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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 | 5x 2x 3x 3x 1x 2x 3x 3x 2x | export function _instanceof(V, F) {
if (Object.prototype.toString.call(V) !== '[object Object]') {
return false
}
let O = F.prototype
if (Object.prototype.toString.call(O) !== '[object Object]') {
return false
}
while(true) {
V = Object.getPrototypeOf(V)
if (V === null) return false
if (V === O) return true
}
}
|