*.components.ts

Every exported interface or type alias is a component. Unexported ones are shapes the components use.

// types/body/body.components.ts
interface Vec3 {
    x: f64
    y: f64
    z: f64
}

/** Where the body is, and when that was sensed. */
export interface Pose {
    position: Vec3
    rotation: [f64, f64, f64, f64]
    sensed: f64
}

/** The last depth look, as points. */
export interface Cloud {
    points: Float32Array
    sensed: f64
}

The number types — f64, f32, u32, i32 — are ambient. No import.

Write	Means
`f64` `f32` `u32` `i32`	numbers (`number` is `f64`)
`string` `boolean`	text, a flag
`[f64, f64, f64]`	exactly that many
`T[]`	a list
`Record<string, T>`	a map
`Float64Array` `Float32Array` `Int32Array` `Uint32Array` `Uint8Array`	a large array, held as memory
`field?: T`	may be absent
`T \| null`	may be null

A file may import type a shape from another types/ file.