Initial implementation, tests, readme

.eslintrc

@@ -0,0 +1,9 @@
+{
+	"root": true,
+
+	"extends": "@ljharb",
+
+	"rules": {
+		"prefer-regex-literals": "off",
+	},
+}

.github/FUNDING.yml

@@ -0,0 +1,12 @@
+# These are supported funding model platforms
+
+github: [ljharb]
+patreon: # Replace with a single Patreon username
+open_collective: # Replace with a single Open Collective username
+ko_fi: # Replace with a single Ko-fi username
+tidelift: npm/has-named-captures
+community_bridge: # Replace with a single Community Bridge project-name e.g., cloud-foundry
+liberapay: # Replace with a single Liberapay username
+issuehunt: # Replace with a single IssueHunt username
+otechie: # Replace with a single Otechie username
+custom: # Replace with up to 4 custom sponsorship URLs e.g., ['link1', 'link2']

.github/workflows/node-aught.yml

@@ -0,0 +1,18 @@
+name: 'Tests: node.js < 10'
+
+on: [pull_request, push]
+
+jobs:
+  tests:
+    uses: ljharb/actions/.github/workflows/node.yml@main
+    with:
+      range: '< 10'
+      type: minors
+      command: npm run tests-only
+
+  node:
+    name: 'node < 10'
+    needs: [tests]
+    runs-on: ubuntu-latest
+    steps:
+      - run: 'echo tests completed'

.github/workflows/node-pretest.yml

@@ -0,0 +1,7 @@
+name: 'Tests: pretest/posttest'
+
+on: [pull_request, push]
+
+jobs:
+  tests:
+    uses: ljharb/actions/.github/workflows/pretest.yml@main

.github/workflows/node-tens.yml

@@ -0,0 +1,18 @@
+name: 'Tests: node.js >= 10'
+
+on: [pull_request, push]
+
+jobs:
+  tests:
+    uses: ljharb/actions/.github/workflows/node.yml@main
+    with:
+      range: '>= 10'
+      type: minors
+      command: npm run tests-only
+
+  node:
+    name: 'node >= 10'
+    needs: [tests]
+    runs-on: ubuntu-latest
+    steps:
+      - run: 'echo tests completed'

.github/workflows/rebase.yml

@@ -0,0 +1,9 @@
+name: Automatic Rebase
+
+on: [pull_request_target]
+
+jobs:
+  _:
+    uses: ljharb/actions/.github/workflows/rebase.yml@main
+    secrets:
+      token: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/require-allow-edits.yml

@@ -0,0 +1,12 @@
+name: Require “Allow Edits”
+
+on: [pull_request_target]
+
+jobs:
+  _:
+    name: "Require “Allow Edits”"
+
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: ljharb/require-allow-edits@main

.gitignore

@@ -133,3 +133,5 @@ dist
 npm-shrinkwrap.json
 package-lock.json
 yarn.lock
+
+.npmignore

.npmrc

@@ -1 +1,3 @@
 package-lock=false
+allow-same-version=true
+message=v%s

.nycrc

@@ -0,0 +1,13 @@
+{
+	"all": true,
+	"check-coverage": false,
+	"reporter": ["text-summary", "text", "html", "json"],
+	"lines": 86,
+	"statements": 85.93,
+	"functions": 82.43,
+	"branches": 76.06,
+	"exclude": [
+		"coverage",
+		"test"
+	]
+}

CHANGELOG.md

@@ -0,0 +1,5 @@
+### Changelog
+
+All notable changes to this project will be documented in this file. Dates are displayed in UTC.
+
+Generated by [`auto-changelog`](https://github.com/CookPete/auto-changelog).

README.md

@@ -1,2 +1,40 @@
-# has-named-captures
+# has-named-captures <sup>[![Version Badge][npm-version-svg]][package-url]</sup>
+
+[![github actions][actions-image]][actions-url]
+[![coverage][codecov-image]][codecov-url]
+[![License][license-image]][license-url]
+[![Downloads][downloads-image]][downloads-url]
+
+[![npm badge][npm-badge-png]][package-url]
+
 Does the JS environment support named capture groups in regexes?
+
+Returns `true` in node 10+, and equivalent engines.
+
+## Example
+
+```js
+var hasNamedCaptures = require('has-named-captures');
+var assert = require('assert');
+
+assert.equal(typeof hasNamedCaptures(), 'boolean', 'returns true or false');
+```
+
+## Tests
+Simply clone the repo, `npm install`, and run `npm test`
+
+[package-url]: https://npmjs.org/package/has-named-captures
+[npm-version-svg]: https://versionbadg.es/inspect-js/has-named-captures.svg
+[deps-svg]: https://david-dm.org/inspect-js/has-named-captures.svg
+[deps-url]: https://david-dm.org/inspect-js/has-named-captures
+[dev-deps-svg]: https://david-dm.org/inspect-js/has-named-captures/dev-status.svg
+[dev-deps-url]: https://david-dm.org/inspect-js/has-named-captures#info=devDependencies
+[npm-badge-png]: https://nodei.co/npm/has-named-captures.png?downloads=true&stars=true
+[license-image]: https://img.shields.io/npm/l/has-named-captures.svg
+[license-url]: LICENSE
+[downloads-image]: https://img.shields.io/npm/dm/has-named-captures.svg
+[downloads-url]: https://npm-stat.com/charts.html?package=has-named-captures
+[codecov-image]: https://codecov.io/gh/inspect-js/has-named-captures/branch/main/graphs/badge.svg
+[codecov-url]: https://app.codecov.io/gh/inspect-js/has-named-captures/
+[actions-image]: https://img.shields.io/endpoint?url=https://github-actions-badge-u3jn4tfpocch.runkit.sh/inspect-js/has-named-captures
+[actions-url]: https://github.com/inspect-js/has-named-captures/actions

index.d.ts

@@ -0,0 +1,3 @@
+declare function hasNamedCaptures(): boolean;
+
+export = hasNamedCaptures;

index.js

@@ -0,0 +1,10 @@
+'use strict';
+
+/** @type {import('.')} */
+module.exports = function hasNamedCaptures() {
+	try {
+		return !!new RegExp('(?<x>.)');
+	} catch (e) {
+		return false;
+	}
+};

package.json

@@ -7,8 +7,21 @@
 		".": "./index.js",
 		"./package.json": "./package.json"
 	},
+	"sideEffects": false,
+	"types": "index.d.ts",
 	"scripts": {
-		"test": "echo \"Error: no test specified\" && exit 1"
+		"prepack": "npmignore --auto --commentLines=autogenerated",
+		"prepublishOnly": "safe-publish-latest",
+		"prepublish": "not-in-publish || npm run prepublishOnly",
+		"prelint": "evalmd README.md",
+		"lint": "eslint --ext=js,mjs .",
+		"postlint": "tsc -p .",
+		"pretest": "npm run lint",
+		"tests-only": "nyc tape 'test/**/*.js'",
+		"test": "npm run tests-only",
+		"posttest": "aud --production",
+		"version": "auto-changelog && git add CHANGELOG.md",
+		"postversion": "auto-changelog && git add CHANGELOG.md && git commit --no-edit --amend && git tag -f \"v$(node -e \"console.log(require('./package.json').version)\")\""
 	},
 	"repository": {
 		"type": "git",
@@ -28,5 +41,38 @@
 	"bugs": {
 		"url": "https://github.com/inspect-js/has-named-captures/issues"
 	},
-	"homepage": "https://github.com/inspect-js/has-named-captures#readme"
+	"homepage": "https://github.com/inspect-js/has-named-captures#readme",
+	"devDependencies": {
+		"@ljharb/eslint-config": "^21.1.0",
+		"@types/tape": "^5.6.4",
+		"aud": "^2.0.4",
+		"auto-changelog": "^2.4.0",
+		"eslint": "=8.8.0",
+		"evalmd": "^0.0.19",
+		"in-publish": "^2.0.1",
+		"npmignore": "^0.3.1",
+		"nyc": "^10.3.2",
+		"safe-publish-latest": "^2.0.0",
+		"tape": "^5.7.4",
+		"typescript": "next"
+	},
+	"testling": {
+		"files": "test/index.js"
+	},
+	"engines": {
+		"node": ">= 0.4"
+	},
+	"auto-changelog": {
+		"output": "CHANGELOG.md",
+		"template": "keepachangelog",
+		"unreleased": false,
+		"commitLimit": false,
+		"backfillLimit": false,
+		"hideCredit": true
+	},
+	"publishConfig": {
+		"ignore": [
+			".github/workflows"
+		]
+	}
 }

test/index.js

@@ -0,0 +1,28 @@
+'use strict';
+
+var test = require('tape');
+var hasNamedCaptures = require('../');
+
+test('hasNamedCaptures', function (t) {
+	t.equal(typeof hasNamedCaptures, 'function', 'is a function');
+	t.equal(typeof hasNamedCaptures(), 'boolean', 'returns a boolean');
+
+	t.end();
+});
+
+test('has named captures', { skip: !hasNamedCaptures() }, function (t) {
+	var re = new RegExp('(?<year>\\d{4})-(?<month>\\d{2})-(?<day>\\d{2})');
+	var groups = /** @type {RegExpExecArray} */ (re.exec('2024-01-29')).groups; // eslint-disable-line no-extra-parens
+
+	t.deepEqual(groups, { __proto__: null, year: '2024', month: '01', day: '29' }, 'returns named captures');
+
+	t.end();
+});
+
+test('no named captures', { skip: hasNamedCaptures() }, function (t) {
+	t['throws'](function () {
+		return new RegExp('(?<year>\\d{4})-(?<month>\\d{2})-(?<day>\\d{2})');
+	});
+
+	t.end();
+});

tsconfig.json

@@ -0,0 +1,49 @@
+{
+  "compilerOptions": {
+    /* Visit https://aka.ms/tsconfig to read more about this file */
+
+    /* Projects */
+
+    /* Language and Environment */
+    "target": "es2018",                                  /* Set the JavaScript language version for emitted JavaScript and include compatible library declarations. */
+    // "lib": [],                                        /* Specify a set of bundled library declaration files that describe the target runtime environment. */
+    // "noLib": true,                                    /* Disable including any library files, including the default lib.d.ts. */
+    "useDefineForClassFields": true,                     /* Emit ECMAScript-standard-compliant class fields. */
+    // "moduleDetection": "auto",                        /* Control what method is used to detect module-format JS files. */
+
+    /* Modules */
+    "module": "commonjs",                                /* Specify what module code is generated. */
+    // "rootDir": "./",                                  /* Specify the root folder within your source files. */
+    // "moduleResolution": "node10",                     /* Specify how TypeScript looks up a file from a given module specifier. */
+    // "baseUrl": "./",                                  /* Specify the base directory to resolve non-relative module names. */
+    // "paths": {},                                      /* Specify a set of entries that re-map imports to additional lookup locations. */
+    // "rootDirs": [],                                   /* Allow multiple folders to be treated as one when resolving modules. */
+    "typeRoots": ["types"],                              /* Specify multiple folders that act like './node_modules/@types'. */
+    "resolveJsonModule": true,                           /* Enable importing .json files. */
+    // "allowArbitraryExtensions": true,                 /* Enable importing files with any extension, provided a declaration file is present. */
+
+    /* JavaScript Support */
+    "allowJs": true,                                     /* Allow JavaScript files to be a part of your program. Use the 'checkJS' option to get errors from these files. */
+    "checkJs": true,                                     /* Enable error reporting in type-checked JavaScript files. */
+    "maxNodeModuleJsDepth": 1,                           /* Specify the maximum folder depth used for checking JavaScript files from 'node_modules'. Only applicable with 'allowJs'. */
+
+    /* Emit */
+    "declaration": true,                                 /* Generate .d.ts files from TypeScript and JavaScript files in your project. */
+    "declarationMap": true,                              /* Create sourcemaps for d.ts files. */
+    "noEmit": true,                                      /* Disable emitting files from a compilation. */
+
+    /* Interop Constraints */
+    "allowSyntheticDefaultImports": true,                /* Allow 'import x from y' when a module doesn't have a default export. */
+    "esModuleInterop": true,                             /* Emit additional JavaScript to ease support for importing CommonJS modules. This enables 'allowSyntheticDefaultImports' for type compatibility. */
+    "forceConsistentCasingInFileNames": true,            /* Ensure that casing is correct in imports. */
+
+    /* Type Checking */
+    "strict": true,                                      /* Enable all strict type-checking options. */
+
+    /* Completeness */
+    //"skipLibCheck": true                                 /* Skip type checking all .d.ts files. */
+  },
+  "exclude": [
+    "coverage"
+  ]
+}