Switch to object option

Author: nzakas

README.md

@@ -155,7 +155,7 @@ export default [
 -   `no-duplicate-keys` - warns when there are two keys in an object with the same text.
 -   `no-empty-keys` - warns when there is a key in an object that is an empty string or contains only whitespace (note: `package-lock.json` uses empty keys intentionally)
 -   `no-unsafe-values` - warns on values that are unsafe for interchange, such as numbers outside safe range or lone surrogates.
--   `no-unnormalized-keys` - warns on keys containing [unnormalized characters](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/normalize#description).
+-   `no-unnormalized-keys` - warns on keys containing [unnormalized characters](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/normalize#description). You can optionally specify the normalization form via `{ form: "form_name" }`, where `form_name` can be any of `"NFC"`, `"NFD"`, `"NFKC"`, or `"NFKD"`.
 
 ## Configuration Comments
 

src/rules/no-unnormalized-keys.js

@@ -15,19 +15,23 @@ export default {
 			unnormalizedKey: "Unnormalized key '{{key}}' found.",
 		},
 
-		schema: {
-			type: "array",
-			minItems: 0,
-			maxItems: 1,
-			items: {
-				enum: ["NFC", "NFD", "NFKC", "NFKD"],
+		schema: [
+			{
+				type: "object",
+				properties: {
+					form: {
+						type: "string",
+						enum: ["NFC", "NFD", "NFKC", "NFKD"],
+					},
+				},
+				additionalProperties: false,
 			},
-		},
+		],
 	},
 
 	create(context) {
 		const normalization = context.options.length
-			? text => text.normalize(context.options[0])
+			? text => text.normalize(context.options[0].form)
 			: text => text.normalize();
 		return {
 			Member(node) {

tests/rules/no-unnormalized-keys.test.js

@@ -29,19 +29,19 @@ ruleTester.run("no-unnormalized-keys", rule, {
 		`{"${o}":"NFC"}`,
 		{
 			code: `{"${o}":"NFC"}`,
-			options: ["NFC"],
+			options: [{ form: "NFC" }],
 		},
 		{
 			code: `{"${o.normalize("NFD")}":"NFD"}`,
-			options: ["NFD"],
+			options: [{ form: "NFD" }],
 		},
 		{
 			code: `{"${o.normalize("NFKC")}":"NFKC"}`,
-			options: ["NFKC"],
+			options: [{ form: "NFKC" }],
 		},
 		{
 			code: `{"${o.normalize("NFKD")}":"NFKD"}`,
-			options: ["NFKD"],
+			options: [{ form: "NFKD" }],
 		},
 	],
 	invalid: [
@@ -74,7 +74,7 @@ ruleTester.run("no-unnormalized-keys", rule, {
 		},
 		{
 			code: `{"${o.normalize("NFKC")}":"NFKC"}`,
-			options: ["NFKD"],
+			options: [{ form: "NFKD" }],
 			errors: [
 				{
 					messageId: "unnormalizedKey",