示例

Parse options, custom coercion, and command arguments in commander 2.20.3

sha256:2e8a1edc65b303a96fbfa56040792224e5f76b2ad3fb00e36a9e4661440c3565

MIT-0

执行证据

声明的环境与签名的运行分开呈现，你可以看到这个样本究竟运行了什么、在哪里运行。

声明的环境 linux 24 · ubuntu · glibc 2.39 x64 npm

环境	契约	阶段	运行日期
node 22 · linux alpine/x64 · docker ed25519:c1973797be207ac4	PASS	compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · node-typescript@1node:22-alpine@sha256:c610fcdfb1d5…	2026-08-27

HOW

目标: Parse options, custom coercion, and command arguments in commander 2.20.3
包: commander 2.20.3
符号: Command.action
Command.option
Command.parse
创建时间: 2026-08-27T23:41:56Z

Defining an option with a required argument and default value parses passed CLI arguments into camelCase properties on the Command instance and populates opts().
Defining a negated boolean option with --no-* initializes its default property value to true and flips it to false when the flag is present.
Passing a custom coercion function to Command.option transforms option string arguments before storing them on the command instance.
Passing a custom collector function to Command.option accumulates multiple repeated option occurrences into an array.
Command.action receives parsed positional arguments and the subcommand instance when a registered subcommand is invoked via Command.parse.
Command.action with variadic argument syntax captures all remaining positional arguments into an array.

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