command must be run two time

Hello,

At the first launch of the compilation, Gulp does not generate the files dependent on other generated files.

ex:

• o = h + cpp
• o = h + cpp
• lib = o + o

You must run the Gulp command a second time I can not find the problem

I have this gulpfile:

var SRC_DIR = 'src'
var EXCLUDE_DOT = `!${SRC_DIR}/**/.*`
var BUILD_DIR = 'dist/.tmp'
var DIST_DIR = 'dist'

const PP_OPTS =  { NODE_ENV: 'production', DEBUG: false}

// 1) compiler les fichiers un par un sauf le tag
// 2) les placer avec le tag dans un dossier tmp
// 3) compiler le tag

gulp.task('default', [ 'mv_exclude', 'mv_tag', 'js', 'tag'])

gulp.task('mv_exclude', function()
{
    gulp.src(`${EXCLUDE_DOT}/*`,
        { base: SRC_DIR})
        .pipe(gulp.dest(BUILD_DIR))
})

gulp.task('js',  function()
{
    gulp.src([`${SRC_DIR}/**/*.js`, EXCLUDE_DOT],
        { base: SRC_DIR})
        .pipe(
            babel({ presets: ['es2015'] })
        )
        .pipe(gulp.dest(BUILD_DIR))
})

gulp.task('mv_tag', function()
{
    gulp.src([`${SRC_DIR}/**/*.tag`, EXCLUDE_DOT],
        { base: SRC_DIR})
        .pipe(gulp.dest(BUILD_DIR))
})
        
gulp.task('tag', function()
{
    gulp.src([`${BUILD_DIR}/**/*.tag`, EXCLUDE_DOT],
        { base: BUILD_DIR})
        .pipe(
            riot()
        )
        .pipe(
            concat('bundle.js')
        )
        .pipe(
            preprocess({ context: PP_OPTS, extension: 'js' } )
        )
        .pipe(
            minify({ext:{ min:'.min.js'}})
        )
        .pipe(gulp.dest(DIST_DIR))
})

At the first launch:

And the second time

And I have no error or notice. I also searched here, but nothing … Did I make a mistake orr is this a bug?

This has already happened and every time this happens when I move files to avoid file name conflis

Merci !

[doowb]

You should be returning the stream in in your tasks. Where you have gulp.src(... change it to return gulp.src(.... This notifies gulp that the task is using a stream and to wait for it to end.

If this doesn’t help, there’s probably something else wrong in a plugin. Either way, this isn’t a gulp issue and you could find more help on Stack Overflow.

[doowb]

This is not a bug.

See the task documentation on how tasks and their dependencies are executed. You need to tell the mv_tag task a dependency of the tag task to ensure the files have finished copying.