feat: react native support #13

Author: Gozala

.github/workflows/node.js.yml

@@ -41,6 +41,8 @@ jobs:
         run: npm run test:es --if-present
       - name: Test CommonJS
         run: npm run test:cjs --if-present
+      - name: Test React Native
+        run: npm run test:react-native --if-present
   validate-types:
     name: Check type use
     runs-on: ubuntu-latest

Readme.md

@@ -7,7 +7,9 @@
 This package provides [TextEncoder][] and [TextDecoder][] [Encoding Standard][]
 APIs in a universal package. In the browsers it just exposes existing globals,
 in nodejs it exposes globals in newer node versions and ones from `util` module
-in older versions.
+in older versions, and in the React Native environments it exposes these from
+the [@zxing/text-encoding](https://www.npmjs.com/package/@zxing/text-encoding)
+polyfill (installed as an optional dependency).
 
 Package also works as ES module and CommonJS module.
 

package.json

@@ -8,6 +8,7 @@
   ],
   "type": "module",
   "browser": "./src/lib.browser.js",
+  "react-native": "./src/lib.react-native.js",
   "main": "./src/lib.cjs",
   "module": "./src/lib.js",
   "types": "./src/lib.d.ts",
@@ -21,19 +22,39 @@
   "scripts": {
     "test:node": "mocha test/test-*.spec.cjs",
     "test:browser": "playwright-test test/test-*.cjs",
-    "test:es": "mocha test/test-*.spec.js",
+    "test:react-native": "jest test/test-lib.react-native.spec.js",
+    "test:es": "mocha test/test-lib.spec.js",
     "test:cjs": "npm run test:node && npm run test:browser",
     "test:types:ts": "npm test --prefix test/ts-use",
     "test:types:esm": "npm test --prefix test/esm-use",
     "test:types:cjs": "npm test --prefix test/cjs-use",
     "test:types": "npm run test:types:ts && npm run test:types:esm && npm run test:types:cjs",
-    "test": "npm run test:es && npm run test:cjs && npm run test:types"
+    "test": "npm run test:es && npm run test:cjs && npm run test:react-native && npm run test:types"
   },
   "license": "MIT",
   "author": "Irakli Gozalishvili <dev@gozala.io>",
   "homepage": "https://github.com/gozala/web-encoding",
   "devDependencies": {
+    "jest": "^26.6.3",
+    "metro-react-native-babel-preset": "^0.64.0",
     "mocha": "8.2.1",
-    "playwright-test": "1.2.0"
+    "playwright-test": "1.2.0",
+    "react-native": "^0.63.4"
+  },
+  "optionalDependencies": {
+    "@zxing/text-encoding": "0.9.0"
+  },
+  "jest": {
+    "preset": "react-native",
+    "transform": {
+      "\\.js$": [
+        "babel-jest",
+        {
+          "presets": [
+            "module:metro-react-native-babel-preset"
+          ]
+        }
+      ]
+    }
   }
 }

src/lib.react-native.js

@@ -0,0 +1,5 @@
+"use strict"
+
+const textEncoding = require("@zxing/text-encoding")
+exports.TextEncoder = textEncoding.TextEncoder
+exports.TextDecoder = textEncoding.TextDecoder

test/test-lib.react-native.spec.js

@@ -0,0 +1,28 @@
+import { TextEncoder, TextDecoder } from "../src/lib.react-native.js"
+import assert from "assert"
+
+describe("text encode/decode", () => {
+  const data = Uint8Array.from([
+    104,
+    101,
+    108,
+    108,
+    111,
+    32,
+    119,
+    111,
+    114,
+    108,
+    100,
+  ])
+
+  it("can encode text", () => {
+    const bytes = new TextEncoder().encode("hello world")
+    assert.deepStrictEqual(bytes, data)
+  })
+
+  it("can decode text", () => {
+    const text = new TextDecoder().decode(data)
+    assert.equal(text, "hello world")
+  })
+})