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TypeScript 3.9 | Advanced Types: Extracts the first param type of a given tuple
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| type Head<T extends any[]> = | |
| T extends [any, ...any[]] | |
| ? T[0] | |
| : never | |
| type Type1 = Head<[name: string, age: number, single: boolean]> // string | |
| // https://medium.com/free-code-camp/typescript-curry-ramda-types-f747e99744ab | |
| // https://github.com/millsp/medium/blob/master/types-curry-ramda/src/index.ts |
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