Allow ignoring certain paths from sorting

[JoshuaKGoldberg]

👋 I'm a big fan of this plugin and use it in http://github.com/JoshuaKGoldberg/template-typescript-node-package to sort package.json contents. Thanks for making it!

Turns out sometimes package.json content ordering does matter. Per https://www.typescriptlang.org/docs/handbook/esm-node.html#packagejson-exports-imports-and-self-referencing, the types resolution under "exports" > "." must come first:

// package.json
{
    "exports": {
        ".": {
            // Entry-point for TypeScript resolution - must occur first!
            "types": "./types/index.d.ts",
            // Entry-point for `import "my-package"` in ESM
            "import": "./esm/index.js",
            // Entry-point for `require("my-package") in CJS
            "require": "./commonjs/index.cjs",
        },
    }
}

Would you be open to a config option allowing to exclude certain object property paths? Maybe:

module.exports = {
	overrides: [
		{
			files: "*.json",
			parser: "jsonc-eslint-parser",
			rules: {
				"jsonc/sort-keys": [
					"error",
					{
						ignore: ["exports", "."],
					},
				],
			},
		},
	],
};

...I'm not confident in that ignore: string[] format. But can't think of a better option right now. 🤔

Potentially relevant: typescript-eslint/typescript-eslint#6017

[ota-meshi]

Thank you for posting issue!

I think setting the rule options like this might work:

    "jsonc/sort-keys": ["error",
        {
            "pathPattern": "^exports(?:\\[[^\\]]+\\]|\\.[^.]+)$",
            "order": [
                "type",
                "import",
                "require"
            ]
        },
        {
            "pathPattern": ".*",
            "order": { "type": "asc" }
        }
    ]

DEMO

[JoshuaKGoldberg]

Thanks for the quick response! That's close and probably usable for my use case. But it still enforces an ordering. Is there a way to ignore that particular pathPattern altogether? It'd be nice to not have to specify the order, in case there are other types of exports defined.

[ota-meshi]

There is currently no way to explicitly set it to be ignored.
I think it's probably a good idea to add a order: { type: "ignore" } option to the rule to achieve that.

The current rule ignores ordering for keys that are not defined, so by using a pattern that doesn't match anything, you can also use a hack like this to ignore ordering: "order": [ { "keyPattern": "(?=a)b" } ]