eyedropper.d.ts

eyedropper.d.ts

interface ColorSelectionOptions {
  signal?: AbortSignal
}

interface ColorSelectionResult {
  sRGBHex: string
}

interface EyeDropper {
  open: (options?: ColorSelectionOptions) => Promise<ColorSelectionResult>
}

interface EyeDropperConstructor {
  new (): EyeDropper
}

interface Window {
  EyeDropper?: EyeDropperConstructor | undefined
}

just a note that this is typed incorrectly - EyeDropper should not extend EyeDropperConstructor.
that allows you to do some incorrect things:

EyeDropper.open()

const ed = new EyeDropper()
const ed2 = new ed()

instead, Window.EyeDropper should be set to EyeDropperConstructor.

interface ColorSelectionOptions {
  signal?: AbortSignal
}

interface ColorSelectionResult {
  sRGBHex: string
}

interface EyeDropper {
  open: (options?: ColorSelectionOptions) => Promise<ColorSelectionResult>
}

interface EyeDropperConstructor {
  new (): EyeDropper
}

interface Window {
  EyeDropper?: EyeDropperConstructor | undefined
}

(i've also removed the default parameter for options, as they shouldn't be provided when defining a type, and marked signal as optional)

Thanks! I've updated the gist to reflect your changes. Hopefully we'll get official support for this soon.