74 lines
1.9 KiB
JavaScript
74 lines
1.9 KiB
JavaScript
'use strict';
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const Table = require('cli-table');
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const filesize = require('filesize');
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const chalk = require('chalk');
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const join = require('path').join;
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const fs = require('fs');
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const prevBuildResults = require('./results.json');
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const currentBuildResults = {
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// Mutated during the build.
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bundleSizes: Object.assign({}, prevBuildResults.bundleSizes),
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};
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function saveResults() {
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fs.writeFileSync(
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join('scripts', 'rollup', 'results.json'),
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JSON.stringify(currentBuildResults, null, 2)
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);
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}
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function percentChange(prev, current) {
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const change = Math.floor((current - prev) / prev * 100);
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if (change > 0) {
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return chalk.red.bold(`+${change} %`);
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} else if (change <= 0) {
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return chalk.green.bold(change + ' %');
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}
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}
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function printResults() {
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const table = new Table({
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head: [
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chalk.gray.yellow('Bundle'),
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chalk.gray.yellow('Prev Size'),
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chalk.gray.yellow('Current Size'),
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chalk.gray.yellow('Diff'),
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chalk.gray.yellow('Prev Gzip'),
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chalk.gray.yellow('Current Gzip'),
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chalk.gray.yellow('Diff'),
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],
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});
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Object.keys(currentBuildResults.bundleSizes).forEach(key => {
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const result = currentBuildResults.bundleSizes[key];
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const prev = prevBuildResults.bundleSizes[key];
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if (result === prev) {
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// We didn't rebuild this bundle.
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return;
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}
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const size = result.size;
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const gzip = result.gzip;
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let prevSize = prev ? prev.size : 0;
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let prevGzip = prev ? prev.gzip : 0;
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table.push([
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chalk.white.bold(key),
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chalk.gray.bold(filesize(prevSize)),
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chalk.white.bold(filesize(size)),
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percentChange(prevSize, size),
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chalk.gray.bold(filesize(prevGzip)),
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chalk.white.bold(filesize(gzip)),
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percentChange(prevGzip, gzip),
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]);
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});
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return table.toString();
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}
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module.exports = {
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printResults,
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saveResults,
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currentBuildResults,
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};
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