snapshot of https://github.com/tldraw/tldraw.git (main, 2026-09-23; blobs > 131072B omitted)

internal/scripts/check-worker-bundle.ts

@@ -0,0 +1,65 @@
+import { existsSync, readFileSync, rmSync } from 'fs'
+import { resolve } from 'path'
+import kleur from 'kleur'
+import minimist from 'minimist'
+import { exec } from './lib/exec'
+import { WORKER_EXTERNAL_DEPS } from './lib/worker-externals'
+
+const args = minimist(process.argv.slice(2))
+const sizeLimit = Number(args['size-limit-bytes'])
+if (!isFinite(sizeLimit) || sizeLimit < 1) {
+	console.error(
+		'Invalid usage. Usage: yarn tsx check-worker-bundle.ts --size-limit-bytes <size> --entry <entry>'
+	)
+	process.exit(1)
+}
+
+const entry = args['entry']
+if (!existsSync(entry)) {
+	console.error('Entry file does not exist:', entry)
+	process.exit(1)
+}
+
+const bundleMetaFileName = '.bundle-meta.json'
+
+interface Meta {
+	outputs: {
+		[fileName: string]: {
+			bytes: number
+		}
+	}
+}
+
+async function checkBundleSize() {
+	rmSync(bundleMetaFileName, { force: true })
+
+	console.log('checking bundle size')
+	await exec('yarn', [
+		'esbuild',
+		entry,
+		'--bundle',
+		'--outfile=/dev/null',
+		'--minify',
+		'--metafile=' + bundleMetaFileName,
+		...WORKER_EXTERNAL_DEPS.map((dep) => '--external:' + dep),
+	])
+
+	console.log(kleur.cyan().bold('Checking bundle size'), 'of', resolve(entry) + '\n')
+
+	const meta = JSON.parse(readFileSync(bundleMetaFileName).toString()) as Meta
+	const totalSize = Object.values(meta.outputs).reduce((acc, output) => acc + output.bytes, 0)
+	if (totalSize === 0) {
+		throw new Error('Invalid bundle meta in ' + process.cwd() + '/' + bundleMetaFileName)
+	}
+
+	if (totalSize > sizeLimit) {
+		console.error(
+			`${kleur.red().bold('ERROR')} Bundle size exceeds limit: ${totalSize} > ${sizeLimit}`
+		)
+		process.exit(1)
+	}
+
+	console.log(`Bundle size is within limit: ${totalSize} < ${sizeLimit}`)
+}
+
+checkBundleSize()