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Updated Breaking Changes (markdown)

Daniel Rosenwasser
2022-05-02 15:59:26 -07:00
parent 5e7a57b99c
commit e52f75a5ae
1 changed files with 4 additions and 1 deletions
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5
Breaking-Changes.md

@@ -40,12 +40,13 @@ function foo<T extends {}>(x: T) {
}
```
This behavior can come up in calls to
This behavior can come up in calls to `Object.keys`:
```ts
function keysEqual<T>(x: T, y: T) {
const xKeys = Object.keys(x);
const yKeys = Object.keys(y);
if (xKeys.length !== yKeys.length) return false;
for (let i = 0; i < xKeys.length; i++) {
if (xKeys[i] !== yKeys[i]) return false;
@@ -64,6 +65,8 @@ No overload matches this call.
Argument of type 'T' is not assignable to parameter of type 'object'.
```
Appropriately performing runtime checks to narrow the type, or using a type-assertion, may be the best way to deal with these new errors.
For more information, take a look at [the breaking PR here](https://github.com/microsoft/TypeScript/pull/48366).
# TypeScript 4.7