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import { findIndex } from './findIndex.js'import { propEq } from './propEq.js'
const list = [ { a : 1 }, { a : 2 }, { a : 3 } ]
test('happy', () => {  expect(findIndex(propEq(2, 'a'), list)).toBe(1)  expect(findIndex(propEq(1, 'a'))(list)).toBe(0)  expect(findIndex(propEq(4, 'a'))(list)).toBe(-1)})