TypeScript 2.6
只写引用未使用
function f(n: number) {
n = 0;
}
class C {
private m: number;
constructor() {
this.m = 0;
}
}function f() {
f(); // Error: 'f' is declared but its value is never read
}环境上下文中的导出赋值中禁止使用任意表达式
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