Task: Write JSON to Disk (Binary)

n8n workflow:
{"nodes":[{"name":"Write Binary File","type":"n8n-nodes-base.writeBinaryFile","position":[800,350],"parameters":{"fileName":"test.json"},"typeVersion":1},{"name":"Make Binary","type":"n8n-nodes-base.function","position":[600,350],"parameters":{"functionCode":"items[0].binary = {\n  data: {\n    data: new Buffer(JSON.stringify(items[0].json, null, 2)).toString('base64')\n  }\n};\nreturn items;"},"typeVersion":1},{"name":"Create Example Data","type":"n8n-nodes-base.function","position":[390,350],"parameters":{"functionCode":"items[0].json = {\n  \"text\": \"asdf\",\n  \"number\": 1\n};\nreturn items;"},"typeVersion":1}],"connections":{"Make Binary":{"main":[[{"node":"Write Binary File","type":"main","index":0}]]},"Create Example Data":{"main":[[{"node":"Make Binary","type":"main","index":0}]]}}}