swc/crates/swc_ecma_parser/tests/tsc/emitArrowFunctionThisCapturing.ts

// @target:es5
var f1 = () => {
    this.age = 10
};

var f2 = (x: string) => {
    this.name = x
}

function foo(func: () => boolean) { }
foo(() => {
    this.age = 100;
    return true;
});