When working with TypeScript, I have a union literal type named Color defined as:
export type Color =
| 'red'
| 'green'
| 'blue'
| 'teal'
| 'purple'
My challenge is to define the type of a dictionary where some of the keys are from the values of Color, and the values are strings.
For example:
const COLOR_MAP = {
red: 'Cool',
green: 'Not so cool'
}
I need to create a type for COLOR_MAP so that I can access its values using a string that matches the type Color.
To create a comprehensive map, utilize either Record<Color, string> or { [key in Color]: string }.
For a non-comprehensive map, consider using
Partial<Record<Color, string>>{ [key in Color]?: string }.
If you need a specific subset of the union that is predetermined at compile-time, use Extract:
Record<Extract<Color, 'red' | 'teal'>, string>
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