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    Neon CLI command: dev

    Run Neon Functions locally with a dev server

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    The dev command runs Neon Functions locally with a dev server and hot reload. Serve one function from its entry module, or every function declared in your neon.ts policy.

    Usage

    neon dev [--source <path>] [options]

    Options

    OptionDescriptionTypeDefaultRequired
    --portPort to listen on (single-function mode only, with --source). Fails if taken. Without it (and without a PORT env var) a free port is chosen automatically.number—No
    --sourcePath to a single function entry module. Omit to serve every function declared in neon.ts.string—No

    Examples

    Serve one function on a free port with hot reload:

    neon dev --source ./functions/hello.ts

    Serve every function declared in neon.ts (one dev server each):

    neon dev

    Serve one function on an explicit port (fails if the port is taken):

    neon dev --source ./functions/hello.ts --port 3000
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