intersection syntax

Why is this compiling

const FOOBAR = type("('foo' | 'bar')", "&", {__brand: "'FOOBAR'"}).pipe((x, ctx) => {
    return x 
})
type TFOOBAR = typeof FOOBAR.infer

const FOOBAR = type("('foo' | 'bar')", "&", {__brand: "'FOOBAR'"}).pipe((x, ctx) => {
    return x 
})
type TFOOBAR = typeof FOOBAR.infer

but this not

const BARFOO = type(`('foo' | 'bar') & {'__brand': "'BARFOO'"}`).pipe((x, ctx) => {
    return x 
})
type TBARFOO = typeof BARFOO.infer

const BARFOO = type(`('foo' | 'bar') & {'__brand': "'BARFOO'"}`).pipe((x, ctx) => {
    return x 
})
type TBARFOO = typeof BARFOO.infer