chore: Drop intl-pluralrules as unnecessary in modern environments

fluent-bundle/README.md

@@ -47,17 +47,8 @@ The API reference is available at https://projectfluent.org/fluent.js/bundle.
 
 - `Intl.DateTimeFormat` (standard, well-supported)
 - `Intl.NumberFormat` (standard, well-supported)
-- `Intl.PluralRules` (standard, new in ECMAScript 2018)
-
-`Intl.PluralRules` may already be available in some engines. In most cases,
-however, a polyfill will be required. We recommend [intl-pluralrules][].
-
-```javascript
-import "intl-pluralrules";
-import { FluentBundle } from "@fluent/bundle";
-```
+- `Intl.PluralRules` (standard, well-supported)
 
 See also the [Compatibility][] article on the `fluent.js` wiki.
 
-[intl-pluralrules]: https://www.npmjs.com/package/intl-pluralrules
 [compatibility]: https://github.com/projectfluent/fluent.js/wiki/Compatibility

fluent-react/README.md

@@ -22,7 +22,7 @@ maximum flexibility, `@fluent/react` expects the developer to write a little
 bit of a setup code related to language negotiation and translation fetching.
 It makes `@fluent/react` unopinionated and suitable for many different
 scenarios. You will likely also need to install a few other packages:
-`@fluent/bundle`, `@fluent/langneg` and `intl-pluralrules`.
+`@fluent/bundle` and `@fluent/langneg`.
 
 Consult the [wiki][] for documentation on how to set up and use
 `@fluent/react`.

package.json

@@ -42,7 +42,6 @@
     "esm": "^3.2.22",
     "fuzzer": "^0.2.1",
     "gh-pages": "^6.1.1",
-    "intl-pluralrules": "^1.0.0",
     "mocha": "^10.2.0",
     "prettier": "^3.2.5",
     "prettyjson": "^1.2.1",

tools/format.js

@@ -7,7 +7,6 @@ const fs = require("fs");
 const program = require("commander");
 
 require = require("esm")(module);
-require("intl-pluralrules");
 const Fluent = require("../fluent-bundle/esm/index.js");
 
 program

tools/perf/benchmark.node.js

@@ -3,7 +3,6 @@ const fs = require("fs");
 const FluentBundle = require("../../fluent-bundle/index.js");
 const FluentSyntax = require("../../fluent-syntax/index.js");
 const { runTest } = require("./benchmark.common");
-require("intl-pluralrules");
 
 const env = {
   readFile: path => {