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WIP: Add no-regexp-unicode-property-escapes-2022 rule
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‎docs/rules/index.md‎

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@@ -27,6 +27,7 @@ There are multiple configs that enable all rules in this category: `plugin:es-x/
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| [es-x/no-object-hasown](./no-object-hasown.md) | disallow the `Object.hasOwn` method. | |
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| [es-x/no-private-in](./no-private-in.md) | disallow `#x in obj`. | |
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| [es-x/no-regexp-d-flag](./no-regexp-d-flag.md) | disallow RegExp `d` flag. | |
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| [es-x/no-regexp-unicode-property-escapes-2022](./no-regexp-unicode-property-escapes-2022.md) | disallow the new values of RegExp Unicode property escape sequences in ES2022. | |
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| [es-x/no-top-level-await](./no-top-level-await.md) | disallow top-level `await`. | |
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## ES2021

‎docs/rules/no-regexp-unicode-property-escapes-2022.md‎

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---
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title: "es-x/no-regexp-unicode-property-escapes-2022"
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description: "disallow the new values of RegExp Unicode property escape sequences in ES2022"
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---
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# es-x/no-regexp-unicode-property-escapes-2022
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> disallow the new values of RegExp Unicode property escape sequences in ES2022
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- ❗ <badge text="This rule has not been released yet." vertical="middle" type="error"> ***This rule has not been released yet.*** </badge>
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- ✅ The following configurations enable this rule: `plugin:es-x/no-new-in-es2022`, `plugin:es-x/restrict-to-es3`, `plugin:es-x/restrict-to-es5`, `plugin:es-x/restrict-to-es2015`, `plugin:es-x/restrict-to-es2016`, `plugin:es-x/restrict-to-es2017`, `plugin:es-x/restrict-to-es2018`, `plugin:es-x/restrict-to-es2019`, `plugin:es-x/restrict-to-es2020`, and `plugin:es-x/restrict-to-es2021`
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This rule reports the new values of ES2018 [RegExp Unicode property escape sequences](https://github.com/tc39/proposal-regexp-unicode-property-escapes#readme) which were added in ES2022.
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For example, the following patterns are valid in ES2022, but syntax error in ES2020 environments:
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- `\p{Script=Cpmn}`
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- `\p{Script=Cypro_Minoan}`
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- `\p{Script=Old_Uyghur}`
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- `\p{Script=Ougr}`
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- `\p{Script=Tangsa}`
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- `\p{Script=Tnsa}`
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- `\p{Script=Toto}`
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- `\p{Script=Vith}`
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- `\p{Script=Vithkuqi}`
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## 💡 Examples
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⛔ Examples of **incorrect** code for this rule:
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<eslint-playground type="bad">
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```js
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/*eslint es-x/no-regexp-unicode-property-escapes-2022: error */
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const r1 = /\p{Script=Cpmn}/u
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const r2 = /\p{Script=Cypro_Minoan}/u
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```
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</eslint-playground>
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## 📚 References
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- [Rule source](https://github.com/ota-meshi/eslint-plugin-es-x/blob/master/lib/rules/no-regexp-unicode-property-escapes-2022.js)
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- [Test source](https://github.com/ota-meshi/eslint-plugin-es-x/blob/master/tests/lib/rules/no-regexp-unicode-property-escapes-2022.js)

‎lib/configs/no-new-in-es2022.js‎

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"es-x/no-object-hasown": "error",
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"es-x/no-private-in": "error",
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"es-x/no-regexp-d-flag": "error",
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"es-x/no-regexp-unicode-property-escapes-2022": "error",
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"es-x/no-top-level-await": "error",
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},
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}

‎lib/index.js‎

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"no-regexp-unicode-property-escapes-2019": require("./rules/no-regexp-unicode-property-escapes-2019"),
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"no-regexp-unicode-property-escapes-2020": require("./rules/no-regexp-unicode-property-escapes-2020"),
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"no-regexp-unicode-property-escapes-2021": require("./rules/no-regexp-unicode-property-escapes-2021"),
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"no-regexp-unicode-property-escapes-2022": require("./rules/no-regexp-unicode-property-escapes-2022"),
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"no-regexp-y-flag": require("./rules/no-regexp-y-flag"),
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"no-rest-parameters": require("./rules/no-rest-parameters"),
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"no-rest-spread-properties": require("./rules/no-rest-spread-properties"),

‎lib/rules/no-regexp-unicode-property-escapes-2022.js‎

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/**
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* @author Yosuke Ota
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* See LICENSE file in root directory for full license.
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*/
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"use strict"
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const { defineRegExpHandler } = require("../util/define-regexp-handler")
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const {
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scNameSet,
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scValueSets,
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binPropertySets,
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} = require("../util/unicode-properties")
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function isNewUnicodePropertyKeyValuePair(key, value) {
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return scNameSet.has(key) && scValueSets.es2022.has(value)
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}
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function isNewBinaryUnicodeProperty(key) {
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return binPropertySets.es2022.has(key)
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}
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module.exports = {
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meta: {
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docs: {
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description:
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"disallow the new values of RegExp Unicode property escape sequences in ES2022",
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category: "ES2022",
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recommended: false,
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url: "http://ota-meshi.github.io/eslint-plugin-es-x/rules/no-regexp-unicode-property-escapes-2022.html",
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},
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fixable: null,
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messages: {
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forbidden: "ES2022 '{{value}}' is forbidden.",
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},
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schema: [],
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type: "problem",
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},
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create(context) {
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return defineRegExpHandler(context, (node, { pattern }) => {
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let foundValue = ""
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return {
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onUnicodePropertyCharacterSet(start, end, _kind, key, value) {
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if (foundValue) {
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return
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}
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if (
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value
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? isNewUnicodePropertyKeyValuePair(key, value)
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: isNewBinaryUnicodeProperty(key)
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) {
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foundValue = pattern.slice(start, end)
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}
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},
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onExit() {
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if (foundValue) {
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context.report({
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node,
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messageId: "forbidden",
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data: { value: foundValue },
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})
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}
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},
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}
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})
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},
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}

‎tests/lib/rules/no-regexp-unicode-property-escapes-2022.js‎

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/**
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* @author Yosuke Ota
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* See LICENSE file in root directory for full license.
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*/
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"use strict"
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const RuleTester = require("../../tester")
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const rule = require("../../../lib/rules/no-regexp-unicode-property-escapes-2022.js")
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if (!RuleTester.isSupported(2022)) {
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//eslint-disable-next-line no-console
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console.log("Skip the tests of no-regexp-unicode-property-escapes-2022.")
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return
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}
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new RuleTester().run("no-regexp-unicode-property-escapes-2022", rule, {
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valid: [
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String.raw`/\p{Script=Cpmn}/u`,
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String.raw`/\p{Letter}/u`,
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String.raw`/\P{Letter}/u`,
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String.raw`/\p{Script=Hiragana}/u`,
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String.raw`/\P{Script=Hiragana}/u`,
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String.raw`/\p{Extended_Pictographic}/`,
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String.raw`/\P{Extended_Pictographic}/`,
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String.raw`/\p{Script=Dogr}/`,
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String.raw`/\P{Script=Dogr}/`,
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String.raw`new RegExp('\\p{Extended_Pictographic}')`,
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String.raw`new RegExp('\\\\p{Extended_Pictographic}', 'u')`,
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String.raw`/\p{Extended_Pictographic}/u`,
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String.raw`/\p{Script=Dogr}/u`,
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String.raw`/\p{Script=Elym}/u`,
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String.raw`/\p{EBase}/u`,
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String.raw`/\p{Script=Chorasmian}/u`,
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],
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invalid: [
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{
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code: String.raw`/\p{Script=Cpmn}/u`,
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errors: ["ES2022 '\\p{Script=Cpmn}' is forbidden."],
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},
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{
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code: String.raw`/\p{Script=Cypro_Minoan}/u`,
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errors: ["ES2022 '\\p{Script=Cypro_Minoan}' is forbidden."],
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},
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{
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code: String.raw`/\p{Script=Old_Uyghur}/u`,
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errors: ["ES2022 '\\p{Script=Old_Uyghur}' is forbidden."],
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},
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{
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code: String.raw`/\p{Script=Ougr}/u`,
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errors: ["ES2022 '\\p{Script=Ougr}' is forbidden."],
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},
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{
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code: String.raw`/\p{Script=Tangsa}/u`,
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errors: ["ES2022 '\\p{Script=Tangsa}' is forbidden."],
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},
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{
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code: String.raw`/\p{Script=Tnsa}/u`,
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errors: ["ES2022 '\\p{Script=Tnsa}' is forbidden."],
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},
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{
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code: String.raw`/\p{Script=Toto}/u`,
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errors: ["ES2022 '\\p{Script=Toto}' is forbidden."],
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},
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{
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code: String.raw`/\p{Script=Vith}/u`,
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errors: ["ES2022 '\\p{Script=Vith}' is forbidden."],
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},
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{
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code: String.raw`/\p{Script=Vithkuqi}/u`,
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errors: ["ES2022 '\\p{Script=Vithkuqi}' is forbidden."],
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},
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],
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})

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