The Gulp task is not being recognized when I open the project in Visual Studio Code

Whenever I open gulp, I encounter an error related to minifying css and js files using gulp tasks. Despite my efforts to find a solution, the problem remains unresolved.

Error Message: assert.js:374 throw err; ^ AssertionError [ERR_ASSERTION]: Task function must be specified at Gulp.set [as _setTask] (c:\wamp64\www\gulp_p\node_modules\undertaker\lib\set-task.js:10:3) at Gulp.task (c:\wamp64\www\gulp_p\node_modules\undertaker\lib\task.js:13:8) at Object. (c:\wamp64\www\gulp_p\gulpfile.js:64:6) at Module._compile (internal/modules/cjs/loader.js:956:30) ...

My Installation Details:

gulp --version => CLI version: 2.2.0  -  Local version: 4.0.2
node --version => v12.13.0
npm --version => 6.12.0
npx --version => 6.12.0

Package.json Configuration:

{
  "name": "gulp_p",
  "version": "1.0.0",
  "main": "gulpfile.js",
  "dependencies": {
    "gulp": "^4.0.2",
    ...
  },
  "devDependencies": {},
  ...
}

Gulpfiles.js Confirmation: The gulpfile.js seems to work fine on another computer without any errors as it is located in the project's root directory.

'use strict';

var gulp = require('gulp');
...

gulp.task('css', function() {...});

gulp.task('scripts', function() {...});


gulp.task('choose', function(){...});

gulp.task('default',['choose','css','scripts']);

Answer №1

If you are working with gulp v4, the following code will not function:

gulp.task('default',['choose','css','scripts']);

Instead, modify it to:

gulp.task('default',gulp.series('choose','css','scripts'));

This code may work on another machine that is running gulp v3.

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