| 1 | import { identity } from '../util/identity';
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| 2 | /**
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| 3 | * Computes the average of a sequence of values from the sequence either from the sequence itself
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| 4 | * or from the selector function.
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| 5 | * @example
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| 6 | * // Using non chained version
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| 7 | * const result = average([1, 2, 3]);
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| 8 | * const result = Ix.Iterable.of(1, 2, 3).average();
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| 9 | * console.log(result);
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| 10 | * @param {Iterable<any>} source A sequence of values to calculate the average of.
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| 11 | * @param {function(x: any): number} [selector] A transform function to apply to each element.
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| 12 | * @returns {number} The average of the sequence of values.
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| 13 | */
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| 14 | export function average(source, selector = identity) {
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| 15 | let sum = 0;
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| 16 | let count = 0;
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| 17 | for (const item of source) {
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| 18 | sum += selector(item);
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| 19 | count++;
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| 20 | }
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| 21 | if (count === 0) {
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| 22 | throw new Error('Empty collection');
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| 23 | }
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| 24 | return sum / count;
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| 25 | }
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| 26 |
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| 27 | //# sourceMappingURL=average.mjs.map
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