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chore: write metrics to disk for better diffing

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Daniel Roe 2025-01-21 13:25:11 +00:00
parent d86acf5795
commit c5c6b8105c
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GPG Key ID: 3714AB03996F442B
2 changed files with 20 additions and 2 deletions
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18
debug/plugins/timings-babel.mjs
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@ -1,8 +1,12 @@
// @ts-check
import { fileURLToPath } from 'node:url'
import { declare } from '@babel/helper-plugin-utils'
import { types as t } from '@babel/core'
const metricsPath = fileURLToPath(new URL('../../debug-timings.json', import.meta.url))
// inlined from https://github.com/danielroe/errx
function captureStackTrace () {
const IS_ABSOLUTE_RE = /^[/\\](?![/\\])|^[/\\]{2}(?!\.)|^[a-z]:[/\\]/i
@ -45,7 +49,9 @@ function captureStackTrace () {
return trace
}
export const leading = `
import { writeFileSync as ____writeFileSync } from 'node:fs'
const ___captureStackTrace = ${captureStackTrace.toString()};
globalThis.___calls ||= {};
globalThis.___timings ||= {};
@ -55,6 +61,16 @@ function onExit () {
if (globalThis.___logged) { return }
globalThis.___logged = true
// eslint-disable-next-line no-undef
____writeFileSync(metricsPath, JSON.stringify(Object.fromEntries(Object.entries(globalThis.___timings).map(([name, time]) => [
name,
{
time: Number(Number(time).toFixed(2)),
calls: globalThis.___calls[name],
callers: globalThis.___callers[name] ? Object.fromEntries(Object.entries(globalThis.___callers[name]).map(([name, count]) => [name.trim(), count]).sort((a, b) => typeof b[0] === 'string' && typeof a[0] === 'string' ? a[0].localeCompare(b[0]) : 0)) : undefined,
},
]).sort((a, b) => typeof b[0] === 'string' && typeof a[0] === 'string' ? a[0].localeCompare(b[0]) : 0)), null, 2))
// worst by total time
const timings = Object.entries(globalThis.___timings)
@ -93,7 +109,7 @@ function onExit () {
console.table(topFunctionsAverageTime)
}
export const trailing = `process.on("exit", ${onExit.toString()})`
export const trailing = `process.on("exit", ${onExit.toString().replace('metricsPath', JSON.stringify(metricsPath))})`
/** @param {string} functionName */
export function generateInitCode (functionName) {

4
debug/plugins/timings-unbuild.ts
View File

@ -15,6 +15,8 @@ declare global {
var ___calls: Record<string, number>
// eslint-disable-next-line no-var
var ___callers: Record<string, number>
// eslint-disable-next-line no-var
var ____writeFileSync: typeof import('fs').writeFileSync
}
export function AnnotateFunctionTimingsPlugin () {
@ -29,7 +31,7 @@ export function AnnotateFunctionTimingsPlugin () {
walk(ast as Node, {
enter (node) {
if (node.type === 'FunctionDeclaration' && node.id && node.id.name) {
const functionName = node.id.name ? `${node.id.name} (${id.match(/\/packages\/([^/]+)\//)?.[1]})` : ''
const functionName = node.id.name ? `${node.id.name} (${id.match(/[\\/]packages[\\/]([^/]+)[\\/]/)?.[1]})` : ''
const start = (node.body as Node & { start: number, end: number }).start
const end = (node.body as Node & { start: number, end: number }).end