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What are Single Executable Applications (SEA) in Node.js?

Q: What are Single Executable Applications (SEA) in Node.js?

**TL;DR.** A **Single Executable Application** bundles your app's JavaScript **into a copy of the Node binary**, producing **one self-contained file** you can ship to users who don't have Node installed. You generate a SEA "blob" from a config, then inject it into the executable with the postject tool. bundle.js node binary <text class='d-text' x='267' y='86' text-anchor

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Understand the problem

Bundling a Node app + runtime into one self-contained binary.

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Building a SEA

# 1) config points at your bundled entry
echo '{ "main": "app.js", "output": "sea-prep.blob" }' > sea-config.json
node --experimental-sea-config sea-config.json

# 2) copy node, inject the blob
cp $(command -v node) app
npx postject app NODE_SEA_BLOB sea-prep.blob \
  --sentinel-fuse NODE_SEA_FUSE_...

./app    # runs without a separate Node install

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