| 1 | /**
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| 2 | * Creates a function that checks conditions one by one and runs the matching function.
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| 3 | *
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| 4 | * Each pair consists of a condition (predicate) and a function to run.
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| 5 | * The function goes through each condition in order until it finds one that's true.
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| 6 | * When it finds a true condition, it runs the corresponding function and returns its result.
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| 7 | * If none of the conditions are true, it returns undefined.
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| 8 | *
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| 9 | * @param {Array<Array>} pairs - Array of pairs. Each pair consists of a predicate function and a function to run.
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| 10 | * @returns {(...args: any[]) => unknown} A new composite function that checks conditions and runs the matching function.
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| 11 | * @example
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| 12 | *
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| 13 | * const func = cond([
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| 14 | * [matches({ a: 1 }), constant('matches A')],
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| 15 | * [conforms({ b: isNumber }), constant('matches B')],
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| 16 | * [stubTrue, constant('no match')]
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| 17 | * ]);
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| 18 | *
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| 19 | * func({ a: 1, b: 2 });
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| 20 | * // => 'matches A'
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| 21 | *
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| 22 | * func({ a: 0, b: 1 });
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| 23 | * // => 'matches B'
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| 24 | *
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| 25 | * func({ a: '1', b: '2' });
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| 26 | * // => 'no match'
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| 27 | */
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| 28 | declare function cond<R>(pairs: Array<[truthy: () => boolean, falsey: () => R]>): () => R;
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| 29 | /**
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| 30 | * Creates a function that checks conditions one by one and runs the matching function.
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| 31 | *
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| 32 | * Each pair consists of a condition (predicate) and a function to run.
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| 33 | * The function goes through each condition in order until it finds one that's true.
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| 34 | * When it finds a true condition, it runs the corresponding function and returns its result.
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| 35 | * If none of the conditions are true, it returns undefined.
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| 36 | *
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| 37 | * @param {Array<Array>} pairs - Array of pairs. Each pair consists of a predicate function and a function to run.
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| 38 | * @returns {(...args: any[]) => unknown} A new composite function that checks conditions and runs the matching function.
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| 39 | * @example
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| 40 | *
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| 41 | * const func = cond([
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| 42 | * [matches({ a: 1 }), constant('matches A')],
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| 43 | * [conforms({ b: isNumber }), constant('matches B')],
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| 44 | * [stubTrue, constant('no match')]
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| 45 | * ]);
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| 46 | *
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| 47 | * func({ a: 1, b: 2 });
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| 48 | * // => 'matches A'
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| 49 | *
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| 50 | * func({ a: 0, b: 1 });
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| 51 | * // => 'matches B'
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| 52 | *
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| 53 | * func({ a: '1', b: '2' });
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| 54 | * // => 'no match'
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| 55 | */
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| 56 | declare function cond<T, R>(pairs: Array<[truthy: (val: T) => boolean, falsey: (val: T) => R]>): (val: T) => R;
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| 57 |
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| 58 | export { cond };
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