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Add a script to easily test Sucrase perf on a project (#341)
This should make it easier to benchmark and profile real-world code.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,66 @@ | ||
| #!/usr/bin/env node | ||
| /* eslint-disable no-console */ | ||
| import parseArgs from "yargs-parser"; | ||
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| // @ts-ignore: May not be built, just ignore for now. | ||
| import * as sucrase from "../dist/index"; // eslint-disable-line import/no-unresolved | ||
| import {FileInfo, loadProjectFiles} from "./loadProjectFiles"; | ||
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| async function main(): Promise<void> { | ||
| const args = parseArgs(process.argv.slice(2), {boolean: ["profile"]}); | ||
| const projectPath = args._[0]; | ||
| const shouldProfile = args.profile; | ||
| const numTimes = args.times || 1; | ||
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| const projectFiles = await loadProjectFiles(projectPath); | ||
| if (numTimes === 1) { | ||
| console.log(`Running Sucrase on ${projectPath}`); | ||
| } else { | ||
| console.log(`Running Sucrase ${numTimes} times on ${projectPath}`); | ||
| } | ||
| const totalLines = projectFiles | ||
| .map(({code}) => code.split("\n").length) | ||
| .reduce((a, b) => a + b, 0); | ||
| console.log(`Found ${projectFiles.length} files with ${totalLines} lines`); | ||
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| if (shouldProfile) { | ||
| console.log(`Make sure you have Chrome DevTools for Node open.`); | ||
| // tslint:disable-next-line no-any | ||
| (console as any).profile(`Sucrase ${projectPath}`); | ||
| for (let i = 0; i < numTimes; i++) { | ||
| for (const fileInfo of projectFiles) { | ||
| runTransform(fileInfo); | ||
| } | ||
| } | ||
| // tslint:disable-next-line no-any | ||
| (console as any).profileEnd(`Sucrase ${projectPath}`); | ||
| } else { | ||
| const startTime = process.hrtime(); | ||
| for (let i = 0; i < numTimes; i++) { | ||
| for (const fileInfo of projectFiles) { | ||
| runTransform(fileInfo); | ||
| } | ||
| } | ||
| const totalTime = process.hrtime(startTime); | ||
| const timeSeconds = totalTime[0] + totalTime[1] / 1e9; | ||
| console.log(`Time taken: ${Math.round(timeSeconds * 1000) / 1000}s`); | ||
| console.log(`Speed: ${Math.round((totalLines * numTimes) / timeSeconds)} lines per second`); | ||
| } | ||
| } | ||
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| function runTransform({code, path}: FileInfo): void { | ||
| if (path.endsWith(".js") || path.endsWith(".jsx")) { | ||
| sucrase.transform(code, {transforms: ["jsx", "imports", "flow"], filePath: path}); | ||
| } else if (path.endsWith(".ts")) { | ||
| sucrase.transform(code, {transforms: ["imports", "typescript"], filePath: path}); | ||
| } else if (path.endsWith(".tsx")) { | ||
| sucrase.transform(code, {transforms: ["jsx", "imports", "typescript"], filePath: path}); | ||
| } else { | ||
| throw new Error(`Unrecognized file type: ${path}`); | ||
| } | ||
| } | ||
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| main().catch((e) => { | ||
| console.error(e); | ||
| process.exitCode = 1; | ||
| }); |
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