diff --git a/.gitignore b/.gitignore
index dd3d82b..30da823 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,3 @@
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 node_modules/
 yarn-error.log
diff --git a/package-lock.json b/package-lock.json
new file mode 100644
index 0000000..81b7f99
--- /dev/null
+++ b/package-lock.json
@@ -0,0 +1,2643 @@
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+      }
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+      "resolved": "https://registry.npmjs.org/to-regex-range/-/to-regex-range-5.0.1.tgz",
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+      }
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+      "dev": true
+    },
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+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/util-deprecate/-/util-deprecate-1.0.2.tgz",
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+    "vinyl": {
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+      "dev": true,
+      "requires": {
+        "clone": "^2.1.1",
+        "clone-buffer": "^1.0.0",
+        "clone-stats": "^1.0.0",
+        "cloneable-readable": "^1.0.0",
+        "remove-trailing-separator": "^1.0.1",
+        "replace-ext": "^1.0.0"
+      }
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+    "vinyl-sourcemaps-apply": {
+      "version": "0.2.1",
+      "resolved": "https://registry.npmjs.org/vinyl-sourcemaps-apply/-/vinyl-sourcemaps-apply-0.2.1.tgz",
+      "integrity": "sha1-q2VJ1h0XLCsbh75cUI0jnI74dwU= sha512-+oDh3KYZBoZC8hfocrbrxbLUeaYtQK7J5WU5Br9VqWqmCll3tFJqKp97GC9GmMsVIL0qnx2DgEDVxdo5EZ5sSw==",
+      "dev": true,
+      "requires": {
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+      }
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+      "version": "1.3.1",
+      "resolved": "https://registry.npmjs.org/which/-/which-1.3.1.tgz",
+      "integrity": "sha512-HxJdYWq1MTIQbJ3nw0cqssHoTNU267KlrDuGZ1WYlxDStUtKUhOaJmh112/TZmHxxUfuJqPXSOm7tDyas0OSIQ==",
+      "dev": true,
+      "requires": {
+        "isexe": "^2.0.0"
+      }
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+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/which-module/-/which-module-2.0.0.tgz",
+      "integrity": "sha1-2e8H3Od7mQK4o6j6SzHD4/fm6Ho= sha512-B+enWhmw6cjfVC7kS8Pj9pCrKSc5txArRyaYGe088shv/FGWH+0Rjx/xPgtsWfsUtS27FkP697E4DDhgrgoc0Q==",
+      "dev": true
+    },
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+      "version": "1.1.3",
+      "resolved": "https://registry.npmjs.org/wide-align/-/wide-align-1.1.3.tgz",
+      "integrity": "sha512-QGkOQc8XL6Bt5PwnsExKBPuMKBxnGxWWW3fU55Xt4feHozMUhdUMaBCk290qpm/wG5u/RSKzwdAC4i51YigihA==",
+      "dev": true,
+      "requires": {
+        "string-width": "^1.0.2 || 2"
+      }
+    },
+    "wrap-ansi": {
+      "version": "5.1.0",
+      "resolved": "https://registry.npmjs.org/wrap-ansi/-/wrap-ansi-5.1.0.tgz",
+      "integrity": "sha512-QC1/iN/2/RPVJ5jYK8BGttj5z83LmSKmvbvrXPNCLZSEb32KKVDJDl/MOt2N01qU2H/FkzEa9PKto1BqDjtd7Q==",
+      "dev": true,
+      "requires": {
+        "ansi-styles": "^3.2.0",
+        "string-width": "^3.0.0",
+        "strip-ansi": "^5.0.0"
+      },
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+        "ansi-regex": {
+          "version": "4.1.0",
+          "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-4.1.0.tgz",
+          "integrity": "sha512-1apePfXM1UOSqw0o9IiFAovVz9M5S1Dg+4TrDwfMewQ6p/rmMueb7tWZjQ1rx4Loy1ArBggoqGpfqqdI4rondg==",
+          "dev": true
+        },
+        "string-width": {
+          "version": "3.1.0",
+          "resolved": "https://registry.npmjs.org/string-width/-/string-width-3.1.0.tgz",
+          "integrity": "sha512-vafcv6KjVZKSgz06oM/H6GDBrAtz8vdhQakGjFIvNrHA6y3HCF1CInLy+QLq8dTJPQ1b+KDUqDFctkdRW44e1w==",
+          "dev": true,
+          "requires": {
+            "emoji-regex": "^7.0.1",
+            "is-fullwidth-code-point": "^2.0.0",
+            "strip-ansi": "^5.1.0"
+          }
+        },
+        "strip-ansi": {
+          "version": "5.2.0",
+          "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-5.2.0.tgz",
+          "integrity": "sha512-DuRs1gKbBqsMKIZlrffwlug8MHkcnpjs5VPmL1PAh+mA30U0DTotfDZ0d2UUsXpPmPmMMJ6W773MaA3J+lbiWA==",
+          "dev": true,
+          "requires": {
+            "ansi-regex": "^4.1.0"
+          }
+        }
+      }
+    },
+    "wrappy": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
+      "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8= sha512-l4Sp/DRseor9wL6EvV2+TuQn63dMkPjZ/sp9XkghTEbV9KlPS1xUsZ3u7/IQO4wxtcFB4bgpQPRcR3QCvezPcQ==",
+      "dev": true
+    },
+    "y18n": {
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/y18n/-/y18n-4.0.0.tgz",
+      "integrity": "sha512-r9S/ZyXu/Xu9q1tYlpsLIsa3EeLXXk0VwlxqTcFRfg9EhMW+17kbt9G0NrgCmhGb5vT2hyhJZLfDGx+7+5Uj/w==",
+      "dev": true
+    },
+    "yargs": {
+      "version": "13.3.0",
+      "resolved": "https://registry.npmjs.org/yargs/-/yargs-13.3.0.tgz",
+      "integrity": "sha512-2eehun/8ALW8TLoIl7MVaRUrg+yCnenu8B4kBlRxj3GJGDKU1Og7sMXPNm1BYyM1DOJmTZ4YeN/Nwxv+8XJsUA==",
+      "dev": true,
+      "requires": {
+        "cliui": "^5.0.0",
+        "find-up": "^3.0.0",
+        "get-caller-file": "^2.0.1",
+        "require-directory": "^2.1.1",
+        "require-main-filename": "^2.0.0",
+        "set-blocking": "^2.0.0",
+        "string-width": "^3.0.0",
+        "which-module": "^2.0.0",
+        "y18n": "^4.0.0",
+        "yargs-parser": "^13.1.1"
+      },
+      "dependencies": {
+        "ansi-regex": {
+          "version": "4.1.0",
+          "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-4.1.0.tgz",
+          "integrity": "sha512-1apePfXM1UOSqw0o9IiFAovVz9M5S1Dg+4TrDwfMewQ6p/rmMueb7tWZjQ1rx4Loy1ArBggoqGpfqqdI4rondg==",
+          "dev": true
+        },
+        "string-width": {
+          "version": "3.1.0",
+          "resolved": "https://registry.npmjs.org/string-width/-/string-width-3.1.0.tgz",
+          "integrity": "sha512-vafcv6KjVZKSgz06oM/H6GDBrAtz8vdhQakGjFIvNrHA6y3HCF1CInLy+QLq8dTJPQ1b+KDUqDFctkdRW44e1w==",
+          "dev": true,
+          "requires": {
+            "emoji-regex": "^7.0.1",
+            "is-fullwidth-code-point": "^2.0.0",
+            "strip-ansi": "^5.1.0"
+          }
+        },
+        "strip-ansi": {
+          "version": "5.2.0",
+          "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-5.2.0.tgz",
+          "integrity": "sha512-DuRs1gKbBqsMKIZlrffwlug8MHkcnpjs5VPmL1PAh+mA30U0DTotfDZ0d2UUsXpPmPmMMJ6W773MaA3J+lbiWA==",
+          "dev": true,
+          "requires": {
+            "ansi-regex": "^4.1.0"
+          }
+        }
+      }
+    },
+    "yargs-parser": {
+      "version": "13.1.1",
+      "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-13.1.1.tgz",
+      "integrity": "sha512-oVAVsHz6uFrg3XQheFII8ESO2ssAf9luWuAd6Wexsu4F3OtIW0o8IribPXYrD4WC24LWtPrJlGy87y5udK+dxQ==",
+      "dev": true,
+      "requires": {
+        "camelcase": "^5.0.0",
+        "decamelize": "^1.2.0"
+      }
+    },
+    "yargs-unparser": {
+      "version": "1.6.0",
+      "resolved": "https://registry.npmjs.org/yargs-unparser/-/yargs-unparser-1.6.0.tgz",
+      "integrity": "sha512-W9tKgmSn0DpSatfri0nx52Joq5hVXgeLiqR/5G0sZNDoLZFOr/xjBUDcShCOGNsBnEMNo1KAMBkTej1Hm62HTw==",
+      "dev": true,
+      "requires": {
+        "flat": "^4.1.0",
+        "lodash": "^4.17.15",
+        "yargs": "^13.3.0"
+      }
+    }
+  }
+}
diff --git a/package.json b/package.json
index 33ec668..492c98d 100644
--- a/package.json
+++ b/package.json
@@ -7,12 +7,10 @@
   "author": "Sam Thorogood <sam.thorogood@gmail.com>",
   "license": "Apache-2.0",
   "devDependencies": {
-    "chai": "^4.2.0",
-    "google-closure-compiler": "^20200406.0.0",
-    "mocha": "^7.1.0"
+    "google-closure-compiler": "^20200406.0.0"
   },
   "scripts": {
     "compile": "./compile.sh",
-    "test": "mocha"
+    "test": "node --test ./test.mjs"
   }
 }
diff --git a/test-setup.mjs b/test-setup.mjs
new file mode 100644
index 0000000..21125fa
--- /dev/null
+++ b/test-setup.mjs
@@ -0,0 +1,8 @@
+
+const NativeTextEncoder = global.TextEncoder;
+const NativeTextDecoder = global.TextDecoder;
+
+global.TextDecoder = null;
+global.TextEncoder = null;
+
+export { NativeTextEncoder, NativeTextDecoder };
diff --git a/test.js b/test.js
deleted file mode 100644
index 08accfd..0000000
--- a/test.js
+++ /dev/null
@@ -1,18 +0,0 @@
-/**
- * @fileoverview Test runner inside a Node environment.
- */
-
-const mocha = require('mocha');
-const chai = require('chai');
-
-global.suite = mocha.suite;
-global.test = mocha.test;
-global.assert = chai.assert;
-
-global.NativeTextDecoder = global.TextDecoder;
-global.NativeTextEncoder = global.TextEncoder;
-global.TextDecoder = null;
-global.TextEncoder = null;
-
-require('./text.js');  // include polyfill
-require('./suite.js');
diff --git a/suite.js b/test.mjs
similarity index 59%
rename from suite.js
rename to test.mjs
index a8fc460..0dc9089 100644
--- a/suite.js
+++ b/test.mjs
@@ -1,10 +1,32 @@
-function tests(isNative, TextEncoder, TextDecoder) {
+/**
+ * @fileoverview Test runner inside a Node environment.
+ */
+
+import {
+  NativeTextEncoder,
+  NativeTextDecoder,
+} from './test-setup.mjs';
+
+import './text.js';
+
+import test from 'node:test';
+import assert from 'node:assert';
+
+/**
+ * @param {boolean} isNative
+ * @param {typeof TextEncoder} TextEncoder
+ * @param {typeof TextDecoder} TextDecoder
+ */
+export function tests(isNative, TextEncoder, TextDecoder) {
   const dec = new TextDecoder();
   const enc = new TextEncoder('utf-8');
 
-  suite(isNative ? 'native' : 'polyfill', () => {
+  console.info('running', { isNative, TextEncoder, TextDecoder });
 
-    test('really large string', () => {
+  test(isNative ? 'native suite' : 'polyfill suite', async (c) => {
+    const test = c.test.bind(c);
+
+    await test('really large string', () => {
       const chunks = new Array(64);
       for (let i = 0; i < chunks.length; ++i) {
         const s = new Array(65535).fill('x'.charCodeAt(0));
@@ -15,33 +37,34 @@ function tests(isNative, TextEncoder, TextDecoder) {
       const buffer = enc.encode(s);
       const out = dec.decode(buffer);
 
-      assert.equal(out, s);
+      assert.strictEqual(out, s);
     });
 
-    suite('decoder', () => {
+    await test('decoder', async (c) => {
+      const test = c.test.bind(c);
 
-      test('basic', () => {
+      await test('basic', () => {
         const buffer = new Uint8Array([104, 101, 108, 108, 111]);
-        assert.equal(dec.decode(buffer), 'hello', 'directly Uint8Array');
-        assert.equal(dec.decode(buffer.buffer), 'hello', 'pass underlying ArrayBuffer');
+        assert.strictEqual(dec.decode(buffer), 'hello', 'directly Uint8Array');
+        assert.strictEqual(dec.decode(buffer.buffer), 'hello', 'pass underlying ArrayBuffer');
       });
 
-      test('non-8 backing', () => {
+      await test('non-8 backing', () => {
         // If passed a Uint32Array, TextDecoder will still decode the real
         // underlying bytes. Source data must be aligned.
         const padded = new Uint8Array([104, 101, 108, 108, 111, 33, 46, 46]);
         const u32 = new Uint32Array(padded.buffer);
-        assert.equal(padded.length >> 2, u32.length, 'u32 must be 1/4 of real data');
-        assert.equal(dec.decode(u32), 'hello!..', 'pass Uint32Array');
-        assert.equal(dec.decode(u32.buffer), 'hello!..', 'pass Uint32Array\'s buffer');
+        assert.strictEqual(padded.length >> 2, u32.length, 'u32 must be 1/4 of real data');
+        assert.strictEqual(dec.decode(u32), 'hello!..', 'pass Uint32Array');
+        assert.strictEqual(dec.decode(u32.buffer), 'hello!..', 'pass Uint32Array\'s buffer');
 
         // Ensure that we don't parse larger typed arrays as uint8's. We expect
         // nulls here to pad out the remaining three bytes in every word.
         const u32raw = new Uint32Array([104, 105, 33, 46]);
-        assert.equal(dec.decode(u32raw), 'h\0\0\0i\0\0\0!\0\0\0.\0\0\0', 'u32 with nulls');
+        assert.strictEqual(dec.decode(u32raw), 'h\0\0\0i\0\0\0!\0\0\0.\0\0\0', 'u32 with nulls');
       });
 
-      test('arraylike', () => {
+      await test('arraylike', () => {
         const arr = [104, 101, 108, 108, 111];
 
         if (isNative) {
@@ -49,35 +72,35 @@ function tests(isNative, TextEncoder, TextDecoder) {
           assert.throws(() => dec.decode(arr));
         } else {
           // Polyfill can accept Array or array-like.
-          assert.equal(dec.decode(arr), 'hello', 'decode arraylike');
+          assert.strictEqual(dec.decode(arr), 'hello', 'decode arraylike');
         }
       });
 
-      test('constructor', () => {
+      await test('constructor', () => {
         assert.throws(() => {
           new TextDecoder('invalid');
         }, RangeError);
 
         if (!isNative) {
           assert.throws(() => {
-            new TextDecoder('utf-8', {fatal: true});
+            new TextDecoder('utf-8', { fatal: true });
           }, Error, 'unsupported', 'fatal is unsupported');
         }
       });
 
-      test('subarray', () => {
+      await test('subarray', () => {
         const buffer = new Uint8Array([104, 101, 108, 108, 111]);
         const array = buffer.subarray(0, 4);
-        assert.equal(dec.decode(array), 'hell');
+        assert.strictEqual(dec.decode(array), 'hell');
       });
 
-      test('null in middle', () => {
+      await test('null in middle', () => {
         const s = 'pad\x00pad';
         const buffer = new Uint8Array([112, 97, 100, 0, 112, 97, 100]);
         assert.deepEqual(dec.decode(buffer), s);
       });
 
-      test('null at ends', () => {
+      await test('null at ends', () => {
         const s = '\x00\x00?\x00\x00';
         const buffer = new Uint8Array([0, 0, 63, 0, 0]);
         assert.deepEqual(dec.decode(buffer), s);
@@ -85,14 +108,15 @@ function tests(isNative, TextEncoder, TextDecoder) {
 
     });
 
-    suite('encoder', () => {
+    await test('encoder', async (c) => {
+      const test = c.test.bind(c);
 
-      test('basic', () => {
+      await test('basic', () => {
         const buffer = new Uint8Array([104, 101, 108, 108, 111]);
         assert.deepEqual(enc.encode('hello'), buffer);
       });
 
-      test('constructor', () => {
+      await test('constructor', () => {
         const enc2 = new TextEncoder('literally anything can go here');
         const enc3 = new TextEncoder(new Object());
 
@@ -102,11 +126,11 @@ function tests(isNative, TextEncoder, TextDecoder) {
         assert.notEqual(enc, enc3);
       });
 
-      test('ie11 .slice', () => {
+      await test('ie11 .slice', () => {
         const originalSlice = Uint8Array.prototype.slice;
         try {
           Uint8Array.prototype.slice = null;
-          assert.isNull(Uint8Array.prototype.slice);
+          assert.deepEqual(Uint8Array.prototype.slice, null);
 
           // Confirms that the method works even without .slice.
           const buffer = new Uint8Array([194, 161]);
@@ -117,13 +141,13 @@ function tests(isNative, TextEncoder, TextDecoder) {
         }
       });
 
-      test('null in middle', () => {
+      await test('null in middle', () => {
         const s = 'pad\x00pad';
         const buffer = new Uint8Array([112, 97, 100, 0, 112, 97, 100]);
         assert.deepEqual(enc.encode(s), buffer);
       });
 
-      test('null at ends', () => {
+      await test('null at ends', () => {
         const s = '\x00\x00?\x00\x00';
         const buffer = new Uint8Array([0, 0, 63, 0, 0]);
         assert.deepEqual(enc.encode(s), buffer);
@@ -135,7 +159,6 @@ function tests(isNative, TextEncoder, TextDecoder) {
 
 }
 
-if (typeof NativeTextEncoder !== 'undefined' && typeof NativeTextDecoder !== 'undefined') {
-  tests(true, NativeTextEncoder, NativeTextDecoder);
-}
+
+tests(true, NativeTextEncoder, NativeTextDecoder);
 tests(false, TextEncoder, TextDecoder);
diff --git a/yarn.lock b/yarn.lock
deleted file mode 100644
index 752fc42..0000000
--- a/yarn.lock
+++ /dev/null
@@ -1,891 +0,0 @@
-# THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY.
-# yarn lockfile v1
-
-
-ansi-colors@3.2.3:
-  version "3.2.3"
-  resolved "https://registry.yarnpkg.com/ansi-colors/-/ansi-colors-3.2.3.tgz#57d35b8686e851e2cc04c403f1c00203976a1813"
-  integrity sha512-LEHHyuhlPY3TmuUYMh2oz89lTShfvgbmzaBcxve9t/9Wuy7Dwf4yoAKcND7KFT1HAQfqZ12qtc+DUrBMeKF9nw==
-
-ansi-regex@^3.0.0:
-  version "3.0.0"
-  resolved "https://registry.yarnpkg.com/ansi-regex/-/ansi-regex-3.0.0.tgz#ed0317c322064f79466c02966bddb605ab37d998"
-  integrity sha1-7QMXwyIGT3lGbAKWa922Bas32Zg=
-
-ansi-regex@^4.1.0:
-  version "4.1.0"
-  resolved "https://registry.yarnpkg.com/ansi-regex/-/ansi-regex-4.1.0.tgz#8b9f8f08cf1acb843756a839ca8c7e3168c51997"
-  integrity sha512-1apePfXM1UOSqw0o9IiFAovVz9M5S1Dg+4TrDwfMewQ6p/rmMueb7tWZjQ1rx4Loy1ArBggoqGpfqqdI4rondg==
-
-ansi-styles@^3.2.0, ansi-styles@^3.2.1:
-  version "3.2.1"
-  resolved "https://registry.yarnpkg.com/ansi-styles/-/ansi-styles-3.2.1.tgz#41fbb20243e50b12be0f04b8dedbf07520ce841d"
-  integrity sha512-VT0ZI6kZRdTh8YyJw3SMbYm/u+NqfsAxEpWO0Pf9sq8/e94WxxOpPKx9FR1FlyCtOVDNOQ+8ntlqFxiRc+r5qA==
-  dependencies:
-    color-convert "^1.9.0"
-
-anymatch@~3.1.1:
-  version "3.1.1"
-  resolved "https://registry.yarnpkg.com/anymatch/-/anymatch-3.1.1.tgz#c55ecf02185e2469259399310c173ce31233b142"
-  integrity sha512-mM8522psRCqzV+6LhomX5wgp25YVibjh8Wj23I5RPkPppSVSjyKD2A2mBJmWGa+KN7f2D6LNh9jkBCeyLktzjg==
-  dependencies:
-    normalize-path "^3.0.0"
-    picomatch "^2.0.4"
-
-argparse@^1.0.7:
-  version "1.0.10"
-  resolved "https://registry.yarnpkg.com/argparse/-/argparse-1.0.10.tgz#bcd6791ea5ae09725e17e5ad988134cd40b3d911"
-  integrity sha512-o5Roy6tNG4SL/FOkCAN6RzjiakZS25RLYFrcMttJqbdd8BWrnA+fGz57iN5Pb06pvBGvl5gQ0B48dJlslXvoTg==
-  dependencies:
-    sprintf-js "~1.0.2"
-
-assertion-error@^1.1.0:
-  version "1.1.0"
-  resolved "https://registry.yarnpkg.com/assertion-error/-/assertion-error-1.1.0.tgz#e60b6b0e8f301bd97e5375215bda406c85118c0b"
-  integrity sha512-jgsaNduz+ndvGyFt3uSuWqvy4lCnIJiovtouQN5JZHOKCS2QuhEdbcQHFhVksz2N2U9hXJo8odG7ETyWlEeuDw==
-
-balanced-match@^1.0.0:
-  version "1.0.0"
-  resolved "https://registry.yarnpkg.com/balanced-match/-/balanced-match-1.0.0.tgz#89b4d199ab2bee49de164ea02b89ce462d71b767"
-  integrity sha1-ibTRmasr7kneFk6gK4nORi1xt2c=
-
-binary-extensions@^2.0.0:
-  version "2.0.0"
-  resolved "https://registry.yarnpkg.com/binary-extensions/-/binary-extensions-2.0.0.tgz#23c0df14f6a88077f5f986c0d167ec03c3d5537c"
-  integrity sha512-Phlt0plgpIIBOGTT/ehfFnbNlfsDEiqmzE2KRXoX1bLIlir4X/MR+zSyBEkL05ffWgnRSf/DXv+WrUAVr93/ow==
-
-brace-expansion@^1.1.7:
-  version "1.1.11"
-  resolved "https://registry.yarnpkg.com/brace-expansion/-/brace-expansion-1.1.11.tgz#3c7fcbf529d87226f3d2f52b966ff5271eb441dd"
-  integrity sha512-iCuPHDFgrHX7H2vEI/5xpz07zSHB00TpugqhmYtVmMO6518mCuRMoOYFldEBl0g187ufozdaHgWKcYFb61qGiA==
-  dependencies:
-    balanced-match "^1.0.0"
-    concat-map "0.0.1"
-
-braces@~3.0.2:
-  version "3.0.2"
-  resolved "https://registry.yarnpkg.com/braces/-/braces-3.0.2.tgz#3454e1a462ee8d599e236df336cd9ea4f8afe107"
-  integrity sha512-b8um+L1RzM3WDSzvhm6gIz1yfTbBt6YTlcEKAvsmqCZZFw46z626lVj9j1yEPW33H5H+lBQpZMP1k8l+78Ha0A==
-  dependencies:
-    fill-range "^7.0.1"
-
-browser-stdout@1.3.1:
-  version "1.3.1"
-  resolved "https://registry.yarnpkg.com/browser-stdout/-/browser-stdout-1.3.1.tgz#baa559ee14ced73452229bad7326467c61fabd60"
-  integrity sha512-qhAVI1+Av2X7qelOfAIYwXONood6XlZE/fXaBSmW/T5SzLAmCgzi+eiWE7fUvbHaeNBQH13UftjpXxsfLkMpgw==
-
-camelcase@^5.0.0:
-  version "5.3.1"
-  resolved "https://registry.yarnpkg.com/camelcase/-/camelcase-5.3.1.tgz#e3c9b31569e106811df242f715725a1f4c494320"
-  integrity sha512-L28STB170nwWS63UjtlEOE3dldQApaJXZkOI1uMFfzf3rRuPegHaHesyee+YxQ+W6SvRDQV6UrdOdRiR153wJg==
-
-chai@^4.2.0:
-  version "4.2.0"
-  resolved "https://registry.yarnpkg.com/chai/-/chai-4.2.0.tgz#760aa72cf20e3795e84b12877ce0e83737aa29e5"
-  integrity sha512-XQU3bhBukrOsQCuwZndwGcCVQHyZi53fQ6Ys1Fym7E4olpIqqZZhhoFJoaKVvV17lWQoXYwgWN2nF5crA8J2jw==
-  dependencies:
-    assertion-error "^1.1.0"
-    check-error "^1.0.2"
-    deep-eql "^3.0.1"
-    get-func-name "^2.0.0"
-    pathval "^1.1.0"
-    type-detect "^4.0.5"
-
-chalk@2.x, chalk@^2.4.2:
-  version "2.4.2"
-  resolved "https://registry.yarnpkg.com/chalk/-/chalk-2.4.2.tgz#cd42541677a54333cf541a49108c1432b44c9424"
-  integrity sha512-Mti+f9lpJNcwF4tWV8/OrTTtF1gZi+f8FqlyAdouralcFWFQWF2+NgCHShjkCb+IFBLq9buZwE1xckQU4peSuQ==
-  dependencies:
-    ansi-styles "^3.2.1"
-    escape-string-regexp "^1.0.5"
-    supports-color "^5.3.0"
-
-check-error@^1.0.2:
-  version "1.0.2"
-  resolved "https://registry.yarnpkg.com/check-error/-/check-error-1.0.2.tgz#574d312edd88bb5dd8912e9286dd6c0aed4aac82"
-  integrity sha1-V00xLt2Iu13YkS6Sht1sCu1KrII=
-
-chokidar@3.3.0:
-  version "3.3.0"
-  resolved "https://registry.yarnpkg.com/chokidar/-/chokidar-3.3.0.tgz#12c0714668c55800f659e262d4962a97faf554a6"
-  integrity sha512-dGmKLDdT3Gdl7fBUe8XK+gAtGmzy5Fn0XkkWQuYxGIgWVPPse2CxFA5mtrlD0TOHaHjEUqkWNyP1XdHoJES/4A==
-  dependencies:
-    anymatch "~3.1.1"
-    braces "~3.0.2"
-    glob-parent "~5.1.0"
-    is-binary-path "~2.1.0"
-    is-glob "~4.0.1"
-    normalize-path "~3.0.0"
-    readdirp "~3.2.0"
-  optionalDependencies:
-    fsevents "~2.1.1"
-
-cliui@^5.0.0:
-  version "5.0.0"
-  resolved "https://registry.yarnpkg.com/cliui/-/cliui-5.0.0.tgz#deefcfdb2e800784aa34f46fa08e06851c7bbbc5"
-  integrity sha512-PYeGSEmmHM6zvoef2w8TPzlrnNpXIjTipYK780YswmIP9vjxmd6Y2a3CB2Ks6/AU8NHjZugXvo8w3oWM2qnwXA==
-  dependencies:
-    string-width "^3.1.0"
-    strip-ansi "^5.2.0"
-    wrap-ansi "^5.1.0"
-
-clone-buffer@^1.0.0:
-  version "1.0.0"
-  resolved "https://registry.yarnpkg.com/clone-buffer/-/clone-buffer-1.0.0.tgz#e3e25b207ac4e701af721e2cb5a16792cac3dc58"
-  integrity sha1-4+JbIHrE5wGvch4staFnksrD3Fg=
-
-clone-stats@^1.0.0:
-  version "1.0.0"
-  resolved "https://registry.yarnpkg.com/clone-stats/-/clone-stats-1.0.0.tgz#b3782dff8bb5474e18b9b6bf0fdfe782f8777680"
-  integrity sha1-s3gt/4u1R04Yuba/D9/ngvh3doA=
-
-clone@^2.1.1:
-  version "2.1.2"
-  resolved "https://registry.yarnpkg.com/clone/-/clone-2.1.2.tgz#1b7f4b9f591f1e8f83670401600345a02887435f"
-  integrity sha1-G39Ln1kfHo+DZwQBYANFoCiHQ18=
-
-cloneable-readable@^1.0.0:
-  version "1.1.3"
-  resolved "https://registry.yarnpkg.com/cloneable-readable/-/cloneable-readable-1.1.3.tgz#120a00cb053bfb63a222e709f9683ea2e11d8cec"
-  integrity sha512-2EF8zTQOxYq70Y4XKtorQupqF0m49MBz2/yf5Bj+MHjvpG3Hy7sImifnqD6UA+TKYxeSV+u6qqQPawN5UvnpKQ==
-  dependencies:
-    inherits "^2.0.1"
-    process-nextick-args "^2.0.0"
-    readable-stream "^2.3.5"
-
-color-convert@^1.9.0:
-  version "1.9.3"
-  resolved "https://registry.yarnpkg.com/color-convert/-/color-convert-1.9.3.tgz#bb71850690e1f136567de629d2d5471deda4c1e8"
-  integrity sha512-QfAUtd+vFdAtFQcC8CCyYt1fYWxSqAiK2cSD6zDB8N3cpsEBAvRxp9zOGg6G/SHHJYAT88/az/IuDGALsNVbGg==
-  dependencies:
-    color-name "1.1.3"
-
-color-name@1.1.3:
-  version "1.1.3"
-  resolved "https://registry.yarnpkg.com/color-name/-/color-name-1.1.3.tgz#a7d0558bd89c42f795dd42328f740831ca53bc25"
-  integrity sha1-p9BVi9icQveV3UIyj3QIMcpTvCU=
-
-concat-map@0.0.1:
-  version "0.0.1"
-  resolved "https://registry.yarnpkg.com/concat-map/-/concat-map-0.0.1.tgz#d8a96bd77fd68df7793a73036a3ba0d5405d477b"
-  integrity sha1-2Klr13/Wjfd5OnMDajug1UBdR3s=
-
-core-util-is@~1.0.0:
-  version "1.0.2"
-  resolved "https://registry.yarnpkg.com/core-util-is/-/core-util-is-1.0.2.tgz#b5fd54220aa2bc5ab57aab7140c940754503c1a7"
-  integrity sha1-tf1UIgqivFq1eqtxQMlAdUUDwac=
-
-debug@3.2.6:
-  version "3.2.6"
-  resolved "https://registry.yarnpkg.com/debug/-/debug-3.2.6.tgz#e83d17de16d8a7efb7717edbe5fb10135eee629b"
-  integrity sha512-mel+jf7nrtEl5Pn1Qx46zARXKDpBbvzezse7p7LqINmdoIk8PYP5SySaxEmYv6TZ0JyEKA1hsCId6DIhgITtWQ==
-  dependencies:
-    ms "^2.1.1"
-
-decamelize@^1.2.0:
-  version "1.2.0"
-  resolved "https://registry.yarnpkg.com/decamelize/-/decamelize-1.2.0.tgz#f6534d15148269b20352e7bee26f501f9a191290"
-  integrity sha1-9lNNFRSCabIDUue+4m9QH5oZEpA=
-
-deep-eql@^3.0.1:
-  version "3.0.1"
-  resolved "https://registry.yarnpkg.com/deep-eql/-/deep-eql-3.0.1.tgz#dfc9404400ad1c8fe023e7da1df1c147c4b444df"
-  integrity sha512-+QeIQyN5ZuO+3Uk5DYh6/1eKO0m0YmJFGNmFHGACpf1ClL1nmlV/p4gNgbl2pJGxgXb4faqo6UE+M5ACEMyVcw==
-  dependencies:
-    type-detect "^4.0.0"
-
-define-properties@^1.1.2, define-properties@^1.1.3:
-  version "1.1.3"
-  resolved "https://registry.yarnpkg.com/define-properties/-/define-properties-1.1.3.tgz#cf88da6cbee26fe6db7094f61d870cbd84cee9f1"
-  integrity sha512-3MqfYKj2lLzdMSf8ZIZE/V+Zuy+BgD6f164e8K2w7dgnpKArBDerGYpM46IYYcjnkdPNMjPk9A6VFB8+3SKlXQ==
-  dependencies:
-    object-keys "^1.0.12"
-
-diff@3.5.0:
-  version "3.5.0"
-  resolved "https://registry.yarnpkg.com/diff/-/diff-3.5.0.tgz#800c0dd1e0a8bfbc95835c202ad220fe317e5a12"
-  integrity sha512-A46qtFgd+g7pDZinpnwiRJtxbC1hpgf0uzP3iG89scHk0AUC7A1TGxf5OiiOUv/JMZR8GOt8hL900hV0bOy5xA==
-
-emoji-regex@^7.0.1:
-  version "7.0.3"
-  resolved "https://registry.yarnpkg.com/emoji-regex/-/emoji-regex-7.0.3.tgz#933a04052860c85e83c122479c4748a8e4c72156"
-  integrity sha512-CwBLREIQ7LvYFB0WyRvwhq5N5qPhc6PMjD6bYggFlI5YyDgl+0vxq5VHbMOFqLg7hfWzmu8T5Z1QofhmTIhItA==
-
-es-abstract@^1.17.0-next.1:
-  version "1.17.4"
-  resolved "https://registry.yarnpkg.com/es-abstract/-/es-abstract-1.17.4.tgz#e3aedf19706b20e7c2594c35fc0d57605a79e184"
-  integrity sha512-Ae3um/gb8F0mui/jPL+QiqmglkUsaQf7FwBEHYIFkztkneosu9imhqHpBzQ3h1vit8t5iQ74t6PEVvphBZiuiQ==
-  dependencies:
-    es-to-primitive "^1.2.1"
-    function-bind "^1.1.1"
-    has "^1.0.3"
-    has-symbols "^1.0.1"
-    is-callable "^1.1.5"
-    is-regex "^1.0.5"
-    object-inspect "^1.7.0"
-    object-keys "^1.1.1"
-    object.assign "^4.1.0"
-    string.prototype.trimleft "^2.1.1"
-    string.prototype.trimright "^2.1.1"
-
-es-to-primitive@^1.2.1:
-  version "1.2.1"
-  resolved "https://registry.yarnpkg.com/es-to-primitive/-/es-to-primitive-1.2.1.tgz#e55cd4c9cdc188bcefb03b366c736323fc5c898a"
-  integrity sha512-QCOllgZJtaUo9miYBcLChTUaHNjJF3PYs1VidD7AwiEj1kYxKeQTctLAezAOH5ZKRH0g2IgPn6KwB4IT8iRpvA==
-  dependencies:
-    is-callable "^1.1.4"
-    is-date-object "^1.0.1"
-    is-symbol "^1.0.2"
-
-escape-string-regexp@1.0.5, escape-string-regexp@^1.0.5:
-  version "1.0.5"
-  resolved "https://registry.yarnpkg.com/escape-string-regexp/-/escape-string-regexp-1.0.5.tgz#1b61c0562190a8dff6ae3bb2cf0200ca130b86d4"
-  integrity sha1-G2HAViGQqN/2rjuyzwIAyhMLhtQ=
-
-esprima@^4.0.0:
-  version "4.0.1"
-  resolved "https://registry.yarnpkg.com/esprima/-/esprima-4.0.1.tgz#13b04cdb3e6c5d19df91ab6987a8695619b0aa71"
-  integrity sha512-eGuFFw7Upda+g4p+QHvnW0RyTX/SVeJBDM/gCtMARO0cLuT2HcEKnTPvhjV6aGeqrCB/sbNop0Kszm0jsaWU4A==
-
-fill-range@^7.0.1:
-  version "7.0.1"
-  resolved "https://registry.yarnpkg.com/fill-range/-/fill-range-7.0.1.tgz#1919a6a7c75fe38b2c7c77e5198535da9acdda40"
-  integrity sha512-qOo9F+dMUmC2Lcb4BbVvnKJxTPjCm+RRpe4gDuGrzkL7mEVl/djYSu2OdQ2Pa302N4oqkSg9ir6jaLWJ2USVpQ==
-  dependencies:
-    to-regex-range "^5.0.1"
-
-find-up@3.0.0, find-up@^3.0.0:
-  version "3.0.0"
-  resolved "https://registry.yarnpkg.com/find-up/-/find-up-3.0.0.tgz#49169f1d7993430646da61ecc5ae355c21c97b73"
-  integrity sha512-1yD6RmLI1XBfxugvORwlck6f75tYL+iR0jqwsOrOxMZyGYqUuDhJ0l4AXdO1iX/FTs9cBAMEk1gWSEx1kSbylg==
-  dependencies:
-    locate-path "^3.0.0"
-
-flat@^4.1.0:
-  version "4.1.0"
-  resolved "https://registry.yarnpkg.com/flat/-/flat-4.1.0.tgz#090bec8b05e39cba309747f1d588f04dbaf98db2"
-  integrity sha512-Px/TiLIznH7gEDlPXcUD4KnBusa6kR6ayRUVcnEAbreRIuhkqow/mun59BuRXwoYk7ZQOLW1ZM05ilIvK38hFw==
-  dependencies:
-    is-buffer "~2.0.3"
-
-fs.realpath@^1.0.0:
-  version "1.0.0"
-  resolved "https://registry.yarnpkg.com/fs.realpath/-/fs.realpath-1.0.0.tgz#1504ad2523158caa40db4a2787cb01411994ea4f"
-  integrity sha1-FQStJSMVjKpA20onh8sBQRmU6k8=
-
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-  version "2.1.2"
-  resolved "https://registry.yarnpkg.com/fsevents/-/fsevents-2.1.2.tgz#4c0a1fb34bc68e543b4b82a9ec392bfbda840805"
-  integrity sha512-R4wDiBwZ0KzpgOWetKDug1FZcYhqYnUYKtfZYt4mD5SBz76q0KR4Q9o7GIPamsVPGmW3EYPPJ0dOOjvx32ldZA==
-
-function-bind@^1.1.1:
-  version "1.1.1"
-  resolved "https://registry.yarnpkg.com/function-bind/-/function-bind-1.1.1.tgz#a56899d3ea3c9bab874bb9773b7c5ede92f4895d"
-  integrity sha512-yIovAzMX49sF8Yl58fSCWJ5svSLuaibPxXQJFLmBObTuCr0Mf1KiPopGM9NiFjiYBCbfaa2Fh6breQ6ANVTI0A==
-
-get-caller-file@^2.0.1:
-  version "2.0.5"
-  resolved "https://registry.yarnpkg.com/get-caller-file/-/get-caller-file-2.0.5.tgz#4f94412a82db32f36e3b0b9741f8a97feb031f7e"
-  integrity sha512-DyFP3BM/3YHTQOCUL/w0OZHR0lpKeGrxotcHWcqNEdnltqFwXVfhEBQ94eIo34AfQpo0rGki4cyIiftY06h2Fg==
-
-get-func-name@^2.0.0:
-  version "2.0.0"
-  resolved "https://registry.yarnpkg.com/get-func-name/-/get-func-name-2.0.0.tgz#ead774abee72e20409433a066366023dd6887a41"
-  integrity sha1-6td0q+5y4gQJQzoGY2YCPdaIekE=
-
-glob-parent@~5.1.0:
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