diff --git a/.github/workflows/check-npm-task.yml b/.github/workflows/check-npm-task.yml
new file mode 100644
index 00000000..2fe90aef
--- /dev/null
+++ b/.github/workflows/check-npm-task.yml
@@ -0,0 +1,120 @@
+# Source: https://github.com/arduino/tooling-project-assets/blob/main/workflow-templates/check-npm-task.md
+name: Check npm
+
+env:
+  # See: https://github.com/actions/setup-node/#readme
+  NODE_VERSION: 20.x
+
+# See: https://docs.github.com/actions/writing-workflows/choosing-when-your-workflow-runs/events-that-trigger-workflows
+on:
+  create:
+  push:
+    paths:
+      - ".github/workflows/check-npm-task.ya?ml"
+      - "**/package.json"
+      - "**/package-lock.json"
+      - "Taskfile.ya?ml"
+  pull_request:
+    paths:
+      - ".github/workflows/check-npm-task.ya?ml"
+      - "**/package.json"
+      - "**/package-lock.json"
+      - "Taskfile.ya?ml"
+  schedule:
+    # Run every Tuesday at 8 AM UTC to catch breakage resulting from changes to the JSON schema.
+    - cron: "0 8 * * TUE"
+  workflow_dispatch:
+  repository_dispatch:
+
+jobs:
+  run-determination:
+    runs-on: ubuntu-latest
+    permissions: {}
+    outputs:
+      result: ${{ steps.determination.outputs.result }}
+    steps:
+      - name: Determine if the rest of the workflow should run
+        id: determination
+        run: |
+          RELEASE_BRANCH_REGEX="refs/heads/[0-9]+.[0-9]+.x"
+          # The `create` event trigger doesn't support `branches` filters, so it's necessary to use Bash instead.
+          if [[
+            "${{ github.event_name }}" != "create" ||
+            "${{ github.ref }}" =~ $RELEASE_BRANCH_REGEX
+          ]]; then
+            # Run the other jobs.
+            RESULT="true"
+          else
+            # There is no need to run the other jobs.
+            RESULT="false"
+          fi
+
+          echo "result=$RESULT" >> $GITHUB_OUTPUT
+
+  validate:
+    name: validate (${{ matrix.project.path }})
+    needs: run-determination
+    if: needs.run-determination.outputs.result == 'true'
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+
+    strategy:
+      fail-fast: false
+      matrix:
+        project:
+          - path: .
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: ${{ env.NODE_VERSION }}
+
+      - name: Install Task
+        uses: arduino/setup-task@v2
+        with:
+          repo-token: ${{ secrets.GITHUB_TOKEN }}
+          version: 3.x
+
+      - name: Validate package.json
+        run: task --silent npm:validate PROJECT_PATH="${{ matrix.project.path }}"
+
+  check-sync:
+    name: check-sync (${{ matrix.project.path }})
+    needs: run-determination
+    if: needs.run-determination.outputs.result == 'true'
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+
+    strategy:
+      fail-fast: false
+      matrix:
+        project:
+          # TODO: add paths of all npm-managed projects in the repository here.
+          - path: .
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: ${{ env.NODE_VERSION }}
+
+      - name: Install Task
+        uses: arduino/setup-task@v2
+        with:
+          repo-token: ${{ secrets.GITHUB_TOKEN }}
+          version: 3.x
+
+      - name: Install npm dependencies
+        run: task npm:install-deps PROJECT_PATH="${{ matrix.project.path }}"
+
+      - name: Check package-lock.json
+        run: git diff --color --exit-code "${{ matrix.project.path }}/package-lock.json"
diff --git a/README.md b/README.md
index 782750aa..95a96224 100644
--- a/README.md
+++ b/README.md
@@ -7,6 +7,7 @@
 [![Check Go Dependencies status](https://github.com/arduino/arduino-lint/actions/workflows/check-go-dependencies-task.yml/badge.svg)](https://github.com/arduino/arduino-lint/actions/workflows/check-go-dependencies-task.yml)
 [![Publish Tester Build status](https://github.com/arduino/arduino-lint/actions/workflows/publish-go-tester-task.yml/badge.svg)](https://github.com/arduino/arduino-lint/actions/workflows/publish-go-tester-task.yml)
 [![Publish Nightly Build status](https://github.com/arduino/arduino-lint/actions/workflows/publish-go-nightly-task.yml/badge.svg)](https://github.com/arduino/arduino-lint/actions/workflows/publish-go-nightly-task.yml)
+[![Check npm status](https://github.com/arduino/arduino-lint/actions/workflows/check-npm-task.yml/badge.svg)](https://github.com/arduino/arduino-lint/actions/workflows/check-npm-task.yml)
 [![Check Python status](https://github.com/arduino/arduino-lint/actions/workflows/check-python-task.yml/badge.svg)](https://github.com/arduino/arduino-lint/actions/workflows/check-python-task.yml)
 [![Check Markdown status](https://github.com/arduino/arduino-lint/actions/workflows/check-markdown-task.yml/badge.svg)](https://github.com/arduino/arduino-lint/actions/workflows/check-markdown-task.yml)
 [![Spell Check status](https://github.com/arduino/arduino-lint/actions/workflows/spell-check-task.yml/badge.svg)](https://github.com/arduino/arduino-lint/actions/workflows/spell-check-task.yml)
diff --git a/Taskfile.yml b/Taskfile.yml
index 5c439e9e..28cded44 100644
--- a/Taskfile.yml
+++ b/Taskfile.yml
@@ -18,6 +18,8 @@ vars:
       || \
       echo '"ERROR: Unable to discover Go packages"' \
     )
+  # Last version of ajv-cli with support for the JSON schema "Draft 4" specification
+  SCHEMA_DRAFT_4_AJV_CLI_VERSION: 3.3.0
   # build vars
   COMMIT:
     sh: echo "$(git log --no-show-signature -n 1 --format=%h)"
@@ -380,6 +382,85 @@ tasks:
     cmds:
       - npm install
 
+  # Parameter variables:
+  # - PROJECT_PATH: path of the npm-managed project. Default value: "./"
+  # Source: https://github.com/arduino/tooling-project-assets/blob/main/workflow-templates/assets/check-npm-task/Taskfile.yml
+  npm:validate:
+    desc: Validate npm configuration files against their JSON schema
+    vars:
+      # Source: https://github.com/SchemaStore/schemastore/blob/master/src/schemas/json/package.json
+      SCHEMA_URL: https://json.schemastore.org/package.json
+      SCHEMA_PATH:
+        sh: task utility:mktemp-file TEMPLATE="package-json-schema-XXXXXXXXXX.json"
+      # Source: https://github.com/SchemaStore/schemastore/blob/master/src/schemas/json/ava.json
+      AVA_SCHEMA_URL: https://json.schemastore.org/ava.json
+      AVA_SCHEMA_PATH:
+        sh: task utility:mktemp-file TEMPLATE="ava-schema-XXXXXXXXXX.json"
+      # Source: https://github.com/SchemaStore/schemastore/blob/master/src/schemas/json/base.json
+      BASE_SCHEMA_URL: https://json.schemastore.org/base.json
+      BASE_SCHEMA_PATH:
+        sh: task utility:mktemp-file TEMPLATE="base-schema-XXXXXXXXXX.json"
+      # Source: https://github.com/SchemaStore/schemastore/blob/master/src/schemas/json/eslintrc.json
+      ESLINTRC_SCHEMA_URL: https://json.schemastore.org/eslintrc.json
+      ESLINTRC_SCHEMA_PATH:
+        sh: task utility:mktemp-file TEMPLATE="eslintrc-schema-XXXXXXXXXX.json"
+      # Source: https://github.com/SchemaStore/schemastore/blob/master/src/schemas/json/jscpd.json
+      JSCPD_SCHEMA_URL: https://json.schemastore.org/jscpd.json
+      JSCPD_SCHEMA_PATH:
+        sh: task utility:mktemp-file TEMPLATE="jscpd-schema-XXXXXXXXXX.json"
+      # Source: https://github.com/SchemaStore/schemastore/blob/master/src/schemas/json/npm-badges.json
+      NPM_BADGES_SCHEMA_URL: https://json.schemastore.org/npm-badges.json
+      NPM_BADGES_SCHEMA_PATH:
+        sh: task utility:mktemp-file TEMPLATE="npm-badges-schema-XXXXXXXXXX.json"
+      # Source: https://github.com/SchemaStore/schemastore/blob/master/src/schemas/json/partial-eslint-plugins.json
+      PARTIAL_ESLINT_PLUGINS_SCHEMA_URL: https://json.schemastore.org/partial-eslint-plugins.json
+      PARTIAL_ESLINT_PLUGINS_PATH:
+        sh: task utility:mktemp-file TEMPLATE="partial-eslint-plugins-schema-XXXXXXXXXX.json"
+      # Source: https://github.com/SchemaStore/schemastore/blob/master/src/schemas/json/prettierrc.json
+      PRETTIERRC_SCHEMA_URL: https://json.schemastore.org/prettierrc.json
+      PRETTIERRC_SCHEMA_PATH:
+        sh: task utility:mktemp-file TEMPLATE="prettierrc-schema-XXXXXXXXXX.json"
+      # Source: https://github.com/SchemaStore/schemastore/blob/master/src/schemas/json/semantic-release.json
+      SEMANTIC_RELEASE_SCHEMA_URL: https://json.schemastore.org/semantic-release.json
+      SEMANTIC_RELEASE_SCHEMA_PATH:
+        sh: task utility:mktemp-file TEMPLATE="semantic-release-schema-XXXXXXXXXX.json"
+      # Source: https://github.com/SchemaStore/schemastore/blob/master/src/schemas/json/stylelintrc.json
+      STYLELINTRC_SCHEMA_URL: https://json.schemastore.org/stylelintrc.json
+      STYLELINTRC_SCHEMA_PATH:
+        sh: task utility:mktemp-file TEMPLATE="stylelintrc-schema-XXXXXXXXXX.json"
+      INSTANCE_PATH: >-
+        {{default "." .PROJECT_PATH}}/package.json
+      PROJECT_FOLDER:
+        sh: pwd
+      WORKING_FOLDER:
+        sh: task utility:mktemp-folder TEMPLATE="dependabot-validate-XXXXXXXXXX"
+    cmds:
+      - wget --quiet --output-document="{{.SCHEMA_PATH}}" {{.SCHEMA_URL}}
+      - wget --quiet --output-document="{{.AVA_SCHEMA_PATH}}" {{.AVA_SCHEMA_URL}}
+      - wget --quiet --output-document="{{.BASE_SCHEMA_PATH}}" {{.BASE_SCHEMA_URL}}
+      - wget --quiet --output-document="{{.ESLINTRC_SCHEMA_PATH}}" {{.ESLINTRC_SCHEMA_URL}}
+      - wget --quiet --output-document="{{.JSCPD_SCHEMA_PATH}}" {{.JSCPD_SCHEMA_URL}}
+      - wget --quiet --output-document="{{.NPM_BADGES_SCHEMA_PATH}}" {{.NPM_BADGES_SCHEMA_URL}}
+      - wget --quiet --output-document="{{.PARTIAL_ESLINT_PLUGINS_PATH}}" {{.PARTIAL_ESLINT_PLUGINS_SCHEMA_URL}}
+      - wget --quiet --output-document="{{.PRETTIERRC_SCHEMA_PATH}}" {{.PRETTIERRC_SCHEMA_URL}}
+      - wget --quiet --output-document="{{.SEMANTIC_RELEASE_SCHEMA_PATH}}" {{.SEMANTIC_RELEASE_SCHEMA_URL}}
+      - wget --quiet --output-document="{{.STYLELINTRC_SCHEMA_PATH}}" {{.STYLELINTRC_SCHEMA_URL}}
+      - |
+        cd "{{.WORKING_FOLDER}}"  # Workaround for https://github.com/npm/cli/issues/3210
+        npx ajv-cli@{{.SCHEMA_DRAFT_4_AJV_CLI_VERSION}} validate \
+          --all-errors \
+          -s "{{.SCHEMA_PATH}}" \
+          -r "{{.AVA_SCHEMA_PATH}}" \
+          -r "{{.BASE_SCHEMA_PATH}}" \
+          -r "{{.ESLINTRC_SCHEMA_PATH}}" \
+          -r "{{.JSCPD_SCHEMA_PATH}}" \
+          -r "{{.NPM_BADGES_SCHEMA_PATH}}" \
+          -r "{{.PARTIAL_ESLINT_PLUGINS_PATH}}" \
+          -r "{{.PRETTIERRC_SCHEMA_PATH}}" \
+          -r "{{.SEMANTIC_RELEASE_SCHEMA_PATH}}" \
+          -r "{{.STYLELINTRC_SCHEMA_PATH}}" \
+          -d "{{.PROJECT_FOLDER}}/{{.INSTANCE_PATH}}"
+
   # Source: https://github.com/arduino/tooling-project-assets/blob/main/workflow-templates/assets/poetry-task/Taskfile.yml
   poetry:install-deps:
     desc: Install dependencies managed by Poetry
@@ -465,6 +546,41 @@ tasks:
         fi
       - shfmt -w "{{.SCRIPT_PATH}}"
 
+  # Make a temporary file named according to the passed TEMPLATE variable and print the path passed to stdout
+  # Source: https://github.com/arduino/tooling-project-assets/blob/main/workflow-templates/assets/windows-task/Taskfile.yml
+  utility:mktemp-file:
+    vars:
+      RAW_PATH:
+        sh: mktemp --tmpdir "{{.TEMPLATE}}"
+    cmds:
+      - task: utility:normalize-path
+        vars:
+          RAW_PATH: "{{.RAW_PATH}}"
+
+  # Make a temporary folder named according to the passed TEMPLATE variable and print the path passed to stdout
+  # Source: https://github.com/arduino/tooling-project-assets/blob/main/workflow-templates/assets/windows-task/Taskfile.yml
+  utility:mktemp-folder:
+    vars:
+      RAW_PATH:
+        sh: mktemp --directory --tmpdir "{{.TEMPLATE}}"
+    cmds:
+      - task: utility:normalize-path
+        vars:
+          RAW_PATH: "{{.RAW_PATH}}"
+
+  # Print a normalized version of the path passed via the RAW_PATH variable to stdout
+  # Source: https://github.com/arduino/tooling-project-assets/blob/main/workflow-templates/assets/windows-task/Taskfile.yml
+  utility:normalize-path:
+    cmds:
+      - |
+        if [[ "{{.OS}}" == "Windows_NT" ]] && which cygpath &>/dev/null; then
+            # Even though the shell handles POSIX format absolute paths as expected, external applications do not.
+            # So paths passed to such applications must first be converted to Windows format.
+            cygpath -w "{{.RAW_PATH}}"
+        else
+          echo "{{.RAW_PATH}}"
+        fi
+
   # Source: https://github.com/arduino/tooling-project-assets/blob/main/workflow-templates/assets/check-mkdocs-task/Taskfile.yml
   website:check:
     desc: Check whether the MkDocs-based website will build