Is it possible for absolute paths to autocomplete in Visual Studio Code (VSCode)?

VS Code does not support using NODE_PATH for intellisense. To achieve what you want, create a jsconfig.json file at the root of your project with the contents:

{
    "compilerOptions": {
        "target": "ES6",
        "baseUrl": "./src"
    },
    "exclude": [
        "node_modules",
        "**/node_modules/*"
    ]
}

The important setting is baseUrl. It tells VS Code to resolve non-relative paths relative to the ./src folder

After configuring jsconfig and baseUrl, you can also set "javascript.preferences.importModuleSpecifier": "non-relative" in VS Code to specify that VS Code should always try to use paths to use the baseUrl