Warn when package.json contains an invalid "type" value

What is the problem this feature will solve?

Valid (meaningful) values are:

• commonjs
• module

I had set CommonJS, and it behaves the same as if type was unset, which is so close to the actual commonjs behavior, that I thought I had set it correctly. But I kept having cases resulting in the MODULE_TYPELESS_PACKAGE_JSON warning, instead of failing hard.

Note that while tsconfig.js ignores case, the canonical version is CommonJS, so I never considered that I was using incorrect case.

What is the feature you are proposing to solve the problem?

Raise warning/error if "type" is set, but value is none of commonjs or module.

What alternatives have you considered?

No response

首先追踪 Node.js 在哪里处理 package.json 的 type 字段并发出 MODULE_TYPELESS_PACKAGE_JSON 警告；该 issue 没有指定源文件或测试，因此先梳理这条路径及其现有覆盖范围。为 commonjs 和 module 之外的值定义并测试所选择的警告或错误行为，同时保留这些规范值。