Object.assign side effect
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(() => {
const x = {
x: 'x',
}
const y = {
y: 'y'
}
console.log(`x:`, x)
console.log(`y:`, y)
console.log(`Object.assign(x, y):`, Object.assign(x, y))
// Object.assign will manipulate the original object.
console.log(`x:`, x)
})()
console.log(`========`)
;(() => {
const x = {
x: 'x',
}
const y = {
y: 'y'
}
// In order to not replace the any object.
console.log(`Object.assign({}, x, y):`, Object.assign({}, x, y))
console.log(`x:`, x)
})()
JavaScript
INFO