Type 'false' cannot be used as an index type?

[fallow basalt]

I have an object where one of the keys is false.
I want to access it via myObj[false] which is valid JS, but typescript doesn't like it and gives me the error

Type 'false' cannot be used as an index type

[boreal mural]

Hailwood#7433

Playground Link

Preview:```ts
const items = {
false: "false",
yes: "y",
no: "n",
}

console.log(items[false])```

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[knotty jackal]

{ false: "false" } is equivalent to { "false": "false" }; object keys are only strings, numbers, or symbols

if that works at runtime, then it works because of a conversion, which TS generally disallows even though "it works at runtime", as such code is usually not intentional

[fallow basalt]

Ah right! Thanks