feat: migrate mocha to jest for running tests

.circleci/config.yml

@@ -21,8 +21,11 @@ jobs:
           name: Build
           command: npm run build
       - run:
-          name: Run Tests
-          command: npm run test
+          name: Run Tests against browser
+          command: npm run test:browser
+      - run:
+          name: Run Tests against node
+          command: npm run test:node
 workflows:
   build-and-test:
     jobs:

.gitignore

@@ -13,8 +13,10 @@ lib-cov
 pids
 logs
 results
+test-results
 
 npm-debug.log
 node_modules
 build/*
-!build/jwt-decode.js
+!build/jwt-decode.js
+coverage/*

babel.config.js

@@ -0,0 +1,3 @@
+module.exports = {
+  presets: [['@babel/preset-env', {targets: {node: 'current'}}]],
+};

jest.config.js

@@ -0,0 +1,17 @@
+module.exports = {
+    rootDir: './',
+    moduleFileExtensions: ['js'],
+    testMatch: ['**/test/**/*.test.js', '**/test/tests.js'],
+    coverageProvider: 'v8',
+    coveragePathIgnorePatterns: [
+      '/node_modules/',
+      './jest.config.js',
+      './test',
+    ],
+    reporters: [
+      'default',
+      ['jest-junit', { outputDirectory: 'test-results/jest' }]
+    ],
+    coverageReporters: ['lcov', 'text', 'text-summary'],
+    setupFiles: []
+  };

lib/atob.js

@@ -6,40 +6,40 @@
 var chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
 
 function InvalidCharacterError(message) {
-    this.message = message;
+  this.message = message;
 }
 
 InvalidCharacterError.prototype = new Error();
 InvalidCharacterError.prototype.name = "InvalidCharacterError";
 
 function polyfill(input) {
-    var str = String(input).replace(/=+$/, "");
-    if (str.length % 4 == 1) {
-        throw new InvalidCharacterError(
-            "'atob' failed: The string to be decoded is not correctly encoded."
-        );
-    }
-    for (
-        // initialize result and counters
-        var bc = 0, bs, buffer, idx = 0, output = "";
-        // get next character
-        (buffer = str.charAt(idx++));
-        // character found in table? initialize bit storage and add its ascii value;
-        ~buffer &&
-        ((bs = bc % 4 ? bs * 64 + buffer : buffer),
-            // and if not first of each 4 characters,
-            // convert the first 8 bits to one ascii character
-            bc++ % 4) ?
-        (output += String.fromCharCode(255 & (bs >> ((-2 * bc) & 6)))) :
-        0
-    ) {
-        // try to find character in table (0-63, not found => -1)
-        buffer = chars.indexOf(buffer);
-    }
-    return output;
+  var str = String(input).replace(/=+$/, "");
+  if (str.length % 4 == 1) {
+    throw new InvalidCharacterError(
+      "'atob' failed: The string to be decoded is not correctly encoded."
+    );
+  }
+  for (
+    // initialize result and counters
+    var bc = 0, bs, buffer, idx = 0, output = "";
+    // get next character
+    (buffer = str.charAt(idx++));
+    // character found in table? initialize bit storage and add its ascii value;
+    ~buffer &&
+    ((bs = bc % 4 ? bs * 64 + buffer : buffer),
+    // and if not first of each 4 characters,
+    // convert the first 8 bits to one ascii character
+    bc++ % 4)
+      ? (output += String.fromCharCode(255 & (bs >> ((-2 * bc) & 6))))
+      : 0
+  ) {
+    // try to find character in table (0-63, not found => -1)
+    buffer = chars.indexOf(buffer);
+  }
+  return output;
 }
 
 export default (typeof window !== "undefined" &&
-    window.atob &&
-    window.atob.bind(window)) ||
-polyfill;
+  window.atob &&
+  window.atob.bind(window)) ||
+  polyfill;