prefer-implicit-return

Prefer expression bodies for lambdas that only return one value

A lambda block containing only return value adds a statement around its result.
Instead, you SHOULD use value as the lambda body directly.

- Category: style
- Level: warning
- Fix: suggestion
- Scope: module

Reported

function double(values: int32[]): int32[] {
    return values.map((value) => {
        return value * 2;
    });
}
Accepted

function double(values: int32[]): int32[] {
    return values.map((value) => value * 2);
}
Prior art

- ESLint · arrow-body-style

language/linter/src/rules/style/preferimplicitreturn.rs:8