Mock console.warn console.log console.error

mock-console.ts

const mockedMethods = ['log', 'warn', 'error']
export const { originalConsoleFuncs, consoleMessages } = mockedMethods.reduce(
  (acc: any, method: any) => {
    acc.originalConsoleFuncs[method] = console[method].bind(console)
    acc.consoleMessages[method] = []

    return acc
  },
  {
    consoleMessages: {},
    originalConsoleFuncs: {}
  }
)

export const clearConsole = () =>
  mockedMethods.forEach(method => {
    consoleMessages[method] = []
  })

export const mockConsole = (callOriginals?: boolean) => {
  const createMockConsoleFunc = (method: any) => {
    console[method] = (...args: any[]) => {
      consoleMessages[method].push(args)
      if (callOriginals) return originalConsoleFuncs[method](...args)
    }
  }

  const deleteMockConsoleFunc = (method: any) => {
    console[method] = originalConsoleFuncs[method]
    consoleMessages[method] = []
  }

  beforeEach(() => {
    mockedMethods.forEach((method: any) => {
      createMockConsoleFunc(method)
    })
  })

  afterEach(() => {
    mockedMethods.forEach((method: any) => {
      deleteMockConsoleFunc(method)
    })
  })
}