[英]tslint prefer-const warning when using dot notation
interface obj {
bar: string
}
function randomFunction() {
let foo: obj = { bar: "" }
foo.bar = "hip"
}
let snack: obj = { bar: "" }
snack.bar = "hop"
I get this warning from tslint: 我从tslint得到这个警告:
Identifier 'foo' is never reassigned;
标识符'foo'永远不会被重新分配; use 'const' instead of 'let'.
使用'const'而不是'let'。 (prefer-const)
(比较喜欢const的)
Funny though I don't get this warning in the second case with the variable snack
. 虽然我没有在第二种情况下用变量
snack
得到这个警告,但很有趣。
I can get rid of this warning (which clutters my console when transcompiling) with /* tslint:disable: prefer-const */
我可以用
/* tslint:disable: prefer-const */
去除这个警告(在转换时使我的控制台变得混乱) /* tslint:disable: prefer-const */
I haven't found any bug report on the tslint project . 我没有找到关于tslint项目的任何错误报告。 Since I'm new to typescript I'm wondering: Do I something wrong here?
由于我是打字稿的新手,我想知道:我这里有什么问题吗?
tslint is asking you to change let
to const
because the identifier foo
is not reassigned. tslint要求您将
let
更改为const
因为未重新分配标识符foo
。
The error can be removed by instead writing const
: 可以通过编写
const
来删除错误:
const foo: obj = { bar: "" };
foo.bar = "hip";
Note that the const
modifier just means you can't reassign the identifier: 请注意,
const
修饰符只是意味着您无法重新分配标识符:
const foo = { bar: "" };
foo = { bar: "" }; // error
It doesn't make the object itself readonly. 它不会使对象本身只读。
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