vitest/docs/config/provide.md

title	outline
provide | Config	deep

provide

• Type: Partial<ProvidedContext>

Define values that can be accessed inside your tests using inject method.

:::code-group

import { defineConfig } from 'vitest/config'

export default defineConfig({
  test: {
    provide: {
      API_KEY: '123',
    },
  },
})

import { expect, inject, test } from 'vitest'

test('api key is defined', () => {
  expect(inject('API_KEY')).toBe('123')
})

:::

::: warning Properties have to be strings and values need to be serializable because this object will be transferred between different processes. :::

::: tip If you are using TypeScript, you will need to augment ProvidedContext type for type safe access:

declare module 'vitest' {
  export interface ProvidedContext {
    API_KEY: string
  }
}

// mark this file as a module so augmentation works correctly
export {}

:::