move @@toStringTag to a separate module, improve compat tests, fix …

…entries

packages/core-js-compat/src/data.mjs

@@ -1777,6 +1777,12 @@ export const data = {
     deno: '1.7',
     firefox: '37',
   },
+  'web.dom-exception.to-string-tag': {
+    chrome: '49',
+    deno: '1.7',
+    firefox: '51',
+    safari: '11.1',
+  },
   'web.immediate': {
     ie: '10',
     node: '0.9.1',

packages/core-js-compat/src/modules-by-versions.mjs

@@ -115,5 +115,6 @@ export default {
     'es.error.to-string',
     'web.dom-exception.constructor',
     'web.dom-exception.stack',
+    'web.dom-exception.to-string-tag',
   ],
 };

packages/core-js/features/dom-exception/constructor.js

@@ -0,0 +1,3 @@
+var parent = require('../../stable/dom-exception/constructor');
+
+module.exports = parent;

packages/core-js/features/dom-exception/index.js

@@ -0,0 +1,3 @@
+var parent = require('../../stable/dom-exception');
+
+module.exports = parent;

packages/core-js/features/dom-exception/to-string-tag.js

@@ -0,0 +1,3 @@
+var parent = require('../../stable/dom-exception/to-string-tag');
+
+module.exports = parent;

packages/core-js/internals/set-to-string-tag.js

@@ -4,8 +4,9 @@ var wellKnownSymbol = require('../internals/well-known-symbol');
 
 var TO_STRING_TAG = wellKnownSymbol('toStringTag');
 
-module.exports = function (it, TAG, STATIC) {
-  if (it && !hasOwn(it = STATIC ? it : it.prototype, TO_STRING_TAG)) {
-    defineProperty(it, TO_STRING_TAG, { configurable: true, value: TAG });
+module.exports = function (target, TAG, STATIC) {
+  if (target && !STATIC) target = target.prototype;
+  if (target && !hasOwn(target, TO_STRING_TAG)) {
+    defineProperty(target, TO_STRING_TAG, { configurable: true, value: TAG });
   }
 };

packages/core-js/modules/web.dom-exception.constructor.js

@@ -12,7 +12,6 @@ var anInstance = require('../internals/an-instance');
 var anObject = require('../internals/an-object');
 var errorToString = require('../internals/error-to-string');
 var normalizeStringArgument = require('../internals/normalize-string-argument');
-var setToStringTag = require('../internals/set-to-string-tag');
 var DOMExceptionConstants = require('../internals/dom-exception-constants');
 var InternalStateModule = require('../internals/internal-state');
 var DESCRIPTORS = require('../internals/descriptors');
@@ -92,8 +91,8 @@ var INCORRECT_CODE = INCORRECT_CONSTRUCTOR || fails(function () {
 
 // Deno 1.6.3- DOMException constants just missed
 var MISSED_CONSTANTS = INCORRECT_CONSTRUCTOR
-  || !NativeDOMException[DATA_CLONE_ERR]
-  || !NativeDOMExceptionPrototype[DATA_CLONE_ERR];
+  || NativeDOMException[DATA_CLONE_ERR] !== 25
+  || NativeDOMExceptionPrototype[DATA_CLONE_ERR] !== 25;
 
 var FORCED_CONSTRUCTOR = IS_PURE ? INCORRECT_TO_STRING || INCORRECT_CODE || MISSED_CONSTANTS : INCORRECT_CONSTRUCTOR;
 
@@ -129,5 +128,3 @@ for (var key in DOMExceptionConstants) if (hasOwn(DOMExceptionConstants, key)) {
     defineProperty(PolyfilledDOMExceptionPrototype, constantName, descriptor);
   }
 }
-
-setToStringTag(PolyfilledDOMException, DOM_EXCEPTION);

packages/core-js/modules/web.dom-exception.to-string-tag.js

@@ -0,0 +1,6 @@
+var getBuiltIn = require('../internals/get-built-in');
+var setToStringTag = require('../internals/set-to-string-tag');
+
+var DOM_EXCEPTION = 'DOMException';
+
+setToStringTag(getBuiltIn(DOM_EXCEPTION), DOM_EXCEPTION);

packages/core-js/stable/dom-exception/constructor.js

@@ -0,0 +1,6 @@
+require('../../modules/es.error.to-string');
+require('../../modules/web.dom-exception.constructor');
+require('../../modules/web.dom-exception.stack');
+var path = require('../../internals/path');
+
+module.exports = path.DOMException;

packages/core-js/stable/dom-exception/index.js

@@ -0,0 +1,7 @@
+require('../../modules/es.error.to-string');
+require('../../modules/web.dom-exception.constructor');
+require('../../modules/web.dom-exception.stack');
+require('../../modules/web.dom-exception.to-string-tag');
+var path = require('../../internals/path');
+
+module.exports = path.DOMException;

packages/core-js/stable/dom-exception/to-string-tag.js

@@ -0,0 +1,3 @@
+require('../../modules/web.dom-exception.to-string-tag');
+
+module.exports = 'DOMException';

packages/core-js/web/dom-exception.js

@@ -1,6 +1,7 @@
 require('../modules/es.error.to-string');
 require('../modules/web.dom-exception.constructor');
 require('../modules/web.dom-exception.stack');
+require('../modules/web.dom-exception.to-string-tag');
 var path = require('../internals/path');
 
 module.exports = path.DOMException;

packages/core-js/web/index.js

@@ -2,6 +2,7 @@ require('../modules/web.dom-collections.for-each');
 require('../modules/web.dom-collections.iterator');
 require('../modules/web.dom-exception.constructor');
 require('../modules/web.dom-exception.stack');
+require('../modules/web.dom-exception.to-string-tag');
 require('../modules/web.immediate');
 require('../modules/web.queue-microtask');
 require('../modules/web.timers');

tests/commonjs.mjs

@@ -542,6 +542,8 @@ for (PATH of ['core-js-pure', 'core-js']) {
   }
 
   for (const NS of ['stable', 'features']) {
+    ok(typeof load(NS, 'dom-exception/constructor') === 'function');
+    ok(load(NS, 'dom-exception/to-string-tag') === 'DOMException');
     ok(typeof load(NS, 'dom-exception') === 'function');
     ok(typeof load(NS, 'dom-collections').iterator === 'function');
     ok(typeof load(NS, 'dom-collections/for-each') === 'function');

tests/compat/tests.js

@@ -1585,11 +1585,19 @@ GLOBAL.tests = {
     return true;
   },
   'web.dom-exception.constructor': function () {
-    return typeof DOMException === 'function';
+    return new DOMException() instanceof Error
+      && new DOMException(1, 'DataCloneError').code === 25
+      && String(new DOMException(1, 2)) === '2: 1'
+      && DOMException.DATA_CLONE_ERR === 25
+      && DOMException.prototype.DATA_CLONE_ERR === 25;
   },
   'web.dom-exception.stack': function () {
     return !('stack' in Error('1')) || 'stack' in new DOMException();
   },
+  'web.dom-exception.to-string-tag': function () {
+    return typeof DOMException === 'function'
+      && DOMException.prototype[Symbol.toStringTag] === 'DOMException';
+  },
   'web.immediate': function () {
     return setImmediate && clearImmediate;
   },