83 lines
2.7 KiB
TypeScript
83 lines
2.7 KiB
TypeScript
/* eslint-disable no-console */
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import type { Metafile } from 'esbuild';
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import { readFile } from 'fs/promises';
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import { globby } from 'globby';
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import { markdownTable } from 'markdown-table';
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export const getSizes = (metafile: Metafile) => {
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const { outputs } = metafile;
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const sizes = Object.keys(outputs)
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.filter((key) => key.endsWith('js') && !key.includes('chunk'))
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.map((key) => {
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const { bytes } = outputs[key];
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return [key.replace('dist/', ''), bytes];
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});
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return sizes;
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};
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const readStats = async (path: string): Promise<Record<string, number>> => {
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const files = await globby(path);
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const contents = await Promise.all(files.map((file) => readFile(file, 'utf-8')));
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const sizes = contents.flatMap((content) => getSizes(JSON.parse(content)));
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return Object.fromEntries(sizes);
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};
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const formatBytes = (bytes: number): string => {
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if (bytes == 0) {
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return '0 Bytes';
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}
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const base = 1024;
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const decimals = 2;
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const sizes = ['Bytes', 'KB', 'MB', 'GB', 'TB', 'PB', 'EB', 'ZB', 'YB'];
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const i = Math.floor(Math.log(bytes) / Math.log(base));
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return parseFloat((bytes / Math.pow(base, i)).toFixed(decimals)) + ' ' + sizes[i];
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};
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const formatSize = (bytes: number): string => {
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const formatted = formatBytes(bytes);
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if (formatted.includes('Bytes')) {
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return formatted;
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}
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return `${formatBytes(bytes)} (${bytes} Bytes)`;
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};
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const percentageDifference = (oldValue: number, newValue: number): string => {
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const difference = Math.abs(newValue - oldValue);
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const avg = (newValue + oldValue) / 2;
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const percentage = (difference / avg) * 100;
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const roundedPercentage = percentage.toFixed(2); // Round to two decimal places
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if (roundedPercentage === '0.00') {
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return '0.00%';
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}
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const sign = newValue > oldValue ? '+' : '-';
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return `${sign}${roundedPercentage}%`;
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};
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const main = async () => {
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const oldStats = await readStats('./cypress/snapshots/stats/base/**/*.json');
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const newStats = await readStats('./cypress/snapshots/stats/head/**/*.json');
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const diff = Object.entries(newStats)
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.filter(([, value]) => value > 2048)
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.map(([key, value]) => {
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const oldValue = oldStats[key];
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const delta = value - oldValue;
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const output = [
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key,
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formatSize(oldValue),
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formatSize(value),
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formatSize(delta),
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percentageDifference(oldValue, value),
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];
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return output;
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})
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.filter(([, , , delta]) => delta !== '0 Bytes');
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if (diff.length === 0) {
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console.log('No changes in bundle sizes');
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return;
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}
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console.log(
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markdownTable([['File', 'Previous Size', 'New Size', 'Difference', '% Change'], ...diff])
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);
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};
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void main().catch((e) => console.error(e));
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