mirror of
https://github.com/angular/angular
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28 lines
966 B
TypeScript
28 lines
966 B
TypeScript
/**
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* @license
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* Copyright Google Inc. All Rights Reserved.
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*
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* Use of this source code is governed by an MIT-style license that can be
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* found in the LICENSE file at https://angular.io/license
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*/
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import {MeasureValues} from '../measure_values';
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import {Statistic} from '../statistic';
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export function formatNum(n: number) {
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return n.toFixed(2);
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}
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export function sortedProps(obj: {[key: string]: any}) {
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return Object.keys(obj).sort();
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}
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export function formatStats(validSamples: MeasureValues[], metricName: string): string {
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const samples = validSamples.map(measureValues => measureValues.values[metricName]);
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const mean = Statistic.calculateMean(samples);
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const cv = Statistic.calculateCoefficientOfVariation(samples, mean);
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const formattedMean = formatNum(mean);
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// Note: Don't use the unicode character for +- as it might cause
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// hickups for consoles...
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return isNaN(cv) ? formattedMean : `${formattedMean}+-${Math.floor(cv)}%`;
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}
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