How to mute those annoying react warnings during jest test runs

[mkondel]

Edit test/setup.ts to add global beforeAll() and afterAll() methods. Here is an example that worked for us:

// test/setup.ts
const originalError = console.error
const originalWarn = console.warn

beforeAll(() => {
  console.error = (msg) => !msg.toString()
    .includes("ReactDOM.render is no longer supported in React 18")
  console.warn = (msg) => !msg.toString()
    .includes("Please update the following components: Griddle")
})

afterAll(() => {
  console.error = originalError
  console.warn = originalWarn
})

export {} // so TS doesn't complain

Source from Stackoverflow