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import { append } from './append.js'
test('happy', () => {  expect(append('tests', [ 'write', 'more' ])).toEqual([    'write',    'more',    'tests',  ])})
test('append to empty array', () => {  expect(append('tests')([])).toEqual([ 'tests' ])})
test('with strings', () => {  expect(append('o', 'fo')).toEqual([ 'f', 'o', 'o' ])})