64ff195426
* Set-only accessors spread to undefined
Previously they were skipped. The runtime behaviour is to create a
property of type undefined, unlike (for example) spreading numbers or
other primitives. So now spreading a set-only accessor creates a
property of type undefined:
```ts
const o: { foo: undefined } = { ...{ set foo(v: number) { } } }
```
Notably, `o.foo: undefined` not `number`.
Fixes #26337
* Fix isSpreadableProperty oversimplification
5 lines
199 B
TypeScript
5 lines
199 B
TypeScript
// @strict: true
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// @target: esnext
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const o1: { foo: number, bar: undefined } = { foo: 1, ... { set bar(_v: number) { } } }
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const o2: { foo: undefined } = { foo: 1, ... { set foo(_v: number) { } } }
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