1：Install n8n using npm

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npm install n8n -g

2：When you are ready to test your node, publish it locally

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npm run build
npm link

3：Install the node into your local n8n instance

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# In the nodes directory within your n8n installation
# node-package-name is the name from the package.json
npm link <node-package-name>

Start n8n

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n8n start

n8n 官方文档页面