Fix build

packages/core/scripts/build.js

       external: ['react', 'react-dom'],
     })
 
-    fs.copyFile('./README.md', './dist/README.md', (err) => {
-      if (err) throw err
-    })
+    for (const file of ['package.json', 'README.md']) {
+      fs.copyFile(file, `dist/${file}'`, fs.constants.COPYFILE_EXCL, (err) => {
+        if (err) throw err
+      })
+    }
 
     console.log(`✔ ${name}: Built package.`)
   } catch (e) {

packages/tldraw/scripts/build.js

     fs.mkdirSync('./dist')
   }
 
-  fs.copyFileSync('package.json', 'dist/package.json', (err) => {
-    if (err) throw err
-  })
-
-  fs.copyFileSync('README.md', 'dist/README.md', (err) => {
-    if (err) throw err
-  })
-
   try {
     esbuild.buildSync({
       entryPoints: ['./src/index.ts'],
       external: ['react', 'react-dom'],
     })
 
+    for (const file of ['package.json', 'README.md']) {
+      fs.copyFile(file, `dist/${file}'`, fs.constants.COPYFILE_EXCL, (err) => {
+        if (err) throw err
+      })
+    }
+
     console.log(`✔ ${name}: Built package.`)
   } catch (e) {
     console.log(`× ${name}: Build failed due to an error.`)

packages/tldraw/scripts/pre-dev.js

 /* eslint-disable */
 const fs = require('fs')
-const path = require('path')
 const esbuild = require('esbuild')
 
 async function main() {