chore: Remove gulp from app demos

[ajivanyandev]

No description provided.

[Copilot]

Pull request overview

This PR removes the Gulp-based workflow from apps/demos and replaces the former gulp tasks with plain Node.js scripts invoked via package.json scripts and Nx run-commands, simplifying the demos’ build/prepare pipeline and dropping the gulp dependency.

Changes:

• Removed gulp from apps/demos dependencies and deleted the apps/demos/gulpfile.js/* tasks.
• Added Node.js script replacements for the former gulp js, gulp shared, gulp bundles, and gulp update-config tasks.
• Updated Nx target configuration (apps/demos/project.json) and repo documentation to reflect the new build approach.

Reviewed changes

Copilot reviewed 11 out of 12 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
pnpm-lock.yaml	Removes the gulp entry from the demos importer.
apps/demos/scripts/update-config.js	New Node script replacing gulp update-config (writes bundled-mode demo configs).
apps/demos/scripts/prepare-shared.js	New Node script replacing gulp shared (copies shared resources).
apps/demos/scripts/prepare-js-configs.js	New Node script replacing gulp js (init repo config, copy shared JS resources, write non-bundle configs).
apps/demos/scripts/build-bundles.js	New Node script replacing gulp bundles (copy bundles + build framework bundles).
apps/demos/project.json	Switches targets to nx:run-commands and updates inputs to reflect new scripts/utilities.
apps/demos/package.json	Removes gulp dependency; rewires scripts to Node-based replacements.
apps/demos/gulpfile.js/shared.js	Deletes Gulp shared task implementation.
apps/demos/gulpfile.js/js.js	Deletes Gulp js/bundles task implementation.
apps/demos/gulpfile.js/index.js	Deletes Gulp task exports.
apps/demos/.gitignore	Removes ignore entry related to gulpfile eslint config.
.github/copilot-instructions.md	Updates build-system description to remove Gulp references.

Files not reviewed (1)

• pnpm-lock.yaml: Language not supported

Comments suppressed due to low confidence (2)

apps/demos/project.json:74

• prepare-bundles now runs node scripts/update-config.js, which rewrites demo Demos/**/config.js files (via utils/internal/create-config.js). However, the target outputs only lists {projectRoot}/bundles, so Nx caching/restores won’t account for the updated config files. Add {projectRoot}/Demos/**/config.js (and any other generated config outputs, if applicable) to this target’s outputs to keep cache correctness.

    "prepare-bundles": {
      "executor": "nx:run-commands",
      "options": {
        "commands": [
          "pnpm run generate-devextreme-angular-umd",
          "node scripts/build-bundles.js",
          "node scripts/update-config.js"
        ],
        "parallel": false,
        "cwd": "{projectRoot}"
      },
      "dependsOn": [
        // "^build" uncomment me after migrating to PNPM
      ],
      "inputs": [
        "default",
        "{projectRoot}/scripts/**/*",
        "{projectRoot}/utils/bundle/**/*",
        "{projectRoot}/utils/internal/create-config.js",
        "{projectRoot}/rollup.devextreme-angular.umd.config.mjs"
      ],
      "outputs": [
        "{projectRoot}/bundles"
      ]

apps/demos/project.json:133

• prepare-js runs generate-ng-umd, generate-external-bundles, and node utils/create-tgz-packages.js, but the target inputs don’t include the corresponding Rollup config files (rollup.ng.umd.config.mjs, rollup.external.bundles.config.mjs) or utils/create-tgz-packages.js. This can make Nx cache the target with stale results when those files change. Consider adding these files to inputs (or broadening to {projectRoot}/utils/**/* / {projectRoot}/rollup*.config.mjs if that’s acceptable for caching).

    "prepare-js": {
      "executor": "nx:run-commands",
      "options": {
        "commands": [
          "pnpm nx build devextreme",
          "pnpm nx run-many --targets=pack --projects=devextreme-angular,devextreme-react,devextreme-vue --parallel",
          "node scripts/prepare-js-configs.js",
          "pnpm run generate-ng-umd",
          "pnpm run generate-devextreme-angular-umd",
          "pnpm run generate-external-bundles",
          "node utils/create-tgz-packages.js"
        ],
        "parallel": false,
        "cwd": "{projectRoot}"
      },
      "inputs": [
        "default",
        "{projectRoot}/scripts/**/*",
        "{projectRoot}/utils/shared/config-helper.js",
        "{projectRoot}/utils/internal/create-config.js",
        "{projectRoot}/utils/copy-shared-resources/**/*",
        "{projectRoot}/rollup.devextreme-angular.umd.config.mjs"
      ],
      "outputs": [
        "{projectRoot}/Demos/**/config.js"
      ]