Hi, I have reported an error on the babel issue tracker at https://phabricator.babeljs.io/T7457

but it might also be, that this is an issue on node v4?

The issue described does ONLY occur an the arm64 architecture (I am also using the linoaro dev cluster).

In a short:

running:

mkdir -p /tmp/babel-test

cd /tmp/babel-test

npm install babel-cli babel-preset-es2015 --save-dev

./node_modules/.bin/babel ./node_modules/babel-polyfill/dist/polyfill.js -d lib --presets es2015 --no-babelrc

will return

[BABEL] Note: The code generator has deoptimised the styling of "./node_modules/babel-polyfill/dist/polyfill.js" as it exceeds the max of "100KB".
TypeError: ./node_modules/babel-polyfill/dist/polyfill.js: Cannot read property 'compact' of undefined
at Function.space (/tmp/babel-test/node_modules/babel-generator/lib/buffer.js:139:20)
at Function.ObjectExpression (/tmp/babel-test/node_modules/babel-generator/lib/generators/types.js:62:10)
at /tmp/babel-test/node_modules/babel-generator/lib/printer.js:113:24
at Generator.withSource (/tmp/babel-test/node_modules/babel-generator/lib/buffer.js:293:39)
at Generator.print (/tmp/babel-test/node_modules/babel-generator/lib/printer.js:112:10)
at Generator.printJoin (/tmp/babel-test/node_modules/babel-generator/lib/printer.js:197:12)
at Generator.printList (/tmp/babel-test/node_modules/babel-generator/lib/printer.js:261:17)
at Generator.CallExpression (/tmp/babel-test/node_modules/babel-generator/lib/generators/expressions.js:144:8)
at /tmp/babel-test/node_modules/babel-generator/lib/printer.js:113:24
at Generator.withSource (/tmp/babel-test/node_modules/babel-generator/lib/buffer.js:293:39)

If I use node v6.2.2 arm64 and run the same command, the result is:

[BABEL] Note: The code generator has deoptimised the styling of "./node_modules/babel-polyfill/dist/polyfill.js" as it exceeds the max of "100KB".
./node_modules/babel-polyfill/dist/polyfill.js -> lib/node_modules/babel-polyfill/dist/polyfill.js

Seems to be a kind of memory leak ?