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ES2018(ES9) 测试题
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const obj = {
x:1,
y:2,
a:1,
b:2,
c:3
}
测试:
fn1(obj)
和 fn2(obj)
log一样的数据, 求解
// some code about B & C
class A extends (B = C) {} // 1
class A extends (B || C) {} // 2
class A extends (B + C) {} // 3
class A extends B() {} // 4
class A extends (B, C) {} // 5
class A extends ({}) {} // 6
class A extends B.C {} // 7
class A extends (new B()) {} // 8
class A extends (B++) {} // 9
async function f() {
class A extends (await B) {} // 10
}
function* f() {
class A extends (yield B) {} // 11
}