Azure DevOps extension: Use packaged node_modules instead of global node modules

I am developing a custom pipeline task for Azure DevOps to extend commit lint's functionality. All source files (and node modules) have been packaged inside the .vsix file. However when running the task in a pipeline it returns the following error as it is looking in the global node_modules.

My question is: How can I ensure the extension searches for the dependency locally not the global directory, also I'm not sure if the error lies in vss-extension.json or the file that is importing the package.

The error:

##[error]Cannot find module "/usr/local/lib/node_modules/@commitlint/config-conventional/lib/index.js" from "/home/vsts/work/1/s"

The files section of vss-extension.json

"files": [
    {
      "path": "BuildTasks/CommitCheck"
    },
    {
      "path": "BuildTasks/CommitCheck/v1/node_modules",
      "packagePath": "BuildTasks/CommitCheck/v1/node_modules",
      "addressable": true
    }
  ],

The file that is causing the error to occur:

export const configuration = {
    extends: ['@commitlint/config-conventional/lib/index.js'],
    parserPreset: {
        parserOpts: {
            headerPattern: /^(chore|fix|feat|docs|ci)\((\w+-?[0-9]*)\): (\w[^\n\s]+ [^\n]+)/,
            headerCorrespondence: ['type', 'ticket', 'subject'],
        },
    },
    rules: {
        'subject-case': [0, 'never', 'subject-case'],
        'body-max-line-length': [0, 'always', 1000],
        'header-max-length': [0, 'always', 200],
    },
}