Using lifecycle hooks

How do I create a plugin which uses the

build:before

build:before

hook? Adding the hook, I get

Vue: Object literal may only specify known properties, and 'build:before' does not exist in type 'Partial<RuntimeNuxtHooks>'.

Vue: Object literal may only specify known properties, and 'build:before' does not exist in type 'Partial<RuntimeNuxtHooks>'.

The plugin is also not even loaded

Using lifecycle hooks - Nuxt